Just finished watching your "what is a VFD?" video and, once again, the explanation was excellent, especially useful was the analogy of the water control pipeline. I started to read up about VFDs on a well-known online encyclopedia and was blinded with science. Your explanation was pitched perfectly and just what I needed as I'm working on updating our PLC to control an inverter for a water pump. Perfect, keep up the good work. Cheers!
Awesome, thanks a lot for your kind compliment! We are always extremely happy to hear such positive feedback! If you ever have any questions, feel free to reach out to us. Happy learning!
The quality and presenataion of these videos is simply amazing, Easy to follow and understand, Thank you so much! I recommend this channel to every engineer/ technician i know :)
Hey! Thanks a lot for your kind compliment! We are always extremely happy to hear such positive feedback! If you ever have any questions, feel free to reach out to us. Happy learning!
Appreciate this simplified easily accessible explanation. I’m a civil engineer so I need to be familiar with the basic operation of a vfd, despite my lack of education in mechanical and electrical engineering. This video made great sense and has clarified the subject for me significantly. Thank you!!
They do lay down the fundamentals quite well in explaining things in every video fundamentally. I really appreciate that about them as well as the fundamentals help immensely in understanding and they do it in very simple explanation and animation. It’s just awesome.
Dear, please share your knowledge on points 1) How to do wiring , i mean power wiring + control wiring of a VFD and its hook up with PLC 2) What are the configuration settings to be done inside the VFD for Siemens and Allenbradley ones 3) how to build a control logic for the same by using PLC programming. Kindly do the needful. You people are awesome, love u all
Thanks for the insightful comparison of electronic components to hydrologic systems . This opened a couple of doors quickly for me. To get an understanding of how a PLC interacts with a VFD has given me some confidence in my new job as a Flexographic printing Mechanic. It is my hope to not only comprehend but to be able to program fully automated six color presses to accommodate changes in production requirements across a wide variety of material and ink types. This work is gratifying and worthwhile for me and your program is now on my radar. Keep up the good work many thanks.
vfd controls the speed of the motor by converting AC to DC then back to AC with different frequency and it can be wired to plc to make the task automatic and get rid of a stupid operator! can't find any easier and straightforward explanation... GREAT JOB
Exceptional video lesson with an impeccable subject of a state-of-the-art equipment which is becoming indispensable in the most varied processes. It is fascinating to understand the conversion of AC input energy into DC energy and going out simulating an AC senoid through the width of pulses having the ability to control the speed of electric motors by frequency. Thank you very much and congratulations on the excellent work. I'm from the city of Manaus, in the State of Amazonas, Brazil, country, located right in the middle of the Amazon rainforest, where incredibly there are several of these equipment, and I accompany you.
Super awesome explanation! Thank you Sir! What a smooth instructor 💯🙌 I treasure this channel now...I rarely come across lucid and well articulated information like this. Thank you!!!💯👍🙌🙌🙌🙌
Thanks a lot for your kind compliment! We are always extremely happy to hear such positive feedback! If you ever have any questions, feel free to reach out to us. Happy learning!
Sir, in this video you cover most of the part related to the application, please make one video which will give details about the VFD internal functions, which is actually important. Thanks
Thank you for your question! You’ve raised a good point. In a VFD, we work with a feeder power source, utilizing its voltage, current, and frequency to control the motor's actions. By adjusting these parameters, we can achieve the desired torque during slow startups for heavy loads, preventing motor damage. To get the results we want, we need to program the frequency, voltage, and current parameters accordingly. If you’re a member of our platform, you can learn more about these drives and their general applications. You can check those out over here: www.realpars.com/courses Happy learning!
Thanks for the video this just made my idea of a off grid induction motor and centrifugal pump to pressurize the water to drive pelton turbines for my hydro electric system a reality for my bitcoin mining operation, simply put much like the video i was wondering how i could control the pump speed for pressure to drive the pelton turbines to have more control on the overal out put of the generators also the electric motor is also powered by the same generators currently figuring out how to switch power sources for shutdowns for maintenance purposes where i would have to hydro systems to switch between to service but maintain electricity.
thank you for very good and useful information. can we use the VFD drive in sewage pumping station? how we calculate the power needs when we use VFD drive?
