Patent ID: 9203322
Filing Date: 2015-12-01
Classification: H02M,Y02B

Abstract:
1. A power correction method of correcting transmitted power, which is transmitted between a primary side circuit and a secondary side circuit which is connected to the primary side circuit via a reactor and magnetically coupled with the primary side circuit via a transformer, and is adjusted in accordance with a phase difference between switching of the primary side circuit and switching of the secondary side circuit, comprising: switching by turning on a first transistor and a second transistor which are connected to a negative electrode bus line of the primary side circuit; applying a predetermined voltage between a positive electrode bus line and a negative electrode bus line of the secondary side circuit; switching by turning on a third transistor which is connected to the positive electrode bus line of the secondary side circuit and a fourth transistor which is connected to the third transistor via the reactor and is connected to the negative electrode bus line of the secondary side circuit; measuring delay time since turning on the third transistor and the fourth transistor until current starts flowing in the first transistor and the second transistor; measuring a slope of the current flowing in the first transistor and the second transistor; and correcting the transmitted power in accordance with a measured value of the slope and a measured value of the delay time.