By improving the realization method of inverter, a realization scheme of SPWM (Sinusoidal Pulse Width Modulation) controller based on Field Programmable Gate Array (FPGA) is proposed. The design of the controller is mainly composed of a waveform generator and a SPWM generator. It has the function of frequency modulation and amplitude modulation. The dead time can be set according to the hardware environment, and it has the characteristics of closed-loop adjustment. The modular design method makes the whole control system simpler and more reliable. The function and timing simulation of the designed controller is carried out, and the simulation results verify the correctness and feasibility of the design.
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