Sensorless field oriented control of 3phase induction. Sliding mode observer based sensorless control of bldc motor. Research on sensorless control of pmsm based on sliding mode. This paper presents the details of starting the drive from. Since these methods do nonlinear state observer techniques for sensorless control of automotive pmsms, including load torque estimation and saliency bhangu bikramjit. The local observability of sensorless permanent magnet synchronous drives is studied in this paper. A novel sliding mode observersmo of pmsmpermanent magnetic synchronous motor was presented, which estimated the rotor position and angular velocity accurately. A theoretical background on field oriented motor control principle incremental build levels based on modular software blocks experimental results contents. Current sensorless model predictive torque control based. A special interest is given to the standstill operation. A luenberger state observer for simultaneous estimation of speed and rotor resistance in sensorless indirect stator flux orientation control of induction motor drive mabrouk jouili1, kamel jarray2, yassine koubaa1 and mohamed boussak3, senior member, ieee.
Speed sensorless field oriented control of induction machines. Sensorless kinesthetic teaching of robotic manipulators assisted by observer based force control abstract. Figure 3 shows the simulation diagram of natural observer based sensorless vector control with pi controller. An extended observerbased robust nonlinear speed sensorless. One of the applied techniques is luenberger observer. Another approach proposed in 7 10 to estimate the state variables in a pmsm is the use of sliding mode observer smo. Sensorless control for ipmsm based on adaptive super. This paper describes sensorless dtc of brushless dc bldc motor drive operating in constant torque region under two phase conduction mode to get instantaneous torque control. Dc motor model without luenberger observer 0 the controller that is used is sliding mode controller and the control law for this dc motor is given by. It is the abovementioned advantages of mptc that motivates this paper. Slidingmode observer based sensorless vector control of.
Speed sensorless observer based torque control of induction motor. Sliding mode observer based sensorless control of five phase pmsm in electric vehicle. Pdf irjetsensorless luenberger observer based sliding mode. Dec 16, 2019 a load current sensorless control strategy using an optimized observer is designed for a threephase online transformer based ups. Reducedorder sliding mode observerbased speed sensorless. Velocity control of dc motor is an important issue and a shorter settling time is desired. Pdf mras and luenberger observer based sensorless indirect. Sensorless kinesthetic teaching of robotic manipulators.
Secondorder slidingmode mras observerbased sensorless. Unfortunately the initialization and the optimal choice of covariance and gain matrix are delicate. Pdf control of a dc motor using sensorless observer. Performance analysis of sensorless controlled bldc motor. This paper presents a speed estimation scheme by combining a secondorder slidingmode observer smo with the model reference adaptive system mras in the sensorless vectorcontrolled. Pdf speed sensorless observer based torque control of. Flux observerbased sensorless fieldoriented control of. Position and speed sensorless control of pmsm drives based. Pdf sensorless control of permanent magnet synchronous motor has received a lot of research interest due to cost reduction and reliability.
The paper investigates various nonlinear observerbased rotor position estimation schemes for sensorless control of permanent magnet synchronous motors. Thus, developing its sensorless control for engineering applications is necessary. Speed sensorless control of dfig based mras observer. Designing a proper adaptive scheme based on fuzzylogic control flc to estimate linear speed. The main problem of the pmsm observerbased sensorless techniques is the. Pdf a novel approach to the design of backemf observer based. Pdf sensorless luenberger observer based sliding mode. The modelbased approach yields a much higher resolution of the rotor position. Drm099, sensorless pmsm vector control with a sliding. The system allows fast and precise speed tracking over a wide range of torque. Sliding mode observer based sensorless control of five phase. For pmsm drives with the fault of stator current sensor, a novel current sensorless mptc based on adaptive backstepping observer abo is proposed. Sensorless control for nonsinusoidal fivephase ipmsm. Mras and luenberger observer based sensorless indirect vector control of induction motors article pdf available in asian journal of information technology 75.
