| SVPWM方法在磁轴承开关功放中的设计及应用 |
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| 引用本文： | 韩辅君,房建成,刘刚.SVPWM方法在磁轴承开关功放中的设计及应用[J].电工技术学报,2009,24(5). |
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| 作者姓名： | 韩辅君 房建成 刘刚 |
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| 作者单位： | 北京航空航天大学仪器科学与光电工程学院,北京,100083;新型惯性仪表与导航系统技术国防重点学科实验室,北京,100083 |
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| 基金项目： | 国防科工委民用航天预研项目 |
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| 摘 要： | 永磁偏置磁轴承需要磁轴承线圈流过双极性电流,因而开关功放多采用全桥结构,而金桥结构的开关功放功率管数量多,导致其功耗大和可靠性低等.本文采用新型三桥臂开关功放主电路拓扑结构,通过DSP和FPGA的数字系统实现了空间矢量PWM(SVPWM)的调制方法.实验结果表明,这种方法相对于全桥结构两电平调制方法具有低纹波电流的优点,可以大大降低磁轴承的涡流损耗,相对于全桥结构三电平的开关功放具有减少了功放管数量和减小了功放体积的优点,可以进一步降低开关损耗,同时功放管数量的减少可增加系统的可靠性.
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| 关 键 词： | 磁轴承 开关功放 数字实现 |
Design and Implementation of SVPWM Switching Power Amplifiers for Active Magnetic Bearing |
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| Han Fujun,Fang Jiancheng,Liu Gang.Design and Implementation of SVPWM Switching Power Amplifiers for Active Magnetic Bearing[J].Transactions of China Electrotechnical Society,2009,24(5). |
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| Authors: | Han Fujun Fang Jiancheng Liu Gang |
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| Affiliation: | 1.Beijing University of Aeronautics and Astronautics Beijing 100083 China 2.Key Laboratory of Fundmental Science for National Defense of Novel Inertial Instrument and Navigation System Technology Beijing 100083 China |
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| Abstract: | The magnetic bearing biased by permanent magnetic body needs bipolar current,so the full-bridge structure is often used in its switching power amplifier.The conventional full-bridge power amplifier has many power-tubes in magnetic bearing system,and this will leads more power-loss and less reliability.In this paper,a 3-leg switching power amplifier circuit is adopted to realize the SVPWM modulator approach using the digital system which includes DSP and FPGA.The test results indicate that this method can re... |
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| Keywords: | SVPWM |
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