Firstly, a mathematical model for pmsm is derived and the vector control is adopted. If you are using f28379d launchpad, you must build and download cpu1 and. This paper presents a sensorless speed control strategy for a permanentmagnet synchronous motor pmsm based on an adaptive nonlinear extended state observer anleso. Vector control of pm synchronous motor drive system using hysteresis current controller 1rajesh p. In this document, an sensorless field oriented control foc for pmsm utilizing the smo is proposed. Sensorless fieldoriented control of pmsm using sliding. The pmsm has been modeled in dq frame and the drive system is simulated using matlab simulink. The parameter estimation tool updates the motorparam variable in the matlab workspace with the estimated motor parameters. Although both smo strategies are able to track the reference speed of the rotor, chattering of estimated speed obtained from conventional smo is obviously larger than that from the improved smo. To reduce the chattering problem resulted from signum function in conventional sliding mode observer smo, a sensorless speed controller based on an improved smo is proposed for permanent magnet synchronous motor pmsm, where signum function is substituted for sigmoid function and the stability of the proposed smo is verified using the. Position sensorless vector control of pmsm drives based on smo abstract. Pdf position sensorless vector control of pmsm drives. To read this data into matlab, the text file requires some minor editing to make it executable from the matlab command line.
Based on an improved sliding mode observer for position. Smo can be utilized to identify the position of permanent magnet. This example shows a permanent magnet synchronous machine pmsm and inverter sized for use in a typical hybrid vehicle. Permanentmagnet synchronous machine drives intechopen. A rotor flux position of pmsm is estimated by using a sliding mode observer smo, firstly. Design and simulation of adaptive speed control for smo based sensorless pmsm drive yingshieh kung 1, nguyen vu quynh2, chungchun huang3 and liangchiao huang4 1,2department of electrical engineering, southern taiwan university, taiwan 2department of electrical engineering, lac hong university, vietnam 3,4 green energy and environment research laboratories, industrial technology. Sensorless model of permanent magnet synchronous motor. Modeling and simulation of a permanent magnet synchronous motor using matlab simulink. Matlab simulation of the proposed smo for sensorless operation in a.
Permanent magnet synchronous motor fieldoriented control. Choose a web site to get translated content where available and see local events and offers. If you obtain the motor parameters from the datasheet or other sources, update the motor parameters and inverter parameters in the model initialization script associated with the simulink models. The pmsm fieldoriented control block implements a fieldoriented control structure for a permanent magnet synchronous machine pmsm. Permanent magnet synchronous motor was modeled with the help of vector control technique and it was also made sensorless based on sliding model observer smo. Modeling of pmsm motor in simulink embedded matlab. Permanent magnet synchronous motor, vector control and pmsm. The same side and both side motors will control speed difference under. Design and simulink modelling of an adaptive gain variation. Saadaoui and others published position sensorless vector control of pmsm drives based on sliding mode observer find, read and cite all the research you need on researchgate. The simulink model for sensorless pmsm was provided with the help of sliding model observer smo. Vector control of permanent magnet synchronous motor pmsm. Modeling and simulation of a permanent magnet synchronous.
We have building a new sliding mode observer to estimate the rotor velocityposition from the back emf, in which a continuous function called sigmoid is applied instead. Field oriented control foc is a performant ac motor control strategy that decouples torque and flux by. Compared with the traditional electrically excited synchronous motor, pmsm. In section 4, permanent magnet synchronous motor drive system is briefly discussed with explanation of each blocks in.
Experimental study of low speed sensorless control of pmsm. The control subsystem uses a cascade control structure with two control loops, an outer loop for position and speed control and an inner loop for current control. Position sensorless vector control of pmsm drives based on smo. The pmsm single phase represents a singlephase permanent magnet synchronous motor pmsm, a type of dc motor that is useful for automation applications.
Pmsm was modeled in simulink with the help of model adaptive reference system. Sensorless vector control based on the sliding mode observer smo was adopted in speed control and torque control of pmsm. The following figure shows the permanent magnet synchronous motor fieldoriented control example model. Control of permanent magnet synchronous motor pmsm using texas instruments instaspinfoc motor control technology sept 12 14, 2016 content and agenda outline the first day is dedicated to sensored control of salient and nonsalient pmsm drives.
