Excellent explanation .... thanks. It is mentioned that the Torque value is same at 0, 50% and 100% speed. The question how can we get Torque value at zero speed? As to these equations Φ ≈ E/F & T= K Φ IW - Where Flux (Φ), torque (T) & Working or torque producing current (Iw), when speed is zero the flux is zero and then the T is zero?
A Very good explanation.... but can you please elaborate on the types of applications like Contant torque and variable torque applications further with their equations and speed torque characteristics.... Thanks
I am a retired sparky who worked on drives for 30 years. Best drives were those not made in cheating lack of quality control communist china. My favorite drive compamy was Danfoss due to quality products great tech support and eady to get spare parts. Allen Bradley are great. Went to a drive class grom them for a week. Hated prima donna ABB. Would always give me run around.
Leslie, are you asking if you can use a VFD with your induction heater? If it has an electric motor, yes. You will need to derate a 3 phase to 3 phase VFD to use with single phase power. Meaning you need a VFD twice as big as your motor, so about 40kVa (32kW / 42HP). Use your motor FLA as a measuring unit. Hope that helps.
do i really need to run a motor to produce the third charge and are capacitors essential as well? i'm guessing induction heater produces amps at about 17mv not sure what that means but the volts are 300-500v, still learning, sure wish a switch board could do that or safety plug, is it true that nz electricity is far to high voltage, or do i need a safetey trip switch, what is the wall unit that converts single phase wall plug of house over to amps AC? or do i just use a DC / ac inverter? because i don't want to use petrol or ./diesel i hear induction heaters can run on 1kva does a electric motor serve as alternator ac producer as well as motor running, i'm sure it's more about charging big capacitors, i won't know until mid year tbh
Excellent explanation .... thanks.
It is mentioned that the Torque value is same at 0, 50% and 100% speed.
The question how can we get Torque value at zero speed? As to these equations Φ ≈ E/F & T= K Φ IW - Where Flux (Φ), torque (T) & Working or torque producing current (Iw), when speed is zero the flux is zero and then the T is zero?
A Very good explanation.... but can you please elaborate on the types of applications like Contant torque and variable torque applications further with their equations and speed torque characteristics.... Thanks
How much recovery time is needed between periods of overload? is that a parameter than can be provided as a specification?
Sir, can you explain about Triac,IGBT and Thyristors... Thank You
Thank you!
Please anyone explain the terminal functions .im good with 3ph in and 3ph out .
Thanks guys
Can u guide me which VFD is best suited for 20hp induction motor 3-phase reciprocating air compressor??
I am a retired sparky who worked on drives for 30 years. Best drives were those not made in cheating lack of quality control communist china. My favorite drive compamy was Danfoss due to quality products great tech support and eady to get spare parts. Allen Bradley are great. Went to a drive class grom them for a week. Hated prima donna ABB. Would always give me run around.
thanks the explanation !
All.best
Can these power single phase to 3 phase induction heater over 20 kva?
Leslie, are you asking if you can use a VFD with your induction heater? If it has an electric motor, yes. You will need to derate a 3 phase to 3 phase VFD to use with single phase power. Meaning you need a VFD twice as big as your motor, so about 40kVa (32kW / 42HP). Use your motor FLA as a measuring unit. Hope that helps.
do i really need to run a motor to produce the third charge and are capacitors essential as well? i'm guessing induction heater produces amps at about 17mv not sure what that means but the volts are 300-500v, still learning, sure wish a switch board could do that or safety plug, is it true that nz electricity is far to high voltage, or do i need a safetey trip switch,
what is the wall unit that converts single phase wall plug of house over to amps AC? or do i just use a DC / ac inverter? because i don't want to use petrol or ./diesel
i hear induction heaters can run on 1kva
does a electric motor serve as alternator ac producer as well as motor running,
i'm sure it's more about charging big capacitors, i won't know until mid year tbh
isn't there supposed to be a trasnformer infront of the motor?
what does a vfd do again?
Submarsible motor which torque??
There is no torque at zero speed. It's static, there is no load being applied. You could say there is " Potential Torque" at zero speed.