| 对称PWM减小H半桥型开关功放电流纹波的新方法 |
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| 引用本文： | 翟小飞,刘德志,欧阳斌,魏克银,晏明. 对称PWM减小H半桥型开关功放电流纹波的新方法[J]. 电力自动化设备, 2011, 31(2): 58-61,67 |
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| 作者姓名： | 翟小飞 刘德志 欧阳斌 魏克银 晏明 |
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| 作者单位： | 海军工程大学舰船综合电力技术国防科技重点实验室; |
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| 基金项目： | 国家自然科学基金资助项目(51077131)~~ |
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| 摘 要： | 针对H半桥两电平开关功率放大器输出电流纹波较大导致负载损耗增加的缺点,提出采用2路中心对称但占空比不同的PWM实现三电平工作方式的新方法,称为对称PWM法.该方法采用一路PWM占空比固定,另一路PWM占空比受控可变的原理实现了三电平工作方式.给出了输出电流纹波计算公式,利用Matlab对开关功率放大器进行了仿真,构建了...
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| 关 键 词： | 对称PWM 三电平功率放大器 电流纹波 H半桥电路 DSP |
Current ripple reduction with symmetrical PWM forH-half bridge switching power amplifier |
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| ZHAI Xiaofei,LIU Dezhi,OUYANG Bin,WEI Keyin and YAN Ming. Current ripple reduction with symmetrical PWM forH-half bridge switching power amplifier[J]. Electric Power Automation Equipment, 2011, 31(2): 58-61,67 |
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| Authors: | ZHAI Xiaofei LIU Dezhi OUYANG Bin WEI Keyin YAN Ming |
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| Affiliation: | ZHAI Xiaofei,LIU Dezhi,OUYANG Bin,WEI Keyin,YAN Ming(National Key Laboratory for Vessel Integrated Power System Technology,Naval University of Engineering,Wuhan 430033,China) |
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| Abstract: | As the two-level H-half bridge switching power amplifier has significant current ripple,resulting in heavier load loss,a three-level H-half bridge switching power amplifier with two symmetrical PWM signals is proposed,one of which has fixed duty ratio and the other verified.The analytical computation of current ripple is presented and the numerical simulation is carried out with Matlab.An experimental switching power amplifier controlled by DSP is constructed and the comparative test is performed between tw... |
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| Keywords: | symmetrical PWM three-level power amplifier current ripple H-half bridge circuit DSP |
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