Hybrid Modulation Strategy to Eliminate Current Distortion for PV Grid-Tied H6 Inverter
Source abstract
Abstract
This paper proposes a new hybrid modulation mode (HMM) to eliminate the zero-crossing distortion of grid current and enable reactive power provision for a H6 configuration PV (photovoltaic) grid-tied inverter. The common mode voltage, leakage current, and efficiency for the proposed approach are also analyzed. In order to improve grid frequency tracking a novel frequency self-adaptive proportional-integral-resonant (FSAPIR) controller is implemented which reduces error for changes in grid frequency. The proposed approach provides the basis for accurately adjusting the active and reactive current without error to improve the grid support capability of the inverter. Theoretical analysis, simulation, and experiment verify the newly proposed modulation mode and controller.
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Research context
OpenAlex topics: Microgrid Control and Optimization · Multilevel Inverters and Converters · Photovoltaic System Optimization Techniques
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Affiliations
WANMA Group, Hangzhou 310000, China
State Grid Jibei Electric Power Company, Beijing 100053, China
ABB Inc, Raleigh, NC 27606, USA
References (24)
Show source-provided references
1. Digital control of actual grid-connected converters for ground leakage current reduction in PV transformerless systems10.1109/TII.2012.2192284 ↗
2. VDE (2011). VDE-AR-N 4105:2011-08: Power Generation Systems Connected to the Low-Voltage Distribution Network—Technical Minimum Requirements for the Connection to and Parallel Operation with Low-Voltage Distribution Networks, DIN_VDE Normo.
3. Model Predictive Current Control of Grid Connected Neutral-Point Clamped Converters to Meet Low Voltage Ride-Through Requirements10.1109/TIE.2014.2364459 ↗
4. Li, C., Sun, Y., and Chen, X. (2007, January 4–6). Recommendations to improve power system security: Lessons learned from the Europe blackout on November 4. Proceedings of the 42nd International Universities Power Engineering Conference (UPEC), Brighton, UK.
5. Modulation Techniques to Reduce Leakage Current in Three-Phase Transformerless H7 Photovoltaic Inverter
6. A Digitally Controlled Low-EMI SPWM Generation Method for Inverter Applications10.1109/TII.2013.2261078 ↗
7. Modulation techniques to eliminate leakage currents in transformerless three phase photovoltaic systems10.1109/TIE.2009.2029511 ↗
8. Eliminating leakage currents in neutral point clamped inverters for photovoltaic systems10.1109/TIE.2011.2138671 ↗
9. Active common–mode filter for ground leakage current reduction in grid–connected PV converters operating with arbitrary power factor10.1109/TIE.2013.2284160 ↗
10. Victor, M., Greizer, F., and Bremicker, S. (2008). Method of Converting a Direct Current Voltage from a Source of Direct Current Voltage, More Specifically from a Photovoltaic Source of Direct Current Voltage, into a Alternating Current Voltage. (7,411,802B2), U.S. Patent.
11. High-efficiency single-phase transformerless pv h6 inverter with hybrid modulation method10.1109/TIE.2012.2225391 ↗
12. Zero-crossing distortion in grid-connected PV inverters10.1109/TIE.2005.844254 ↗
13. Highly efficient single-phase transformerless inverters for grid-connected photovoltaic systems10.1109/TIE.2009.2037654 ↗
14. An optimized transformerless photovoltaic grid-connected inverter10.1109/TIE.2010.2054056 ↗
15. Zhao, Z., Xu, M., Chen, Q., Lai, J.-S., and Cho, Y. (2010, January 12–16). Derivation of boost-buck converter based high-efficiency robust PV inverter. Proceedings of the IEEE Energy Conversion Congress and Exposition (ECCE), Atlanta, GA, USA.10.1109/ECCE.2010.5618248 ↗
16. Heribert, S., Christoph, S., and Jurgen, K. (2003). Inverter for Transforming a DC Voltage into an AC Current or an AC Voltage. (1,369,985A2), EU Patent.
17. An LLCL-power filter for single-phase grid-tied inverter10.1109/TPEL.2011.2161337 ↗
18. Assessment and optimization of the transient response of proportional–resonant current controllers for distributed power generation systems10.1109/TIE.2012.2188257 ↗
19. Rodriguez, P., Luna, A., Ciobotaru, M., Teodorescu, R., and Blaabjerg, F. (2006, January 6–10). Advanced grid synchronization system for power converters under unbalanced and distorted operating conditions. Proceedings of the IECON 2006—32nd Annual Conference on IEEE Industrial Electronics, Paris, France.10.1109/IECON.2006.347807 ↗
20. Analysis and design of resonant current controllers for voltage source converters by means of Nyquist diagrams and sensitivity function10.1109/TIE.2011.2126535 ↗
21. VDE (2005). Vorausgegangener Norm-Entwurf: E DIN VDE 0126-1-1 (VDE 0126-1-1), VDE.
22. IEEE (2000). IEEE Recommended Practice for Utility Interface of Photovoltaic (PV) Systems, IEEE.
23. Berasategi, A., Caba, C., Alonso, C., and Estibals, B. (2009, January 8–10). European efficiency improvement in photovoltaic applications by means of parallel connection of power converters. Proceedings of the 13th European Conference on Power Electronics and Applications, Barcelona, Spain.
24. A new high-efficiency single-phase transformerless PV inverter topology10.1109/TIE.2009.2024092 ↗