本文分析了电压逆变器型有源滤波器系统的稳定性，提出了不用阻尼电阻抑制系统振荡的方法。
The stability of VSI active power filter systems is analyzed, and a method for suppressing transient oscillations in these systems without inserting damping resistors is proposed in this article.
为了避免LCL滤波器发生电流谐振，通常需要加入阻尼电阻，则导致损耗增加，降低系统效率。
To avoid the current resonance caused by LCL filter, damping resistance is usually needed, which increases wastage and reduces system efficiency.
滤波器参数对视线角加速度估计的消噪噪声和制导精度提高作用明显，一般宜采用低阻尼比的二阶低通滤波器。
The estimator parameters selected properly was benefit to the reducing of the noise and error. In general, the damp ratio of the second-order low-pass output filter should be small.
无阻尼输入滤波器可能使变换器系统不稳定或者振荡。
Undamped input filter may cause converter system unstable or oscillation.
因省去了以往无源阻尼控制算法中用以抑制系统谐振而增加的阻尼电阻，而从根源上消除了滤波器滤波性能、系统效率降低和发热等问题。
Since the damping resistor used in the passive damping control algorithm is omitted, the problems of filter performance degradation and system efficiency degradation are avoided.
依据输入滤波器输出阻抗极大值最小原则对基于阻尼补偿的直流发电机带恒功率负载系统输入滤波器参数进行了最优设计，给出了设计方法和流程。
Optimal design for input filter parameters in the system is accomplished to obtain the minimization of peak output impedance, and the design process is discussed in detail.
依据输入滤波器输出阻抗极大值最小原则对基于阻尼补偿的直流发电机带恒功率负载系统输入滤波器参数进行了最优设计，给出了设计方法和流程。
Optimal design for input filter parameters in the system is accomplished to obtain the minimization of peak output impedance, and the design process is discussed in detail.
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