为提高开关电源的功率密度，提高开关电源的工作频率和减小开关电源的体积，但开关电源中寄生参数对电路的高频特性影响较大，设计了一种新型的同时消除寄生电感和寄生电容的“消除器”，以消除电容器的寄生电感和寄生电容的影响，对消除器寄生参数进行分析计算，并用 Pspice 软件对其电路进行仿真和实验验证，分析结果表明该设计能够减小滤波器电路的无源元件体积，且能较大幅度降低电路的寄生参数，电容器的高频性能得到明显改善。

To improve the switching power supply power density, improve operating frequency switching power supply and reduce the size of the switching power supply. But the larger impact of parasitic switching power supply cir﹣cuit for high-frequency characteristics,so the paper designed a new type of while eliminating the parasitic inductance and parasitic capacitance " eliminator" in order to eliminate the parasitic inductance of the capacitor and influence of parasitic capacitance,. The elimination of parasitic parameters analyzed and calculated, and its circuit simulation using Pspice software, analysis and experimental verification showed that the passive components designed to reduce the vol﹣ume of the filter circuit, and can more significant reduction circuit parasitic high-frequency capacitor performance has been significantly improved.

在版图设计过程中经常会遇到差分输出信号共模点存在偏差的问题。以带共模反馈(CMFB)结构的两级运算放大器为例,对版图分别提取寄生电容C+CC和寄生电阻R进行后仿,对比后仿结果,验证了共模偏差主要是由于寄生电阻的影响。根据后仿结果,采用Calibre软件对版图寄生电阻R进行筛选,找到了影响版图共模点偏差的主要走线,通过将该走线改为并联的形式来减小寄生电阻,使输出差分信号共模偏差由0.172 3 mV下降到15.559μV。

The common mode deviation of differential output signals is commonplace during the layout design process. A two-stage operational amplifier with common feed-back(CMFB)structure is taken for example,the parasitic capacitors C+CC and parasitic resistors R of the layout are extracted to have post-simulation,through comparison,it is proved that the common mode deviation is mainly effected by parasitic resistors. According to the result,the parasitic resistor R of layout is screened by Cali-bre,and the main line affects the common mode deviation is. The common mode deviation of the differential output signals is re-duced from 0.172 3 mV to 15.559 μV by decreasing the parasitic resistors through changing the lines into parallel connection.

IGBT(Insulated Gate Bipolar Transistor)阀是柔性直流换流系统的核心,建立实用准确的IGBT模型,对于模拟电磁骚扰源具有非常重要的意义。在IGBT等效电路基础上,采用复合模型法构造IGBT宽频等效电路模型,利用PSPICE软件的模型参数提取程序Parts分别提取功率MOSFET和BJT的模型参数。在此基础上,从IGBT的导电机理出发,用二极管的势垒电容表征其内部的压控寄生电容,建立其等效电路模型,并利用IGBT数据手册和计算相结合的方式提取寄生参数,仿真其稳态、动态特性。仿真结果和厂家给出的实测结果的对比,验证了该模型的正确性。

Insulated Gate Bipolar Transistor(IGBT) valve was the core of flexible DC converter system. The establish of practical and accurate IGBT model was very important significance Forgetting ready for simulating electromagnetic disturbance source. In order to construct IGBT wide-band equivalent circuit, compound model method was used. Parts program was used to extract the parameters of MOSFET and BJT respectively. On this basis, starting from the conductive mechanism of IGBT, the equivalent circuit model was built by using the internal voltage-control ed parasitic capacitance of potential barrier capacitance diode device, and the parasitic parameters were exacted by using the way of combining IGBT data sheet and calculation, and then the steady-state and dynamic characteristic were simulated. The contrasts between simulation results and measured results manufacturer were provided, the correctness of this model was verified.

反相绕组法是Boost变换器传导共模噪声抑制的一个有效技术，但绕组的寄生参数在高频段对噪声抑制能力有重要影响。通过对计及反相绕组寄生参数的Boost变换器共模等效模型的深入分析，明确寄生参数中的漏感、副边分布电容与补偿电容的串联谐振频率是影响噪声抑制能力的关键因素。优化寄生参数，提高谐振频率是扩大有效频率带宽，改善噪声抑制效果的有效措施。在此基础上，提出以反相1：1变压器代替反相绕组的新方法，该方法可以极大地减小漏感和副边分布电容，提高谐振频率。实验结果表明，反相变压器法较反相绕组法的有效频率带宽及高频段的共模噪声抑制能力得到明显提高。

Anti-phase winding is an effective method to suppress the CM EMI conducted noise in Boost converter. However the parasitic parameter of the anti-phase winding has critical effect on high frequency ranges. By the detail analysis of the CM EMI equivalent model of Boost converter considering the parasitic parameter of the anti-phase winding, the key factor is confirmed which is due to the serial resonant between the leakage inductance and stray capacitance of secondary winding plus the compensated balance capacitance. Optimizing the parasitic parameters will bring the benefit to increase the resonant frequency and expend the effective bandwidth in CM noise suppression. Based on the theoretical analysis, a novel method is also proposed which use an anti-phase 1:1 transformer, instead of anti-phase winding. With the new method the leakage inductance and the stray capacitance can be controlled to decrease greatly, resulting in great increase of effective bandwidth. The result of experiment s

固态功率控制器(SSPC)是集断路器线路保护功能和固态继电器可靠性于一体的智能开关装置,具有开关速度快、无触点、无电弧、可靠性高等特点。为此,以基于绝缘栅双极型晶体管(IGBT)反向串联结构为交流功率开关,研制了交流固态功率控制器。应用交流-直流真有效值转换芯片AD736,将传感器的输出直接转换为直流信号,省去了前端复杂的信号调理电路,简化了设计,并且有效地降低了寄生电容和杂散电容的影响。实验表明:设计的交流固态功率控制器原理样机满足测量精度要求,并验证了对负载反时限过流保护功能。

Solid state power controller ( SSPC) is a solid state device which is used to replace the relay’s role of switching and the breaker’s role of protection.It’s a switch matching with solid state distribution system.SSPC has the advantages of no noise, reacting quickly no electronic contact,no electronic arc,high reliability and so on.Therefore,an AC power switch based on insula-ted gate bipolar transistor(IGBT) at reverse tandem structure was presented.By replacing the complex signal processing circuit, AC-DC converter AD736 was used to convert capacitance sensor output into digital signal directly,simplify the electronics,and minimiz the interference of distributed and parasitic capacitance.Experiment result shows that the system meets the requirement of accuracy,and acquires good performance on the over-current protection of inverse-time.