Optimizing grid-tied photovoltaic inverters with MPPT and neutral point voltage balancing technique

Zhanshuo Zhang

doi:10.1117/12.3024246

13 May 2024 Optimizing grid-tied photovoltaic inverters with MPPT and neutral point voltage balancing technique

Zhanshuo Zhang

Proceedings Volume 13159, Eighth International Conference on Energy System, Electricity, and Power (ESEP 2023); 1315916 (2024) https://doi.org/10.1117/12.3024246
Event: Eighth International Conference on Energy System, Electricity and Power (ESEP 2023), 2023, Wuhan, China

Abstract

In advancing renewable energy, the efficiency of photovoltaic grid-tied inverters has become crucial. This research proposes a Solar PV inverter integrated with control strategies and modulation techniques, aimed at maximizing power output and enhancing dynamic performance. Firstly, precise guidance in perturbation direction under varying conditions is proposed by employing the Incremental Conductance (INC) method for MPPT. Meanwhile, the efficiency of the boost converter with Pulse Width Modulation (PWM) control is highlighted. Secondly, Space Vector Pulse Width Modulation (SVPWM) is used to demonstrate its potential in maximizing output voltage amplitude while simultaneously minimizing voltage conversion losses. Thirdly, the synchronization with grid voltage frequency is confirmed by implementing the Phase-Locked Loop (PLL) and D-Q Transformation in system control. Finally, the significant role of neutral voltage balancing in the T-type inverter is emphasized, illustrating the system's robustness and precision. The simulation results show the distinct waveform of SVPWM's reference voltage, coupled with a 1.6% THD.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Zhanshuo Zhang "Optimizing grid-tied photovoltaic inverters with MPPT and neutral point voltage balancing technique", Proc. SPIE 13159, Eighth International Conference on Energy System, Electricity, and Power (ESEP 2023), 1315916 (13 May 2024); https://doi.org/10.1117/12.3024246

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