| 摘要 |
PROBLEM TO BE SOLVED: To reduce current ripple generated by superimposing carrier signal components of AC output in the same phase outputted from multiplexed PWM inverters. SOLUTION: A multi-coupled inverter multiplexes the PWM inverters of two systems which are controlled by a PWM signal generated based on a wave command and a carrier signal of a demand output and mutually superimposes the AC output of the respective PWM inverters. The AC outputs of the respective PWM inverters are made to be in mutually opposite phases, and the carrier signal component are made to be in the same phases. In connecting the respective PWM inverters in parallel, the positive electrode of the PWM inverter on one side and the negative electrode of the PWM inverter on the other side are connected so as to be one side of the output terminal, and the negative electrode of the PWM inverter on one side and the positive electrode of the PWM inverter on the other side are connected so as to be the other side of the output terminal. In the case of serial connection, the negative electrodes of the respective PWM inverters are connected to each other, and the respective positive electrodes are made to be the output terminals. |
