| 电压型三相H桥逆变器直流支撑电容容值优化 |
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| 引用本文： | 刘成浩,赵红林,谢佩韦. 电压型三相H桥逆变器直流支撑电容容值优化[J]. 船电技术, 2021, 41(1): 6-10. DOI: 10.3969/j.issn.1003-4862.2021.01.002 |
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| 作者姓名： | 刘成浩 赵红林 谢佩韦 |
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| 作者单位： | 武汉船用电力推进装置研究所,武汉 430064;武汉船用电力推进装置研究所,武汉 430064;武汉船用电力推进装置研究所,武汉 430064 |
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| 摘 要： | 直流支撑电容是电压型逆变器的重要组成部分,其选型直接影响到逆变器的电气性能以及整机功率密度.针对三相H桥逆变器,提出了一种通过相间载波移相减小支撑电容谐波电流的方法.采用开关函数法和双重傅里叶级数分析了逆变器支撑电容电流的主要谐波成分,给出了优化电容容值的计算方法.通过仿真对比相间载波移相前后,保持直流母线波动幅值一致...
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| 关 键 词： | 支撑电容 三相H桥 SPWM调制 相间载波移相 |
DC-Link Capacitor Value Optimization of Three-phase H-bridge Voltage Source Inverter |
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| Liu Chenghao,Zhao Honglin,Xie Peiwei. DC-Link Capacitor Value Optimization of Three-phase H-bridge Voltage Source Inverter[J]. Marine Electric & Electronic Technology, 2021, 41(1): 6-10. DOI: 10.3969/j.issn.1003-4862.2021.01.002 |
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| Authors: | Liu Chenghao Zhao Honglin Xie Peiwei |
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| Affiliation: | (Wuhan Marine Electric Propulsion Institute,Wuhan430064,China) |
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| Abstract: | The DC-link capacitor is an important component of voltage source inverter,and its selection directly affects the electrical performance and the power density of the inverter.A method to reduce the harmonic current of DC-link capacitance by phase to phase carrier shift is proposed for the three-phase H-bridge inverter.The main harmonic components of the DC-link capacitive current of the inverter are analyzed by the method of switching function and double Fourier series.The DC-link capacitance values between before and after phase shifting of the carriers,under the conditions of keeping the fluctuation amplitude of the dc bus line same,are analyzed and compared through the MATLAB simulation.It is concluded that the DC-link capacitance value can be greatly reduced by the optimization method. |
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| Keywords: | DC-link capacitor optimization three-phase H-bridge SPWM modulation phase to phase carrier shift |
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