基于磁链观测器的永磁同步电动机矢量控制系统

将改进型积分器作为永磁同步电动机(PMSM)的磁链观测环节,通过定子磁链观测实现对PMSM磁极位置的估计,结合矢量控制构成无位置传感器矢量控制系统.该改进型积分器消除了纯积分器带来的初值不准确、直流偏移等问题,又可以获得比低通滤波器更优的性能.仿真结果表明,PMSM无位置传感器矢量控制系统动静态性能好,抗干扰能力强.     

永磁同步电动机无位置传感器数字控制系统的设计

为了克服机械式位置传感器的诸多弊病,以无位置传感器永磁同步电动机在变频空调中的应用为背景,设计出一款无位嚣传感器基于滑模观测器的PMSM数字驱动控制系统,实现了永磁同步电动机在无位置传感器的情况下磁场定向控制驱动控制系统。     

基于UDUTUKF的无传感器PMSM直接转矩控制

针对永磁同步电机(PMSM)直接转矩控制系统(DTC),提出一种不需要计算平方根的Unscented卡尔曼滤波(UKF)算法,即UDUTUKF滤波算法,对定子磁链、转子速度和转子位置进行精确估计并得到电磁转矩估计值,建立了基于UDUTUKF的无传感器PMSM直接转矩闭环控制系统.对比了UDUTUKF和EKF的估计误差,仿真结果表明基于UDUTUKF的无传感器PMSM直接转矩闭环系统具有快速的转速和转矩响应特性.UDUTUKF的估计误差低于EKF的估计误差,且误差收敛速度比较快.     

SMO在无位置传感器PMSM驱动控制系统的应用

为了开发一种成本低、可靠性好、维护简单的无位置和速度传感器的控制方法,在分析永磁同步电动机PMSM的数学模型和滑模变结构控制基本理论的基础上,建立了基于滑模观测器SMO的PMSM无传感器驱动控制系统模型.以TMS320LF2407A DSP为核心构建了PMSM无传感器驱动控制系统,并进行了仿真和实验研究.结果表明,所提出滑模观测器能够准确地估算出电机的位置信息,并且系统具有较好的静、动态特性,从而验证了滑模观测器在无位置传感器PMSM驱动控制系统中应用的可行性和正确性.     

基于快速趋近率SMC的PMSM无速度传感器矢量控制研究

扩展卡尔曼滤波器(EKF)和脉振高频电压注入法在永磁同步电动机(PMSM)的无速度传感器矢量控制系统中有良好的估计效果,但是传统PI速度环在无速度传感器矢量控制系统中动态性能不佳.针对此情况,应用快速趋近率滑摸控制(SMC),并通过遗传算法确定其参数,在PMSM无速度传感器矢量控制系统中验证其估计效果,并且和传统PI以及指数趋近率SMC进行比较仿真.仿真结果表明,SMC具有更好的动态性能,且新型趋近率SMC速度环系统超调更小,动态性能更好.     

基于线性化扩展卡尔曼滤波器的空心杯永磁同步电机控制系统

分析了传统扩展卡尔曼滤波器(EKF)在空心杯永磁同步电机(PMSM)无位置传感器控制系统中的应用原理,构建了旋转坐标系下的EKF模型,提出了一种基于换元法的线性化算法.仿真和试验结果表明,该算法既能准确估计转子位置又能有效降低计算量,能很好地应用于空心杯PMSM的无位置传感器控制系统.     

无速度传感器的永磁同步电机滑模控制

基于模型参考自适应系统(MRAS)方法,完成了永磁同步电机(PMSM)无传感器控制中的速度估计,节约了成本,并提高了驱动系统的可靠性。在此基础上应用滑模控制理论,采用积分滑模面及滑模等效控制,对PMSM驱动系统速度跟踪控制进行了研究,提高了系统的鲁棒性和快速性。建立了PMSM驱动无传感器矢量控制系统的仿真模型,设计了速度滑模控制器。仿真结果验证了该方法的有效性,系统具有较好的动、静态特性。     

基于IRMCF341的永磁同步电机无传感器矢量控制系统设计

介绍了一种基于双核数字式IRMCF341芯片实现的永磁同步电机(PMSM)无传感器矢量控制系统设计,阐述了IRMCF341的内部结构及系统的软、硬件设计,给出了单电阻电流采样和重构的方法。试验证明,该设计方案性能优良,是新一代PMSM无传感器矢量控制系统的理想解决方案。     

