Homemade 2000w power inverter with circuit diagrams

Few days ago, GoHz made a 24V 2000W power inverter in home, sharing some design schematics and circuit diagrams.

2000w power inverter testing
Power inverter testing. The picture was taken in short-circuited.

2000w power inverter output pure sine wave
Output waveform. The SPWM accuracy of EG8010 was not high enough waveform, so the inverter output was not good enough as pure sine wave. The dead zone time was a bit long (1uS), where the zero-crossing point did not look good, in order to ensure the safety of the tube, GoHz did not adjust it.

2000 watt inverter full load testing
This was a full load test on the power inverter, two water heaters, about 2000 watt, the water was boiling completely. Maximum connected load was 3000 watt for approx 10 seconds, due to the DC power supply limitation (paralleling a large DC battery and two small batteries), GoHz did not continue test it. Adjust the inverter power limitation potentiometer, limit the maximum power at 2500 watt, (a little greater than 2500 watt), the power inverter works for less than two seconds before it turn off the output. Short circuit protection is also set about two seconds to turn off the output. Due to the EG8010 programming reason, the power inverter will continuous work after a few seconds if the power supply is not cut off. This power inverter has a good starting ability, it only takes about 1 second for two parallel 1000 watt solar lamps. This inverter is designed to power about 2200 watt, the headline of this paper is 2000 watt is because the DC power supply maximum output current is 100A, so GoHz tested it at 2000 watt, for more than 12 hours testing, it can work well at 2000 watt, there would be no problem for the actual load at 2500 watt.

2000 watt power inverter D level waveform
This is the foreline tube D level waveform when the power inverter was in 2000w full load.

2000w inverter D level waveform
Expanding the foreline tube D level waveform when the inverter in 2000w full load.

2000 watt inverter no-load power consumption testing
This is the power inverter in no-load power consumption test.
It can be seen from two multimeter, no-load power consumption is 24.6 * 0.27 = 6.642W, no-load consumption is relatively low, it can be used for photovoltaic, car batteries and other new energy systems.

2000w sine wave inverter toroidal transformer
Forward toroidal transformer. Stacked two 65 * 35 * 25mm ferrite ring, primary 3T + 3T with 16 1mm wires, the secondary was used very fine multi-strand wire tangled wound of 42T, auxiliary power 3T.

2000 watt pure sine wave inverter DIY circuit
Using 4 pairs ixfh80n10, 80A, 100V, 12.5 milliohms resistors. Rectifiers are 4 set MUR1560, two large electrolytic 450V470uF, 4 35V1000uF Japanese chemical capacitors for 24V DC input.

homemade 2000w power inverter
Backward power tube is 4 set FQA28N50, output inductor is sendust 52mm with 1.5mm enameled wire wrap 120T, inductance 1mH, capacitors are 2 set 4.7uF safety capacitors. Two high frequency arm FQL40N50, and two low frequency arm FQA50N50.

2000 watt power inverter short circuit testing
Short circuit test. This power inverter is sensitive in short circuit protection, after more than 100 times short circuit tests (power on short circuit, no-load short circuit, full load short circuit, loading short circuit), the power inverter is still work good. The output terminals of the inverter and the tweezers were scarred.

Here is the circuit section, get understanding the basics of this power inverter, DIY an inverter now.

2000w inverter dc-dc power circuit schematic
Forward board DC-DC power circuit board, conventional push-pull. (Download PDF file)

2000 watt inverter dc-dc circuit driver schematic
Forward DC-DC circuit driver schematic. It has undervoltage, overvoltage, overcurrent protection, overcurrent protection is implemented by test tube drop. The circuit is conventional SG3525 + LM393. (Download PDF file)

2000w sinewave inverter dc-ac circuit schematic
Backward DC-AC schematic, using conventional circuit too, there is nothing new places, the unique is the additional high-voltage detection circuit, means when the DC voltage is higher than 240V DC, the auxiliary power is turned on, and the backward circuit is beginning to work. In debugging, add a function of turning off the SPWM drive circuit when the auxiliary power drops, to prevent the inverter bombing incidents when the auxiliary power supply drops but the DC voltage was still high, by adding this function, we can shut down the power inverter in short circuit. (Download PDF file)

2000w inverter SPWM driver circuit schematic
SPWM driver board circuit, EG8010 + IR2110, to detect the voltage drop for short circuit protection. (Download PDF file)

Related paper: Car Power Inverter Buying Guide

Buying a pure sine wave inverter on GoHz.com, 300w inverter, 500w inverter, 1000w inverter...

