Single Phase Motor Energy Economizer for Regulating the Use of Electricity

A method for reducing restart loading to a power grid caused by an induction motor, the method comprising:

• (a) inserting a solid state switch in series between the motor and a source of AC voltage;
• (b) upon initial power from the source of AC voltage, delaying for a period of time;
• (c) then starting the motor by decreasing a delay between a trigger of the solid state switch and the phase of the AC voltage;
• (d) then operating the motor until a loss of power from the source of AC voltage, then repeating from step (b).

A system for controlling power from an AC voltage to an induction motor, the system comprising:

• a power connection, the power connection interfaced to a power grid;
• a solid-state switch, the solid-state switch in series between the power connection and the induction motor, the solid-state switch is controlled by a trigger, the trigger is controlled to turn on the solid-state switch at a trigger delay into each half-cycle of a waveform of an AC voltage from the power connection, whereas full power is supplied to the induction motor when the trigger delay is zero;
• a control circuit having a processor, a memory for storing instructions interfaced to the processor, the processor controlling the trigger delay;
• a set of software instructions stored in the memory, the set of software instructions operable to determine when the AV voltage become present from the power grid, the set of software instructions operable to delay for a period, after the delay, the set of software instructions operable to initiate the trigger and decrease the trigger delay to start the induction motor.