All of these limit the further development of the inverter power supply. However, the commutation circuit is complicated, the noise is large, the volume is large, and the efficiency is low. Although the appearance of the thyristor inverter can replace the rotary converter unit, since the SCR is a device without self-shutdown capability, it is necessary to increase the commutation circuit to forcibly turn off the SCR.

The first generation of inverter power supply is a switching device using a thyristor (SCR) as an inverter and it is called a thyristor inverter. So far, it has experienced three stages of development. Inverter power supply appeared in the 1960s, where power electronics technology developed rapidly.

The development of devices drives the development of inverter power supplies. The development of the inverter power supply is related to the development of power electronic devices. Inverter power supplies are widely used in aviation, navigation, electric power, railway transportation, post and telecommunications and many other fields. It is one of the hotspots in the power electronics industry and scientific research. It spans multiple fields such as power, electronics, microprocessor and automatic control. Inverter power supply technology is a comprehensive professional technology. It obtains a constant-frequency AC output from an AC or DC input. The inverter power supply is a device that uses power electronics technology to convert power. Ⅰ Overview 1.1 Development B ackground of I nverter P ower S upply Ⅱ The Principle and Application of SPWM Inverter Power SupplyĢ.2 Development Prospects of SPWM Controlģ.4 The Analysis of the Working Principle of the Inverter CircuitĤ.1 Debugging of the Part of the Sine GeneratorĤ.2 Inverter Part and Overall Operation Result Through debugging and analysis, the correctness of the design is verified.ġ.1 Development Background of Inverter Power Supplyġ.2 Research Status of Inverter Power Supply This design takes the SG3525 driver chip as the core, completes the parameter design of single-phase sine wave SPWM inverter power supply, and uses the obtained results to complete the connection of the actual circuit. The output frequency is controlled by voltage and the amplitude of the waveform is determined by the resistance. Through the analysis of the circuit, the determination of the parameters selects the most suitable solution. The inverter power supply is a device that uses power electronics to convert power.

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