This is a simple sine wave inverter circuit without programming.
Pure sine wave inverter circuit with no center tap design has become simple by using EGS002 Sinusoidal Inverter Driver Card. This post will give explain how to make a pure sine inverter at home without any programming. Let me start this tutorial by first introducing you to EGS002 DRIVER BOARD.
Build your own MPPT read here
EGS002 is an already made 17pins plug and play driver board specific for single phase sinusoidal inverter. It uses ASIC EG8010 as control chip and IR2110S as driver chip. The driver board integrates functions of voltage, current and temperature protection, LED warning indication and fan control. Jumper configures 50/60Hz AC output, soft start mode and dead time.
The driver board has an LCD monitor port. A connected LCD monitor will display Output voltage, current, system temperature and Output frequency. The board will still work even when no display is connected.
The board can be used for two stage AC converter (DC-DC-AC) or DC-AC single stage low power frequency transformer systems. In this tutorial, we are going to limit ourselves to Low frequency transformer systems. That is no center tap transformer inverter.
Lets now take a look at our EGS002 card and its pins. You can download the pdf. datasheet of the card by clicking here
EGS002 DISPLAY CONNECTION
The board has several functions which the user can activate or select by using
jumper or soldering the points together. The image below provides the jumper setting if the default is not wanted.
SINE WAVE INVERTER MOSFET BRIDGE BOARD
Now that you have fair idea of the sine inverter card, plug the card into the circuit below. the below circuit will work without any modification when using 12V or 24V battery system. To use 48V or higher Dc voltage designs, you have to step down the higher DC voltage to 12V using a buck converter or an appropriate Step down IC and later use 7805 to get your 5V.
Please note that LM7805 and LM7812 will burn when the input is more than 30V DC.
SINE WAVE INVERTER CIRCUIT
to make your own transformer for this circuit click below
Read more on make inverter transformer
With this circuit, you only fix your card pins to the corresponding circuit pins. Output regulation is achieved by adjusting the 10K variable resistor. U6 is 10K NTC for temperature sensing and fan regulation. The 220V ac output of this power inverter is protected from power surge using Power NTC 10ohms.
The egs002 card can be used for all voltage systems.
But 24 and 48V systems will need a voltage conveter.
YOU CAN READ ON HOW TO MAKE SMPS VOLTAGE CONVERTER BY CLICKING THIS TEXT
The feedback can also be achieved by using a separate 12V transformer instead of one transformer with a separate winding.
WATTAGE
The wattage of the inverter depends on the number of mosfets you will connect in parallel. Add more mosfets in parallel for high output power. Every 4 Mosfets will switch 250W in 12V system, 500W in 24V system and 1000w in 48V system. I hope you can make your calculation from it as to how many Fets to connect in parallel to get a certain wattage.
WHERE TO BUY THE SINE WAVE INVERTER DRIVER CARD
You can buy it on ebay or Ali express at 6 to 18 dollars with delivery time up to 40 working days.
You can also buy the BRIDGE BOARD from me by stating the wattage
Contact me on +233273315313 or opanin17@gmail.com
BATTERY PROTECTION AND LOW BATTERY ALARM
The inverter battery is very expensive and must be protected to prolong its life. when the battery is drained too low, the battery expected life will be shortened. connect the positive lines of my battery protection circuit to J1 and negative to the ground. Battery protection circuit can be seen by clicking this link
OVERLOAD PROTECTION FOR THE SINE WAVE INVERTER CARD
Overload protection protects the inverter from failing when the output is shorted or load exceeds maximum load. The sine wave driver board has an inbuilt current sense which shuts down the inverter when max current is exceeded. Pin 1 of the card is dedicated to this function. The current sense uses a shunt resistor. Shunt value is selected such that at maximum current, The voltage drop will be 0.5V. This prompts the system that there is an overload so that the system turns off until overload cause is removed.
The formulae for calculating the shunt resistance are:
1. R= 0.6 ( V/ I max) where V=0.5, I=Max DC switching current. and R = Shunt value.
read how to calculate max drive stage current from
Inverter repairs
http://manycircuits.blogspot.com/2017/05/inverter-circuit-with-charger.html
Pure sine wave inverter circuit with no center tap design has become simple by using EGS002 Sinusoidal Inverter Driver Card. This post will give explain how to make a pure sine inverter at home without any programming. Let me start this tutorial by first introducing you to EGS002 DRIVER BOARD.