Hi Nuri, Thanks for your comment and for your feedback! I will happily go ahead and pass your questions on to our course developers as a topic suggestion. Thanks again and happy learning!
VFD is a motor drive that controls AC motors, it converts AC into DC using a diode then it filters the current by a capacitor then converts DC into AC using a transistor. What a solid state motor drive
Thank you for your question! It sounds like you’re asking about the difference between a Variable Frequency Drive (VFD) and a solid-state drive. Here’s a quick explanation: VFDs: Primarily used to control the speed and torque of AC motors by adjusting the frequency and voltage of the power supplied. Solid-State Motor Drives: A broader category that includes VFDs but also covers drives for various motor types (AC, DC, and stepper motors). These drives use semiconductor technology to control motor functions. We hope this clarifies things. Happy learning from RealPars!
So far, so good. These days, 3 phase VFD is used for most modern electric trains, and hybrid or full-on electric road vehicles, after the advent of integrated gate bipolar transistors (IGBT). Typically done with triple inverters (one for each phase), capable of working in both directions, for regenerative braking when required, using the 3 phase motor as an alternator.
Great to hear that! Welcome to the RealPars family! If you have any questions, feel free to leave them in the comment section. Just to let you know, that we also have a free course on PLC Hardware bit.ly/2XnnUrF Happy learning!
Got a question! I'm a bit confused. If you start out with AC, why convert it to DC just to convert it again back to AC? What is the difference between the initial AC and the final output AC? What is the reason you can't just use the transistors to control the frequency from the original AC source?
Hi Dave, thank you for your question! In order to change the frequency of the AC sine wave, the incoming supply must be transformed. The most effective way to do this is to convert the current to DC and then reform the AC signal at a different frequency. This process also allows the VFD to maintain a constant Volts/Hz ratio, which is important for maintaining the integrity of the motor windings over a long period of time. Inductive reactance acts as a resistor and can cause excess heat dissipation if the V/Hz ratio is not maintained. Therefore, there are multiple benefits to converting from AC to DC and back to AC, including being able to provide a cleaner (filtered) AC feed to the motor. Hope this helps, and happy learning!
Your graphic of flow thru the water pump into the holding tank is reversed. On skid-mounted pumps the suction is on the the end of the volute & discharge pumps out the top of the pump housing.
There are two reasons. The first is to provide a "clean" AC output to the motor. The rectification from AC to DC allows the IGBT's or SCR's to "reassemble" the AC sine wave as free of electrical noise as possible, even if there is some noise on the input circuit. Secondly, rectification and inversion is the easy and cost effective way to change frequencies on the AC circuit. In a VFD, the voltage is also adjusted as to keep a fairly constant Volts/Hz ratio. For very large motors, there are devices being developed for industry called Direct Matrix Converters which will be able to perform voltage and current conversion in one single stage without converting to DC.
VFD's do place a strain on a standard motor, due to the magnetic fluctuations and heat dissipation when using a VFD. That is why it is important to use an inverter-rated motor and to use a quality VFD that can hold the Volts/Hertz ratio as constant as possible to limit heat dissipation at lower speeds.
sir, why we are converting ac to dc and dc to ac?.is it for changing the frequency of supply? is t possible to change ac frequency without changing to dc?
Sir your videos are very informative but sorry to say in this video you did not explain deeply about vfd. How we can control frequency how much minimise and maximise the frequency. What is the function of PWM how it works and which components use in PWM card for controlling the frequency
Thank you for your feedback @greenpakistan3184. Yes, you are correct. Our video is meant to be a short version of the real technical version. There is only so much we can say in 8 minutes or so. If you have not signed up for our free trial, I would recommend that you take advantage of it and learn more from us on this topic. To add more to this, VFD engineering varies between drive manufacturers, with some similarities. Here is a link to a book company where you can purchase hard copies or eBooks to learn with our lessons: www.atplearning.com/
Technically, if the VFD has the option for auto-tuning, you can configure auto-tuning for whatever KW rating the VFD is rated for. Practically speaking, since auto-tuning is performed to improve the efficiency of the motor performance, tangible (measurable) benefits will not likely be seen for motors less than 5Hp (3.275kW).