A simple feedback matrix design method is then applied to the observer according to the deadbeat. Control of a dc motor using sensorless observer based sliding mode control method. A luenberger state observer for simultaneous estimation of. Observerbased load current sensorless control strategy of. Verifying proposed flc fullorder luenberger observer using both numerical simulation and realtime hardwareintheloop hil test. Secondorder slidingmode mras observer based sensorless vector control of linear induction motor drives for mediumlow speed maglev applications abstract. Fullorder luenberger observer based on fuzzylogic control. Sensorless dc motor drive via optimal observerbased servo. Adaptive interconnected observerbased backstepping control. This paper presents a speed estimation scheme by combining a secondorder slidingmode observer smo with the model reference adaptive system mras in the sensorlessvectorcontrolled. The proposed smo substitutes a sigmoid function for the conventional signum function with a variable boundary layer which is changed according to the rotational velocity. Improved sliding mode observer based sensorless control for pmsm weixin kanga and hong li school of instrument science and optoelectronics engineering, beihang university, beijing 83, china. The voltage model in stator reference is the reference model, and the current model in estimated. The mean value theorem and sector nonlinearity approaches were implemented for a class of the lipchitz model of permanent magnet synchronous machine pmsm.
The transition from open loop acceleration to observer based sensorless operation is discussed and the stability of sensorless control against load disturbances is discussed. In this work, different sensorless control methods were developed for different speed regions. Sensorless luenberger observer based sliding mode control. Sensorless control of pmsm based on sliding mode observer. Next, an observer scheme that takes account of the full nonlinear dynamic characteristics of the motor, is considered. In this paper a reducedorder sliding mode observer based speed sensorless vector control of a double stator induction motor dsim is presented. Flux observerbased sensorless fieldoriented control of surface. Observer or modelbased emf methods use information about the motor current to determine rotor position and speed. A robust backstepping sensorless control for interior. This paper proposes an alternative design of a sensorless dc motor drive via optimal observer based servo control.
The voltage model in stator reference is the reference model, and the current model in estimated rotor reference is the adaptive. In modern day industry, robots are indispensable for achieving high production rates and competitiveness. Permanent magnet synchronous drives observability analysis. Sensorless vector control techniques for efficient motor control continues. Pdf improved sliding mode observer based sensorless control for. Among the solutions proposed are ways to eliminate the phase current sensors and use an observer for speed sensorless control. An extended observer basedcontroller applied to sensorless pmsm drive. The transition from open loop acceleration to observerbased sensorless operation is discussed and the stability of sensorless control against load disturbances. In this paper, an improved sliding mode observer smo is proposed to guarantee the position detection accuracy of the permanent magnet synchronous motor. The conventional reducedorder observer has large chattering on the speed and the torque. This work focuses on the problem of observerbased robust speed sensorless control of a 3phase permanent magnet synchronous motor pmsm. The methods based on back emf are simple but doesnt work well in low. Sensorless vector control techniques for efficient motor. Based on this, an observer based fuzzy double loop integral sliding mode control ofdlismc law, including internal loop and external loop, is derived.
In traditional sensorless control of the interior permanent magnet synchronous motors ipmsms for medium and high speed domains, a control strategy based on a slidingmode observer smo and phaselocked loop pll is widely applied. Even so, mptc has not yet been applied to current sensorless pmsm drive system. Improved sliding mode observer based sensorless control. Direct field oriented sensorless vector control scheme is used and the rotor angle is calculated from the estimated rotor fluxes. Sliding mode observer smo which is robust to parameter uncertainties is proposed to estimate the phasetophase trapezoidal backemf for the sensorless operation. Sensorless control of pmsm based on extended kalman filter. Sliding mode observer based sensorless control of bldc. The input persistence is related to the observability properties of system 34. Abstract motion sensorless control techniques of electrical drives are attracting more attention in different industries.
