| 摘要 |
PURPOSE:To make shared currents of semiconductor elements uniform by making wiring inductances uniform in the case of unbalance in the shared currents of the elements due to a difference of the wiring inductances in many parallel connection circuits of the elements for constituting an output circuit of an inverter. CONSTITUTION:An inverter has power converting switching semiconductor elements 3-12 connected in parallel by conductors with a DC power source 1 and an electrolytic capacitor 2 as inputs. Parallel connecting conductors 17-19 are used to make wiring inductances uniform to make shared currents of the elements 3-12 uniform. Thus, a difference of current loads of the elements is eliminated, many parallel connections can be performed, a capacity of an inverter output circuit using the elements can be easily increased. |