基于扩展卡尔曼滤波的永磁同步电机无传感器矢量控制

为实现永磁同步电机(PMSM)的无传感器控利,引入扩展卡尔曼滤波对转子位置和转速进行估计,该算法通过测量电机端电压和定子电流在线估计转子位置和速度.为提高PMSM转速估计精度,以两相静止坐标系下考虑转动惯量的PMSM实际模型为递推估计对象,搭建转速、电流双闭环的无传感器矢量控制系统.仿真结果表明,系统状态估计精度较高、运行稳定、超调小、动静态性能良好.     

基于改进型滑模观测器的PMSM无传感器控制

为提高永磁同步电动机(PMSM)无传感器控制系统中电机转子位置及速度的估计精度,研究了一种带有串联低通滤波器(CLPF)及补偿环节的改进型滑模观测器(SMO)。建立了PMSM在静止坐标系下的动力学方程,介绍了传统的SMO,分析了反电动势估计值中高次谐波分量形成原因及其对估计结果的影响。为彻底滤除高次谐波分量,引入了串联LPF及其补偿环节。建立了基于改进型SMO的PMSM无传感器控制系统,并搭建了实验平台。实验结果表明,改进的滑模观测器可以有效滤除反电动势估计信号中的高次谐波分量,并提高转子位置及速度的估计精度。     

面装式永磁同步电机驱动系统无位置传感器控制

为了实现面装式永磁同步电机(SMPMSM)驱动系统的无位置传感器运行或位置传感器故障下的系统自适应容错运行,首先介绍基于微分代数的SMPMSM驱动系统转子位置和转速的获取方法,其次研究逆变器死区效应对转子位置估计精度的影响,给出基于纹波电流计算的逆变器死区补偿方案,提出基于微分代数且集成逆变器死区补偿的SMPMSM驱动系统无位置传感器控制方案,进而架构无位置传感器控制的SMPMSM驱动系统。通过系统建模、仿真和实验测试验证了所提出的SMPMSM驱动系统无位置传感器控制方案的合理性和有效性。     

基于滑模模型参考自适应系统观测器的永磁同步电机预测控制

针对一种三电平驱动的永磁同步电机控制系统,设计了一种无速度传感器有限集预测控制策略。首先,针对三电平逆变器驱动电路,采用有限集预测控制策略将其开关控制矢量看成一个有限集,在此有限集中搜索使目标函数最优的开关矢量,目标函数选择为输出误差电流,保证了电机定子电流波形的质量。其次,基于滑模模型参考自适应系统(MRAS)方法,利用电机本体的参考模型与电流模型的输出误差构造滑模面,设计了电机速度观测器,以改善位置和速度估计精度并提高系统的鲁棒性,并分析证明其稳定性。实验结果表明预测控制器较传统PID控制器能够提高定子电流波形质量,同时观测器能够较精确地估计永磁同步电机转子位置和速度,具有较好的鲁棒性。实现了对永磁同步电机的无传感器预测控制。     

Position and speed sensorless control system of permanent magnet synchronous motor with parameter identification

The model parameters of a permanent magnet synchronous motor (PMSM) are required for high‐performance control and a model‐based sensorless control. This paper proposes a sensorless control system of PMSM that does not need parametric information beforehand. The parameters of a PMSM drive system, including the inverter, are identified at standstill and under operating conditions. At first, the initial rotor position is estimated by a signal injection sensorless scheme in which the machine parameters are not required. After the initial position has been estimated, the resistance, including the on resistance of the IGBT, the voltage error caused by dead time in the inverter, and d‐axis and q‐axis inductances, are identified at standstill. After the motor starts by the signal injection sensorless control, the sensorless scheme changes to an extended EMF estimation scheme. The estimated parameters for the resistance, and daxis and q‐axis inductances are used in such sensorless control. The magnet flux‐linkage, which cannot be estimated at standstill, is identified under the sensorless operation at medium and high speeds. The effectiveness of the proposed method is verified by several experimental results. © 2007 Wiley Periodicals, Inc. Electr Eng Jpn, 160(2): 68–76, 2007; Published online in Wiley InterScience ( www.interscience.wiley.com ). DOI 10.1002/ eej.20548     

