Electricity: motive power systems – Induction motor systems – Primary circuit control
Patent
1985-11-06
1988-05-10
Smith, Jr., David
Electricity: motive power systems
Induction motor systems
Primary circuit control
310184, 363 43, 440 6, H02P 540
Patent
active
047438282
ABSTRACT:
An electric drive system uses a multiphase alternating current motor and inverter to convert power from a battery source to provide propulsion. The phase sets defined by the motor stator winding are excited by a corresponding plurality of inverters. Time harmonic currents in the windings are effectively suppressed by providing the drive motor in a configuration having high leakage inductance in the stator winding. The windings are arranged in sets of multiples of three-phase windings. In the illustrated embodiment, the inverters are arranged to define three-phase inverters for exciting m sets, where m.gtoreq.2, of three-phase windings of the motor stator. The number of multiphase winding sets is determined in a manner that eliminates the need for paralleling of inverter switching devices.
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Jahns Thomas M.
Janonis Vytautas
Gould Inc.
Smith Jr. David
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