Asymmetrical Six-Phase Space Vector Pwm Scheme
<p class="14AbstracttekstasAbstract"><span lang="EN-GB">Multiphase electric motors have smaller torque pulsations and are more reliable that their three-phase alternatives. However, standard electricity grids around the world are three-phase, so power inverter is need...
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| Format: | Article |
| Language: | English |
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Vilnius Gediminas Technical University
2014-05-01
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| Series: | Mokslas: Lietuvos Ateitis |
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| Online Access: | http://www.mla.vgtu.lt/index.php/mla/article/view/633 |
| Summary: | <p class="14AbstracttekstasAbstract"><span lang="EN-GB">Multiphase electric motors have smaller torque pulsations and are more reliable that their three-phase alternatives. However, standard electricity grids around the world are three-phase, so power inverter is needed to drive multiphase motors. Inverter is used not only to power the motor, but also to control the amplitude and frequency of the produced voltage, thus controlling motor speed and torque. Multiphase systems with odd number of phases have been widely investigated; therefore, this paper focuses on a six-phase inverter with a single neutral symmetrical load. A novel asymmetrical space vector modulation scheme is proposed and evaluated using simulations in Matlab/Simulink. Simulation results are compared to other modulation schemes. The proposed method is suitable for generating near-sinusoidal output voltages; however, it might not be suited for driving motors with sinusoidally distributed stator windings.</span></p> |
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| ISSN: | 2029-2341 2029-2252 |