Method and apparatus for reducing voltage stresses in electric m

Electrical generator or motor structure – Dynamoelectric – Rotary

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310168, 310180, 310203, 29605, 336189, H02K 1502, H02K 318, H02K 3041, H01F 2728

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active

059491701

ABSTRACT:
A method and apparatus for reducing winding failures in reluctance machines wherein winding coils for the switched reluctance motor are formed and positioned such that the turn-to-ground capacitance of the portion of the winding coil coupled to an electronic motor controller is reduced. Alternate embodiments are disclosed wherein additional insulation, and capacitive voltage distributors are provided to enable a switched reluctance motor to better handle the voltage stresses produced when high frequency or high dV/dt voltage pulses are provided to the motor.

REFERENCES:
patent: 2201845 (1940-05-01), Wieseman
patent: 2905911 (1959-09-01), Kurita
patent: 2930014 (1960-03-01), Van Der Hoek et al.
patent: 3713061 (1973-01-01), Weber
patent: 4017815 (1977-04-01), Sauer
patent: 4376904 (1983-03-01), Horrigan
patent: 4454492 (1984-06-01), Thackray
patent: 4677332 (1987-06-01), Heyraud
patent: 4794361 (1988-12-01), Young
patent: 4916346 (1990-04-01), Kliman
patent: 4918831 (1990-04-01), Kliman
patent: 5023502 (1991-06-01), Johnson
patent: 5053666 (1991-10-01), Kliman
patent: 5111096 (1992-05-01), Horst
patent: 5166569 (1992-11-01), Shervington et al.
patent: 5323080 (1994-06-01), Shahamat et al.
European Search Report dated Nov. 25, 1997 for corresponding European patent application 96302409.6.
Rhode Nelson and Gary Skibinsky, Allen Bradley Co., Solutions To Motor Insulation Failures, Power Transmission Design, Aug. 1995.
Stephenson and Blake, The Characteristics, Design and Applications of Switched Reluctance Motors and Drives, (Jun. 1993, Nuremberg, Germany).
Hutton & Miller, Use of Flux Screens in Switched Reluctance Motors, Sep. 1989, pp. 312-316, Proc. EMD, London.
Potoradi et al., Transient Overvoltages Caused by Switching of High Voltage Asynchronous Machines and their Distribution in Stator Sep. 5-8, 1994, pp. 649-; vol. 2, Proc. Int. Conf. on Electrical Machines, Paris.
Cornick & Thompson, Steep-Fronted Switching Voltage Transients and their Distribution in Motor Windings Part 1: System Measurements of Steep-Fronted Switching Voltage Transients, Mar. 1982, vol. 129, No. 2, IEEE Proc.
Bonnett, A., Analysis of the Impact of Pulse-Width Modulated Inverter Voltage Waveforms on A.C. Induction Motors, U.S. Elecltrical Motors Division of Emerson Electric.
Takahashi et al., Motor Lead Length Issues for IGBT PWM Drives, Conf. Record of 1995 IEEE Annual Pulp and Paper Technical Conference, IEEE Cat No. 95CH3572-5, pp. 21-27.

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