The test harness can be used to determine overall drive losses when operating at a given speed and torque. An adaptive nonlinear extended state observer for the. The work presents an adaptive pi controller for sensorless permanent synchronous motor pmsm drive system. The paper proposes a novel slidingmode observer smo algorithm with. Download the latest matlab and simulink product updates from the mathworks download center. The following matlab project contains the source code and matlab examples used for sliding model observer based permanent magnet synchronous motor. The position of rotor and speed can be estimated with out help of sensor technology. Purpose for vector control of permanent magnet synchronous motor pmsm requires motor speed.
An adaptive slidingmode observer with a tangent function. The following figure shows a permanent magnet synchronous motor fieldoriented control example model. For an interior pmsm ipmsm, this example computes the reference and currents using the mtpa method until the base speed. This example shows a test harness for a permanent magnet synchronous motor pmsm drive sized for use in a typical hybrid vehicle. Secondly, a rotor flux position is estimated by using a sliding mode observer smo. Fourthly, the simulation work is performed by matlab simulink and modelsim. Description this example shows how to use a closedloop fieldoriented control foc algorithm to regulate the speed and torque of a threephase permanent magnet synchronous motor pmsm. The pmsm drive is controlled using field oriented control and to control the machine mathematical model of pmsm is adopted. In this example, a closedloop fieldoriented control algorithm is used to regulate the speed and torque of a threephase permanent magnet synchronous motor pmsm. Permanent magnet synchronous motor pmsm dynamic model. Smo sensorless of permanent magnet synchronous motor file.
Fourthly, the simulation work is performed by matlabsimulink and modelsim. Each level can be simulated in psim and the corresponding control code can be automatically generated for a f28335 or. Design and simulation of adaptive speed control for smo. The vector controller pmsm block is similar to the fieldoriented controller block for induction machines, as it offers dcmachinelike performance for sinusoidal permanent magnet machines. For a surface pmsm spmsm, the example achieves mtpa operation by using a zero daxis reference current, until the base speed to operate the motor above the base speed, this example computes the reference and for mtpa and fieldweakening control, depending upon the. Control of permanent magnet synchronous motor pmsm. Making using model reference adaptive system the pmsm was modeled in simulink. Smo sensorless of permanent magnet synchronous motor. This example shows how to control the rotor position in a pmsm based electrical drive. Sliding model observer based permanent magnet synchronous. It works, but you should consider to label it better. The c2812 peripheral and dmc library blocks are used to control the speed and torque of a threephase permanent magnet synchronous machine from simpowersystems in a speedcontrolled closedloop fashion using the fieldoriented control technique. Based on your location, we recommend that you select. This is developed with the help of space vector pulse width modulation svpwm.
Access new product features, new product offerings, or free trials. Simulinkmodelsim cosimulation of sensorless pmsm speed. The simulation results are obtained using matlab simulink and compared for. The figure shows the topology of the singlephase pmsm drive.
Using offline data from foc control of pmsm, do sliding mode observer sensorless simulation. Threephase permanent magnet synchronous motor with quadrature encoder. The machine torque can be controlled irrespective of the stator flux. Download matlab, simulink, stateflow and other mathworks. Sensorless pmsm drive using sliding mode control smo to complement the ti app note sensorless field oriented control of 3phase permanent magnet synchronous motors using 2833x, psim provides examples that are structured to exactly match the build levels of the app note. Remember that it will be used for people who are seeing this for the first time, and some labels inside will make our lives easier. Permanent magnet synchronous machine current reference generator. Discretetime permanent magnet synchronous machine current controller with precontrol. The pmsm vectorcontroller model is for use with a threephase or fivephase permanent magnet synchronous machine. Based on simulinkmodelsim cosimulation technology, the design of a sensorless control ip intellectual property for pmsm permanent magnet synchronous motor drive is presented in this paper. Download scientific diagram matlab simulation of the proposed smo for sensorless. Here the inverter is connected directly to the vehicle battery, but often there is also a dcdc converter stage in between. Sensorless model of permanent magnet synchronous motor file.