Patent ID: 11970067
Assignee: THE GOVERNING COUNCIL OF THE UNIVERSITY OF TORONTO
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC B  H  Y | IPC B  H

Claim 18:
19. A method for controlling charging input from a DC power source to at least one inverter circuit, each inverter circuit corresponding to at least one respective battery, the method comprising:
controlling at least one switching device, positioned in series with the at least one inverter circuit and the DC power source, in conjunction with switches in the at least one inverter circuit based on at least one voltage of the at least one respective battery;
wherein the at least one switching device is positioned to control a charging input from the DC source to a first inverter circuit corresponding to a first battery and a second inverter circuit corresponding to a second battery, the method comprising:
when a sum of the voltages of the first battery and the second battery are less than or equal to an input voltage of the DC power source, controlling the at least one switching device to operate in a first mode that inserts both the first battery and the second battery into a circuit conduction path by either modulating the at least one switching device or modulating the switches of the first inverter circuit and the second inverter circuit; and
when a sum of the voltages of the first battery and the second battery are greater than the input voltage of the DC power source, controlling the switching device to operate in a second mode switching on the at least one switching device and modulating the switches of the first inverter circuit and the second inverter circuit.