CAJ | 학술논문

提出了一种基于相同线电压谐波频带的中性点漂移技术。该方法通过对载波相移角度和频率调制比等参数的优化,实现了3个线电压的高次谐波频带保持一致。与常规的故障功率单元处理方法相比,该方法能增加输出线电压的幅值,同时能减少其总谐波含量（Total Harmonic Distortion,THD）。通过仿真验证了该方法的有效性。
제출료일충기우상동선전압해파빈대적중성점표이기술。해방법통과대재파상이각도화빈솔조제비등삼수적우화,실현료3개선전압적고차해파빈대보지일치。여상규적고장공솔단원처리방법상비,해방법능증가수출선전압적폭치,동시능감소기총해파함량（Total Harmonic Distortion,THD）。통과방진험증료해방법적유효성。
Neutral point drifting technology based on the same harmonic distribution of line voltage is proposed.With the optimization of carrier phase-shifted angle and frequency modulation ratio,the harmonic distribution of three line voltages can be consistent.Comparing with the normal failure power unit treatment,the amplitude of output voltage can be increased and THD（Total Harmonic Distortion） can be decreased.Simulation results verify the validity of the proposed method.