Abstract
There is an inherent correlation between the carrier-based PWM and SVPWM in two level inverters. Some researchers have proved that this inherent relationship also exists between those two modulation strategies in three level inverters. In the former researches, the unity correlation was focused on the traditional 8 segments SVPWM switching sequences, but it couldn't be applied to some switching sequences more than 8 segments obtained by using redundancy vectors in the practical SVPWM modulation strategy. So far, seldom researchers have the unity test of SVPWM and SPWM under these conditions, so the existing unity theory between SVPWM and SPWM contains some shortage. In this paper, a technique of decomposing the original modulation wave into two sub-modulation waves has been proposed which is utilized to discuss the unity relations between SPWM and SVPWM with more than 8 segments. The strict theoretical derivation and simulation result effectively evolves the unity theory of SPWM and SVPWM successfully.
| Original language | English |
|---|---|
| Pages (from-to) | 71-78 |
| Number of pages | 8 |
| Journal | Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering |
| Volume | 33 |
| Issue number | 9 |
| State | Published - 25 Mar 2013 |
Keywords
- Carrier-based PWM
- Space vector pulse width modulation (SVPWM)
- Special modulation wave
- The unity of SVPWM and sinusoidal PWM (SPWM)