Title:
PHASE ANGLE CONTROL FOR SYNCHRONOUS MACHINE CONTROL
Document Type and Number:
WIPO Patent Application WO2005034329
Kind Code:
A3
Abstract:
A synchronous machine control device for a polyphase synchronous machine (20) includes a phase detection sensor (32) and a control circuit (30, 130). The phase detection sensor (32) is set to 90° advanced. The control circuit (30, 130) includes phase detection, commutation driver and time delay circuits (38A-38C, 50, 40A-40C, respectively). The phase detection circuit (38A-38C) is coupled to the phase detection sensor (32) and is configured to determine electrical phase of the machine (20). The commutation driver circuit (50) is coupled to the phase detection circuit (38A-38C) and has high-side and low-side outputs for selectively and alternately controlling commutation of the machine (20). The time delay circuit (40A-40C) is coupled to the phase detection sensor (32), the phase detection circuit (38A-38C) and the commutation driver circuit (50). The time delay circuit (40A-40C) provides a control output to the commutation driver circuit (50) based upon an adjustable setpoint compared to a speed of the machine (20) as measured by the phase detection circuit (38A-38C).
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Inventors:
FENLEY THOMAS D (US)
Application Number:
PCT/US2004/032068
Publication Date:
December 21, 2006
Filing Date:
September 30, 2004
Export Citation:
Assignee:
J L BEHMER CORP (US)
International Classes:
H02P1/46; F02D29/06; F02D41/02; F02D41/08; F02D41/34; H02P1/50; H02P3/18; H02P6/00; H02P9/04; H02P23/00; H02P27/00; H02P
Foreign References:
| US5838127A | 1998-11-17 | |||
| US5892342A | 1999-04-06 |
Other References:
See also references of EP 1676358A4
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