Alleviating the right‐half‐plane zero effect on Z‐source converter output voltage regulation using the cascaded sliding mode controller
| Autor: | Gholamreza Arab Markadeh, Navid Reza Abjadi, Soheil Ahmadzadeh |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Physics
Frequency response Variable structure control 020209 energy 020208 electrical & electronic engineering 02 engineering and technology Transfer function Sliding mode control Control theory Right half-plane 0202 electrical engineering electronic engineering information engineering Minimum phase Voltage regulation Electrical and Electronic Engineering |
| Zdroj: | IET Power Electronics. 13:3419-3427 |
| ISSN: | 1755-4543 1755-4535 |
| Popis: | This study presents the cascaded variable structure control approach with respect to the non-minimum phase nature of the DC–DC Z-source converter (ZSC). The method is based on the sliding mode control technique for output voltage regulation. The control-to-output transfer function of the ZSC contains a right-half-plane (RHP) zero in continuous conduction mode. The RHP zero, obtained by a linearised small-signal model, results in frequency response limitation. In this case, the converter output voltage control should be studied regarding to the RHP zero effect. To alleviate this effect and enhance the dynamic performance, the cascaded sliding mode control method is proposed. The cascaded sliding mode controller guarantees asymptotically minimum phase stability as well as robustness against input voltage variation and load resistance uncertainty. The capability and effectiveness of the proposed control method are supported by experimental results. |
| Databáze: | OpenAIRE |
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