Mechanical Sensorless Drives of IPMSM With Online Parameter Identification

A mechanical sensorless drive system for an interior permanent-magnet synchronous motor, for which parameters including the inverter are identified, is proposed in this paper. The rotor position is estimated by a signal-injection sensorless scheme at standstill. The resistance, including the on-resistance of the insulated-gate bipolar transistor, the voltage error caused by the dead time of the inverter, and the$d$-axis and$q$-axis inductances are identified at standstill using the estimated position. After the motor starts by the signal-injection sensorless control, the sensorless scheme changes to a scheme based on the extended electromotive force estimation, which uses the identified parameters. The magnet flux linkage is also identified under the sensorless operation. The effectiveness of the proposed method is verified by several experimental results.     

基于T型逆变器的高速永磁同步电机无位置传感器控制系统

高速永磁同步电机绕组电感小、基波电流频率高,易产生严重的高频电流谐波。为抑制电流谐波,本文采用T型三电平逆变器供电,设计高速永磁同步电机无位置传感器控制器系统,通过仿真和实验对比两电平和三电平逆变器供电时的电流谐波,并考核滑模观测器无位置算法在高速运行时的稳定性。实验结果验证了本方案的可行性。     

Implementation of EKF based sensorless drive system using vector controlled PMSM fed by a matrix converter

A PMSM sensorless drive fed by a matrix converter has been designed to show that a drive system with high performance and efficiency can be constructed by combining the advantages of matrix converters, permanent magnet synchronous motors and sensorless control. Sensorless control of the motor is performed by using Extended Kalman Filter. The characteristics of matrix converter and performance of PMSM which are implemented by using a digital signal controller has been analyzed. Differences between the sensored and sensorless PMSM drive systems are also presented by considering the waveforms of the drive system. Promising results illustrated that EKF based sensorless control of matrix converter fed PMSM drive system with a good performance is achievable at medium and high speed operations.     

Sensorless Vector Control of Parallel-Connected Multiple Induction Motors Fed by a Single Inverter

KoukiMatsuse:Sensorlessvectorcontrolofparallel connectedmultipleinductionmotorsFedbyasingleinverter　　　InEq.(12) Φerand iesaredividedintode qeaxiscomponent,thenEq.(12)isexpressedby: T′=p M′{ ieqsedr- iedseqr Δ ieqsΔeqr-Δ iedsΔeqr}(17)     

感应电机SSFOC自适应速度辨识

基于电压模型转子磁通估计,提出了一种模型参考自适应系统,实现了无速度传感器磁场定向控制(Speed Sensorless Field-Oriented Control,简称SSFOC)逆变器感应电机的速度控制。通过自适应电流观测器估计转子速度,并以其估计值代替磁场定向控制和速度控制中的真实速度。为了准确估计转子速度,同时辨识了电机转子电阻。该自适应系统是超稳定系统。驱动系统可工作在一个较宽的速度范围内。实验验证了该方案的有效性。     

三电平异步电机的无速度传感器矢量控制系统研究

为解决在中高压领域无速度传感器矢量控制速度辨识差的缺点,基于三电平电压源型逆变器,提出了一种异步电机无速度传感器矢量控制方案.该方案采用间接矢量控制(IFOC)策略,以模型参考自适应(MRAS)方法构造速度辨识系统,并在新型三电平空间矢量脉宽调制(SVPWM)简化算法基础上,运用MATLAB/Simulink实现对三电平异步电机无速度传感器矢量控制系统的仿真研究.仿真结果表明,所述控制方法正确有效,该系统具有较好的稳态特性和动态响应能力.     

Speed-sensorless direct torque control of induction motors using anadaptive flux observer

This paper presents a new sensorless induction motor drive. The drive uses an adaptive flux observer for speed estimation and the discrete-time direct torque control technique for torque and stator flux control. The adaptive flux observer uses a mechanical model to improve the behavior during speed transients. The estimated stator flux of the adaptive observer is used in the discrete-time direct torque control method to provide fast torque response combined with torque-ripple-free operation over the whole speed range. The sensorless drive system is capable of working from very low speed to high speed and exhibits good dynamic and steady-state performance. The steady-state and dynamic performance of the proposed sensorless drive using simulation and experimental results are demonstrated