Abstract
Active pulse-width-modulated (PWM) voltage rectifiers are commonly used to convert ac power from a three-phase grid to a regulated dc voltage with unity input power factor. The output voltage regulation is normally achieved by an outer voltage feedback loop and a sinusoidal pulse-width-modulated (SPWM) inner current loop. Due to output voltage disturbances, such as those produced by a capacitive load, the inner current loop can be easily driven into over-modulation and possible six-step operating regions. Current research efforts have focused on extending the linearity of the modulated voltage in the over-modulation range to reduce the input current harmonics and on studying the closed-loop stability via conventional small-signal linearization around a fixed operating point. Such linear techniques obviously fall short of predicting large-signal transient stability. In this paper, catastrophic bifurcation of the three-phase voltage-source converter is reported. The physical origin of the phenomenon is identified. Boundaries of catastrophic bifurcation in the parameter space are derived. The phenomenon has been verified experimentally.
Original language | English |
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Title of host publication | Proceedings - 4th International Workshop on Chaos-Fractals Theories and Applications, IWCFTA 2011 |
Pages | 147-151 |
Number of pages | 5 |
DOIs | |
Publication status | Published - 28 Dec 2011 |
Event | 4th International Workshop on Chaos-Fractals Theories and Applications, IWCFTA 2011 - Hangzhou, Zhejiang, China Duration: 19 Oct 2011 → 21 Oct 2011 |
Conference
Conference | 4th International Workshop on Chaos-Fractals Theories and Applications, IWCFTA 2011 |
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Country/Territory | China |
City | Hangzhou, Zhejiang |
Period | 19/10/11 → 21/10/11 |
Keywords
- bifurcation
- Power electronics
- three-phase boost rectifier
ASJC Scopus subject areas
- Computational Theory and Mathematics
- Computational Mathematics