Query: Brushless Synchronous Motor

title: Electromagnetic design and dynamic performance study of electrically excited brushless synchronous motor
abstract: Electrically excited brushless synchronous motor is a new AC motor, which has a great difference with ordinary AC motor in electromagnetic design. Based on the electromagnetic relation of electrically excited brushless synchronous machine, in this paper the design method is studied and the electromagnetic field of electrically excited brushless synchronous machine is analyzed by finite element analysis software. Start up performance, pull in synchronization and dynamic performances when suddenly loaded of the motor are calculated. The results provide the theoretical guidance for the optimal design and control of this motor.

title: Experimental test on a fuel cell powered brushless synchronous motor for automotive applications
abstract: In this paper, a fuel cell powered motor emulator is proposed. The MATLAB/Simulink model including the fuel cell stack, the motor and drive models is described. The Urban Driving Cycle test is performed in MATLAB environment. Effective operating conditions of the whole fuel cell powered motor are accurately emulated according to actual regulations in force. The emulated current profile is used for experimental tests on a 5kW Nuvera PowerFlow stack. Thanks to the proposed approach, the motor and inverter drives are accurately emulated and the provided test bench is used to evaluate performances of the stack under test for automotive applications. Simulation and experimental results are compared to test the accuracy of the proposed emulator. Experimental results are shown and performance evaluation is carried out.

title: Test bench for synchronous brushless motor

title: One kind of exciting integrated brushless synchronous motor
abstract: Ben Fa Ming Shi Li Ci Ji Cheng Shi Wu Shua Tong Bu Dian Ji ,Qi Jie Gou Bao Gua Ding Zi He Zhuan Zi Er Bu Fen ,Qi Ding Zi Bu Fen Bao Gua Ding Zi Tie Xin ,Dian Shu Rao Zu ,Ding Zi Li Ci Rao Zu ,Duan Gai ,Ji Ke ,Zhuan Zi Bu Fen Bao Gua Zhuan Zi Tie Xin Zhuan Zhou Zhuan Zi De Li Ci Rao Zu He Zheng Liu Er Ji Guan You Dian :1)Sheng Qu Liao You Shua Dian Ji Li Ci Suo Bi Xu De Hua Huan He Dian Shua ,Shi Xian Liao Zhuan Zi Li Ci Dian Ji De Wu Shua Li Ci ;2)Wu Xu Zeng Jia Dian Ji ,Zhi Xu Zai Yuan Dian Li Ci Dian Ji Fang An De Ji Chu Shang ,Zeng Jia Liang Zu Rao Zu Ji Ke Shi Xian Wu Shua Hua Li Ci ;3)Zhuan Zi Shang Zeng Tian De Zhuan Zi Mai Zhen Li Ci Rao Zu 8Bu Dan Qi Dao Liao Gan Ying Ding Zi Li Ci Rao Zu 3Chan Sheng De Ci Tong Wei Zhuan Zi Zhi Liu Li Ci Rao Zu 9Ti Gong Zhi Liu Li Ci Dian Liu De Zuo Yong ,Er Qie Qi Ben Shen Chan Sheng De Ci Tong Yu Zhuan Zi Zhi Liu Li Ci Rao Zu 9Gong Tong Zuo Yong Yu Gong Zuo Qi Xi ,Bi Mian Zeng Tian Yi Tao Zhuan Zi Li Ci Rao Zu Er Jiang Di Li Ci Xiao Lu De Wen Ti ;Shi Xian Zhuan Zi Li Ci Hun He Li Ci Dian Ji De Wu Shua Li Ci

title: Starting control strategy for three stage aviation brushless synchronous motor
abstract: When three stage aviation brushless synchronous motor is excited by single phase AC during the starting period,the excitation current of the main generator contains pulsating components,and the electromagnetic and mechanical coupling between the main generator and exciter is serious.The adoption of traditional control method based on single motor model for starting control leads to the motor torque with larger ripple,and makes the starting with load difficult.A starting control strategy under unstable current excitation was presented,based on the analysis of the output characteristics of exciter and the research of the integration model considering exciter and main generator in starting period.Experiment results verify that this method is insensitive to the excitation pulsating disturbance,and great improvement is achieved in the stability and load capacity of motor state.