Informative video! Suppose we have a traditional inductive motor with maximum 1400 RPM, then we connect that motor to a VFD, here is the question: Does it possible to increase the RPM of the same motor more than 1400 RPM by increasing the frequency? And does the power consumption will increase?
It is possible to overspeed a motor by setting the frequency above the nameplate frequency. However, motor torque will start to decrease above 100% speed. This occurs because the faster speed leads to increased slip, which robs the motor of torque and converts the excess energy into heat and efficiency loss. Overspeeding a motor is sometimes done with fans, but there can be adverse effects of doing so. Power consumption depends on the loads that are connected to the motor.
@@realpars In my case it's a water pump one horse power 746 watts, my plan to make a basic inverter or a soft starter circuit in order to run that motor on UPS 12/220v--1200 watts,but I face problem that my UPS circuit breaker cutting off due to rough start
Hii this is Swathi from India Did u heard about SFC and FCMA starters If you did please make a video on them..and i must tell you your channel content is so helpful to my work.. thank you ☺️
You could try, but it is best to use a reciprocating or positive displacement type pump to induce pulsating flow. These types of pumps are usually not controlled by a VFD.
usually to protect the gate from exceeding 15 volts above the emitter. IGBTs have a maximum emitter-gate voltage of about 20 volts max. Anything between 10 and 15 volts is high enough to ensure full ON status. Anything over 20 volts can punch through the gate insulation barrier, and destroy the transistor.
Thanks for the video I thought VFD would give more torque at the initial start up to reduce mechanical load than it can regulate it either manually or automatically by using PLC.
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Just finished watching your "what is a VFD?" video and, once again, the explanation was excellent, especially useful was the analogy of the water control pipeline. I started to read up about VFDs on a well-known online encyclopedia and was blinded with science. Your explanation was pitched perfectly and just what I needed as I'm working on updating our PLC to control an inverter for a water pump. Perfect, keep up the good work. Cheers!
Awesome, thanks a lot for your kind compliment! We are always extremely happy to hear such positive feedback!
If you ever have any questions, feel free to reach out to us.
Happy learning!
Thankyou gues shering
The quality and presenataion of these videos is simply amazing, Easy to follow and understand, Thank you so much! I recommend this channel to every engineer/ technician i know :)
Hey!
Thanks a lot for your kind compliment! We are always extremely happy to hear such positive feedback! If you ever have any questions, feel free to reach out to us.
Happy learning!
11
I'm an Electrical Engineer, your description is perfect.
Thanks for sharing, Gary!
Appreciate this simplified easily accessible explanation. I’m a civil engineer so I need to be familiar with the basic operation of a vfd, despite my lack of education in mechanical and electrical engineering. This video made great sense and has clarified the subject for me significantly. Thank you!!
Thank you so much, @ScabbyBoi! We're glad you found it helpful!
Always starting with the principles to create a strong foundation. That's what I like about your videos.
Thanks for sharing your positive feedback! Great to hear.
They do lay down the fundamentals quite well in explaining things in every video fundamentally. I really appreciate that about them as well as the fundamentals help immensely in understanding and they do it in very simple explanation and animation. It’s just awesome.
Dear, please share your knowledge on points 1) How to do wiring , i mean power wiring + control wiring of a VFD and its hook up with PLC 2) What are the configuration settings to be done inside the VFD for Siemens and Allenbradley ones 3) how to build a control logic for the same by using PLC programming. Kindly do the needful. You people are awesome, love u all
Hi Hara!
Thanks for your comment and your suggestion. I will pass this on to our course developers!
Thanks for sharing and happy learning!
