Modified direct torque control of permanent magnet. Motor cable 12 output chockes 12 dudtfilter 12 sine filter 12 motor limits for continuous operation 12 technical explanations adjustable drive systems with permanent magnet synchronous motors 12 special features of the calculation of a controlled drive system with pm synchronous motor what information must be contained in a motor inquiry. Modified direct torque control of permanent magnet synchronous. Direct torque control system and sensorless technique of. Sensored field oriented control of 3phase permanent. The article describes a new approach to control of permanent. Pdf comparison of basic direct torque control designs. Schematic of model predictive direct torque control mpdtc for a voltage source inverter dri ving a permanent magnet synchronous machine switching horizon can be considered as an. Permanent magnet synchronous motors pms are typically used for highperformance and highefficiency motor drives. Permanent magnet synchronous motor has the characteristics of small size, lightweight, high power factor and high efficiency, and is widely used in the field of robots and electric vehicles 1.
Tms320f2803x devices are part of the family of c2000 microcontrollers, which enables the costeffectivedesign of intelligent controllers for three phase motors. China permanent magnet synchronous motor, permanent magnet. The use of permanent magnet synchronous motor combined with direct torque control offers many opportunities such as quick, robust response and highperformance operations, which is desired for. The permanent magnet synchronous motor sensorless control. Permanent magnet synchronous motors for inverter operation. Direct torque control of permanent magnet synchronous motor. Analysis of direct torque control in permanent magnet synchronous. Secondly, the proposed twophase conduction mode for dtc of bldc motors is introduced in the constant torque region. The use of permanent magnet synchrono us motors pmsms combined with the direct torque control dtc scheme offers many opportunities to achieve this goal.
In order to solve this problem, a novel dtc scheme for the permanent magnet synchronous motor pmsm is proposed, which based on voltage space vector and. Direct torque control of permanent magnet synchronous machines synchronous machines with permanent magnets in the rotor, also referred to as pmsms, have a smaller inertia, higher efficiency and a higher torque to volume ratio compared to asynchronous machines. Recently several authors have proposed possible implementations of direct torque control for permanent magnet synchronous motors. Currentindependent torque control of permanentmagnet. Advanced torque control of permanent magnet synchronous. According to this theory, the variations in operation frequency are obtained by the algebraic calculations from the heylandossanna circular diagram based on the torque demand feedback. First of all, the classical direct torque control of permanent magnet synchronous motor pmsm with sinusoidal backemf is discussed in detail. Analysis of direct torque control in permanent magnet. Direct torque control of permanent magnet synchronous motor with reduced torque ripple and commutation frequency abstract. Pdf on may 4, 2016, shady m sadek and others published direct torque control of permanent magnet synchronous motors find, read and. How can i setup a permanent magnet synchronous motor on an.
Direct torque control of permanent magnet synchronous motors. Direct torque control of permanent magnet synchronous. These may increase the torque and flux ripples, acoustic noise, unbalanced threephase currents, while also reducing efficiency. Magnet synchronous motors manishbhardwaj abstract this application report presents a solution to control a permanent magnet synchronous motor pmsm using the tms320f2803x microcontrollers. Direct torque control of permanent magnet synchronous motors with nonsinusoidal backemf. Widespeed operation of direct torquecontrolled interior. Optimal torque control of permanent magnet synchronous mac hines using magnetic equivalent circuits wolfgang kemmetmu ller a, david faustner, andreas kugi a a automation and control institute, vienna university of tec hnology, gusshausstr. Direct torque control has several advantages such as fast transient response, less parameter dependence.
