Novel Control Technology for Reducing Output Power Harmonics of Standalone Solar Power Generation Systems

被引:0
|
作者
Liu, Hwa-Dong [1 ,2 ]
Lin, Jhen-Ting [2 ]
Lin, Xin-Wen [2 ]
Lin, Chang-Hua [3 ]
Farooqui, Shoeb-Azam [3 ]
机构
[1] Natl Taiwan Normal Univ, Undergrad Program Vehicle & Energy Engn, Taipei 106, Taiwan
[2] Natl Taiwan Normal Univ, Dept Ind Educ, Taipei 106, Taiwan
[3] Natl Taiwan Univ Sci & Technol, Dept Elect Engn, Taipei 106, Taiwan
关键词
standalone solar power system; cake sweetness maximum power point tracking; adjustable frequency and duty cycle; total voltage harmonic distortion; MULTILEVEL INVERTERS; ELIMINATION;
D O I
10.3390/pr11092770
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
This study presents a standalone solar power system that incorporates a photovoltaic (PV) module, a boost converter, an H-bridge inverter, a low-pass filter (LPF), and a microcontroller unit (MCU). A novel cake sweetness maximum power point tracking (CS MPPT) algorithm and adjustable frequency and duty cycle (AFDC) control strategy has been proposed and efficiently applied to the solar power system for optimizing the system efficiency and output power quality. The experimental results show that the proposed CS MPPT algorithm achieves an efficiency of 99% under both the uniform irradiance conditions (UIC) and partial shading conditions (PSC). Subsequently, the AFDC control strategy is applied to the H-bridge inverter which improves the output AC voltage and AC current and thereby improving the power quality. The system ensures a stable 110 Vrms/60 Hz AC output voltage with only 2% total voltage harmonic distortion of voltage (THDv), and produces a high-quality output voltage with reduced LPF volume and better economic benefits. The comparative analysis demonstrates that the characteristics and the performances of the CS MPPT algorithm in combination with the AFDC control strategy is better than the existing several maximum power point tracking (MPPT) techniques and inverter control strategies. The research output affirms the potential of the proposed solar power system to fulfill the actual daily needs of electricity by harnessing the maximum power from PV modules.
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页数:17
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