Thanks for the insightful comparison of electronic components to hydrologic systems . This opened a couple of doors quickly for me. To get an understanding of how a PLC interacts with a VFD has given me some confidence in my new job as a Flexographic printing Mechanic. It is my hope to not only comprehend but to be able to program fully automated six color presses to accommodate changes in production requirements across a wide variety of material and ink types. This work is gratifying and worthwhile for me and your program is now on my radar. Keep up the good work many thanks.
Thanks for your comment, Jeffrey!
The world is quiet here..
Best animation video on youtube.
Thanks a million, great to hear that!
vfd controls the speed of the motor by converting AC to DC then back to AC with different frequency and it can be wired to plc to make the task automatic and get rid of a stupid operator! can't find any easier and straightforward explanation... GREAT JOB
Thanks a million for your kind comment, Yousfi! We appreciate your support.
I am from India. It is easy to understand why used vfd. Thank u so much 😍
Glad to hear that!
Explanation is flawless.
That is amazing to hear, thanks for sharing that with us!
Widely used as well in HVAC, especially in FAHUs, AHUs, and Chilled Water Pumps.
Exceptional video lesson with an impeccable subject of a state-of-the-art equipment which is becoming indispensable in the most varied processes.
It is fascinating to understand the conversion of AC input energy into DC energy and going out simulating an AC senoid through the width of pulses having the ability to control the speed of electric motors by frequency.
Thank you very much and congratulations on the excellent work.
I'm from the city of Manaus, in the State of Amazonas, Brazil, country, located right in the middle of the Amazon rainforest, where incredibly there are several of these equipment, and I accompany you.
Our pleasure! Thank you very much for your kind comment, and for sharing that with us.
Happy learning!
Super awesome explanation! Thank you Sir! What a smooth instructor 💯🙌 I treasure this channel now...I rarely come across lucid and well articulated information like this. Thank you!!!💯👍🙌🙌🙌🙌
Thanks for your support! Happy to hear that.
most important informative channel i've seen in my career proud to be a follower many thanks
Thanks a lot for your kind compliment! We are always extremely happy to hear such positive feedback!
If you ever have any questions, feel free to reach out to us. Happy learning!
Easy to get information and difficult to forget it
Thanks a lot
That's great to hear! You are very welcome.
Sir, in this video you cover most of the part related to the application, please make one video which will give details about the VFD internal functions, which is actually important.
Thanks
Hi there, thanks for your comment! I will send your request through to our creator team.
Thanks for excellent and clear explanation
You are welcome!
Thank you for video. Please tell me 03:58 why you have higher frequency and slowly rotation?
Thank you for your question! You’ve raised a good point. In a VFD, we work with a feeder power source, utilizing its voltage, current, and frequency to control the motor's actions. By adjusting these parameters, we can achieve the desired torque during slow startups for heavy loads, preventing motor damage. To get the results we want, we need to program the frequency, voltage, and current parameters accordingly.
If you’re a member of our platform, you can learn more about these drives and their general applications. You can check those out over here: www.realpars.com/courses
Happy learning!
The check valve (2:06) is drawn backwards. It will not allow flow in the direction animated in the video.
At 2:08, is the check valve symbol in the correct orientation? I thought the "eye" always looked in the direction of allowed flow. Thanks.
You are correct. The orientation of the check valve is reversed if the flow is from left to right.
I NEVER comment but I’vegot to say best video explanation ever. Good job, you got me as subscriber
Thanks a million, Jose! We truly appreciate that.
Sir your videos are just great
Thanks a lot.
Thanks for your compliment, Shinoda!
Thanks for the video this just made my idea of a off grid induction motor and centrifugal pump to pressurize the water to drive pelton turbines for my hydro electric system a reality for my bitcoin mining operation, simply put much like the video i was wondering how i could control the pump speed for pressure to drive the pelton turbines to have more control on the overal out put of the generators also the electric motor is also powered by the same generators currently figuring out how to switch power sources for shutdowns for maintenance purposes where i would have to hydro systems to switch between to service but maintain electricity.
Guys those people are really awesome isn't it😍
thanks for amazing presentation , i,m a water treatment technecian .. good works REAL PARS
Very clear explained about vfd. Thanks alot
Glad it was helpful!