title: Controlled drive with a DC brushless synchronous motor
abstract: Special regimes and special control techniques are proposed and investigated for controlled pump and fan drives with DC brushless synchronous motor. Specific is zero EMF of an exciter with zero speed. Investigation confirms suitability of proposed regimes and control. Results are implemented in two turbo compressor drives, 6.3 MW, 3000 rpm each.

title: Research on intelligence excitation system for brushless synchronous motor
abstract: The synchronous motor has the nonlinear time varying parameters and the complexity of mathematical model.However,the excitation system which takes the measures of PID control has a slow response and poor dynamic stability.Then,fuzzy PID control is introduced in this issue.And this system still includes the auxiliary control links deviation control.The basis of MATLAB/Simulink on synchronous brushless motor excitation system attributes to the simulation model on the synchronous motor load changes in the run characteristics.The results indicate that the power factor of regulation has the ideal and static state and the obvious advantages compared with the PID control.This excitation system has been used in the hot rolling mill in Wuhan Iron and Steel,and the effect is good.

title: Hybrid rotor brushless synchronous motor
abstract: The utility model discloses a hybrid rotor brushless synchronous motor which comprises a rotating shaft, a rotor at the outside of the rotating shaft, a stator at the outside of the rotor and an enclosure at the outside of the stator. The hybrid rotor brushless synchronous motor is characterized in that a steel sleeve is mounted between the rotating shaft and the rotor; the steel sleeve is fixed together with the rotating shaft through a positioning pin on the rotating shaft; the rotor adopts a hybrid rotor structure with 2pa+2pe electrodes; rotor packs made of a silicon steel sheet material are laminated along a radial direction; and the stator is provided with two sets of windings in an embedding manner and is connected to a stator three phase alternating current armature winding on a frequency converter as well as a stator single phase direct current exciting winding on an adjustable direct current power source at runtime. According to the hybrid rotor brushless synchronous motor, disclosed by the utility model, an electrical brush and a sliding ring are left out, operational reliability is improved, higher harmonics are reduced, temperature rise and noise are reduced and operation performance is improved; and the hybrid rotor brushless synchronous motor has the advantages of high starting torque, high outputting torque, low torque ripple, hard out of step and steady operation.

title: Robust Stator Excited Brushless Synchronous Machine: An Attractive Permanent Magnet Free Option
abstract: Rare earth free and permanent magnet free traction motor have become a significant research topic in the recent years due to several challenging issues of rare earth permanent magnets. This paper presents design, analysis, and comparative study of a robust stator excited brushless synchronous machine (SEBSM) First, topology and principle of operation of proposed SEBSM are illustrated. Key design issues are analyzed, including initial sizing equation, pole combination, rotor structure, and influence of leading design parameters. Finally, the electromagnetic performance and torque capability of proposed robust SEBS machine is compared to conventional wound field synchronous machine. The result shows torque capability of proposed SEBSM can reach 85% of conventional wound field synchronous machine.

title: Dual Third Harmonic Current Excitation Principle of a Brushless Synchronous Machine Based on Double Three Phase Armature Windings
abstract: Traditional harmonic excitation synchronous machine can only be used for generator. One of the main reasons why the harmonic excitation synchronous machine can not be used as a motor is that the field current of the harmonic excitation synchronous machine can not be generated when the rotor is at a stationary state. A double three phase brushless synchronous machine employing double third harmonic current excitation method is proposed in this paper. A rotating harmonic magnetic field can be generated in the air gap by the double three phase orthogonal harmonic currents. Therefore, the brushless excitation can still be realized when the rotor is stationary or at a low speed. The stator harmonic magnetic fields are theoretically analyzed. The FEA results verify the correctness of the theoretical analyses.