Elevator DC motor drive with unity power factor, including regen

Details Elevator DC motor drive with unity power factor, including regen Elevator DC motor drive with unity power factor, including regen

1999-05-12

2000-12-19

Berhane, Adolf Deneke

Electric power conversion systems

Current conversion

Using semiconductor-type converter

363 44, H02M 7217

Patent

active

061634727

ABSTRACT:
Power of three-phase AC mains is directly converted to DC power by a DC matrix converter employing insulated gate bipolar power transistors to directly connect the AC mains to an elevator DC motor for periods of time which are short compared with the period of the AC voltage, so as to continuously synthesize the desired AC voltage to the elevator motor. Filters are provided at the input and output of the DC matrix converters. Separate DC matrix converters may supply both the armature current and the field current to an elevator motor. Signals for selectively gating the power transistors are provided by converter control logic in response to a conventional phased locked loop, an elevator motion controller, and position speed and current control logic.

REFERENCES:
patent: 4648022 (1987-03-01), Schauder
patent: 4697230 (1987-09-01), Neft
patent: 4833588 (1989-05-01), Schauder
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patent: 5852559 (1998-12-01), Li
patent: 5949672 (1999-09-01), Bernet
patent: 6058028 (2000-05-01), Czerwinski
P. Nielsen, F. Blaabjerg, J.K. Pedersen: Space Vector Modulated Matrix Converter With Minimized Number of Switchings and a Feedforward Compensation of Input Voltage Unbalance, IEEE International Conference on Power Electronics, Drives, and Energy Systems for Industrial Growth, New Delhi, Jan. 1996, pp. 833-839.
D.G. Holmes, T. A. Lipo: Implementation of a Controlled Rectifier Using AC-AC Matrix Converter Theory, IEEE Transactions on Power Electronics, vol. 7, No. 1, Jan. 1992, pp. 240-250.

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