ELECTRIC POWER CONVERTER

摘要

An electric power converter includes a capacitor, a bridge circuit that includes a plurality of switching elements, a transformer, a secondary side rectifier circuit, a smoothing circuit, a detector that detects a value based on at least one of a capacitor voltage and a current flowing from the capacitor, and a control device that outputs a primary side drive signal to turns on/off each of the plurality of switching elements at a switching frequency, the control device increasing the switching frequency when the detected value increases, the control device reducing the switching frequency when the detected value decreases.

主权项

1. An electric power converter, comprising:
a capacitor that smooths a first rectified voltage to generate a capacitor voltage; a bridge circuit that converts the capacitor voltage to a primary side AC voltage, the bridge circuit including a plurality of switching elements; a transformer that converts the primary side AC voltage to a secondary side AC voltage, the transformer including a primary winding connected to the bridge circuit and a secondary winding electromagnetically coupled to the primary winding; a secondary side rectifier circuit that rectifies the secondary side AC voltage to generate a second rectified voltage, the secondary side rectifier circuit being connected to the secondary winding; a smoothing circuit that smooths the second rectified voltage; a detector that detects a value based on at least one of the capacitor voltage and a current flowing from the capacitor; and a control device that outputs a primary side drive signal to turns on/off each of the plurality of switching elements at a switching frequency, the control device increasing the switching frequency when the detected value increases, the control device reducing the switching frequency when the detected value decreases.