Today, I will build a boost converter module to step up 48V to 350V for my solar power system. This is an upgrade after six months of operation. Previously, I used a 3KW boost converter, which often experienced overload issues, and the overall efficiency was only around 85%. With the new system, the power capacity is increased to 4KW, and efficiency has improved to 90%. This improvement is thanks to my use of an H-bridge circuit to replace the push-pull circuit and substituting the EI transformer core with an amorphous transformer core.
Hi, I have 94 - 95 % efficinecy in my boost at 30 - 35 AMPS IN, but my FETs have large Rdson, so there is plenty of room to make efficiency better, and also modulate SW frequency to lower also swithing loses.
This boost module will integrate with a grid-tie inverter. When the electricity generated by the solar panel exceeds the demand, the excess energy will be stored in a lithium battery. When the solar energy produced is less than the demand, the battery will discharge to supply power to the household. My system will maximize the utilization of energy generated by the solar panels. The cost is significantly lower compared to expensive hybrid inverter systems.
So you produce voltage for DC BUS at 90 % eff. than use grid-tie, with 95 % eff. to to supply power to AC-DC charger 240 AC - 48 V DC, to charge 48 V - 16S LFP ? Eff. of LFP is 97 % avg., so you have 0.9 x 0.95 x .9 x .97 === 74.6 % total eff. at the input to LFP, and to use energy from LFP you have another unefficient DC-AC inverter, so you have another 5 - 8 % losses again ?
I am using a Grid Tie inverter with a limiter. If I connect it directly to the PV, it will only operate during the day (of course). Furthermore, at noon, when solar energy is at its peak, I don't use much electricity. Therefore, the energy from the PV will be wasted. With my system, I can utilize the surplus energy to charge the battery and use it at night, or when the PV is insufficient, the battery will discharge to supply the load.
Impressive video, Awesome Tech. Looking forward to your next upload. I clicked the thumbs up icon on your content. Keep up the fantastic work! Your explanation of the H Bridge structure and its advantages was really enlightening. How do you anticipate the efficiency will change with varying load conditions in the new design?
If we use an H-bridge, we don't need MOSFETs with high Vds voltage like in the case of a push-pull configuration. Low-voltage MOSFETs have a lower Rds On and are more cost-effective. They also generate less heat during operation. Additionally, transformer design becomes simpler. However, the efficiency is only higher than push-pull when using high input voltages (48V or more). For 12-24V systems, push-pull is still my choice. As for efficiency with different loads, since I use it for grid-tie inverters, I don’t concern myself with that issue. Grid-tie inverters can work with all types of loads with excellent efficiency (over 95%).
My grid-tie inverter can operate within a voltage range of 70-550V. I will increase the voltage to around 400VDC. Higher voltage will reduce the current, which in turn reduces the losses on the diode.
I am using a Grid Tie inverter with a limiter. If I connect it directly to the PV, it will only operate during the day (of course). Moreover, at noon, when the solar power is at its peak, I don't use much electricity. Therefore, the energy from the PV will be wasted. As a result, my system includes an MPPT charger to charge a 51.2V-150Ah lithium battery. Then, the 51.2V is stepped up to 350V and supplied to the grid-tie inverter.
@@PhdHung I'm doing the opposite. I realize that the solar energy input is not stable, any variation is returned to the utility company. So I did a stepDown of each panel to 26v and put it in parallel at the battery input.
This boost module will integrate with a grid-tie inverter. When the electricity generated by the solar panel exceeds the demand, the excess energy will be stored in a lithium battery. When the solar energy produced is less than the demand, the battery will discharge to supply power to the household. My system will maximize the utilization of energy generated by the solar panels. The cost is significantly lower compared to expensive hybrid inverter systems.
Can you show GATE drive distortion at oscilloscope and also ripple of voltage on the DC BUS ? Can this bulk capacitor cope with such large noise and ripple from switching all this FETs ? Where if low impeedance capacitor in parallel with this electrolytic caps ? Can you place thermal image of overheating of caps, which are not dimensioned properly for ripple current and are placed in the vicinity of hot fets ?
Because I use it for grid-tie inverters, and inside these inverters, there are four 560uF - 550V capacitors connected in parallel. The output voltage will be very clean. If used for other purposes, the two filter capacitors on the board are not sufficient; we need to add external filter capacitors.