I work for a major American city's, public works department, and Plc's and scada systems, and even one vfd system is in use.
Sir your video is wonderful
Happy to hear that, Mansoor! Thank you!
Thanks for the video real pars.
Pls show a video on how to use a PLC to control the consumer unit of a residential building.
Thanks
Hi Dennis!
Thanks for your comment and your suggestion. I will pass this on to our course developers!
Thanks for sharing and happy learning!
Kindly make a video comparison between VFD vs Soft starter
Thank you! We have this topic on our list, hopefully, it will be up soon!
I think they are basically the same thing.
Very good
Please change the direction of the check valve as it was reversely installed
Very informative. Needed to touch up my understanding of one when I wondered as I was supplying line voltage to one. I never fully understood them.
Great to hear! Keep up the good learning :)
Very useful and perfectly explained. Thank you!
Glad you enjoyed it! Happy learning
This is the backbone of power electronics
Nice video..
Many thanks for RealPars for spreading technical knowledge with better and simple animation..
Thank you..
Thanks for your positive comment! Happy to hear that. Happy learning!
Good and easy to understand
Great!
Maybe you can visit our store to find what you need or ask for help:topstock.aliexpress.com
thank you for very good and useful information.
can we use the VFD drive in sewage pumping station?
how we calculate the power needs when we use VFD drive?
Hi Nuri,
Thanks for your comment and for your feedback!
I will happily go ahead and pass your questions on to our course developers as a topic suggestion.
Thanks again and happy learning!
Really straight-forward and simple; awesome explanation!
Great to hear that! Thanks for your support.
^^ Thanks RealPars, this is a good intro video. Great water animation on the discharge of that pump also, nice :)
Thanks for your support! Great to hear that.
Very useful video.
Thank you for existing.
Glad it was helpful! Happy learning
iam studying Engineering on electronics and instrumentation , your tutorials are helpful to me.
Great to hear that! Keep up the learning curve! Let us know if you have any questions.
Excellent information. Thanks!
Glad it was helpful!
We use VFD on boarding bridges at my job Great information great explanations
Glad it was helpful! Thanks for sharing your positive feedback
Very useful ❤
Glad to hear that!
Good Channel broo, greeting from Indonesia ~
Thank you, Lutfi!
Thanks for the informative video. The check valve direction needs to be reversed though.
Great work!
Thank you!
Keep these videos coming. Thanks
Thank you! We will. Happy learning!
VFD is a motor drive that controls AC motors, it converts AC into DC using a diode then it filters the current by a capacitor then converts DC into AC using a transistor. What a solid state motor drive
Thank you for your question! It sounds like you’re asking about the difference between a Variable Frequency Drive (VFD) and a solid-state drive. Here’s a quick explanation:
VFDs: Primarily used to control the speed and torque of AC motors by adjusting the frequency and voltage of the power supplied.
Solid-State Motor Drives: A broader category that includes VFDs but also covers drives for various motor types (AC, DC, and stepper motors). These drives use semiconductor technology to control motor functions.
We hope this clarifies things. Happy learning from RealPars!
@@realpars thank you a lot ❤️
So far, so good. These days, 3 phase VFD is used for most modern electric trains, and hybrid or full-on electric road vehicles, after the advent of integrated gate bipolar transistors (IGBT). Typically done with triple inverters (one for each phase), capable of working in both directions, for regenerative braking when required, using the 3 phase motor as an alternator.
Hi John,
Thanks for sharing your knowledge with us! We always appreciate that.
One the money with this comment
The best sounding VFD’s are found on Siemens locomotives like the BR 182 and BR 406 etc.
Nice Explanation
Thanks and welcome!
Hello..
Bro.. your videos are very informative and helpful.
Thank you!
A Very Fine Video. about a Variable Frequency Drive. Possibly used by......
Great to hear! :) Happy learning.
Perfect explanation
Glad you liked it
Glad to know what I'm resetting at work lol, I really want to learn how all the stuff I use at work works and found your videos super informative!
