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介绍了以C8051F系列单片机产生SPWM算法为基础制作的数字化AC／DC／AC单相变频电源,该电源将公网三相交流电转化为输出电压幅值和频率可独立调节的单相交流电。实验结果表明该电源输出电压波形较理想,实现的调压、调频精度高,反馈灵敏迅速,保护措施齐全有效。
A digital AC / DC / AC single-phase variable frequency power supply based on the C8051F series MCU generating SPWM algorithm is introduced. The power supply converts the public three-phase AC power into a single-phase AC voltage whose output voltage amplitude and frequency can be adjusted independently. The experimental results show that the output voltage waveform of the power supply is more ideal, and the voltage regulation, FM precision and feedback sensitivity are fast and the protection measures are complete and effective.