scholarly journals Effect of Saturation on Field Oriented Control of the New Designed Reluctance Synchronous Motor

Energies ◽  
2018 ◽  
Vol 11 (11) ◽  
pp. 3223 ◽  
Author(s):  
Pavol Rafajdus ◽  
Valeria Hrabovcova ◽  
Pavel Lehocky ◽  
Pavol Makys ◽  
Filip Holub
Keyword(s):  
Induction Motor ◽  
Control Strategy ◽  
Closed Loop ◽  
Frequency Converter ◽  
Synchronous Motor ◽  
Field Oriented Control ◽  
Torque Measurement ◽  
Maximum Torque ◽  
Saturation Effects ◽  
Load Angle

In this paper the effect of saturation on torque production of a reluctance synchronous motor (RSM), which was originally built as an induction motor (IM), is investigated. The rotor was replaced with new one, designed as synchronous reluctance cageless rotor with barriers, the shape and number of which were optimized to maximize the reluctance ratio. The torque measurement was done while the RSM was fed by frequency converter controlled by a microcontroller with closed loop field oriented control strategy to find out how saturation effects the developed torque at various values of the currents and speeds. It is shown how the load angle at which the maximum torque was achieved is changed. It was found out that the load angle was shifted to higher values depending on the speed of operation.

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.

A maximum torque per ampere control strategy for induction motor drives

1998 ◽  
Vol 13 (2) ◽  
pp. 163-169 ◽  
Author(s):  
O. Wasynczuk ◽  
S.D. Sudhoff ◽  
K.A. Corzine ◽  
J.L. Tichenor ◽  
P.C. Krause ◽  
...  
Keyword(s):  
Induction Motor ◽  
Control Strategy ◽  
Motor Drives ◽  
Induction Motor Drives ◽  
Maximum Torque ◽  
Maximum Torque Per Ampere

scholarly journals Analysis of Field Oriented Control Strategy for Induction Motor

10.29007/6ntf ◽  
2018 ◽  
Author(s):  
Ujash Vachhani ◽  
Ashish Patel
Keyword(s):  
Computer Simulation ◽  
Induction Motor ◽  
Reference Frame ◽  
Model Theory ◽  
Control Strategy ◽  
Pi Controller ◽  
Frame Theory ◽  
Field Oriented Control ◽  
Three Phase ◽  
Q Model

This paper presents the controlling of the Induction Motor by using the „Field Oriented Control (FOC)‟ method with a PI controller. In addition, the paper describes a model of three phase Induction Motor in d-q reference frame theory and its computer simulation in MATLAB/SIMULINK®. The required equations are stated in the paper itself in d-q model theory.

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