CONTROL SYSTEM AND CONTROL METHOD

A control system (100, 200, 300) for a single phase induction motor (150, 250) with a main (151, 251) and an auxiliary winding (152, 252) comprises a first and a second bidirectional switching element (101, 102), the former being arranged between a phase supply input (103, 203) and the main winding...

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Bibliographische Detailangaben
Hauptverfasser:	RAUTE, Reiko, GALEA, Johann, GALEA, Roger, DEMICOLI, Jason
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION
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Beschreibung
Zusammenfassung:	A control system (100, 200, 300) for a single phase induction motor (150, 250) with a main (151, 251) and an auxiliary winding (152, 252) comprises a first and a second bidirectional switching element (101, 102), the former being arranged between a phase supply input (103, 203) and the main winding (151, 251) and the latter bing arranged electrically parallel to the main winding (151, 251). A control unit (105, 205) controls in an alternating manner during a positive half-wave of a supply voltage the first bidirectional switching element (101) to provide a positive current to the main winding (151, 251) and the second bidirectional switching element (102) to provide a freewheeling current path for the positive current through the main winding (151, 251). The control unit (105, 205) controls in an alternating manner during a negative half-wave of a supply voltage the first bidirectional switching element (101) to provide a negative current to the main winding (151, 251) and the second bidirectional switching element (102) to provide a freewheeling current path for the negative current through the main winding (151, 251).