Glad to hear that our video course was helpful to you, Noah! Happy learning.
Its a very good explanation
That's great to hear, Silvia!
Thanks for sharing and happy learning!
Thanks. It was so much easy and explained well. 👍now vfd concept is clear to me
You are very welcome! Thanks for your support.
Informative about VFD. Thanks
keep your opinions to yourself.
great presentation, the best i have seen please keep them coming thanks.
Thanks a lot for your support!
Very informative video. Thank you! New subscriber here. Im a student in automation and its very helpful for me now as we make our thesis :)
Great to hear that! Welcome to the RealPars family!
If you have any questions, feel free to leave them in the comment section.
Just to let you know, that we also have a free course on PLC Hardware bit.ly/2XnnUrF
Happy learning!
Same for me. Very clear and helpful
At 2:20 your check valve is back to front. It would actually block water from reaching the filter.
Thank you for pointing that out. You are correct, the orientation of the check valve is reversed if the flow is from left to right.
Thanks for this video , it's easy to understand
Great to hear!
very fascinating description indeed
Thank you, Andrew!
Thankyou for this. I finally understood how IGBT works on VFD's. God bless this channel
Great to hear, Jeramel. Keep up the good learning!
Got a question! I'm a bit confused. If you start out with AC, why convert it to DC just to convert it again back to AC? What is the difference between the initial AC and the final output AC? What is the reason you can't just use the transistors to control the frequency from the original AC source?
Hi Dave, thank you for your question!
In order to change the frequency of the AC sine wave, the incoming supply must be transformed. The most effective way to do this is to convert the current to DC and then reform the AC signal at a different frequency. This process also allows the VFD to maintain a constant Volts/Hz ratio, which is important for maintaining the integrity of the motor windings over a long period of time. Inductive reactance acts as a resistor and can cause excess heat dissipation if the V/Hz ratio is not maintained. Therefore, there are multiple benefits to converting from AC to DC and back to AC, including being able to provide a cleaner (filtered) AC feed to the motor.
Hope this helps, and happy learning!
Great channel keep on 👍🏻👍🏻👍🏻👍🏻🌹
Thank you, Sultan!
Good job,now it's easy to understund
Great!
Your graphic of flow thru the water pump into the holding tank is reversed. On skid-mounted pumps the suction is on the the end of the volute & discharge pumps out the top of the pump housing.
Good information
Thank you!
Thanks for the info sir
You're very welcome!
Such a great video! Thank you so much.
Glad it was helpful! You're very welcome
Respected Sir. Nice Video .We needs more vfd video..
Thanks a lot!
Can you make a video about choosing vfd depend on application and motor type?
Thanks for your topic suggestion, Baris! I will happily pass this on to our course developers.
Happy learning!
Great video!!
Thank you!
Thanks for the information, will you please give explanation for, why we convert AC into DC then again to AC?
There are two reasons. The first is to provide a "clean" AC output to the motor. The rectification from AC to DC allows the IGBT's or SCR's to "reassemble" the AC sine wave as free of electrical noise as possible, even if there is some noise on the input circuit. Secondly, rectification and inversion is the easy and cost effective way to change frequencies on the AC circuit. In a VFD, the voltage is also adjusted as to keep a fairly constant Volts/Hz ratio. For very large motors, there are devices being developed for industry called Direct Matrix Converters which will be able to perform voltage and current conversion in one single stage without converting to DC.
Awesome job! Love these presentations. I will be building a Tumbler operating using a VFD controller on the motor. I am making a video of it now too.
Thank you, Clint!
Thank you. Helps me a lot in understanding what is VFD.
Great to hear that, Ahmad! Happy learning.
@@realpars hjhfyc6fdgitd6d6dugdutucgdtd7tx7cucjgdutcutddjttucutcudtudtudtuddu
Good job
Please do industrial networks and their classification
Thank you. I will pass your request on to our creator team.
Nice video I like it. question how can we avoid/prevent if the frequency is reduced result in the motor got damaged?
