Field weakening performance of a synchronous motor with two-part rotor

1997 ◽  
Author(s):  
D.F. Gosden
Keyword(s):  
Synchronous Motor ◽  
Field Weakening

scholarly journals Operation modes and control algorithms of anisotropic permanent magnet synchronous motor (IPMSM)

2019 ◽  
Vol 140 ◽  
pp. 10006
Author(s):  
Aleksandr Lutonin ◽  
Andrey Shklyarskiy ◽  
Yaroslav Shklyarskiy
Keyword(s):  
Control System ◽  
Permanent Magnet ◽  
Control Strategy ◽  
Permanent Magnet Synchronous Motor ◽  
Synchronous Motor ◽  
Speed Limit ◽  
Maximum Torque ◽  
Field Weakening ◽  
Output Torque ◽  
And Control

This paper represents control strategy of anisotropic permanent magnet synchronous motor (IPMSM) in the field-weakening region. Field weakening controller allows to increase maximum achievable speed with output torque reduction. Proposed control system consists of four general modes: MTPA (maximum torque per ampere), MC (maximum current), FW (field weakening), and MTPV (maximum torque per voltage) which must be chosen accordingly to motor speed, current and torque references. Operation point is found as an intersection of torque hyperbola and voltage ellipse curves in d-q motor’s current reference frame involving motor parameters’ limits. However, due to nonlinear dependence between torque and voltage equations, it is quite complicated to obtain both right control mode selection and reference output calculation. In order to solve this problem, a unified control algorithm adopted for wide speed and torque reference with online constraints calculation is proposed. Matlab/Simulink control model of PMSM motor and control system were designed in order to show developed strategy performance. Simulation results shows increasing of speed limit by more than 2.5 times related to nominal speed with high controller’s response. However, speed limit increasing leads to a decrease in motor’s output torque. Due to this fact, presented control strategy is not suitable for applications where nominal torque level is essential for all speed operation points.

Adaptive Backstepping Control for an Interior Permanent Magnet Synchronous Motor Servo System

2011 ◽  
Vol 317-319 ◽  
pp. 120-123 ◽  
Author(s):  
Li Lin ◽  
Hong Wei Tang ◽  
Jie Tang
Keyword(s):  
Permanent Magnet ◽  
Permanent Magnet Synchronous Motor ◽  
Synchronous Motor ◽  
Adaptive Backstepping ◽  
Field Weakening ◽  
Constant Torque ◽  
Speed Controller ◽  
Speed Range ◽  
Tracking Ability ◽  
Interior Permanent Magnet

This paper presents a nonlinear adaptive backstepping current hysteresis speed controller which can be used in both the constant-torque region and the field-weakening region for an interior permanent magnet synchronous motor (IPMSM). By using the proposed method, the adjustable speed range can be extended to 4 times that of the base speed. In addition, the d-axis current is suitably adjusted to increase the output torque of the IPMSM. Simulation results show that the implemented system has satisfactory performance, including good transient responses, good load-disturbance-rejection responses, and good tracking ability.

Concentrated Winding IPM Synchronous Motor Design for Wide Field Weakening Applications

2017 ◽  
Vol 53 (3) ◽  
pp. 1892-1900 ◽  
Author(s):  
Mohammad Sedigh Toulabi ◽  
John Salmon ◽  
Andrew M. Knight
Keyword(s):  
Synchronous Motor ◽  
Wide Field ◽  
Field Weakening ◽  
Motor Design
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