These types of imbalances and undesirable harmonic distortions cannot be controlled by using the conventional indirect torque control itc. In order to effectively achieve torque demand in electric vehicles evs, this paper presents a torque control strategy based on model predictive control mpc for permanent magnet synchronous motor pmsm driven by a twolevel threephase inverter. Direct torque control of permanent magnet synchronous motor zhang tao, liu baolian, zhang huiping faculty of electronic and electrical engineering, huaiyin institute of technology, huaian223003, p,r. However, in the dtc drive system of permanent magnet synchronous machine pmsm proposed a few years ago, there are many basic theoretical problems that. There are a large number of control methods for pmsm, which is selected depending on the construction of the electric motor and the scope. Finite element magnetic analysis of a permanent magnet synchronous motor using femm 4. Permanent magnet synchronous motor drives pmsm offers many.
This paper presents a comprehensive comparison between two speed control techniques for permanent magnet synchronous machine using vector control vc and comparison between direct torque control and vector control of a permanent magnet synchronous motor drive ieee conference publication. Unrivalled expertise with the world largest installed base. Optimal torque control of permanent magnet synchronous. This paper investigates the three designs and compares their performance. In order to solve the problem of large torque and flux ripple in the traditional direct torque control of permanent magnet synchronous motor, supertwisting sliding mode variable structure control strategy is adopted. Problems associated with the direct torque control of. Pdf model predictive direct torque control of permanent. Proven technology with more than 15 years of experience. Direct torque control dtc of ac drives is considered one of the most interesting high performance control techniques nowadays.
However, in the dtc drive system of permanent magnet synchronous machine pmsm proposed a few years ago, there are many basic theoretical problems that must be clarified. Direct torque control for permanent magnet synchronous. Highperformance motor control is characterized by smooth rotation over the entire speed range of the motor, full torque control at zero speed, and fast acceleration and deceleration. Lsrpmplsrpm permanent magnet motors are based on induction motor components offering reliability, robustness, efficiency, flexibility and express availability. Mpcbased torque control of permanent magnet synchronous. This book is an early treatment of ac induction and permanent magnet synchronous motors with emphasis on vector control using digital signal processors. Direct torque control dtc system of permanent magnet synchronous motor pmsm has large torque ripples and inconstant switching frequency, especially at low speed. A discrete mathematical model of a permanent magnet synchronous motor pmsm is established, then the fifthorder cubature kalman filter ckf algorithm is introduced. Basic pmsmdtc drive controller consists of flux and torque hysteresis comparators and switching table. This paper aims to enhance the performance of the direct torque control dtc of a permanent magnet synchronous motor drive. First of all, the classical direct torque control of permanent magnet synchronous motor pmsm with sinusoidal backemf is. Direct torque control of permanent magnet synchronous motor based on fuzzy logic dan sun, jian guozhu, and yikang he college ofelectrical engineering, zhejiang university hangzhou, zhejiang, 310027, p. The existing literature have proposed some methods to reduce torque and flux ripple. However, the conventional direct torque control based on the 60 degrees region used the position signal to select the proper space voltage vector, results in large torque and flux linkage ripple.
Toliyat this work presents the direct torque control dtc techniques, implemented in. Thereby this paper presents an extension to the work presented in 3, where a complete servo control. This motor control type is used for variable torque applications. Maximum efficiency per torque control of permanentmagnet. Direct torque control dtc is a method to control machine with utilizing torque and flux of motor controlled. Direct torque control of permanent magnet synchronous motor pmsm an approach by using space vector modulation svm. Pdf the modeling and simulation of a permanent magnet. Addressing that gap with information that has largely been disseminated only in journals and at conferences, permanent magnet synchronous and brushless dc motor drives is a longawaited comprehensive overview of power electronic converters for permanent magnet synchronous machines and control strategies for variablespeed operation. Abstract this paper describes an investigation of direct torque control dtc for permanent magnet synchronous motor.
