Wear-balanced electromagnetic motor control switching

An electrical power switching system, comprising:

• a first switching device configured to selectively connect or disconnect phase A of three-phase electric power from a power source to a load;
• a second switching device configured to selectively connect or disconnect phase B of the three-phase electric power from the power source to the load;
• and
• a third switching device configured to selectively connect or disconnect phase C of the three-phase electric power from the source to the load;
• and
• control circuitry configured to control operation of the first switching device, the second switching device, and the third switching device by:
• instructing the first switching device to open or close before the second switching device and the third switching device during a first switching operation;
• instructing the second switching device to open or close before the first switching device and the third switching device during a second switching operation;
• and
• instructing the third switching device to open or close before the first switching device and the second switching device during a third switching operation.

A tangible, non-transitory computer-readable medium configured to store instructions executable by a processor, wherein the instructions comprise instructions to:

• instruct, using the processor, an electrical power switching system to perform a first switching operation by:
• opening or closing a first single pole, single current-carrying path switching device;
• and
• subsequently opening or closing a second single pole, single current-carrying path switching device;
• and
• instruct, using the processor, the electrical power switching system to perform a second switching operation by:
• opening or closing the second single pole, single current-carrying path switching device;
• and
• subsequently opening or closing the first single pole, single current-carrying path switching device.

A wye-delta switching system, comprising:

• one or more wye switching devices configured to connect and disconnect windings in a three-phase electric motor in a wye configuration;
• one or more delta switching devices configured to connect and disconnect the windings in the three-phase motor in a delta configuration;
• and
• control circuitry configured to:
• control operation of the one or more wye switching devices such that the one or more wye switching devices connect or disconnect the windings in the wye configuration in varying order;
• and
• control operation of the one or more delta switching devices such that the one or more delta switching devices connect or disconnect the winding in the delta configuration in varying order.