CAJ | 학술논문

永磁交流伺服驱动系统中高du／dt、di／dt在系统中寄生参数作用下感应出的电磁干扰，随着开关频率的不断提高，已逐渐影响到其在高精密场合下的可靠运行。电磁干扰（ Electromagnetic In?terference， EMI）模型的研究，是电磁干扰分析、预测及其抑制的基础。本文研究出一种永磁交流伺服驱动系统共模EMI噪声的预估方案：针对典型系统中的智能功率模块（ IPM ）装置，通过分析开关管状态切换过程中IPM桥臂中点电位的跳变，等效出共模噪声源模型；在阐述共模干扰传播路径的基础上，利用不同方法提取了传播通道中所涉及的各主要部件（变流器、屏蔽线缆及永磁同步电机）的高频参数；在150 kHz～30 MHz频段内，对其共模EMI噪声进行了实际测量，与仿真结果的对比验证了本文所建模型的正确性。根据样机实测EMI噪声，对于超出电磁兼容标准部分，提出了通过设计平面EMI滤波器滤除的方案，最终通过实验对该新型滤波器噪声抑制效果的有效性进行了验证。
영자교류사복구동계통중고du／dt、di／dt재계통중기생삼수작용하감응출적전자간우，수착개관빈솔적불단제고，이축점영향도기재고정밀장합하적가고운행。전자간우（ Electromagnetic In?terference， EMI）모형적연구，시전자간우분석、예측급기억제적기출。본문연구출일충영자교류사복구동계통공모EMI조성적예고방안：침대전형계통중적지능공솔모괴（ IPM ）장치，통과분석개관관상태절환과정중IPM교비중점전위적도변，등효출공모조성원모형；재천술공모간우전파로경적기출상，이용불동방법제취료전파통도중소섭급적각주요부건（변류기、병폐선람급영자동보전궤）적고빈삼수；재150 kHz～30 MHz빈단내，대기공모EMI조성진행료실제측량，여방진결과적대비험증료본문소건모형적정학성。근거양궤실측EMI조성，대우초출전자겸용표준부분，제출료통과설계평면EMI려파기려제적방안，최종통과실험대해신형려파기조성억제효과적유효성진행료험증。
With the constant increase of switching frequency in power electronic devices, the reliable operation of permanent AC servo drives working in sophisticated occasion is more and more easily influenced because of EMI produced by the mutual action of higher du/dt and di/dt with parasitic parameters. EMI modeling plays an impor?tant role in analyzing, predicting and suppressing EMI. Therefore, a method of predicting common mode EMI ( CM EMI) in permanent magnet AC servo drives is explored in this paper. As far as the IPM equipment in a typical sys?tem is concerned, its voltage of mid?leg jumps constantly. An equivalent model of CM EMI noise source is presen?ted by analyzing that phenomenon. The propagation path of CM EMI is stated, and then the high frequency parame?ters of the main parts ( including the power converter, shielded cable and Permanent Magnet Synchronous Motor (PMSM)) are extracted with different methods. In 150kHz~30MHz frequency range, actual measurement of CM EMI is completed. Compared with the simulation result, the validity of the proposed model is confirmed finally. The EMI noise of the prototype is measured. A method to suppress the noise is proposed, in which a planar EMI filter will be used. The final experimental measurement shows that this filter can greatly reduce the noise in this sys?tem.