Dariusz zyx zyxwv dsp based direct torque control of permanent magnet synchronous motor pmsm using space vector modulation dtcsvm. A thesis is a report that conveys the used theoretical approach and the experimental results on a specific problem in a specific area. Dtc, pmsm, hysteresis and nonhysteresis controllers, switching tables. Comparison of permanent magnet electric motor technology. A thesis could also develop a purely theoretical approach to a topic. The process of the building simulation system is discussed in detail. Direct torque control of permanent magnet synchronous motors dtcpmsm by eng. A permanent magnet synchronous motor and reluctance motor requires a control system for operating vfd or servo drive. Pdf dsp based direct torque control of permanent magnet. Direct torque control dtc is a method to control motor with utilizing torque and flux. Permanent magnets synchronous motor control theory kept constant, hence the name vf control. A centralized control strategy is established in the mpc framework to track the torque demand and reduce energy loss, by directly optimizing the. This paper describes an investigation of direct torque control dtc for permanent magnet synchronous motor pmsm drives. This method can achieve fast response and smooth torque production.
A currentindependent torque equation for the permanentmagnet synchronous motor pmsm aiming at directdrive servo applications is derived from a first. By this method it is preserved the principle of the conventional dtc regarding the decoupled torque and flux control, while providing more flexibility for the inverter voltage utilization, in order. This technical licentiate thesis deals with the design analysis of a permanent magnet synchronous motor for an electric vehicle. The main characteristics of these motors are the low. A tutorial in ac induction and permanent magnet synchronous motors, vector control with digital signal processors, fred flett, analog devices, 1994. Currentindependent torque control of permanentmagnet synchronous motors. Direct torque control dtc of ac drives is considered one of the most interesting high dynamic response motor control strategies nowadays. Permanent magnet synchronous motors pmsm are now replacing induction motors im in a variety of applications due to. The most common applications are servo drives in power ranges from a few watts to some kilowatts. Permanentmagnet synchronous motors pmsms are expected to generate a desired. China permanent magnet synchronous motor manufacturers select 2020 high quality permanent magnet synchronous motor products in best price from certified chinese permanent magnet manufacturers, synchronous motor suppliers, wholesalers and factory on. The dynamic performances of the driving system can be analyzed in the simulated results presented at the end of this paper. A novel torque controller with direct flux control for permanent. A new torque control system of permanent magnet synchronous motor andrey evstratov 1, valery zavyalov1, alexander grigoryev2,and irina semykina1,2 1 kuzbass state technical university, 650000 kemerovo, russia 2 tomsk polytechnic university, 634050 tomsk, russia abstract.
Direct torque control of permanent magnet synchronous motors 1 depenbrock, 1988 presented the direct self control theory. The direct torque control theory has achieved great success in the control of induction motors. This work presents the direct torque control dtc techniques, implemented in four and sixswitch inverter, for brushless dc bldc motors with nonsinusoidal backemf using two and threephase conduction modes. The doublelayer ipm rotor design is accounted for ipmsms requiring a wide torquespeed envelope. Direct torque control of permanent magnet synchronous motor pankaj zodape research scholar, electrical department, jabalpur engineering, college jec, jabalpur, india abstract. In conventional direct torque controlled dtc permanent magnet synchronous motor drive, there is usually undesired torque and flux ripple. Pdf direct torque control of permanent magnet synchronous.
Opened loop synchronous motor without permanent magnet. In this paper the effect of the voltage vector on the amplitude of stator flux, torque angle and torque of the permanent magnet synchronous motor pmsm direct torque control dtc drive is studied. Permanent magnet synchronous motor, direct torque control, pulse width modulation, fuzzy control. Proceedings of the 17th ieee international conference on electrical machines and systems, hangzhou, china, 2225 october 2014. In highperformance servo applications a rapid and direct torque control dtc is desired. Direct torque control for permanent magnet synchronous motors. Comparative evaluation of direct torque control strategies. In the literature, three different designs have been reported. This paper introduces the modeling of the direct torque control dtc system of permanent magnet synchronous motor based on matlabsimulink. Permanent magnet synchronous and brushless dc motor drives.
1096 250 1242 160 894 1408 293 1314 1514 433 232 539 1401 482 488 325 269 741 406 159 141 337 1264 213 1549 363 263 153 138 228 254 540 1149 1478 54 1309 553 11 719