Proposed Inverter DC Bus Voltage Control Method and Capacitance Reduction Method for Mass Motor Drive

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  • 大容量モータドライブのインバータ直流バス電圧制御法とコンデンサ容量低減法の提案

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In this study, a new control method for the power supply of a mass motor is proposed. The reference voltage of the power supply is calculated digitally according to the energy conservation law. Specifically, this method takes into account a servo motor's rotational energy to control the output voltage by inputting an angular velocity to the digital controller. With this method, the voltage ripple of the power supply output is calculated to be reduced by about 40% compared conventional method. This also facilitates the reduction of the output capacitance and peak current and extension of the operating life.

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