POWER CONVERTER INCLUDING SMOOTHING CAPACITOR AND DISCHARGE RESISTOR

摘要

A power converter includes a body including a switching element; a plurality of semiconductor modules each having a control terminal projected from the body; a circuit board controlling the switching element; a cooler that cools the semiconductor modules; a smoothing capacitor smoothing direct-current voltage applied to the switching element; a discharge resistor disposed on a surface of the circuit board and electrically connected parallel to the smoothing capacitor. The semiconductor modules are mounted on the circuit board with the control terminal, the discharge resistor includes a first connecting portion at one end of the discharge resistor in a longitudinal direction thereof and a second connecting portion at an other end of the discharge resistor in the longitudinal direction, and the first connecting portion is connected to the control terminal via a wiring pattern provided on the surface of the circuit board.

主权项

1. A power converter that converts a direct-current voltage received by the power converter to an alternating-current voltage, comprising:
a body including a switching element; a plurality of semiconductor modules each having a control terminal projected from the body; a circuit board that controls the switching element to be ON and OFF; a cooler that cools the semiconductor modules; a smoothing capacitor that smooth direct-current voltage applied to the switching element; a discharge resistor disposed on a surface of the circuit board and electrically connected parallel to the smoothing capacitor,wherein
the semiconductor modules are mounted on the circuit board with the control terminal; the discharge resistor includes a first connecting portion at one end of the discharge resistor in a longitudinal direction thereof and a second connecting portion at an other end of the discharge resistor in the longitudinal direction thereof; and the first connecting portion is connected to the control terminal via a wiring pattern provided on the surface of the circuit board.