The objective of this paper is to present a random switching method which changes switching frequency while retaining constant sampling frequency. The proposed method can effectively reduce magnitude of PWM harmonics. Experimental results derived from an FPGA-based controller are presented for confirmation. The power factor corrector is with 400 W power rating, 90 V/AC/60 Hz input and 385 V/DC output. Experimental results demonstrate the effectiveness of the proposed random switching technique.
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机译：本文的目的是呈现一种随机切换方法，其在保持恒定采样频率的同时改变开关频率。该方法可以有效地降低PWM谐波的大小。介绍了基于FPGA的控制器的实验结果进行了确认。功率因数校正器具有400 W功率额定值，90 V / AC / 60 Hz输入和385 V / DC输出。实验结果表明了所提出的随机切换技术的有效性。
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