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Vol. 169, Issue 4, April 2014, pp. 18-24

 

Bullet

 

A Cascade Multilevel Converter of Switched Reluctance Motor
and Its Control Timing Sequence
 

1 Runquan MENG, 2 Min WU

1 College of Electric and Dynamic Engineering, Taiyuan University of Technology, Taiyuan, Shanxi Province, 030024, China
2 School of Graduate, Taiyuan University of Technology, Taiyuan, Shanxi Province, 030024, China
1 Tel.: +86-13834504698, fax: +86-0351-2209556

1 E-mail: mengrunquan@126.com

 

Received: 23 January 2014 /Accepted: 7 March 2014 /Published: 30 April 2014

Digital Sensors and Sensor Sysstems

 

Abstract: A kind of cells cascaded multilevel converter of switched reluctance motor was proposed, which can be made up of low voltage power electronic devices and can be applied to drive high voltage switched reluctance motor. Based on introducing the main circuit topology, the operating modes and the voltage superposition law of proposed converter, the control strategy for the switched reluctance drive by the use of proposed converter was analyzed and a kind of corresponding control time sequence was established. By means of Matlab/Simulink simulation and actual system experiment, the system controlled under proposed timing sequence was validated to have good driving performance. In addition, the experiment result shows that the power converter has almost no harmonic pollution to the power source and has a high grid-side power factor because of employing phase-shifting transformer and multi-pulse rectifier in the input port, the threat against insulation of the motor winding decreased with the lessening of voltage gradient of the motor winding by making the winding voltage to vary in multi-level.

 

Keywords: Switched reluctance motor, Cascaded cells, Power converter, Grid-side harmonic, Voltage gradient.

 

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