HYBRID POWER CONVERSION SYSTEM AND METHOD OF DETERMINING EFFICIENCY USING THE SAME

摘要

A hybrid power conversion system includes an inverter, a switching controller, and an efficiency measurer. The inverter is connected in series to a first converter and a second converter, and the first and second converters are respectively connected to first and second direct current power supplies. The switching controller controls switching frequencies of one or more switches in the first and second converters and the inverter. The efficiency measurer measures efficiency based on the switching frequencies. The switching controller determines the switching frequencies of the one or more switches as frequencies at which the system has a predetermined efficiency based on the efficiency measured by the efficiency measurer.

主权项

1. A hybrid power conversion system, comprising:
a first direct current (DC) power supply; a first converter connected to the first DC power supply; a second DC power supply connected in parallel to the first DC power supply; a second converter connected to the second DC power supply; an inverter connected in series to each of the first converter and the second converter; a switching controller to control switching frequencies of one or more switches in the first and second converters and the inverter; and an efficiency measurer to measure efficiency based on the switching frequencies, wherein the switching controller is to determine the switching frequencies of the one or more switches as frequencies at which the system has maximum efficiency based on the efficiency measured by the efficiency measurer.