信号注入法

为实现永磁同步电动机的低速无传感器控制，采用了高频信号注入法，同时将EKF引入到高频信号注入法的滤波环节当中，避免了传统滤波器带来的相位滞后等问题。

Meanwhile , EKF was introduced into the filtering aspects of the high-frequency signal injection method . This method avoided the phase lag of traditional filter .

小电流接地系统故障定位问题设计了一种改进型的信号注入法进行故障定位。

An improved signal injection method is designed .

最后，利用DSP相关软件，对转子初始位置估算方法进行模拟仿真，验证了高频电压信号注入法理论的正确性。

Finally , the paper simulated to the rotor initial point estimate method using DSP related tool and confirmed the accuracy of high frequency voltage signal method .

基于信号注入法的可控硅投切电容式消弧线圈

Arc suppression coil with thyristor series capacitors based on injecting current

基于信号注入法的电容电流测量仪研究

Research of Measurement Apparatus of Capacitance Current Based on Signal-injection Method

基于信号注入法的快速消弧线圈接地技术

Grounding through High Speed Arc Suppression Coil Technology Based on Signal Injection

基于信号注入法的电网对地电容电流测量装置的研究

Study on Measure Device for Capacitive Phase-to-earth Current in Distribution Network by Injecting Signals

基于脉冲信号注入法的配电网单相接地故障定位的研究

Fault Location Based on Pulse Signal Injection Method for Distribution Networks With Single Grounding Phase

信号注入法通用性较好，有其可取之处，但信号探测及处理方面宜作进一步完善。

The signal-input method has better universality , but the further improvement should be made in signal probing and processing .

对目前配网采用信号注入法检测单相接地故障的原理进行比较分析。

The principles of using signal injection method to detect single-phase earth fault of distribution network at present are compared and analyzed .

高频电压信号注入法适用于具有一定凸极率的电机。

High frequency voltage signal injection method is a novel sensorless technique which is suitable for the motor with a certain rate of salient .

而旋转高频电压信号注入法虽然系统比较复杂，却更易于实现，因此应用最广。

The rotating high frequency voltage signal injection method is more complicated , but is easier to be implemented , so it is used more widely .

为解决这一问题，本文在低频信号注入法的基础上提出了双变频测量法。

To solve the problem , this paper presents a new method on the base of low frequency injection , namely measurement basing on double different frequencies .

基于对高频信号注入法和模型参考自适应法转子位置自检测原理和特性的讨论，提出了一种包含零速在内的全速度范围内均能实现转子位置/速度准确检测和控制的复合方法。

A hybrid rotor position self-sensing approach was investigated in this paper by combining the high frequency signal injection method and model reference adaptive system ( MRAS ) method .

分析了低频信号注入法，并且针对其缺陷提出了基于小波变换的检测方案。

The paper analyzes the method of low frequency signal injection , which is usually used to detect DC system grounding fault , and advances the method based on wavelet transforms .

脉振高频电压信号注入法的系统结构简单，静、动态调速性能较好，但不容易调试；该文对王等方案进行了分析。

The fluctuating high frequency voltage signal injection method possesses simpler scheme configuration and better speed-adjustable performance both in static and dynamic , but the scheme is difficult to be regulated ;

直流系统接地故障检测中常用的低频信号注入法容易受到各支路电缆中存在的对地电容的影响。

The method of low frequency signal injection , which is usually used to detect DC system grounding fault , is easily influenced by the capacitors between ground and each branch .

其次，在分析凸极永磁同步电动机数学模型的基础上，阐述了采用高频电压信号注入法进行转子磁极位置估计的原理。

Secondly , based on the mathematical model of high frequency injection for salient pole PMSM , A high frequency signal injection method is used to estimate the rotor position of PMSM .

