H - Electricity – 02 – P
Patent
H - Electricity
02
P
H02P 9/14 (2006.01) H02K 7/18 (2006.01) B64D 41/00 (2006.01)
Patent
CA 2635443
An electromechanical power transfer system that transfers power between a prime mover and a direct current (DC) electrical system, comprises: a permanent magnet machine (PMM) that has a permanent magnet (PM) rotor coupled to the prime mover, a stator with a multiphase alternating current (AC) winding coupled to an AC bus and a control coil with a winding that has a configuration to generate a magnetic field with flux that varies the reactance of the stator winding with the application of control coil current; a control coil current sensor for generating a control coil current signal that is representative of the level of electrical current in the control coil; an electrical current sensor for generating a DC bus current signal that is representative of the level of DC current through the DC bus; an electrical potential sensor for generating a DC bus potential signal that is representative of the level of DC potential on the DC bus; a fixed pattern active rectifier and inverter system coupled between the AC bus and a DC bus; a position sensing system for generating a rotor position signal that is representative of the angular position of the PM rotor; and a control coil current regulator system that regulates the control coil current; wherein the control coil current regulator system receives the DC bus current signal in a DC bus current feedback loop and the control coil current signal in a control coil current feedback loop to generate a corresponding level of the control coil current that regulates current in the stator to a desired level and in a generating mode the fixed pattern active rectifier and inverter system receives the DC bus potential signal in a DC bus potential feedback loop and the rotor position signal in a rotor position feedback loop to maintain a constant potential on the DC bus regardless of sudden changes in electrical load on the DC bus.
Dooley Kevin
Maddali Vijay K.
Rozman Gregory I.
Hamilton Sundstrand Corporation
Norton Rose Canada S.e.n.c.r.l.,s.r.l./llp
Pratt & Whitney Canada Corp.
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