速度サーボ系の加速トルクと電圧飽和を考慮したＰＷＭインバータの混合変調方式

DOI Web Site Web Site BIBCODE 被引用文献4件 参考文献22件

書誌事項

タイトル別名
  • Mixed Modulation Method of PWM Inverter by Considering Acceleration Torque and Voltage Saturation for Speed Servo System
  • ソクド サーボケイ ノ カソク トルク ト デンアツ ホウワ オ コウリョ シタ PWM インバータ ノ コンゴウ ヘンチョウ ホウシキ

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抄録

The speed servo system of an AC motor should always have a rapid and smooth response without current ripple. For this purpose, this paper proposes a new mixed modulation method of the PWM inverter by considering acceleration torque and voltage saturation. The rapid and robust speed servo system often has the high gain speed controller and the high gain current controller. In this case, this speed servo system often has the voltage saturation in the transient state. This paper discusses the amplitude and THD of output voltage on the condition of voltage saturation for each voltage modulation method of three phase inverter such as the carrier comparison inverter using the two phase modulation (2ph. M) and the space voltage vector modulation (SVM) inverter. The carrier comparison inverter using the 2ph. M has the large voltage with large harmonic current. The SVM inverter has the smooth voltage response with small harmonic current. The proposed method switches over the SVM and the 2ph. M methods properly by considering acceleration torque and voltage saturation. The experimental results confirm the effectiveness of the proposed mixed modulation method of the PWM inverter.

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