CAJ | 학술논문

在两级式光伏发电系统中，采用基于前级 Boost 变换器的 MPPT 方法，可以使光伏电池达到最优状态，即最大限度的将太阳能转化为电能。后级网侧逆变器采用无差拍控制，使电网功率因数为1。通过两级式并网发电系统的仿真，可以实现最大功率点的跟踪，而且使并网电流与电网电压达到同频同相。因此，光伏模块的效率能够得到提高，逆变控制器的电流呈现高质量的正弦交流波形。通过 Matlab/Simulink 软件进行仿真，前后级都能实现相对独立的功能。仿真结果表明：此方案更有利于系统的模块化设计和集成。
재량급식광복발전계통중，채용기우전급 Boost 변환기적 MPPT 방법，가이사광복전지체도최우상태，즉최대한도적장태양능전화위전능。후급망측역변기채용무차박공제，사전망공솔인수위1。통과량급식병망발전계통적방진，가이실현최대공솔점적근종，이차사병망전류여전망전압체도동빈동상。인차，광복모괴적효솔능구득도제고，역변공제기적전류정현고질량적정현교류파형。통과 Matlab/Simulink 연건진행방진，전후급도능실현상대독립적공능。방진결과표명：차방안경유리우계통적모괴화설계화집성。
The photovoltaic cell can achieve the optimal state ,and the solar energy is converted into electrical energy suffi -ciently in the two-level PV power system by using the method of MPPT which is based on the front stage Boost converter . The back stage network side inverter adopts the method of deadbeat control and the grid power factor turns to be 1 .The maximum power point tracking is realized ,and the grid current has the same frequency and phase with the grid voltage through simulation .Therefore ,efficiency of the solar module is improved and the sine AC wave of the inverter control circuit is high-quality .Each converter can achieve relatively independent function in the two -level PV power system by the method of Matlab/Simulink software simulation .The simulation shows that it is very conducive to the modular design and integration of the system .