光伏并网逆变技术研究
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摘要
光伏电源作为一种可再生能源广泛应用。考虑到光伏板的非线性、并网同步运行等因素,研究了光伏系统的最大功率点跟踪、LCL滤波网络和并网同步等关键技术。研究最大功率跟踪算法,建立传递函数,提出了扰动观察算法;利用锁相原理建立了锁相环控制器,并分析了LCL网络及控制器模型。该系统能够实现最大功率点跟踪,且具有较好的稳定裕度和动态响应能力。
As a renewable energy, photovoltaic power supply is widely used. Considering the non-linearity of photovoltaic panels and synchronous operation of grid-connected, the key technologies of maximum power point tracking, LCL filtering network and grid-connected synchronization of photovoltaic system are studied. The maximum power tracking algorithm is studied, the transfer function is established, and the disturbance observation algorithm is proposed. The phase-locked loop controller is established by using the phase-locked principle, and the LCL network and controller model are analyzed. The system can achieve maximum power point tracking, and has good stability margin and dynamic response ability.
As a renewable energy, photovoltaic power supply is widely used. Considering the non-linearity of photovoltaic panels and synchronous operation of grid-connected, the key technologies of maximum power point tracking, LCL filtering network and grid-connected synchronization of photovoltaic system are studied. The maximum power tracking algorithm is studied, the transfer function is established, and the disturbance observation algorithm is proposed. The phase-locked loop controller is established by using the phase-locked principle, and the LCL network and controller model are analyzed. The system can achieve maximum power point tracking, and has good stability margin and dynamic response ability.
引文
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[3]刘卫亮,刘长良,林永君,等.反激式光伏微型逆变器并网电流逆控制方法[J].太阳能学报,2016,37(7):1783-1786.
[4]赵清林,许方玲,杨秋霞,等.基于LCL滤波器并网逆变器分裂电容控制研究[J].太阳能学报,2016,37(4):815-822.
[5]聂晓艺.单相LCL型光伏并网微逆变器的控制技术研究[D].南昌大学,2018.
[6]刘琳,陶顺,郑建辉,等.基于最优梯度的滞环比较光伏最大功率点跟踪算法[J].电网技术,2012,36(8):56-61.
[7]王恒,胥飞,宋治楷.新型单相光伏微型逆变器[J].电力学报,2016,31(4):303-307.
[2]周哲,王萍,薛利坤,等.高增益开关电容光伏微型逆变器[J].电工电能新技术,2015,34(6):64-69.
[3]刘卫亮,刘长良,林永君,等.反激式光伏微型逆变器并网电流逆控制方法[J].太阳能学报,2016,37(7):1783-1786.
[4]赵清林,许方玲,杨秋霞,等.基于LCL滤波器并网逆变器分裂电容控制研究[J].太阳能学报,2016,37(4):815-822.
[5]聂晓艺.单相LCL型光伏并网微逆变器的控制技术研究[D].南昌大学,2018.
[6]刘琳,陶顺,郑建辉,等.基于最优梯度的滞环比较光伏最大功率点跟踪算法[J].电网技术,2012,36(8):56-61.
[7]王恒,胥飞,宋治楷.新型单相光伏微型逆变器[J].电力学报,2016,31(4):303-307.