This 1000W inverter is designed based on SPWM special chip, its rated output power is 1000 watts, the maximum output power is 1200 watts, the output voltage is 220V±2% (or 110V), and the output frequency is 50Hz±0.1 Hz, the rated output current is 4.6 amps. This scheme is a DC-DC-AC two-stage power conversion structure, the front stage is an isolated DC-DC boost circuit, and the EGT003 front stage full-bridge quasi-resonant boost drive module is used. DC -DC boost conversion structure, converts the battery DC 24V or 48V to 310V ~ 400V high-voltage DC bus voltage, the rear stage is a DC-AC full-bridge converter, and uses a current-mode SPWM drive module to convert the high-voltage DC bus voltage to The pure sine wave voltage of 220VAC can realize the characteristics of the waveform distortion rate of the empty carrier is less than 1.5%, the waveform distortion rate of the full carrier is less than 3% and the high-precision output voltage, which can meet the waveform requirements of the inverter industry.
Has the following protection features:
1. Inverter protection function:
1. DC bus voltage overvoltage and undervoltage protection;
2. Output overload protection, overcurrent protection, short circuit protection;
3.PCB over temperature protection and IGBT over temperature protection.
2. Serial communication parameters can be set:
1. 50Hz pure sine wave fixed frequency;
2. 60Hz pure sine wave fixed frequency;
3. AC output voltage, temperature protection value, rated power protection value, rated current protection value;
4. Fault reset.
3. Serial communication readable parameters:
1. AC output voltage, AC output current, AC output power.
2. AC output frequency
3. AC output PF value.
4. DC bus voltage;
4. Fault code.
This sine wave inverter board is a solution using EG1611+EG8025 special chips. The chip manufacturer has written all the control software into the chip. The chip is an SOC chip and can be used immediately. It can quickly put the product into the market and is very suitable for Outdoor energy storage power supply, home storage power supply and inverter products.
