Proceedings of the 2015 International Conference on Modeling, Simulation and Applied Mathematics

Unified Control of Single-stage Z-source Grid-connected Photovoltaic System with Harmonics and Reactive Power Compensation

Authors
Jingwei Zhang, Honghua Wang, Chengliang Wang, Zhebei Wang, Wei Han, Rong Sun
Corresponding Author
Jingwei Zhang
Available Online August 2015.
DOI
https://doi.org/10.2991/msam-15.2015.9How to use a DOI?
Keywords
Z-source inverter; grid-connected PV system; reactive power compensation; harmonic current restrain; SVPWM; single-neuron PID
Abstract
Based on conventional single-stage grid-connected photovoltaic (PV) Z-source inverter, the unified control combining with harmonic and reactive power compensation is proposed. The grid harmonics and reactive current are measured while PV system outputting power. Then corresponding reactive power compensation is implemented to improve grid power factor. In this paper, the principle of boosting voltage for Z-source network is illustrated. Harmonic measurement method based on the theory of instantaneous reactive power is applied. Then the single-neuron PID controller was designed for maximum power point tracing (MPPT) rapidly. The unified control strategy of the whole system is proposed based on SVPWM. Simulation results revealed the grid reactive power was decreased and output distorted current was improved significantly. Besides, when irradiance suddenly changed, Z-source inverter can still trace the new maximum power point, which verified proposed unified control is accurate and feasible.
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Proceedings
2015 International Conference on Modeling, Simulation and Applied Mathematics
Part of series
Advances in Intelligent Systems Research
Publication Date
August 2015
ISBN
978-94-6252-104-9
ISSN
1951-6851
DOI
https://doi.org/10.2991/msam-15.2015.9How to use a DOI?
Open Access
This is an open access article distributed under the CC BY-NC license.

Cite this article

TY  - CONF
AU  - Jingwei Zhang
AU  - Honghua Wang
AU  - Chengliang Wang
AU  - Zhebei Wang
AU  - Wei Han
AU  - Rong Sun
PY  - 2015/08
DA  - 2015/08
TI  - Unified Control of Single-stage Z-source Grid-connected Photovoltaic System with Harmonics and Reactive Power Compensation
BT  - 2015 International Conference on Modeling, Simulation and Applied Mathematics
PB  - Atlantis Press
SN  - 1951-6851
UR  - https://doi.org/10.2991/msam-15.2015.9
DO  - https://doi.org/10.2991/msam-15.2015.9
ID  - Zhang2015/08
ER  -