본 논문은 동기 릴럭턴스 전동기의 q축 인덕턴스를 감소시켜 토크밀도와 역률을 개선하기 위해서 영구자석의 자로를 q축 자속의 반대 방향으로 삽입한 영구자석 매입형 동기 릴럭턴스 전동기의 특성해석을 하였다. 영구자석 매입형 동기 릴럭턴스 전동기(PMASynRM)의 유한요소해석에 있어서 인덕턴스 특성 및 토크특성 분석을 각각의 ...
본 논문은 동기 릴럭턴스 전동기의 q축 인덕턴스를 감소시켜 토크밀도와 역률을 개선하기 위해서 영구자석의 자로를 q축 자속의 반대 방향으로 삽입한 영구자석 매입형 동기 릴럭턴스 전동기의 특성해석을 하였다. 영구자석 매입형 동기 릴럭턴스 전동기(PMASynRM)의 유한요소해석에 있어서 인덕턴스 특성 및 토크특성 분석을 각각의 잔류 자속밀도 량에 따라 수행하였다. 전반적 토크특성을 해석하기 위해서는 입력은 최소 한주기 이상이 되어야 하며, 입력과 속도에 따르는 회전자의 회전조건을 고려해야만 한다. 따라서 제안된 수치기법에서는 이동 메쉬 개념의 요소 재분할법이 사용되었다. 영구자석 매입은 전자력과는 무관한 릴럭턴스 토크의 상승을 가져오며, 여기서는 등가철손 저항이 고려된 등가회로를 이용하여 일반 동기 릴럭턴스 전동기와의 특성을 비교분석하고, 최대효율 운전조건인 d축분 전류와 q축분 전류 성분비 및 부하각 차이에 대한 개념을 분석 도출하였다. 일반 동기 릴럭턴스 전동기와 본 논문에서 제안한 시작기 제작과 드라이버를 구성하고 벡터제어 운전실험을 각 부하별로 수행하여 기존 동기 릴럭턴스 전동기와 비교한 특성곡선을 도출하였고, 출력상승과 성능향상이 확보됨을 확인하였다.
본 논문은 동기 릴럭턴스 전동기의 q축 인덕턴스를 감소시켜 토크밀도와 역률을 개선하기 위해서 영구자석의 자로를 q축 자속의 반대 방향으로 삽입한 영구자석 매입형 동기 릴럭턴스 전동기의 특성해석을 하였다. 영구자석 매입형 동기 릴럭턴스 전동기(PMASynRM)의 유한요소해석에 있어서 인덕턴스 특성 및 토크특성 분석을 각각의 잔류 자속밀도 량에 따라 수행하였다. 전반적 토크특성을 해석하기 위해서는 입력은 최소 한주기 이상이 되어야 하며, 입력과 속도에 따르는 회전자의 회전조건을 고려해야만 한다. 따라서 제안된 수치기법에서는 이동 메쉬 개념의 요소 재분할법이 사용되었다. 영구자석 매입은 전자력과는 무관한 릴럭턴스 토크의 상승을 가져오며, 여기서는 등가철손 저항이 고려된 등가회로를 이용하여 일반 동기 릴럭턴스 전동기와의 특성을 비교분석하고, 최대효율 운전조건인 d축분 전류와 q축분 전류 성분비 및 부하각 차이에 대한 개념을 분석 도출하였다. 일반 동기 릴럭턴스 전동기와 본 논문에서 제안한 시작기 제작과 드라이버를 구성하고 벡터제어 운전실험을 각 부하별로 수행하여 기존 동기 릴럭턴스 전동기와 비교한 특성곡선을 도출하였고, 출력상승과 성능향상이 확보됨을 확인하였다.
The performance of a synchronous reluctance motor(SynRM) in terms of torque and power factor depends on the d and q-axis inductances L_(d) and L_(q) of the machine. The large difference(L_(d)－L_(q)) and ratio(L_(d)/L_(q)) of two inductances are good for the machine's properties. Therefore, considera...