@@PhdHung Thanks for answer. Is there some number for DC-AC full bridge you have like THD ? How can this inverter cope with inductive load PF == 0.3 or capacitive load ? What happens if I switch ATX power supply which droves 120 - 150 AMPS at 230 V to charge CAPS through NTC ?
With a grid-tie inverter, you can use it for all types of different loads. It can handle a power factor (PF) between 0 and 1, or loads with peak power or loads with power much higher than the inverter’s capacity. If the inverter doesn't provide enough power, the load will draw additional power from the grid. I am using the Sofar 3300TL-G3. You can read more information in the manual. www.sofarsolar.com/upload/file/20240311/1710121923451047146.pdf
This boost module will integrate with a grid-tie inverter. When the electricity generated by the solar panel exceeds the demand, the excess energy will be stored in a lithium battery. When the solar energy produced is less than the demand, the battery will discharge to supply power to the household. My system will maximize the utilization of energy generated by the solar panels. The cost is significantly lower compared to expensive hybrid inverter systems.
Hello sure i am Big fun of your channel. I have a question about boost converter how to calculate the right value of capacitor and inductor thanks a lot
Today, I will build a boost converter module to step up 48V to 350V for my solar power system. This is an upgrade after six months of operation. Previously, I used a 3KW boost converter, which often experienced overload issues, and the overall efficiency was only around 85%. With the new system, the power capacity is increased to 4KW, and efficiency has improved to 90%.
This improvement is thanks to my use of an H-bridge circuit to replace the push-pull circuit and substituting the EI transformer core with an amorphous transformer core.
Amazing sir
Dir Sir, why it is not possible to create a schematic and put it as PDF to the project .ZIP ?
I ask not only for this project - for the future also.
Hi, I have 94 - 95 % efficinecy in my boost at 30 - 35 AMPS IN,
but my FETs have large Rdson, so there is plenty of room
to make efficiency better, and also modulate SW frequency
to lower also swithing loses.
This boost module will integrate with a grid-tie inverter. When the electricity generated by the solar panel exceeds the demand, the excess energy will be stored in a lithium battery. When the solar energy produced is less than the demand, the battery will discharge to supply power to the household. My system will maximize the utilization of energy generated by the solar panels. The cost is significantly lower compared to expensive hybrid inverter systems.
So you produce voltage for DC BUS at 90 % eff. than use grid-tie, with 95 % eff.
to to supply power to AC-DC charger 240 AC - 48 V DC, to charge 48 V - 16S LFP ?
Eff. of LFP is 97 % avg., so you have 0.9 x 0.95 x .9 x .97 === 74.6 % total eff.
at the input to LFP, and to use energy from LFP you have another unefficient
DC-AC inverter, so you have another 5 - 8 % losses again ?
I use an MPPT charger to charge the battery.
I am using a Grid Tie inverter with a limiter. If I connect it directly to the PV, it will only operate during the day (of course). Furthermore, at noon, when solar energy is at its peak, I don't use much electricity. Therefore, the energy from the PV will be wasted. With my system, I can utilize the surplus energy to charge the battery and use it at night, or when the PV is insufficient, the battery will discharge to supply the load.
Viedeo tiếng Việt: th-cam.com/video/NDZFXFG4aks/w-d-xo.html
Impressive video, Awesome Tech. Looking forward to your next upload. I clicked the thumbs up icon on your content. Keep up the fantastic work! Your explanation of the H Bridge structure and its advantages was really enlightening. How do you anticipate the efficiency will change with varying load conditions in the new design?
If we use an H-bridge, we don't need MOSFETs with high Vds voltage like in the case of a push-pull configuration. Low-voltage MOSFETs have a lower Rds On and are more cost-effective. They also generate less heat during operation. Additionally, transformer design becomes simpler. However, the efficiency is only higher than push-pull when using high input voltages (48V or more). For 12-24V systems, push-pull is still my choice. As for efficiency with different loads, since I use it for grid-tie inverters, I don’t concern myself with that issue. Grid-tie inverters can work with all types of loads with excellent efficiency (over 95%).
Uou!! But, why 350V ?
