CAJ | 학술논문

为了实现新能源系统中各并网运行设备的实时同步，采用了一种不需要进行滤波器设计且计算量小的正弦锁定器技术。本文通过虚拟同步发电机的控制思想模拟同步发电机的运行情况，控制其与电网的功率交换为0，实现对电网输入信号幅值、频率及其相位的同步。仿真分析可知，在输入信号发生阶跃突变时，由于虚拟惯性的存在其输出信号不发生瞬时突变；当输入电压信号中含有幅值为10％基波的2、3、5次谐波成分时，正弦锁定器的输出电压总谐波畸变率从增强型锁相环条件下的4．28％减小到0．01％，有效的验证了正弦锁定器的抗谐波干扰能力。
위료실현신능원계통중각병망운행설비적실시동보，채용료일충불수요진행려파기설계차계산량소적정현쇄정기기술。본문통과허의동보발전궤적공제사상모의동보발전궤적운행정황，공제기여전망적공솔교환위0，실현대전망수입신호폭치、빈솔급기상위적동보。방진분석가지，재수입신호발생계약돌변시，유우허의관성적존재기수출신호불발생순시돌변；당수입전압신호중함유폭치위10％기파적2、3、5차해파성분시，정현쇄정기적수출전압총해파기변솔종증강형쇄상배조건하적4．28％감소도0．01％，유효적험증료정현쇄정기적항해파간우능력。
In order to realize the real-time synchronization of various grid-connected operation equipment in new ener-gy system, this paper adopted a effective sinusoid-locked loop technique which do not need to design the filter and has the advantage of less calculation.This paper mimicked the operation of synchronous generators which is based on the control thinking of virtual synchronous generator, by controlling the power exchanged to be zero with the grid to get the synchronized signal of input amplitude, frequency and phase.Finally through the Matlab/Simulink simulation analy-sis, the sinusoid-locked loop technology has the characteristic of that output signal without instantaneous mutations be-cause of the existence of virtual inertia when the input signal step mutation;when the input voltage signal with 2nd, 3rd,5th order harmonic components which the amplitudes are 10%of the fundamental wave, and the output voltage total harmonic distortion rate decreased from 4 .28%which under the condition of enhanced phase-locked loop to 0 . 01%.The simulation results are given to effectively verify the capacity of resisting harmonic interference of sinusoid-locked loop technique.