航空学报 > 1993, Vol. 14 Issue (2): 52-58

SPWM逆变器交流瞬时值反馈控制系统分析

周杏生, 严仰光   

  1. 南京航空学院246信箱,南京 210016
  • 收稿日期:1990-10-31 修回日期:1991-05-30 出版日期:1993-02-25 发布日期:1993-02-25

ANALYSIS OF INSTANTANEOUS FEEDBACK CONTROL SYSTEM FOR SPWM INVERTER

Zhou xing-sheng, Yan Yang-guang   

  1. P.O.Box 246, Nanjing Aeronautical Institute, Nanjing, 210016
  • Received:1990-10-31 Revised:1991-05-30 Online:1993-02-25 Published:1993-02-25

摘要: 针对应用于交直交VSCF飞机电源系统的SPWM逆变器,提出了包含交流电流内环和交流电压外环的双闭环控制系统方案,利用交流瞬时值反馈的波形校正作用使逆变器输出电压波形得以改善。通过对单相1 kVA SPWM逆变器双闭环控制系统的设计分析和实验研究,结果表明:采用交流瞬时值反馈控制的SPWM逆变器具有较好的输出电压波形、动态响应特性和稳态调压精度,对逆变器输入直流电压的变化影响有很好的抑制作用,适合任由永磁无刷直流发电机供电的VSCF电源系统中应用。

关键词: 变速恒频, 逆变器, 闭环控制

Abstract: This paper deals with the closed-loop control method for SPWM inverter used in DC-link VSCF electrical power system. An instantaneous feedback control system is proposed, in which AC current inner loop and AC voltage outer loop are involved. For 1 kVA single phase SPWM inverter, the closed-loop control system is designed and analysed. The result of the experiments shows that the SPWM inverter with instantaneous feedback control has good static and dynamic electrical performance, with little distortion in the output waveform and the output voltage variation due to the variable DC voltage being effectively suppressed. It is suitable to use this closed-loop control method in the system suppliedby a permanent magnet generator.

Key words: VSCF, inverter, closed-loop control