Development of photovoltaic grid power generation simulation device

With the process of international industrialization, global future energy consumption is expected to grow at a rate of 3%, and conventional energy is facing increasingly exhausted dilemmas. People have started the development of renewable energy and new energy technology, and the most developed power generation and solar power generation, that is, photovoltaic grid power generation. 1 overall plan design The design uses the ATMEGA16 single-chip microcomputer as the main control circuit. The working process is: after the frequency of the reference signal, after the SPWM modulation, the same phase sine wave is modulated, the sinusoidal pulse width modulation signal is output, and the driving power is driven, and the H bridge power tube is driven. The filter and the power frequency transformer are generated in the reference signal pass frequency, the same phase of the sine wave current. Among them, overcurrent, undervoltage protection is accomplished by the ATMEGA16 by hardware implementation, synchronous signal acquisition, frequency acquisition, control signal output. The overall design block diagram of the system is shown in Figure 1. Be Be 2 hardware circuit design Divided into DC / AC drive circuit, DC / AC circuit, and filter circuit 3 and smooth capacitance C1, the circuit principle is shown in Figure 2. Technology area Available active load available for high voltage testing I understand power electronic device and its characteristics Development trend of power electronics Super capacitance unit pressure strategy based on multiple SEPIC chopper circuitry Use virtual protothech tutorial during the design of the power generation system

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