• 한국철도학회논문집
• /
• 제12권3호
• /
• pp.335-341
• /
• 2009

차세대 고속 전철용 매입형 영구자석 전동기의 효율 및 매입된 자석의 감자를 방지하기 위해서 정확한 철손해석과 철손특성을 이해하는 것은 전동기 설계단계에서 매우 중요하다. 본 논문에서는 견인전동기의 약계자 제어 및 최대토크 제어와 같은 구동상황을 고려하여 운전영역별 철손해석을 수행하고 특성을 분석하고자 한다.

• 대한전기학회논문지:전기기기및에너지변환시스템부문B
• /
• 제54권2호
• /
• pp.81-87
• /
• 2005

The torque characteristics of permanent magnet(PM) motor is varied according to magnet width. In this paper, the design method of magnet and magnetic circuit is proposed in order to improve the torque of Interior Permanent Magnet Synchronous Motor(IPMSM). This paper presents the effects of pole arc ratio and salient pole ratio on the torque and torque ripple in the IPMSM with concentrated winding.

• 대한전기학회:학술대회논문집
• /
• 대한전기학회 2004년도 하계학술대회 논문집 B
• /
• pp.758-760
• /
• 2004

The torque characteristics of permanent magnet(PM) motor is varied according to magnet width. In this paper, the design method of magnet and magnetic circuit is proposed in order to improve the torque of Interior Permanent Magnet Synchronous Motor(IPMSM). This paper presents the effects of pole arc ratio and salient pole ratio on the torque and torque ripple in the IPMSM with concentrated winding.

• 전력전자학회논문지
• /
• 제22권1호
• /
• pp.60-66
• /
• 2017

This paper presents the design of a proportional-integral (PI)-proportional-derivative (PD) position controller without using a speed controller in motor drive systems. Unlike the existing PI-PD position controller design methods, the proposed controller is designed by reducing the entire position control system to a second-order transfer function. Thus, the gain values for the PI-PD position controller can be determined easily by a given bandwidth of the position controller. The PI-PD position controller designed by the proposed method is adopted for position control in an interior permanent magnet synchronous motor drive system to confirm the validity of the proposed design method. The effectiveness of the proposed design method is confirmed through experiments.

• 전기학회논문지
• /
• 제62권10호
• /
• pp.1403-1407
• /
• 2013

This paper presents the method to calculate the motor parameters considering skew in EPS Interior Permanent Magnet Synchronous Motor (IPMSM). The skew is applied to stator or rotor by general technology used for design of reducing noise and vibration in motor. The characteristics analysis of motor including the skew is mostly used by 3D Finite Element Analysis (FEA), though, this analysis is a very time-consuming to perform. Besides, The reliability lacks due to the considerable change of motor characteristics according to the number of elements in 3D FEA. However, analysis time and effort can be saved by characteristic analysis considering skew using 2D FEA. Therefore, in this paper, a quick and accurate method for the calculations of motor parameters considering skew is suggested. The proposed method is verified by the comparison of calculated and experimental results.

• Journal of Magnetics
• /
• 제16권1호
• /
• pp.74-76
• /
• 2011

Interior permanent-magnet synchronous motors (IPMSMs) produce both magnetic and reluctance torques. The reluctance torque is due to the difference between the d- and q-axis inductances based on the geometric rotor structure. The steady-state performance analysis and precise control of the IPMSMs greatly depend on the accurate determination of the parameters. The three essential parameters of the IPMSMs are the armature flux linkage of the permanent magnet, the d-axis inductance, and the q-axis inductance. In the basic design step of an IPMSM, the inductance parameters are very important for determining the motor characteristics, such as the input voltage, torque, and efficiency. Thus, it is very important to accurately estimate the values of the motor inductances. The inductance parameters of IPMSMs have nonlinear characteristics along the magnet size because the iron core is saturated by the magnet and armature reaction fluxes. In this study, the inductance parameters were calculated using both the magnetic-equivalent-circuit method and the finite-element method (FEM). Then the calculated parameters were compensated by the saturation coefficient function, which was also calculated via the magnetic-equivalent-circuit method and FEM.

• 대한전기학회:학술대회논문집
• /
• 대한전기학회 2009년도 제40회 하계학술대회
• /
• pp.869_870
• /
• 2009

This paper presents optimal design of tooth and yoke width for increasing torque density when designing concentrated winding Interior Permanent Magnet Synchronous Motor(IPMSM) which is used currently. In case of IPM, characteristic of motor chages according to saturation, thus design consib dering saturation should be done. This paper proposed method to decide tooth and yoke width using magnetic equivalent circuit with calculated magnetic resistance. This method provide less effort and time than FEM using optimal design when deciding tooth and yoke width. Proposed method and FEM are compared and verified.

• 대한전기학회:학술대회논문집
• /
• 대한전기학회 1993년도 하계학술대회 논문집 B
• /
• pp.968-970
• /
• 1993

In this paper, the loss components of IPMSM(Inteiror Permanent Magnet Synchronous Motor) is derived. To maximize the efficiency of the motor, a design method that optimizes the design variables is proposed Objective function consists of stator winding loss, core loss, and mechanical loss. Simulated annealing is used as the optimization method which is appropriate for finding the global minimum of nonlinear function with many local minima. Through the simulation of the motor characteristics, the prominence of the proposed design method is verified.

• 한국산업정보학회논문지
• /
• 제28권2호
• /
• pp.21-30
• /
• 2023

전기차 보급과 고성능화가 진행됨에 따라 높은 출력을 가지는 모터의 수요가 증가하고 고용량 IPMSM 생산을 위한 고용량 착자기의 중요성 또한 증가하고 있다. 착자에 중요한 착자 전류의 최댓값과 커패시터 방전시간은 착자요크의 회로정수에 의해 결정된다. 본 논문에서는 착자기 설계를 위한 착자요크의 회로정수 설계를 위하여 MATLAB SIMULINK를 활용한 착자 시스템의 해석을 진행하고 회로정수 설계를 위한 설계 절차를 제시한다. 그 결과 착자용량 5,000[V], 15,000[uF]에 따라 착자요크 파라미터는 0.015[ohm], 0.035[mH]로 도출하였다.

• 대한전기학회:학술대회논문집
• /
• 대한전기학회 2015년도 제46회 하계학술대회
• /
• pp.810-811
• /
• 2015

In this paper, we investigate the optimization design for a spoke type motor with the characteristics of high torque density and high-efficiency. This motor has a high output per unit volume. In order to reduce noise and vibration caused by a high cogging torque, optimization design of the rotor and stator have been conducted using both Response surface method (RSM) and Finite elements method (FEM). In this paper, we show the potential for this motor to efficiently replace existing interior permanent magnet synchronous motors (IPMSM) in a wide range of industries.