| 电流型控制半桥逆变器研究(I)--直流分压电容不均压问题 |
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| 引用本文： | 陈东华,谢少军.电流型控制半桥逆变器研究(I)--直流分压电容不均压问题[J].电工技术学报,2004,19(4):85-88,51. |
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| 作者姓名： | 陈东华 谢少军 |
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| 作者单位： | 南京航空航天大学自动化学院,南京,210016 |
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| 摘 要： | 电流型控制半桥逆变器直流分压电容电压存在偏差,电容中点的电压偏移容易导致输出电压和电流波形的畸变,使电路性能恶化,甚至使系统失控.文中分析了电流型控制半桥逆变器分压电容不均压产生的原因,给出电容中点电压偏移的理论值,讨论了电容不均压问题对整个逆变器系统造成的影响.仿真和实验结果证实理论分析的正确性.由于该问题的存在,限制了电流型控制半桥逆变器的实用性.
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| 关 键 词： | 逆变器 半桥电路 电流型控制 不均压 |
| 修稿时间： | 2003年6月13日 |
Research on Current-Mode Control Half-Bridge Inverter(I)--Voltage Un-Balance of Input Capacitors |
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| Chen Donghua,Xie Shaojun.Research on Current-Mode Control Half-Bridge Inverter(I)--Voltage Un-Balance of Input Capacitors[J].Transactions of China Electrotechnical Society,2004,19(4):85-88,51. |
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| Authors: | Chen Donghua Xie Shaojun |
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| Affiliation: | Nanjing University of Aeronautics and Astronautics Nanjing 210016 China |
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| Abstract: | Voltage un-balance of input capacitors in the current-mode control half-bridge inverter, which will easily distort the output voltage and current waveform, often worsens the circuit characteristic and even makes the circuit uncontrollable. The cause of voltage un-balance is analyzed in detail and the theoretical value of un-balanced voltage is deduced in this paper. The theoretical analysis result of the voltage un-balance is verified by the simulation and experimental results. Because of the voltage un-balance, the practicality of the current-mode control half-bridge inverter is restricted. |
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| Keywords: | Inverters half-bridge circuit current-mode control voltage un-balance |
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