Leave your comment (Registered user only)


7/29/2023 7:28 AM
Hi can I get a complete BOM because there is no part number for some components in the schematics
8/11/2022 5:10 AM
kindly let me know function of the C6, D29, C7, R72 voltage divider network of SPWM circuit ?
12/2/2021 12:51 AM
First of all i have to say thank you for sharing this results of your work.
I really see BEAUTY in your designs they are perfectly artful.
i have many questions about this, and the other versions of your designs mostly around the reasons, techniques, component picking and...
unfortunately you did not explain the circuit completely and once again Unfortunately you did not answer the comments even.
I hope you do so and give me some help the way you prefer.
12/29/2020 4:26 PM
12/14/2020 11:10 PM
Thanks for sharing this info.
12/9/2020 6:34 AM
Can I use another driver apartfrom this EG8010
12/3/2020 9:31 PM
6/1/2020 8:26 PM
Are the inverter notes available as a pdf file
10/28/2019 7:27 PM
i want to build this at 120 vac. how much is the board and the components and how can i get it from you?

9/5/2019 9:53 PM
hola amigo puede compartir el pcb en modo planchado. gracias
6/25/2019 12:00 PM
i want to build this how much is the board and the components and how can i get it from you.
Email : mail2kelandcity@gmail.com
6/5/2019 4:46 AM

is there any complete partlist  of the components in this inverter? i want to build this
2/17/2019 3:39 PM
11/8/2018 9:35 PM
Hi sir,
the  work  seems  good  and   useful but  diagrams  are  quite  complicated  and  without  some indication  of  components  used.
Anyway  thank you.
7/27/2018 2:34 PM
Hello I made a 1000w sinus inverter and used eg8010 as yours. I was looking for short circuit protection circuit. I made your voltage drop detection circuit low side of hv mosfets. But it didn't work. I connect SD pin in the spwm driver circuit to sg3525 shutdown pin. is it right?
can you please help me?

Sezgin Kır
6/3/2018 2:41 AM
Dear Sir, Have you got any boards for sale I like to use to power Tube Power Amplifiers.Await a email from you Thx. Peter
5/15/2018 7:02 PM
good evening please can i get circuit diagram for 1000watt inverter. ofem, bassey is my name. ofembassfortune@yahoo.com
5/1/2018 12:29 PM
I don't understand how the gates of the mosfets (Q17 t/m Q23) are driven. Could you please explain?
3/24/2018 6:54 PM
Good evening please can I get complete 1000watts Inverter circuit diagram akintundelaka@yahoo.com
11/30/2017 11:58 PM
Hi, can you explain the RCD snubber circuit, and how do you choose the value  of the capacitor and the resistor?

11/27/2017 2:41 PM
Please I've built a similar inverter but when I charge the inverter by switching the two low sides at the same time the MOSFETs are always damaged
11/16/2017 1:56 PM
want to help out with my clan ? the name is krusty klown klan
11/4/2017 1:12 PM
100 ohm resistor for shunt !!?
10/2/2017 3:57 PM
Hi,what mosfet or IGBT did you use?
6/20/2017 10:41 AM
The diagrams look very confusing and not complete enough!
6/13/2017 6:14 PM
very good...
4/29/2017 12:21 AM
Very good
3/9/2017 7:11 PM
AC (240V) to DC (334V) to Ac jump Hz to 40,000 and back to DC (300V).

This creates a nonlinear system with 40 A being drawn from the AC power supply while putting out 68 A in the DC application.

I can buy a power supply From Victor however the boards overheat and burn up.  The two rectifiers required have a manufactured cost of approximately $50 each and are made out of components rated at 1500 V and 100 A.  A basic component inverter is what I am seeking.  Can you help?

David M Tierney
610 372-6015

2/14/2017 8:47 PM
Nice stuff thank you
12/17/2016 4:28 AM
12/12/2016 8:22 PM
Thank u 4 help
Best regards

Eng: Ebrahim Saber
11/28/2016 6:53 AM
can i change ferrite ring by Laminated core transformer  
10/28/2016 5:41 PM
10/5/2016 6:40 PM
Hi. I am highly delighted for this article. More power to your elbow.I have few questions on some of the aspect that are not all that clear. Please, what type of toroid cores you use ( I mean the manufacturer and size/label). Also the SPWM IC used (EG8010) is not known how can I getit. Or do you offer these components for sale.
9/13/2016 5:15 PM
input 12v ??