Constant current fast charging of electric vehicles via dc grid using dual inverter drive
AssigneesThe Governing Council of the University of Toronto, Eleappower Ltd.
InventorsPeter Waldemar LEHN, Ruoyun SHI, Theodore SOONG
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Abstract
A DC charging circuit includes a first inverter module corresponding to a first battery; a second inverter module corresponding to second battery; and DC terminals tapping off a high-side of the first inverter module and a low-side of the second inverter module. A front-end switching circuit is also described. The front-end switching circuit controls charging input from a DC source to at least one inverter circuit, each inverter circuit corresponding to at least one respective battery. The front-end switching circuit is an add-on for interfacing to high voltage DC inputs.
Claims20
A front-end switching circuit 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 front-end switching circuit comprising:
- at least one switching device which when positioned in series with the at least one inverter circuit and the DC source, the at least one switching device is configured to control the charging input provided to the at least one respective battery, the at least one switching device controllable in conjunction with switches in the at least one inverter circuit based on at least one voltage of the at least one respective battery.
A method for controlling charging input from a DC power source to at least one inverter circuit, using a front-end switching circuit, each inverter circuit corresponding to at least one respective battery, the method comprising:
- controlling, using at least one switching device of the front-end switching circuit, which when positioned in series with the at least one inverter circuit and the DC source, the charging input provided to the at least one respective battery, the at least one switching device controllable in conjunction with switches in the at least one inverter circuit based on at least one voltage of the at least one respective battery.
A non-transitory machine readable medium, storing machine interpretable instructions, which when executed by a processor, causes the processor to perform a method for controlling charging input from a DC power source to at least one inverter circuit, using a front-end switching circuit, each inverter circuit corresponding to at least one respective battery, the method comprising:
- controlling, using at least one switching device of the front-end switching circuit, which when positioned in series with the at least one inverter circuit and the DC source, the charging input provided to the at least one respective battery, the at least one switching device controllable in conjunction with switches in the at least one inverter circuit based on at least one voltage of the at least one respective battery.
Dependencies are inferred from the claim text.