Title:
STEP WAVE POWER CONVERTER
Document Type and Number:
WIPO Patent Application WO2001047095
Kind Code:
A3
Abstract:
A single- or multi-phase step wave power converter includes multiple transformers configured to receive DC voltage from one or more power sources. Each of the transformers includes a primary winding and a secondary winding. The transformers are each configured to supply a step for a step wave AC output. Bridge circuits are supplied for controlling input of DC voltage into the primary windings of the transformers. Steps for the step wave AC output are output from the secondary windings based upon the input provided to the primary windings. DC source management circuitry manages which DC power source(s) supplies DC voltage input to each of the bridge circuits. The management circuitry provides seamless power switching between the plurality of DC power sources based on each power source's performance characteristics. A pulse-width modulator can also be provided to the step wave power converter to modulate the input into a selected primary winding. In this way, the step wave AC output can be fne-tuned in substantial conformance with an ideal AC waveform.
Inventors:
SCHIENBEIN LAWRENCE A (US)
DROPPO GERALD W (US)
DONNELLY MATTHEW K (US)
HARRIS BRENT EARLE (CA)
DROPPO GERALD W (US)
DONNELLY MATTHEW K (US)
HARRIS BRENT EARLE (CA)
Application Number:
PCT/US2000/026788
Publication Date:
December 13, 2001
Filing Date:
September 28, 2000
Export Citation:
Assignee:
INTERNAT POWER SYSTEMS INC (CA)
SCHIENBEIN LAWRENCE A (US)
DROPPO GERALD W (US)
DONNELLY MATTHEW K (US)
HARRIS BRENT EARLE (CA)
SCHIENBEIN LAWRENCE A (US)
DROPPO GERALD W (US)
DONNELLY MATTHEW K (US)
HARRIS BRENT EARLE (CA)
International Classes:
H02M7/48; H02M7/49; (IPC1-7): H02M7/48
Domestic Patent References:
| WO1999041828A1 | 1999-08-19 |
Foreign References:
| US4032832A | 1977-06-28 | |||
| US5041957A | 1991-08-20 | |||
| EP0390184A2 | 1990-10-03 | |||
| DE19635606A1 | 1998-03-05 | |||
| US5132892A | 1992-07-21 | |||
| US5933339A | 1999-08-03 | |||
| US4800481A | 1989-01-24 | |||
| EP0874448A1 | 1998-10-28 | |||
| US4628438A | 1986-12-09 | |||
| DE19626447A1 | 1998-03-12 | |||
| EP0913918A2 | 1999-05-06 |
Other References:
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 05 30 April 1998 (1998-04-30)
H. WEISS: "Control system for the static system-tie frequency converter Muldenstein including operation results.", EPE 95, 19 September 1995 (1995-09-19), sevilla, pages 185 - 195, XP000537742
H. WEISS: "Control system for the static system-tie frequency converter Muldenstein including operation results.", EPE 95, 19 September 1995 (1995-09-19), sevilla, pages 185 - 195, XP000537742
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