A Sinusoidal Voltage Supply Using Current Fed Type PWM Inverter

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  • 電流形PWMインバータを用いた正弦波電圧源
  • デンリュウガタ PWM インバータ オ モチイタ セイゲンハ デンアツ ゲン

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The advantages of current fed type PWM inverter system over voltage fed type PWM inverter system are regenerative capability with a single converter and the realization of sinusoidal voltages and currents by lower switching frequency. This paper proposes a new sinusoidal voltage supply using the current fed type inverter based on the instantaneous voltage vector control. In this system, the output voltages can be obtained directly by the feedback control of the instantaneous vector. So, the proposed inveter system has the simple control circuit, the fast response, and the robustness for disturbance. In addition to these, it is possible that the pure sinusoidal waveforms of load currents are achieved by reducing the ripple of the output voltages under the inductive load. This paper presents the PWM controll method by the feedback control of the output voltage vector. Moreover, the feasibility of proposed voltage supply is confirmed by some simulations and experimental results using a small test system.

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