Inverter control circuit

Inverter control circuit


General inverter main circuit control circuit are needed to achieve, mainly two kinds of square and sine wave control mode. Square-wave output of the inverter power circuit is simple, low cost, but low efficiency, large harmonic components. With the development of microelectronics technology, the development trend of inverter is sine wave output, a PWM function of the microprocessor has also come out, so the output sine wave inverter technology has matured.

1. Square-wave output inverter current multi-pulse-width modulation integrated circuit. Practice has proved that, using SG3525 IC, and using power MOSFET as a switching power components, to achieve high cost performance inverter, due to SG3525 has a direct drive power MOSFET capacity and an internal reference source and operational amplifier and undervoltage protection, so the external circuit is very simple.

2. Sine wave output inverter control IC, sine wave output inverter, the control circuit can use microprocessor-controlled, such as INTEL produced 80C196MC, Motorola produced MP16, as well as MI-CROCHIP produced PIC16C73, etc. These microcontrollers also have a multi-channel PWM generator, and can be set up on the arm on the bridge between the dead-time, using INTEL's 80C196MC sine wave output of the circuit to achieve, 80C196MC complete sine wave signals occur, and to detect AC output voltage to achieve regulation.

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