EGS002 DRIVER BOARD/CARD
Build your own MPPT read here
EGS002 is an already made 17pins plug and play driver board specific for single phase sinusoidal inverter. It uses ASIC EG8010 as control chip and IR2110S as driver chip. The driver board integrates functions of voltage, current and temperature protection, LED warning indication and fan control. Jumper configures 50/60Hz AC output, soft start mode and dead time.
The driver board has an LCD monitor port. A connected LCD monitor will display Output voltage, current, system temperature and Output frequency. The board will still work even when no display is connected.
The board can be used for two stage AC converter (DC-DC-AC) or DC-AC single stage low power frequency transformer systems. In this tutorial, we are going to limit ourselves to Low frequency transformer systems. That is no center tap transformer inverter.
Lets now take a look at our EGS002 card and its pins. You can download the pdf. datasheet of the card by clicking here
EGS002 DISPLAY CONNECTION
The board has several functions which the user can activate or select by using
jumper or soldering the points together. The image below provides the jumper setting if the default is not wanted.
SINE WAVE INVERTER MOSFET BRIDGE BOARD
Now that you have fair idea of the sine inverter card, plug the card into the circuit below. the below circuit will work without any modification when using 12V or 24V battery system. To use 48V or higher Dc voltage designs, you have to step down the higher DC voltage to 12V using a buck converter or an appropriate Step down IC and later use 7805 to get your 5V.
Please note that LM7805 and LM7812 will burn when the input is more than 30V DC.
SINE WAVE INVERTER CIRCUIT
to make your own transformer for this circuit click below
Read more on make inverter transformer
With this circuit, you only fix your card pins to the corresponding circuit pins. Output regulation is achieved by adjusting the 10K variable resistor. U6 is 10K NTC for temperature sensing and fan regulation. The 220V ac output of this power inverter is protected from power surge using Power NTC 10ohms.
The egs002 card can be used for all voltage systems.
But 24 and 48V systems will need a voltage conveter.
YOU CAN READ ON HOW TO MAKE SMPS VOLTAGE CONVERTER BY CLICKING THIS TEXT
The feedback can also be achieved by using a separate 12V transformer instead of one transformer with a separate winding.
WATTAGE
The wattage of the inverter depends on the number of mosfets you will connect in parallel. Add more mosfets in parallel for high output power. Every 4 Mosfets will switch 250W in 12V system, 500W in 24V system and 1000w in 48V system. I hope you can make your calculation from it as to how many Fets to connect in parallel to get a certain wattage.
WHERE TO BUY THE SINE WAVE INVERTER DRIVER CARD
You can buy it on ebay or Ali express at 6 to 18 dollars with delivery time up to 40 working days.
You can also buy the BRIDGE BOARD from me by stating the wattage
Contact me on +233273315313 or opanin17@gmail.com
BATTERY PROTECTION AND LOW BATTERY ALARM
The inverter battery is very expensive and must be protected to prolong its life. when the battery is drained too low, the battery expected life will be shortened. connect the positive lines of my battery protection circuit to J1 and negative to the ground. Battery protection circuit can be seen by clicking this link
OVERLOAD PROTECTION FOR THE SINE WAVE INVERTER CARD
Overload protection protects the inverter from failing when the output is shorted or load exceeds maximum load. The sine wave driver board has an inbuilt current sense which shuts down the inverter when max current is exceeded. Pin 1 of the card is dedicated to this function. The current sense uses a shunt resistor. Shunt value is selected such that at maximum current, The voltage drop will be 0.5V. This prompts the system that there is an overload so that the system turns off until overload cause is removed.
The formulae for calculating the shunt resistance are:
1. R= 0.6 ( V/ I max) where V=0.5, I=Max DC switching current. and R = Shunt value.
read how to calculate max drive stage current from
Inverter repairs
http://manycircuits.blogspot.com/2017/05/inverter-circuit-with-charger.html
Hi, you haven't specified the mosfet number. IRFZ44N or IRF3205N? Is the board configured as unipolar or bipolar?
ReplyDeleteHi, Any N-Chanel mosfet will work.
DeleteBut always make sure that the maximum voltage of your mosfet is at least twice your system voltage.
eg. You can use 3205 or Irfz44 for 12V systems and 24V systems.....But cannot be used for 48V systems since their max voltage is 55V
I have started liking this Board especially when one considers the simplicity and the low cost of acquisition. I have decided to convert all my single stage modified UPS/inverters to pure sine-wave ones using your circuit schema. How does it fare in terms efficiency?
ReplyDeleteVery efficient with clean output
Deletesuggest egs002 and boost PFC circuit using same h bridge for 48v system. is it possible to switch off egs002 when mains on and shift same h bridge to boost PFC SG3524.
