SYSTEM AND METHOD FOR CONTROLLING OUTPUT POWER IN A CONTACTLESS POWER TRANSFER SYSTEM

摘要

A power conversion system including a power source configured to provide input power is disclosed. The power conversion system also includes a first power converter comprising switches configured to convert the input power to an intermediate converted power. The power conversion system further includes a controller configured to control the switches based on an asymmetrical voltage cancellation mode wherein the controller is configured to operate the first power converter at a fixed operating frequency, maintain a zero voltage switching mode and control a duty cycle of the switches. The power conversion system also includes a contactless power transfer system configured to transmit the intermediate converted power to a load wherein the load is coupled to a second power converter that converts the intermediate converted power to an output power wherein an output voltage of the output power is controlled by the controller based on the asymmetrical voltage cancellation mode.

主权项

1. A power conversion system comprising:
a power source configured to provide input power; a first power converter comprising switches configured to convert the input power to an intermediate converted power; a controller configured to control the switches of the first power converter based on an asymmetrical voltage cancellation mode wherein the controller is configured to:
operate the first power converter at a fixed operating frequency;maintain a zero voltage switching mode; andcontrol a duty cycle of the switches of the first power converter; and a contactless power transfer system configured to transmit the intermediate converted power to a load; and a second power converter coupled to the load and configured to convert the intermediate converted power to an output power wherein an output voltage of the output power is controlled by the controller based on the asymmetrical voltage cancellation mode.