本文采用了一种常态下利用双不对称电桥实时监测直流系统绝缘的方法，解决了上述问题。目前广泛使用的低频信号注入法容易受到直流系统支路中存在的对地分布电容的影响。

A new method of monitoring real-timely for DC system insulation using double asymmetrical bridges in normal mode is adopted in this paper , and the shortcomings of symmetrical bridge are overcome .

现有直流供电系统的单相接地故障检测方法，如低频信号注入法，容易受到环网的影响，导致错误的检测结果。

The prevailing method of DC system grounding fault detection , such as low frequency injection method , is prone to be impacted by the loop net in power systems , and leads to wrong detection result .

分析了低频信号注入法的原理及存在的缺陷，针对其故障信号的特点，提出了基于小波变换的直流系统接地故障检测方案。

The principle and existing defects of low frequency signal injection method are analyzed . According to the characteristic of faulting signal , a detection scheme based on a wavelet transform for fault in DC system is proposed .

基于凸极跟踪的思想，详细讨论了旋转高频电压/电流信号注入法和脉振高频电压信号注入法在永磁同步电动机无位置传感器运行控制中的应用。

Secondly , based on the saliency tracking idea , two high frequency signal injection methods , i.e. the rotating high frequency voltage or current signal injection and fluctuating high frequency voltage signal injection , were discussed in this thesis .

分别介绍了这两类高频信号注入法的转子位置自检测原理，并应用这两类转子位置自检测方法建立了永磁同步电机无传感器矢量控制系统的仿真模型，进行了仿真比较。

The basic principles of rotor position self-sensing using these high frequency signal injection methods were presented and the simulation models for sensorless vector control systems of a PM synchronous motor were established using two proposed rotor position estimation methods .

针对直流系统接地故障检测中常用的低频信号注入法容易受到各支路电缆中存在的对地电容的影响这一问题，提出了利用小波分析实现故障信号特征的提取的方法。

To solve the problem that the method of low frequency signal injection used to detect DC system grounding fault is influenced by the capacitors between ground and each branch , wavelet analysis is used to extract the characteristic of signal .

在分析旋转高频信号注入法和脉振高频信号注入法原理的基础上，提出了在两种不同高频信号激励下定子电流具有统一的模型。

On the basis of analysis the principle of the rotating high frequency signal injection method and pulsating high frequency signal injection method , the viewpoint that stator currents under the two different high frequency signal incentive have a unified model was proposed .

对脉振高频电压信号注入法估计电机转速进行了实验验证，实验结果证明了这种方法适合于低速运行，对电机参数的变化不敏感，鲁棒性强。

The fluctuating high frequency signal injection method to estimate speed is proved successful through experiments . The experimental results prove that this method is suitable to the low speed operation of motors and has less sensitivity to the variations of machine parameters .

针对传统旋转高频信号注入法中信号处理精度低、延时时间长及过程复杂等缺陷，提出一种基于有限冲激响应优化滤波的改进型旋转高频信号注入法。

Aiming at the defects of low precision , long delay and complicated process in the signal processing of traditional rotating high frequency signal injection method , an improved rotation high frequency signal injection method based on finite impulse response filter is proposed .

针对直流系统中环网对接地故障检测的影响，在传统低频信号注入法的基础上提出了一种新的基于小波熵理论的直流系统环网接地故障检测方法。

According to the influence of loop net on DC system fault detection , a new method based on wavelet entropy theory to detect grounding fault in loop net of DC power system is proposed in view of traditional low frequency signal injection method .

针对基波模型控制策略在低速和零速存在的问题，采用高频脉振信号注入法，并设计同步轴高通滤波器用于电流基波分量的提取。

For the problems that appear when the fundamental wave model control strategy works in the low speed and zero speed , the fluctuating high frequency signal injection method is used to build the synchronous shaft high-pass filter , which can extract the fundamental current component from stator current .

研究了转子位移无传感器检测的两种方法，即小信号注入测试法和差动变压器测试法。

Two methods , which are called as a small test-signal injection and the differential transformer , are studied in order to detect the rotor displacement without sensor .