CAJ | 학술논문

光伏发出的电压较小且不稳定,不能直接接入配电网,需要通过相应的控制装置来实现电压的升高和稳定。为此,设计了升压型 DC-DC 变换器,采用全控型器件绝缘栅双极型晶体管(insulated gate bipolar tran-sistor,IGBT)的控制电路,将最大功率点跟踪控制器的输出作为脉冲宽度调制(pulse width modulation,PWM)控制器的输入,PWM控制器输出占空比不同的矩形波控制 IGBT的导通时间,从而实现变换器升压和稳压的功能。仿真结果表明,所设计的DC-DC变换器实现了光伏发电的升压和稳压,验证了所提控制方法的有效性和可行性。
광복발출적전압교소차불은정,불능직접접입배전망,수요통과상응적공제장치래실현전압적승고화은정。위차,설계료승압형 DC-DC 변환기,채용전공형기건절연책쌍겁형정체관(insulated gate bipolar tran-sistor,IGBT)적공제전로,장최대공솔점근종공제기적수출작위맥충관도조제(pulse width modulation,PWM)공제기적수입,PWM공제기수출점공비불동적구형파공제 IGBT적도통시간,종이실현변환기승압화은압적공능。방진결과표명,소설계적DC-DC변환기실현료광복발전적승압화은압,험증료소제공제방법적유효성화가행성。
Photovoltaic voltage is less and instable that could not be directly connected with power distribution network while it requires to rely on relevant control devices to realize voltage rise and stability. Therefore,a kind of boost DC-DC convert-er was designed which used control circuit of full controlled insulated gate bipolar transistor (IGBT)and took output of max-imum power point tracking (MPPT)controller as input of pulse width modulation (PWM)controller. Square wave with dif-ferent output duty ratio of the PWM controller could control switch-on-time of IGBT and consequently realize functions of voltage rise and stability of the converter. Simulation results indicates that the designed DC-DC converter could realize volt-age rise and stability of photovoltaic power generation and verify effectiveness and feasibility of the control method.