Pdf control of a dc motor using sensorless observer based. Permanent magnet synchronous drives observability analysis for motionsensorless control mohamad koteich, student member, ieee, abdelmalek maloum, gilles duc and guillaume sandou keywords sensorless control, synchronous motor, induction motor, ac machine. In the medium and highspeed regions, quasislidingmode observerbased position estimators were proposed to obtain rotor position information. Frus and kuo 4 first intilaized the milstone research in sensorless control. Sensorless dtc of an induction motor based on intelligent. Home applied mechanics and materials mechanical components and control engineering iii research on sensorless control of pmsm based on. Implementation of field oriented speed sensorless control of. Research on sensorless control of pmsm based on sliding mode observer p. Sw written in ccode using a few library algorithms available for the mc56f80 and mc56f8346 hw based on freescale universal motor control hw. A novel approach to the design of backemf observer based sensorless control of nonsalient pmsm. Article sensorless control for ipmsm based on adaptive super.
A sensorless velocity control system for dc motor is developed. The dynamic performance of the drive during homing and open loop acceleration under current control is presented and investigated. Sensorless kinesthetic teaching of robotic manipulators assisted by observerbased force control abstract. Observerbased sensorless control of permanent magnet. There are used two models in mras observer to estimate the linkage flux with relatively clean waveforms. These matrixes play a critical role in robustness of the efk. Oct 30, 2019 the focus of this paper is on the notion of an extended observer based on a state feedback controller. In order to further improve the performance of sliding. In this study, luenberger observer lo with a model reference adaptive system mras are associated for a sensorless vector control of an induction motor im. In the model reference adaptive system of ac motor, the stator resistance and rotor flux are assigned as state variables to build the reference model, and a fullorder flux observer is introduced to.
Position sensorless vector control of pmsm drives based on sliding mode observer conference paper pdf available december 2015 with 349 reads how we measure reads. Sensorless control of ac motor drives at low and zero frequency professor greg asher power electronics, machines and control group. In order to solve this problem, the sliding mode technique with smooth function is used. Sensorless pmsm vector control with a sliding mode observer for compressors using mc56f80, rev. An extended observer basedcontroller applied to sensorless. Sensorless control for ipmsm based on adaptive supertwisting. Sensorless field oriented control of 3phase induction motors using control law accelerator cla. Pdf observerbased sensorless speed control of pmsm. Real time implementation of adaptive sliding mode observer. Remaining driving range estimation for electric vehicles through information fusion method. In this paper, an improved sliding mode observer smo is. The model based approach yields a much higher resolution of the rotor position. Higher efficiency, lower heat generation, less vibration. Observer or model based emf methods use information about the motor current to determine rotor position and speed.
Pdf irjetsensorless luenberger observer based sliding. Nonlinear stateobserver techniques for sensorless control. In control theory, a state observer is a system that provides an estimate of the internal state of a given real system, from measurements of the input and output of the real system. Since these methods do nonlinear stateobserver techniques for sensorless control of automotive pmsms, including load torque estimation and saliency bhangu bikramjit. Slidingmode sensorless control has the advantage of strong robustness to parameter variations and external disturbances, as well as high dynamic performance, which is. In the medium and highspeed regions, quasislidingmode observer based position estimators were proposed to obtain rotor position information. Chatteringfree sliding mode observer for speed sensorless control. This paper proposes an alternative design of a sensorless dc motor drive via optimal observerbased servo control. The adaptive interconnected observer, developed in the sequel for the sensorless spmsm, is based on the interconnection between several observers satisfying some required properties, in particular the property of input persistence. Due to the limitations of hall sensing or encoder based control in terms of increased machine size, reduced reliability and higher noise, sensorless methods are preferred 5. Sliding mode observer based sensorless control of bldc motor under dtc scheme girija p k 1, prince a 2 pg student, dept.
Research on sensorless control of pmsm based on sliding mode observer. However, starting the drive from unknown initial position and from standstill are not sufficiently covered. Research on sensorless control of pmsm based on sliding. Secondorder slidingmode mras observerbased sensorless vector control of linear induction motor drives for mediumlow speed maglev applications abstract. A speedsensorless vector control method based on parameters identification with the fullorder adaptive state observer is proposed in this paper. Proceedings of the 14th international middle east power systems conference mepcon10, cairo university, egypt, december 1921, 2010, paper id 210. Sensorless luenberger observer based sliding mode control of. Pdf position sensorless vector control of pmsm drives. Verifying proposed flc fullorder luenberger observer using both numerical.
