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A NOVEL PWM SCHEME OF VOLTAGE SOURCE INVERTERS BASED ON SPACE VECTOR THEORY
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| Author(s) |
Sotoshi Ogasawara; Hirofumi Akagi; Akira Nabae |
| Abstract |
A novel PWM scheme which can considerably reduce harmonic currents is proposed. It is explained analytically that the harmonic currents depend on the location of the reference voltage vector, the inverter output voltage vectors used at a switching period, and the sequence of these output voltage vectors. In the novel PWM scheme, the switching sequence is selected so that the harmonic current is minimum. An experimental system which generates the PWM patterns by software at real time is constructed. Compared with the conventional sinusoidal PWM scheme, it is confirmed that the current ripple is decreased and the spectrum is shifted and dispersed to higher frequency region. |
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| Filename: | Unnamed file |
| Filesize: | 599 KB |
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| Type |
Members Only |
| Date |
Last modified 2021-02-16 by System |
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