Transformer precharge coordination in home energy systems

An apparatus comprising:

• a home energy management system, configured to be electrically coupled to electric vehicle supply equipment (EVSE), including a transformer configured to establish a local neutral reference, a current-limiting circuit electrically coupled to the transformer, a precharge switch operable to route current through the current-limiting circuit, a bypass switch configured to selectively couple power received from the EVSE to the transformer in parallel with the current-limiting circuit, and control logic configured to, with the bypass switch open, actuate the precharge switch to deliver current through the current-limiting circuit.

A method of operating an energy system, comprising:

• with a transformer electrically coupled to a power source via a current-limiting circuit and a precharge switch, actuating the precharge switch to initiate current delivery to the transformer through the current-limiting circuit;
• and
• after actuating the precharge switch, deactivating the precharge switch and activating a bypass switch arranged in parallel with the current-limiting circuit to couple the transformer to the power source.