Electricity: motive power systems – Switched reluctance motor commutation control
Reexamination Certificate
2007-04-10
2007-04-10
Duda, Rina (Department: 2837)
Electricity: motive power systems
Switched reluctance motor commutation control
C318S132000, C318S434000, C318S701000, C318S461000
Reexamination Certificate
active
11361925
ABSTRACT:
Two apparatuses are disclosed for controlling the speed of an AC synchronous motor-pump utilizing a series of stepped voltage pulses at the driving frequency. The first apparatus is an isolated variable frequency drive comprising step-down transformer100, full wave rectifier and filter101, micro-controller108, driving-voltage array generator102, gate driver107, inverter bridge103and step-up transformer104. The second apparatus is a non-isolated high voltage variable frequency drive comprising full wave rectifier and filter201, low voltage, dual output power supply205, micro-controller208, driving-voltage array generator202, gate driver207and inverter bridge203. Methods are given to determine voltage array values and pulse times to generate a stepped voltage approximation of a sine wave driving waveform.
REFERENCES:
patent: 5668425 (1997-09-01), Marioni et al.
patent: 5838134 (1998-11-01), Cummins
patent: 6140795 (2000-10-01), Cummins
patent: 6264441 (2001-07-01), Marioni
patent: 6687142 (2004-02-01), Scott
patent: 332836 (1998-11-01), None
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