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在研究了三相不可控整流桥的功率因数及波形校正原理和控制策略的基础上，提出了单开关三相高功率因数／低谐波校正器的两种新的变频率控制方法，即改进的间断时间控制法和改进的等面积控制法。分析了校正器的控制原理，给出了这两种控制方法的数字仿真结果，并对它们的优缺点进行了比较，所获结论对校正器装置的实现具有重要的指导意义。
Based on the study of power factor and waveform correction principle and control strategy of three-phase uncontrollable rectifier bridge, two new control methods of variable frequency of single-switch high-power factor / low-harmonic corrector are proposed The intermittent time control method and the improved equal area control method. The control principle of the corrector is analyzed. The numerical simulation results of the two control methods are given, and their advantages and disadvantages are compared. The conclusions obtained are of important guiding significance for the realization of the corrector device.