基于DSP与CPLD的400Hz中频电源设计

Design of 400 Hz Mid-Frequency Power Supply Based on DSP and CPLD

利用DSP产生SPWM波,驱动IGBT逆变,从而产生纯正弦交流电进行400 Hz中频电源的研究与设计.给出了以DSP为主控芯片的主电路、控制电路以及软件设计的流程.实验结果表明:利用DSP与CPLD使得控制电路大为简化,改善了功率因数,减少了谐波影响,从而提高了工作效率.

The paper proposes a new way to obtain pure sinusoidal based on DSP for the research and design of 400 Hz AC power supply.It gives the main circuit,control circuit and software design flow chart.A prototype is designed using the DSP as the master chip.The experimental result shows that this way not only can simplify the system structure by DSP and CPLD,but also can improve the power factor,reduce harmonics and enhance efficiency.