CAJ | 학술논문

阐述了单相光伏并网系统主电路的组成及控制系统的设计。针对光伏电池非线性强的缺点,将模糊控制方法应用到光伏系统的M PPT控制,实现系统快速响应外部环境变化。同时,逆变系统采用电压外环-电流内环的双闭环控制策略,能控制输出电流波形,提高系统动态响应速度,实现电流的快速检测,抑制电网电压扰动,确保逆变器输出功率因数趋于1。实验结果验证了设计的合理性和正确性。
천술료단상광복병망계통주전로적조성급공제계통적설계。침대광복전지비선성강적결점,장모호공제방법응용도광복계통적M PPT공제,실현계통쾌속향응외부배경변화。동시,역변계통채용전압외배-전류내배적쌍폐배공제책략,능공제수출전류파형,제고계통동태향응속도,실현전류적쾌속검측,억제전망전압우동,학보역변기수출공솔인수추우1。실험결과험증료설계적합이성화정학성。
The components of main circuit of single-phase photovoltaic grid-connected system are discussed and the control system is designed.Considering the strong non-linearity of photovoltaic cells,fuzzy control method is introduced for MPPT of the photovoltaic generation system.The system responds rapidly by using fuzzy control method when the external environment changes quickly.The outer ring voltage-current inner ring of the double-loop control strategy is used to realize the control of the current waveform for the photovoltaic inverter system.The system can run with good dynamic performance and inhibit perturbation of grid voltage.The output power factor of the photovoltaic inverter is close to 1 by the double-loop control strategy.The experimental results prove the rationality and correctness of the design.