An onboard charger for both single-phase (level-1 and level-2, up to 19.2 kW) and three-phase (level-3, above 20 kW) charging of battery in plug-in electric vehicles (PEVs). The charger is integrated with the propulsion machine-inverter group residing in the PEV, and is controlled to operate in propulsion and battery charging modes. The subject integrated onboard charger provides battery charging at the rated power of the propulsion machine, does not need motor/inverter rearrangement, does not require additional bulk add-on passive components, provides an effective input current ripple cancellation, and operates without rotation of the propulsion machine during the steady state charging.
U.S. Patent and Trademark Office DescriptionPTO
Inventor(s) Alireza Khaligh
, Yichao Tang, Chuan Shi