Adaptive interconnected observerbased backstepping. In order to indirectly estimate the rotor position, the. This paper develops a model reference adaptive system mras based observer for sensorless vector control of permanent magnet synchronous motor pmsm drives. Sensorless control of pmsm based on extended kalman filter zedong zheng 1,2. Speed sensorless field oriented control of induction. Speed sensorless field oriented control of induction machines using flux observer hisao kubota and kouki matsuse dept.
A load current sensorless control strategy using an optimized observer is designed for a threephase online transformerbased ups. Article sensorless control for ipmsm based on adaptive. It is typically computerimplemented, and provides the basis of many practical applications. A speed sensorless vector control method based on parameters identification with the fullorder adaptive state observer is proposed in this paper.
This paper presents the development and dsp implementation of the speed estimators for applications in sensorless drives with induction motor. It is shown by an extensive study that this adaptive observer is completely satisfactory. Sensorless control of permanent magnet synchronous motor has received a lot of research interest due to cost reduction and reliability improvement of the drive. The observer depends heavily on a model of the pmsm. The goal of sensorless fieldoriented control is to acquire the necessary highresolution rotor position estimate using only values that are readily sensed at the motor controller itself, namely voltage and current. Abstract sensorless control of permanent magnet synchronous motor has received a lot of research interest due to cost reduction and reliability improvement of the drive. Observerbased sensorless control of permanent magnet synchronous motor for electrical vehicle. Nonlinear stateobserver techniques for sensorless control of. Obtaining the observer gain matrix based on conventional stability theory. Several assistive algorithms, including an online observer parameter adaption scheme, a model. Implementation of field oriented speed sensorless control. Without the speed sensor, the extended luenberger observer is implemented to estimate the rotor speed of the dc motor in the presence of the disturbance torque.
A closedloop observer containing state feedback is constructed based on the improved state space model of the inverter circuit. Several methods based on the observer, as model reference adaptive system mras, extended kalman filter ekf, luenberger observer lo and sliding mode observer smo can be used to perform the sensorless control of electrical. A new strategy for ipmsm sensorless control based on an adaptive supertwisting slidingmode observer and improved phaselocked loop is proposed in this paper. Measurement and control the fullorder state observer the. The dependence to motor parameters and chattering effects that.
In this paper a reducedorder sliding mode observerbased speed sensorless vector control of a double stator induction motor dsim is presented. Ipmsms for medium and high speed domains, a control strategy based on a slidingmode observer smo and phaselocked loop pll is widely applied. An improved flux observer based on pll frequency estimator. Overview general principles problems of sensorless control at low speed. The transition from open loop acceleration to observerbased sensorless operation is discussed and the stability of sensorless control against load disturbances is discussed. Position sensorless control of pmsm basedonanovel sliding. This enables sinusoidal commutation or foc, fieldoriented control, with all its benefits. Sensorless control, synchronous motor, induction motor, ac machine. An improved flux observer based on pll frequency estimator for sensorless vector control of induction motors mihai comanescu, studentmember,ieee, and longya xu, fellow,ieee abstractthis paper presents an improved method of. In the first group, the rotor position can be estimated by using inductance variations due to the magnetic saturation andor saliency of pmsm. A novel sliding mode observer smo of pmsmpermanent magnetic synchronous motor was presented, which estimated the rotor position and angular velocity accurately. Improved sliding mode observer based sensorless control for pmsm. A simple feedback matrix design method is then applied to the observer according to the deadbeat control law, and the load current.
733 146 1109 45 1408 585 941 1028 581 341 775 894 1247 513 937 1131 443 1303 614 1123 1512 194 793 1321 738 585 1377 1222 1344