ReplyDeleteYes its possible. I have done that before using 8pins relay
ReplyDeletePretty good post. I just stumbled upon your blog and wanted to say that I have really enjoyed reading your blog posts. Any way I'll be subscribing to your feed and I hope you post again soon. Big thanks for the useful info.
ReplyDeleteRobinets de Lavabo
Pls, my questions go this way.
ReplyDelete1) is the value of the 10k BTC critical?
2)now, if you want to use a single transformer for both the inverting and charging from the mains, what modifications are needed in your circuit?
1. The 10k is not critical depending on how hot you want your sysyem to be before fan starts.
Delete2. You need high skills in this very circuit because the card doesnt have charging code.
You can however acheive that using a relay to disconnect the gate drive and switching the the low side mosfets at 20kz-27kz.with an external driver when the transformer is connected to mains
Hi!
ReplyDeleteCan you tell me about power transformer used in this circuit? For 12 volts battery, how must be the transformer (Primary and secondary)?
Thanks so much!
The secondary must 6V (0-6v) whiles the primary must be a ratio of your secondary turns which can give 220v or 110v depending on where you are.
DeleteSir but in the above diagram u have mentioned, to use transformer accoring to the battery , but now u r saying to use (6-0) v why?
ReplyDeleteThat was a mistake...In pure sinewave systems, you have to use transformers which are half of your battery voltage.
DeleteExample: 48v (24V to 26V transformer)
24V (use 12V to 14V transformer)
12v (use 6V to 7v transformer)
Sir what is u7 is this non polarised capacitors
DeleteYes U7 has no polarity
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ReplyDeletegroup? There's a lot of folks that I think would really enjoy your content.
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Nice brother please more on egs002 projects thanks
ReplyDeleteHi
ReplyDeletedoes anyone knows a version of this board with a variable frequency (as the ED8010 allows)?
Can I use 370 VDC as long as I take care of EGS002 5 volt supply, Fan 12 volt supply and FET voltage/current?
ReplyDeleteYes you can. But in that case you have to use high frequency inverter topology and use an LC filter to block the high frequency harmonics to get only 50Hz at the output.
Deletehi! your project is amazing! can I ask you something? if I use an 12v battery, the transformer that I have to use is 6v/220V??
ReplyDeleteYes. The transformer should be 6V maximum 6.5V
DeleteI need your help
ReplyDeleteI have been having issue with the card...
D last time I tried to use it for 2kva 24v inverter the high side of the mosfet blew up after powering it with 130 watt freezer
Hi can I use 48vdc battery as long I step it down to 12v to board requirement
ReplyDeleteYes, you can use 48V or even up to 400V DC. But you have to supply the card with 5V and 12V
DeleteWow, I finally get what I have been looking for for years. I'm very grateful.
ReplyDeletecan i use multiple egs002 inverter circuit and instead of using a stepup transformer , i do series connection of multiple same circuit to get HV AC output?
ReplyDeleteNo please. You can rather use high frequency inverter topology to achieve what you are talking about.
DeleteIn high frequency inverter systems,
1. You boost your input dc voltage to high dc voltage (320V-400V dc).
2. You can use SG3525N for the boost converter stage.
3. Use the egs002 card at the second stage to convert the 320V - 400V high voltage DC to 220V AC.
Is it possible to use a big transformer for the circuit
ReplyDeleteI have victron inverter 24v 5000w with two different transformer but the driver board is faulty Can I use egs002 to convert convert
ReplyDeleteYes you can. But you will have to do alot of work before it can become successful.
Delete1. You must get 12V and 5V from the power supply board in the Victron. The power supply board is at the front part located after the two cooling fans.
2. You must match the bridge drive signals from the EGS to the low, float and high h bridge circuit/ boards in the victron.
The victron has two mosfet bridge boards connected in parallel but shares the same heat sinks.
3. Provide feedback from the output of the transformer (the two are connected in parallel) to the EGS.
4. Provide the NTC for temperature sensing.
5. Received current feed back from the victron current sensor. Add a resistor across the output of the CT if the voltage Received is very high.
If you can do all these....then success is high.
Hello,
ReplyDeleteVery nice article. So i built the circuit, used a 6.5V UPS transformer but the issue is that with load of more than 100w, voltage drops from 220v to 184v. Any idea where to look at ? thanks.
Hello i assembled the egs002 PCB bought from Ali express but when i turn it on the voltages climbs up to 135vac out and egs002 shuts off and the led blinks 2 time that shows it's over current ( which is definitely not the case please help me what to do iam confused 🥺
ReplyDelete