| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a multiple inverter device equipped with a regenerating function which enables the unbalance adjustment of DC voltage. <P>SOLUTION: A self arc-extinguishing semiconductor switching element is connected in reverse parallel with the diode of a normal converter constituting each single phase of inverter unit so as to constitute a 120° circulation converter, and this inverter device generates a 120° circulation width signal synchronized with input voltage thereby controlling each self arc-extinguishing semiconductor switching element of each phase inverter unit. Moreover, this detects the current on the side of AC input of a converter and sends it out to a PWM controller thereby controlling the DC voltage of each single phase of inverter unit via the PWM controller. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
