Controller and drive circuits for electric motors

A non-transitory computer-readable storage medium with instructions stored thereon that, in response to execution by at least one processor, cause the at least one processor to:

• cause at least two switches of an inverter to be disabled while a drive circuit supplies variable frequency current to an electric motor, wherein the drive circuit comprises the inverter and a contactor, and wherein the at least two switches are disabled to prevent a line short circuit based at least in part on the at least two switches and the contactor;
• and
• cause the contactor to close while the at least two switches are disabled.

A method of operating a motor implemented by at least one processor in communication with at least one memory, the method comprising:

• causing at least two switches of an inverter to be disabled while a drive circuit supplies variable frequency current, wherein the drive circuit comprises the inverter and a contactor, and wherein the at least two switches are disabled to prevent a line short circuit based at least in part on the at least two switches and the contactor;
• and
• causing the contactor to close while the at least two switches are disabled.