VFD's do place a strain on a standard motor, due to the magnetic fluctuations and heat dissipation when using a VFD. That is why it is important to use an inverter-rated motor and to use a quality VFD that can hold the Volts/Hertz ratio as constant as possible to limit heat dissipation at lower speeds.
very very good describe sr thnx
sir, why we are converting ac to dc and dc to ac?.is it for changing the frequency of supply? is t possible to change ac frequency without changing to dc?
謝謝！
Thank you very much!
Sir your videos are very informative but sorry to say in this video you did not explain deeply about vfd. How we can control frequency how much minimise and maximise the frequency. What is the function of PWM how it works and which components use in PWM card for controlling the frequency
Thank you for your feedback @greenpakistan3184. Yes, you are correct. Our video is meant to be a short version of the real technical version. There is only so much we can say in 8 minutes or so. If you have not signed up for our free trial, I would recommend that you take advantage of it and learn more from us on this topic. To add more to this, VFD engineering varies between drive manufacturers, with some similarities. Here is a link to a book company where you can purchase hard copies or eBooks to learn with our lessons: www.atplearning.com/
Thanks. Can you tell me, what is minimum kilowatt motor that autotuning possible through vfd ?
Technically, if the VFD has the option for auto-tuning, you can configure auto-tuning for whatever KW rating the VFD is rated for. Practically speaking, since auto-tuning is performed to improve the efficiency of the motor performance, tangible (measurable) benefits will not likely be seen for motors less than 5Hp (3.275kW).
Very very nice!
Thank you, Fernando!
Informative video! Suppose we have a traditional inductive motor with maximum 1400 RPM, then we connect that motor to a VFD, here is the question: Does it possible to increase the RPM of the same motor more than 1400 RPM by increasing the frequency? And does the power consumption will increase?
It is possible to overspeed a motor by setting the frequency above the nameplate frequency. However, motor torque will start to decrease above 100% speed. This occurs because the faster speed leads to increased slip, which robs the motor of torque and converts the excess energy into heat and efficiency loss. Overspeeding a motor is sometimes done with fans, but there can be adverse effects of doing so. Power consumption depends on the loads that are connected to the motor.
@@realpars
In my case it's a water pump one horse power 746 watts, my plan to make a basic inverter or a soft starter circuit in order to run that motor on UPS 12/220v--1200 watts,but I face problem that my UPS circuit breaker cutting off due to rough start
Very Simple and Easy-to-follow explanation.
Thank You
You are very welcome, Michael!
Hii this is Swathi from India
Did u heard about SFC and FCMA starters
If you did please make a video on them..and i must tell you your channel content is so helpful to my work.. thank you ☺️
Hey Bhattu!
Thanks for your comment and your suggestion. I will pass this on to our course developers!
Thanks for sharing and happy learning!
Thanks for information.
It was very useful.Thank you.
Happy to hear that, Tahsin! Thanks for sharing!
Great information to learn. I would love to make a video like this covering panelboard. what software you used ? please advice
Hi Abbas,
Thanks for your comment!
I am not sure about this as this is done by our graphic and animation department.
Sorry about that.
dear sir can we use this motor for inducing pulsatile flow of fluid in a tube
You could try, but it is best to use a reciprocating or positive displacement type pump to induce pulsating flow. These types of pumps are usually not controlled by a VFD.
Nice video, thanks :)
Glad you liked it!
Hi,
I have trouble with my VFD, I found a zener diode breaked out. What is the role of zener diode around the IGBT usually ?
Best regards ;)
usually to protect the gate from exceeding 15 volts above the emitter. IGBTs have a maximum emitter-gate voltage of about 20 volts max. Anything between 10 and 15 volts is high enough to ensure full ON status. Anything over 20 volts can punch through the gate insulation barrier, and destroy the transistor.
Thank you for posting. Great intro video.
You're very welcome!
it's very use full thanks.
Great to hear that!
Very nice method to explore
Happy learning, Zeeshan!
Thanks for the video I thought VFD would give more torque at the initial start up to reduce mechanical load than it can regulate it either manually or automatically by using PLC.