单开关三相交直流降压变换器随机谐波消除PWM新技术

2006 CES/IEEE 5th International Power Electronics and Motion Control Conference Pub Date : 2006-08-01 DOI:10.1109/IPEMC.2006.4778059

G. Tan, Wenchuan Ma, Yanchao Ji, Hongxiang Yu, Wancai Xu

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引用次数: 1

摘要

针对单开关三相交直流降压变换器，提出了一种新的PWM技术，可以抑制输入电压波动，获得高质量的输出电压，实现开环工作模式。通过控制跟踪输入电压变化的开关的占空比，可以使交流电源供电的能量和负载消耗的能量在每个开关周期内保持不变。从而使输出直流电压保持恒定，消除了输入级包含的随机谐波电压。基于节能原理，分析了系统在断续导通模式(DCM)和连续导通模式(CCM)下的运行情况，详细介绍了控制策略。实验结果表明了该方法的有效性和可行性

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Novel Random-Harmonic Elimination PWM Technique for Single-Switch Three-Phase AC-DC Buck Converter

A novel PWM technique for single-switch three-phase AC-DC buck converter is proposed to reject input voltage fluctuation, obtain high quality output voltage and realize open-loop operation mode. By controlling the duty cycle of the switch which tracks the change of input voltage, the energy supplied by AC mains and the energy consumed in load can keep invariable in every switching cycle. So the output DC voltage maintains at a constant value and random-harmonic voltage contained in input stage is eliminated. Based on the principle of energy conservation, the system operation is analyzed and the control strategy is introduced in detail both in discontinuous conduction mode (DCM) and continuous conduction mode (CCM). Experimental results are provided to show its validity and feasibility

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来源期刊

2006 CES/IEEE 5th International Power Electronics and Motion Control Conference

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