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| SVPWM Strategy for Three-Level Inverter Based on SVPWM Strategy for Two-Level Inverter |
| Jiang Weidong1, 2, Wang Qunjing1, 2, 3, Chen Quan3, Shi Xiaofeng1 |
| 1. Hefei University of Technology Hefei 230009 China 2. Research Center for Photovoltaic System Engineering Ministry of Education Hefei 230009 China 3. Anhui University Hefei 230009 China |
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Abstract Based on the intrinsic relationship between SVPWMs for two-level inverters and three-level inverters, a novel SVPWM control algorithm is proposed for three-level. The dwell time of voltage vector for three-level inverter can be acquired from counterpart for two-level inverter by using a linear transformation. Aiming to analysis the output PWM sequence of three-level inverter, a novel classification standard of voltage vector is proposed. Based on evaluating the PWM sequences, a novel PWM sequence is given, that can reduce the total harmonics distortion of inverter output. The control strategy can be extended to five or seven-level inverters easily. At last, the proposed algorithm is verified on prototype in laboratory.
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Received: 15 October 2007
Published: 11 February 2014
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2009, Vol. 24 