My grid-tie inverter can operate within a voltage range of 70-550V. I will increase the voltage to around 400VDC. Higher voltage will reduce the current, which in turn reduces the losses on the diode.
@PhdHung Do you step-up the batteries to then connect them with the photovoltaic panels at the solar input?
I am using a Grid Tie inverter with a limiter. If I connect it directly to the PV, it will only operate during the day (of course). Moreover, at noon, when the solar power is at its peak, I don't use much electricity. Therefore, the energy from the PV will be wasted. As a result, my system includes an MPPT charger to charge a 51.2V-150Ah lithium battery. Then, the 51.2V is stepped up to 350V and supplied to the grid-tie inverter.
@@PhdHung I'm doing the opposite. I realize that the solar energy input is not stable, any variation is returned to the utility company. So I did a stepDown of each panel to 26v and put it in parallel at the battery input.
Доброго дня! Скажіть будь ласка, який коефіцієнт трансформатора струму?
Please how do you use it?
This boost module will integrate with a grid-tie inverter. When the electricity generated by the solar panel exceeds the demand, the excess energy will be stored in a lithium battery. When the solar energy produced is less than the demand, the battery will discharge to supply power to the household. My system will maximize the utilization of energy generated by the solar panels. The cost is significantly lower compared to expensive hybrid inverter systems.
Thanks boss
Can you design inverter that uses pic16f72 pure Singh wave with. LCD ?
Can you show GATE drive distortion at oscilloscope and also ripple of voltage
on the DC BUS ? Can this bulk capacitor cope with such large noise and ripple
from switching all this FETs ? Where if low impeedance capacitor in parallel
with this electrolytic caps ? Can you place thermal image of overheating
of caps, which are not dimensioned properly for ripple current and are placed
in the vicinity of hot fets ?
Because I use it for grid-tie inverters, and inside these inverters, there are four 560uF - 550V capacitors connected in parallel. The output voltage will be very clean. If used for other purposes, the two filter capacitors on the board are not sufficient; we need to add external filter capacitors.
@@PhdHung Thanks for answer. Is there some number for DC-AC full bridge you have like THD ? How can this inverter cope with inductive load PF == 0.3 or capacitive load ?
What happens if I switch ATX power supply which droves 120 - 150 AMPS at 230 V to charge CAPS through NTC ?
With a grid-tie inverter, you can use it for all types of different loads. It can handle a power factor (PF) between 0 and 1, or loads with peak power or loads with power much higher than the inverter’s capacity. If the inverter doesn't provide enough power, the load will draw additional power from the grid. I am using the Sofar 3300TL-G3. You can read more information in the manual. www.sofarsolar.com/upload/file/20240311/1710121923451047146.pdf
Awesome project ❤
Pleas sir answer me
Can u make inverter with out iron transformer.?
3kw or 5kw.?
HI..Have you made a speaker magnet charger?
I never have. I'm not an audio enthusiast.
Faça uma vídeo com o modelo de ligação
Which ic use for H bridge cicuit?
SG3525
Can I get sg 3525 driver circuit diagram?
It’s in my previous video.
So the secondary is at 60hz with the skin depth being larger, like around 8mm. As opposed to .5mm for the 25khz primary with the litz?
Gdt core size and turn retio?
EE16 50:50:50
What is its function?
This boost module will integrate with a grid-tie inverter. When the electricity generated by the solar panel exceeds the demand, the excess energy will be stored in a lithium battery. When the solar energy produced is less than the demand, the battery will discharge to supply power to the household. My system will maximize the utilization of energy generated by the solar panels. The cost is significantly lower compared to expensive hybrid inverter systems.
Thank you for this post but I need a schmatic circuit diagram😢
ماهي الطريقة او اسم البرنامج الذي يفتح هذه الملفات المرفوعة على .. الميديا فاير وشكرا
Please next video Pic16f716 spwm module
I haven't used PIC anymore. Recently, I switched to STM32 because it is cheaper.
Think sir please share stm32 spwm module
Pleas sir how can I contact you for business purposes.??
Bro. Make video on gdt transformer
Hello sure i am Big fun of your channel. I have a question about boost converter how to calculate the right value of capacitor and inductor thanks a lot
very good😊
FIRME CON TIGO
Wow 😲
thanks for watching
💯
Ai voice..
thanks for watching