| 摘要 |
<p>PROBLEM TO BE SOLVED: To solve such a problem that simultaneous control of the phase voltage and the capacitor voltage is performed with high degree of difficulty, when obtaining the outputs of a large number of voltage types by using an AC/AC converter.SOLUTION: Bidirectional switch cells are connected, respectively, with the terminals R', S', T' of a three-phase AC power supply. Each bidirectional switch cell includes a series circuit of two sets of bidirectional switch provided, respectively, in parallel with the terminals R', S', T', and a capacitor connected with the joint of respective series circuit and the terminals R', S', T'. Simultaneous control of the phase voltage and the capacitor voltage is simplified by connecting the bidirectional switch terminals on the output side constituting respective bidirectional switch cells separately and collectively, and configuring to output the voltages of U, V, W.</p> |
