Title :
Single phase induction motor with an electronically controlled capacitor
Author :
Lettenmaier, Terrance M. ; Novotny, Donald W. ; Lipo, Thomas A.
Author_Institution :
Dept. of Electr. & Comput. Eng., Wisconsin Univ., Madison, WI, USA
Abstract :
A single-phase induction motor using a novel electronically controlled capacitor is described. The system uses a DC capacitor switched by a transistor H bridge. By proper control of the transistor switching the circuit synthesizes a continuously variable capacitance in series with the auxiliary winding. The system could be used to replace standard single-phase motor capacitor configurations to provide improved machine performance. A description of basic system operation, a comparison with conventional motor operation, and illustrations of some of the design flexibility inherent in the proposed system are included.<>
Keywords :
capacitors; induction motors; auxiliary winding; electronically controlled capacitor; single-phase induction motor; transistor H bridge; Bridge circuits; Capacitance; Capacitors; Circuit synthesis; Control system synthesis; Electric variables control; Induction motors; Switching circuits;
Conference_Titel :
Industry Applications Society Annual Meeting, 1988., Conference Record of the 1988 IEEE
Conference_Location :
Pittsburgh, PA, USA
DOI :
10.1109/IAS.1988.25058
