Research on charging/discharging control strategy of battery-super capacitor hybrid energy storage system in photovoltaic system
Research on charging/discharging control strategy of battery-super capacitor hybrid energy storage system in photovoltaic system
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DOI：
10.1109/ipemc.2016.7512723
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发表时间：
2016-05
期刊：
影响因子：
--
通讯作者：
Hh Wang;Jiancheng Zhang
中科院分区：
文献类型：
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作者：
Hh Wang;Jiancheng Zhang
光伏系统功率受自然环境因素影响较大，供电可靠性和电压质量较差，而储能系统可以有效解决这一问题。混合储能系统结合了电池大容量、中等功率、充放电次数少的特点和超级电容器功率密度大、容量小、循环寿命长的特点，实现了电池和超级电容器在运行中的优势互补。储能系统由电力变换器控制协调充放电，保证了光伏电能的质量，提高了储能系统的整体性能，延长了储能系统的运行寿命，降低了光伏发电的成本。本文采用双BUCK-BOOST DC/DC变换器构成混合储能系统功率双向输电控制电路。该电路有序控制蓄电池和超级电容的充放电运行，实现光伏系统直流母线电压的高质量控制。
The power of photovoltaic (PV) system is greatly influenced by the natural environment factors, contributing to poor power supply reliability and voltage quality, while energy storage system can solve this problem effectively. Hybrid energy storage system combines the characteristics of the battery with larger capacity, medium power and fewer charge/ discharge times and the super capacitor with the characteristics of larger power density, smaller capacity and long cycling life, realizing complementary advantages of battery and super capacitor in operation. The storage system is controlled by power electrical converters to charge or discharge in harmony, which guarantees the quality of the PV energy, improves the overall performance of the energy storage system, extends the operation life of the energy storage system and reduces the costs of PV power. The paper adopts double BUCK- BOOST DC/DC converters to form a power bi-directional power transmission control circuit of hybrid energy storage system. The circuit controls the charging and discharging operation of battery and super capacitor orderly, and realizes the high-quality control of DC bus voltage of PV system.