Easy-to-assemble structure of power converter

摘要

An easy-to-assemble structure of a power converter includes a control circuit board, semiconductor modules with power terminals and control terminals extending therefrom, and a capacitor to smooth voltage to be applied to the semiconductor modules. The capacitor includes capacitor devices coupled to the power terminals and voltage measuring terminals joined to electrodes of the capacitor devices. The control terminals and the voltage measuring terminals extend in a direction normal to the surface of the control circuit board. This permits the connections of the voltage measuring terminals and the control terminals with the control circuit board to be achieved simultaneously by bringing them close to the control circuit board from the normal direction.

主权项

1. A power converter comprising:
a control circuit board; a plurality of semiconductor modules each of which includes a main unit in which semiconductor devices are fabricated, the main unit having power terminals and control terminals extending therefrom; a capacitor working to smooth voltage to be applied to the semiconductor modules, the capacitor including capacitor devices coupled to the power terminals and voltage measuring terminals coupled to electrodes of the capacitor devices; a control circuit disposed on the control circuit board to control switching operations of the semiconductor modules; and a voltage detector disposed on the control circuit board to measure voltages applied to the capacitor devices, wherein the control terminals extend in a direction normal to a surface of the control circuit board in connection with the control circuit, and wherein the voltage measuring terminals extend in a direction normal to the surface of the control circuit board in connection with the voltage detector.