부하 전류에 따른 자기적 중성점 이동을 고려한 센서리스 구동용 영구자석 매입형 동기전동기(IPMSM)설계

최재완(Jae Wan Choi ),설현수(Hyun-soo Seol),정동훈(Dong-Hoon Jung),김승주(Seung-Joo Kim),이주(Ju Lee) 한국철도학회 2017 한국철도학회 학술발표대회논문집 Vol.2017 No.05

본 논문에서는 센서리스 구동용 영구자석 매입형 동기전동기(IPMSM)의 설계를 제안하였다. 센서리스 구동 시 영속 또는 저속에서는 역기전력이 매우 작기 때문에 인덕턴스에 기반한 초기 회전자 위치 추정을 한다. IPMSM은 역돌극성을 갖는 전동기로서 d축에서 인덕턴스가 최소인 특성을 갖는다. 하지만 부하 전류에 따라 자기포화가 발생하여 자기적 중성점이 이동한다면 인덕턴스의 최소 지점이 바뀌는 경우가 발생한다. 이는 인덕턴스에 기반을 둔 센서리스 제어 시 초기 회전자 위치 추정의 오류의 원인이 된다. 본 논문에서는 부하 변동에 따른 인덕턴스 위상각 변화를 줄이는 설계 방법을 제안한다. 유한 요소해석(FEA)을 통해 인덕턴스 Profile을 산출하여 제안된 방법의 타당성을 검증하였다. In this paper, We suggest Interior Permanent Magnet Synchronous Motor(IPMSM) design for sensorless drive based on inductance. When sensorless drive control, induced voltage is very small at zero speed or low speed. So It used to Rotor position estimation based on inductance. IPMSM have minimum inductance characteristic at the d-axis. however, if magnetic saturation lead to magnetic neutral point variation following the load current change, There is a change in minimum point of inductance. In this case, it can lead to failure of initial rotor position estimation. So, in this paper, We suggest IPMSM minimum inductance design at the d-axis by blocking magnetic neutral point change. After Figuring out Inductance Profile Based on the Finite Element Analysis(FEA), the result of proposed method were verified.

Hybrid Humvee 구동모터의 극수/슬롯수 조합에 따른 출력 특성 비교

이기덕(Kidoek Lee),김원호(Wonho Kim),이재준(Jaejun Lee),한정호(Jungho Han),정태철(Taechul Jeong),이주(Ju Lee) 한국자동차공학회 2010 한국자동차공학회 학술대회 및 전시회 Vol.2010 No.11

Interior permanent magnet synchronous motor(IPMSM) is usually applied to traction motor in the hybrid electric vehicle(HEV) due to its high power density and wide speed range. In this paper, Interior permanent magnet synchronous motor(IPMSM) for Hybrid Humvee is introduced. Four models with constraint condition is dealt with analysis of the characteristics according to the combinations of number of poles and slots. After analysis of the designed motor, the resulting values are compared with each other.

철도차량용 매입형 영구자석 동기전동기 기반 직접토크제어 기법의 성능 분석

한별,이준석,박영수,이교범 한국철도학회 2020 한국철도학회논문집 Vol.23 No.1

This paper presents performance analysis of a direct torque control (DTC) method for a traction system based on an interior permanent magnet synchronous motor (IPMSM). The IPMSM of the traction system has to be effectively controlled from constant torque region to constant power region because it must operate over the entire speed range and under all environmental conditions. Algorithms for the traction system can be divided into two categories: one is field oriented control (FOC), the other is DTC. In FOC, the currents of the d-q axis are controlled for maximum torque per ampere (MTPA) control in the constant torque region and for field weakening (FW) control in the constant power region. Different from FOC, DTC involves direct control of stator flux and torque, and so this method requires the calculation of reference stator flux and torque for MTPA and FW control. In this paper, performance analysis of IPMSM and power loss analysis of a power semiconductor between FOC and three different DTC algorithms over the entire speed range are presented. The effectiveness of the methods discussed in this paper is verified by simulation results.

PWM 인버터에 의한 전류 고조파를 고려한 매입형 영구자석 동기전동기(IPMSM)의 형상 최적화

노수성(Su Seong Noh),이창우(Changwoo Lee),장인권(In Gwun Jang) 대한기계학회 2019 대한기계학회 춘추학술대회 Vol.2019 No.11

In this paper, Pulse Width Modulation (PWM) inverter is designed and simulated with the motor. Since the PWM inverter generates the current harmonics, additional coreloss occurs into the rotor and stator. Using this co-simulation of the motor system, the shape optimization of the interior permanent magnet synchronous motor(IPMSM) is performed to minimize coreloss at the high speed. This paper suggests the optimized shape of the IPMSM minimizing the coreloss at high speed.

