Electricity: motive power systems – Induction motor systems – Primary circuit control
Patent
1993-06-04
1995-04-11
Shoop, Jr., William M.
Electricity: motive power systems
Induction motor systems
Primary circuit control
318771, H02P 126
Patent
active
054061857
ABSTRACT:
A low-cost means to drive a three-phase motor from a DC energy source. The low cost is achieved by requiring only two inverter circuits instead of the conventional three inverter circuits. The third input phase to the motor is grounded. Balanced three-phase power is developed across the three stator coils of the motor, resulting in normal three-phase operation, including control of rotational direction. This is accomplished by appropriately selecting the phase angle of the two active phases.
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Cabeca John W.
Shoop Jr. William M.
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