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논문 기본 정보

자료유형
학술저널
저자정보
저널정보
전력전자학회 JOURNAL OF POWER ELECTRONICS JOURNAL OF POWER ELECTRONICS Vol.1 No.2
발행연도
2001.10
수록면
117 - 126 (10page)

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초록· 키워드

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A synchronous motor (SM) with q-axis special field winding of which the q-axis field-current compensates and cancels armature reaction can be driven at unity power factor under the conditions of transient state as well as steady state. The motor operates in high efficiency in all conditions. However, in order to obtain maximum performance of the motor, it is required that the time constant of armature circuit corresponds to that of q-axis field circuit. Inverse LQ (ILQ) design method on a basis of the pole assignment is suitable for this problem- (1) The time constants of the output responses can be designed for desired specifications, (2) Relations between feedback gains and response of closed loop system are very clear and (3) Optimal solutions can be given by simple procedure of ILQ method without solving the Riccati's equation, compared to the usual LQ design method Accordingly, the ILQ method can make the responses of armature current and q-axis field-current correspond In this paper, it is proved by numerical simulations and experiments that the ILQ method is very effective for optimal regulator design of this plant and realizes a high-performance motor with unity power factor and high efficiency.

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ABSTRACT

1.Introduction

2.Basic equations of PM SM with q-axis field winding

3.Unity instantaneous power-factor and torque control

4.Design of an optimal control system

5.Numerical simulations and experiments

6.Conclusions

Acknowledgments

Appendix

References

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