전기자동차의 연비향상을 위한 매입형 영구자석 동기전동기의 효율특성 분석

김종희,김기찬,이대동 한국융합학회 2018 한국융합학회논문지 Vol.9 No.4

전기자동차용 전동기는 운전모드에 따라 효율특성이 차이가 나기 때문에 저속 및 고속의 운전모드에서 고효율특성 을 평가하기 위한 연구는 매우 중요하다. 따라서 전기자동차 구동용 전동기의 고토크 및 고출력 밀도, 고효율특성을 변경할 수 있는 설계 방안이 필요하다. 본 논문에서는 매입형 영구자석 동기전동기의 고정자와 회전자의 직경비를 각각 0.62, 0.65, 0.68로 변경 설계하여 전 운전구간의 효율특성과 시내 및 고속도로 운전모드에서의 평균효율특성을 분석하였다. 전 운전구 간의 효율특성을 분석한 결과, 직경비가 증가할수록 고효율 구간이 저속 저토크 구간으로 이동하고, 직경비가 감소할수록 고효율 구간이 고속 저토크 부근으로 이동함을 확인하였다. 시내 및 고속도로 운전모드에서의 평균효율특성을 분석한 결과, 직경비 0.68 모델이 직경비 0.63 및 0.65 모델보다 평균효율이 높게 분석되었으며 시내 및 고속도로 주행모드에 적합함을 확인하였다. Electric motors for electric vehicles differ in efficiency characteristics depending on the operation modes, studies for evaluating high efficiency characteristics in low speed and high speed operation modes are very important. Therefore, it is necessary to design method that can change the high torque, high output density, and high efficiency characteristics of driving motors for electric vehicles. In this paper, the diameter ratio of stator and rotor for the interior permanent magnet synchronous motor is change of designed 0.62, 0.65, and 0.68, respectively, and the efficiency characteristics of the entire operation section, average efficiency characteristics of the city driving modes and express highway driving modes are analyzed. As a result of analyzing the efficiency characteristics of the entire operating section, it was confirmed that as the diameter ratio increases, the high efficiency section moves to the low speed and low torque section and the high efficiency section moves to the high speed and low torque neighborhood as the diameter ratio decreases. As a result of analyzing the average efficiency characteristics in the city driving modes and express highway driving modes, the average efficiency of 0.68 model is analyzed to be more efficient than the 0.63 and 0.65 model ratio, and it is confirmed that it is suitable for city driving modes and express highway driving modes.

집중권을 시행한 영구자석 매입형 동기전동기의 철손 저감

이형우(Hyung-Woo Lee),박찬배(Chan-Bae Park),이병송(Byung-Song Lee) 한국철도학회 2012 한국철도학회논문집 Vol.15 No.2

동기 PWM 방법을 이용한 철도차량용 매입형 영구자석 동기전동기 구동 방법

박영수,이준석,이교범 한국철도학회 2019 한국철도학회논문집 Vol.22 No.2

This paper presents a driving method for an interior permanent magnet synchronous motor (IPMSM) forrailroad cars using a synchronous PWM method. Since the fundamental frequency of an inverter is increased in thehigh-speed region of the IPMSM for railroad cars, it occurs that the number of switching pulses of the inverter decreasesduring one period of the fundamental waveform. In this case, the problem of an unbalanced output voltage can occurdue to the asynchronous nature of the fundamental and carrier waveform; a synchronous PWM method is used to overcomethe problem. In addition, flux weakening control is required to drive the IPMSM at higher speed than the basespeed of the IPMSM. However, if reference currents are changed for flux weakening control, the synchronous PWMmethod cannot be performed properly. In this paper, a driving method of the IPMSM for railroad cars using the synchronousPWM method in the flux weakening region is proposed. The effectiveness of the proposed method is verified bysimulation results.

매입형 영구자석 동기 전동기의 넓은 속도 영역에서 센서리스 운전을 위한 전환 알고리즘

강병규,정신명,임영설,이준석,이교범 한국철도학회 2018 한국철도학회논문집 Vol.21 No.5

This paper presents a transition algorithm for wide-speed-range operation of sensorless interior permanentmagnet synchronous motor (IPMSM) drives. For the low speed range, a continuous high frequency signal is injected tothe motor to extract the rotor position by signal processing method using the measure axis. For the middle and highspeed range, the rotor position information is estimated using a disturbance observer based on the extended back electro-motive-force (EEMF) model. The previous transition algorithm between two speed ranges is executed at a specificoperation point for wide-speed-range operation. However, this transition algorithm can cause speed overshoot duringload changes and change the speed transition point due to parameter variations of IPMSM. Therefore, this paper proposesa new and simple weighting function for stable transition operation between two speed ranges. Experiments arecarried out to show the effectiveness of the proposed transition algorithm.

매입형 영구자석 동기전동기의 열 변화를 고려한 감자 비교

양윤진(YunJin Yang),유용민(YongMin You) 한국자동차공학회 2024 한국자동차공학회 지회 학술대회 논문집 Vol.2024 No.4

NEV구동용 영구자석 매입형 동기전동기 특성해석

김영균(Young-kyoun Kim),이정종(Jung-Jeong Lee),유세현(Se-Hyun Rhyu),정인성(In-Soung Jung),장정철(Jeong-Cheol Jang) 한국자동차공학회 2011 한국자동차공학회 부문종합 학술대회 Vol.2011 No.5

The drive-train component of the electric vehicles is frequently using IPMSM because that this motor has the advantages of high power density and high efficiency. This paper presents high efficiency Interior Permanent Magnet Synchronous Motor (IPMSM) design and analysis for NEV having the operation speed of 2500rpm and 6000rpm.