CAJ | 학술논문

在并网逆变系统中，LCL型输出滤波器能够很好地抑制功率开关管高频开通与关断产生的大量高次谐波，因此备受关注。针对LCL型输出滤波器，阐述了滤波器电感L及电容c参数取值原则及设计步骤。由于LCL输出滤波器是三阶系统，易引起输出振荡，为增大阻尼，消除振荡，详细分析了一种基于电容电流反馈的有源阻尼法。最后通过仿真及一台以DSP2812为核心控制器件的1．5kVA单相并网逆变器装置对理论分析做了实验验证．实验结果表明了所提设计方法的有效性。
재병망역변계통중，LCL형수출려파기능구흔호지억제공솔개관관고빈개통여관단산생적대량고차해파，인차비수관주。침대LCL형수출려파기，천술료려파기전감L급전용c삼수취치원칙급설계보취。유우LCL수출려파기시삼계계통，역인기수출진탕，위증대조니，소제진탕，상세분석료일충기우전용전류반궤적유원조니법。최후통과방진급일태이DSP2812위핵심공제기건적1．5kVA단상병망역변기장치대이론분석주료실험험증．실험결과표명료소제설계방법적유효성。
Grid connected inverter with an LCL filter can attenuate high frequency harmonics generated by the high frequency switching on and off. The design criterion and calculation procedures of LCL were introduced in detail But the LCL filter is a third order system, which means it is easy to resonate. In order to increase the damping and eliminate the resonance of LCL filter, a method with filter capacitor current feedback was adopted. All the theoretical analysis was verified by experimental results on a single phase 1.5 KVA grid-connected inverters with an LCL filter.