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Direct Torque Control of a Synchronous Reluctance Motor Using the Finite Element Method 원문보기

KIEE international transactions on electrical machinery and energy conversion systems, v.5B no.2, 2005년, pp.173 - 180  

Lee Sang-Don (Dept. of Electrical Engineering, Wonju National College)

Abstract ▼ AI-Helper 아이콘AI-Helper

The construction of a Synchronous Reluctance Motor (SynRM) is simple and also highly economical because a stator from the existing AC motor can be used. Since the synchronous inductance in the Synchronous Reluctance Motor is an element that is proportional to torque, its exact value must be experime...

주제어

#direct torque control   #finite element method   #synchronous reluctance motor  

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제안 방법

  • A digital simulation was performed to confirm the propriety of the direct torque control using the proposed finite element method in this research. The manufactured synchronous reluctance motor was used for the model, and the values of all parameters are presented in Table 1.
  • In this paper, we have obtained the fast torque response for the high-performance operation of the variable speed driving system after proposing the direct torque control method of the synchronous reluctance motor using the inductance value by FEM. To confirm the fast response characteristic of the torque, we have compared the PI controller for the existed AC motor and the proposed PI controller in this paper.
  • Research to maximize the saliency ratio, measure the parameters such as inductance, and study design are in progress. The variables are the slot and air gap in the stator, and the rib and magnetic barrier of the rotor.
  • Therefore, the finite element method was used to find the inductance of the synchronous reluctance motor and direct torque control applied as suggested in this paper. To test the fast response characteristics, we compared the response characteristics between torque response charac­ teristics through PI control and through proposed direct torque control.
  • In this paper, we have obtained the fast torque response for the high-performance operation of the variable speed driving system after proposing the direct torque control method of the synchronous reluctance motor using the inductance value by FEM. To confirm the fast response characteristic of the torque, we have compared the PI controller for the existed AC motor and the proposed PI controller in this paper. The proposed PI controller has a greater number of toique ripples but can obtain a possible high response for servos.
  • Therefore, the finite element method was used to find the inductance of the synchronous reluctance motor and direct torque control applied as suggested in this paper. To test the fast response characteristics, we compared the response characteristics between torque response charac­ teristics through PI control and through proposed direct torque control.

이론/모형

  • The value of inductance influences the current and torque characteristics, so the method of measurement and analysis for the value was under heavy responsibility. In this paper, we have used the value of inductance that is found with the problem occurred by magnetic saturation in the analysis method and the finite element method directly [8]. In the quasi-steady state, the governing equation of finite element method from Maxwell's equation is expressed like Equation (5).
  • Moreover, the real torque according to the estimated torque was calculated with the inductance that was found by the current from the proposed finite element method. Fig.
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참고문헌 (8)

  1. ？I. Boldea, 'Reluctance Synchronous Machines and Drives,' Oxford University Press Inc., New York, 1996 

  2. ？R.E. Betz, 'Control of Synchronous Reluctance Machines' IEEE-lAS Annual Meeting, Detroit, pp. 456-462, Sept. 1991 

  3. ？T.A.Lipo, A.Vaqati ,L.Malesani, and T.Fukao, 'Synchronous Reluctance motors and drives a new alternative,' IEEE-lAS Annual Meeting, Tutorial, Oct. 1992 

  4. ？M. Jovanovic, 'Sensorless control of synchronous reluctance motor,' Ph.D. thesis, University of Newcastle, 1997 

  5. ？V.B.Honsinger, 'The inductance and of reluctance machines,' IEEE Transactions on Power Apparatus and Systems, vol PAS-90, no. 1, pp. 298-304, 1997 

    상세보기 crossref

  6. Peter Vas, 'Sensorless Vector and Direct Torque Control.' Oxford Press. 1998 

  7. ？M.R. Zolghadri, D.Diallo, D. Roye, 'Direct Torque Control System for Synchronous Machine,' EPE'97, Trondheim, pp. 3.694-3.699, 1997 

  8. ？Dal Ho Lim, 'Finite Element Method of Magnetic Field' Dong Myung Publishing Co., 1992 

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