引用本文: | 张 亮,陈国栋,蔡 旭.新型高压变频器设计[J].电力自动化设备,2011,31(4): |
| ZHANG Liang,CHEN Guodong,CAI Xu.Novel high voltage converter[J].Electric Power Automation Equipment,2011,31(4): |
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摘要: |
开发了一款可能量反馈的级联型高压变频器,其电网侧变换器摒弃了传统的二极管不可控整流器,而采用三相PWM整流器为电机侧级联型逆变器各H桥单元提供独立的直流电源,使得在不引入多脉波整流技术的情况下,就能够实现单位功率因数的整流和逆变,且网侧电流呈正弦,谐波含量小。为验证该结构变频器适合应用于高压大功率交流变频调速领域,以高压异步电动机为典型负载,采用基于转子磁链定向的矢量控制策略,对异步电动机的启动和突加负载特性进行了研究,并在Matlab/Simulink 下进行了仿真实验,实验结果证明了设计的有效性。 |
关键词: 级联型 高压变频器 能量反馈 矢量控制 |
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基金项目:2008年度上海市重大技术装备研制专项(ZX08030);上海市科委“科技创新行动计划”(08DZ1200504,09DZ1201303) |
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Novel high voltage converter |
ZHANG Liang1, CHEN Guodong1,2, CAI Xu1
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1.Wind Power Research Center,Shanghai Jiao Tong University,Shanghai 200240,China;2.Shanghai Electric Power Transmission Company,Shanghai 200240,China
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Abstract: |
An energy-regenerative cascaded high voltage converter is designed. The three-phase PWM rectifier is used in grid converter,instead of the traditional diode uncontrollable rectifier,to supply isolated DC for each H-bridge of the cascaded inverter at motor side,which makes its rectifier and inverter both operating with unity power factor and the grid-side current totally sinusoidal with few harmonics,though the multi-pulse rectifier technique is not applied. The startup and load sudden increase of high voltage asynchronous induction motor under rotor flux oriented vector control is simulated on Matlab/Simulink platform and results show the designed converter is suitable for HV AC speed adjustment system. |
Key words: cascade-type high voltage converter energy regeneration vector control |