The performance of a synchronous reluctance motor(SynRM) in terms of torque and power factor depends on the d and q-axis inductances L_(d) and L_(q) of the machine. The large difference(L_(d)－L_(q)) and ratio(L_(d)/L_(q)) of two inductances are good for the machine's properties. Therefore, considerable attention has been paid in the past to improve rotor design of SynRM. The torque density and power factor of SynRM can be greatly increased by adding a proper quantity of permanent magnet. It is called permanent magnet assisted synchronous reluctance motor(PMASynRM). However, when a proper quantity of permanent magnet is chosen to counteract the quadrature magneto motive force, rotor ribs must be saturated by means of an additional magnet quantity. The effects of saturation and iron losses are often important issues in the performance of PMASynRM. The saturation effect in the d-axis of the rotor is very different from that of the q-axis because the nature of the magnetic paths is different. In the case of d-axis excitation, the saturation is the combined effect of saturation in the stator yoke, stator teeth, and rotor ribs, and can reduce the L_(d) inductance by as much as 50%. Finite element method has the ability to model the complicated internal structure within a PMASynRM and to model magnetic saturation to a high degree of accuracy. In this paper, finite element analysis for a PMASynRM is presented and the characteristic analysis of inductance and torque is performed under the effect of saturation. Comparisons are given with inductance and torque characteristics of normal SynRM and those according to quantity of residual flux density (0.1T to 0.4T) in PMASynRM, respectively. The focus of this paper is characteristic analysis of d and q-axis inductances and torque according to magnetizing quantity of interior permanent magnet for PMASynRM. TMS320C31 DSP installed experimental devices and test machines are equipped and performance characteristics according to load are investigated. The d and q-axis current component ratios, load angles of a PMASynRM are investigated quantitatively on the basis of the proposed analysis method and the experimental test. Comparisons are given with output characteristic curves of normal SynRM and those according to the load in PMASynRM, respectively. And it is confirmed that the proposed model results in high output power performance.
The performance of a synchronous reluctance motor(SynRM) in terms of torque and power factor depends on the d and q-axis inductances L_(d) and L_(q) of the machine. The large difference(L_(d)－L_(q)) and ratio(L_(d)/L_(q)) of two inductances are good for the machine's properties. Therefore, considerable attention has been paid in the past to improve rotor design of SynRM. The torque density and power factor of SynRM can be greatly increased by adding a proper quantity of permanent magnet. It is called permanent magnet assisted synchronous reluctance motor(PMASynRM). However, when a proper quantity of permanent magnet is chosen to counteract the quadrature magneto motive force, rotor ribs must be saturated by means of an additional magnet quantity. The effects of saturation and iron losses are often important issues in the performance of PMASynRM. The saturation effect in the d-axis of the rotor is very different from that of the q-axis because the nature of the magnetic paths is different. In the case of d-axis excitation, the saturation is the combined effect of saturation in the stator yoke, stator teeth, and rotor ribs, and can reduce the L_(d) inductance by as much as 50%. Finite element method has the ability to model the complicated internal structure within a PMASynRM and to model magnetic saturation to a high degree of accuracy. In this paper, finite element analysis for a PMASynRM is presented and the characteristic analysis of inductance and torque is performed under the effect of saturation. Comparisons are given with inductance and torque characteristics of normal SynRM and those according to quantity of residual flux density (0.1T to 0.4T) in PMASynRM, respectively. The focus of this paper is characteristic analysis of d and q-axis inductances and torque according to magnetizing quantity of interior permanent magnet for PMASynRM. TMS320C31 DSP installed experimental devices and test machines are equipped and performance characteristics according to load are investigated. The d and q-axis current component ratios, load angles of a PMASynRM are investigated quantitatively on the basis of the proposed analysis method and the experimental test. Comparisons are given with output characteristic curves of normal SynRM and those according to the load in PMASynRM, respectively. And it is confirmed that the proposed model results in high output power performance.
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