The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
An efficiency optimization control strategy of the direct torque controlled interior permanent magnet synchronous motors is proposed. Firstly, the mathematical model of the IPMSM is established in the rotor frame considering iron losses. Secondly, the function relationship between the power losses and the output torque, speed and stator flux is analyzed, and the computational formula of the stator...
In this paper, Genetic Algorithm (GA) based on Building Block (BB) identification is applied to optimal design of Interior Permanent Magnet Synchronous Motor (IPMSM). BBs on IPMSM design variables are identified using the proposed algorithm based on nonlinearity check by perturbation. Consequently, BB information regarding the design of IPMSM is proposed and the performance of the proposed algorithm...
This paper describes a novel motor-drive system which includes the multi-phase open-end windings for an individual winding current control in order to realize the variable parameters. Each armature winding is connected with the insulated full-bridge inverter for the arbitrary excitation waveform. The proposed construction can extend the operating area and can distribute the high efficiency area. Furthermore,...
This paper presents a comparative study between field oriented control (FOC) and direct torque control (DTC), two most popular control strategies for inverter fed interior permanent magnet synchronous motor (IPMSM) drives. The comparison is done in four switch three phase (FSTP) inverter scheme instead of six switch three phase (SSTP) inverter scheme. The FSTP inverter scheme is better than SSTP inverter...
This paper proposes an interior permanent magnet synchronous motor drive system based on direct torque control of the overmodulation region of an inverter. It is important to operate in the overmodulation region to maximize the motor output power. An overmodulation pulse width modulation (PWM) drive and a square-wave drive are used for high-power operation because of the high voltage utilization of...
This paper aims at the following control schemes of the IPM-SM drive, (i) A closed-loop direct torque control of an IPM-SM for variable speed drive with speed/position sensor, (ii) A speed and position sensor-less direct torque control scheme of the IPM-SM drive. To achieve closed loop control of torque and stator flux linkage, two PI controllers has been used; whereas to generate reference voltage...
Based on the analysis of relationship among the power, torque and stator flux-linkage, the efficiency optimization of the interior permanent magnet synchronous motor drive system for urban rail traction based on instantaneous power control is presented during the transiently operating process of accelerating and braking region. The goal of the method is to control reactive power as zero and improve...
The design methodology using the newly adopted synthetic flux linkage for Interior Permanent Magnet Synchronous Motor(IPMSM) with multi-layered PM has been proposed. In addition, cross-magnetization between d-q axis in IPMSM is taken into account, which can be identified numerically and experimentally. It is validated with the experimental ones for the purposely-built prototype, and their further...
To solve the problems of large flux and torque ripples and inconstant switching frequency in direct torque control (DTC) for permanent magnet synchronous motors (PMSM) and to eliminate speed sensor since it deteriorates system reliability and increases the cost of system, a novel speed sensorless DTC method based on space vector modulation (SVM) is proposed in this paper. This method is based on the...
Summary form of only given: New design methodology using the numerically identified the synthetic flux linkages for Interior Permanent Magnet Synchronous Motor(IPMSM) with multi-layered PMs is proposed. Furthermore, the cross-magnetization between the d-q axis in IPMSM mainly due to the magnetic saturation is investigated via the adopted synthetic flux linkages. The proposed design methodology using...
This paper investigates the change of maximum power of an Interior Permanent Magnet Synchronous Motor (IPMSM) according to the rotor rib without the alteration of design factors related to the motor. As increasing the thickness of a rotor rib, it relieves stress concentration when the rotor rotates at high speed. However, the amount of leakage flux which comes from the PM makes the performance reduction...
This paper proposes a new speed sensorless direct torque and flux controlled interior permanent magnet synchronous motor (IPMSM) drive. Closed-loop control of both the torque and stator flux linkage are achieved by using two proportional-integral (PI) controllers. The reference voltage vectors are generated by a SVM unit. The drive uses an adaptive sliding mode observer for joint stator flux and rotor...
This paper presents a comprehensive analysis of the direct torque and flux control (DTFC) scheme for interior permanent magnet synchronous motor (IPMSM) drives. Closed-loop regulation of the torque and stator flux linkage are achieved via two independent proportional-integral (PI) controllers. The reference voltage vectors are generated by a space vector modulation (SVM) unit. A mathematical analysis...
This paper proposes a new speed sensorless direct torque and flux controlled interior permanent magnet synchronous motor (IPMSM) drive. Closed-loop control of both the torque and stator flux linkage are achieved by using two proportional-integral (PI) controllers. The reference voltage vectors are generated by a space vector modulation (SVM) unit. The drive uses an adaptive sliding mode observer for...
This paper introduces a new air-gap structure, the slanted air-gap, for increasing the speed limit of an interior permanent magnet synchronous motor (IPMSM) for application in a hybrid electric vehicle. This unique slanted air-gap is intended to maximize the ratio of the back-emf of a machine that is controllable by brushless field excitation (BFE). The BFE structure offers high torque per ampere...
This paper introduces a new method for calculating the power factor and output torque by considering the cross saturation between direct-axis (d-axis) and quadrature-axis (q-axis) of an interior permanent magnet synchronous motor (IPMSM). The conventional two-axis IPMSM model is modified to include the cross saturation effect by adding the cross-coupled inductance terms. This paper also contains the...
This paper discusses the relationship between the amplitude of stator flux linkage and the torque of interior permanent magnet synchronous motor (IPMSM). In order to change the load angle and the torque accordingly, the amplitude of stator flux linkage should be kept in restricted range. It also explains how to control the amplitude of stator flux linkage to get maximum torque by using direct torque...
This paper presents a comprehensive analysis of the direct torque and flux control (DTFC) scheme for interior permanent magnet synchronous motor (IPMSM) drives. Closed-loop regulation of the torque and stator flux linkage are achieved via two independent proportional-integral (PI) controllers. The reference voltage vectors are generated by a space vector modulation (SVM) unit. A mathematical analysis...
This paper presents a novel direct torque and flux controlled interior permanent magnet synchronous motor (IPMSM) drive using an adaptive backstepping technique. Closed-loop regulation of the speed, torque and stator flux linkage are achieved by a nonlinear controller. Using Lyapunov analysis, the stability of the controller is guaranteed. The reference voltage vectors are generated by a SVM unit,...
This paper investigates the application of an Extended Kalman Filter (EKF) for closed-loop flux, torque and speed estimation of a direct torque controlled (DTC) IPMSM drive over a wide speed range. The EKF provides a recursive optimum state estimation for IPMSMs using terminal signals that may be polluted by noise. Furthermore, the EKF has robustness to parameter variations, disturbance rejection...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.