Supervisory controllers for monitoring fault events

A method, comprising:

• monitoring, by a supervisory circuit:
• a first circuit configured to provide a first function including providing a first voltage to an inverter for an electric motor, and
• a second circuit configured to provide a second function including distributing a second voltage to the first circuit, the second voltage less than the first voltage;
• obtaining, by the supervisory circuit, a state of one of the first circuit or the second circuit;
• and
• in response to determining, based on the state, a fault to the first circuit or the second circuit:
• determining, by the supervisory circuit and based on the fault, a fault action, and
• controlling, by the supervisory circuit, the first function in accordance with the fault action.

A vehicle, comprising:

• an electric motor;
• an energy storage system configured to provide a first voltage;
• a battery separate from the energy storage system and configured to provide a second voltage less than the first voltage;
• an inverter comprising one or more switches configured to operate the electric motor;
• and
• an electronic control unit configured to provide one or more control signals to the inverter, the electronic control unit comprising:
• a first circuit configured to control one or more functions of an inverter for an electric motor configured to operate based on the first voltage;
• a second circuit configured to distribute power, based on the second voltage, to the first circuit;
• and
• a third circuit configured to:
• determine, based on communication with at least one of the first circuit or the second circuit, a state of the first circuit, and
• in response to the state indicating a fault to the first circuit, determine a fault action to manage the electric motor.