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An Induction-Motor Control Method for Minimization of Capacitor-Voltage Fluctuations in a Modular Multilevel DSCC Inverter: Its Applications to a Quadratic-Torque Load.
- Source :
-
Electrical Engineering in Japan . Dec2017, Vol. 201 Issue 4, p34-44. 11p. - Publication Year :
- 2017
-
Abstract
- This paper aims at minimizing capacitor-voltage fluctuations inherent in a modular multilevel cascade inverter based on double-star chopper cell (DSCC) or a modular multilevel DSCC inverter. The inverter can drive an induction motor loaded with a quadratic-torque load. Both theoretical analysis and numerical calculation reveal that the voltage fluctuations can be minimized when the ratio of a magnetizing-current component with respect to a torque-current component in the motor current is set to unity, regardless of the motor mechanical speed. A three-phase DSCC inverter is designed and constructed to drive a 380-V, 15-kW, 50-Hz, four-pole, induction motor loaded with a quadratic torque that is proportional to a square of the motor mechanical speed. Experimental results confirm the validity of the theoretical and numerical calculations. [ABSTRACT FROM AUTHOR]
- Subjects :
- *CAPACITORS
*ELECTRIC potential
*ELECTRIC inverters
*INDUCTION motors
*TORQUE
Subjects
Details
- Language :
- English
- ISSN :
- 04247760
- Volume :
- 201
- Issue :
- 4
- Database :
- Academic Search Index
- Journal :
- Electrical Engineering in Japan
- Publication Type :
- Academic Journal
- Accession number :
- 124787203
- Full Text :
- https://doi.org/10.1002/eej.23001