A novel Hexagonal Flux control method to improve constant switching performance of multilevel 3-phase DTC

2016 ◽  
Author(s):  
R. Sundram ◽  
Auzani Jidin ◽  
Atikah binti Razi ◽  
Siti Azura Binti Ahamd Tarusan ◽  
M. Khairi Rahim
Keyword(s):  
Control Method ◽  
Flux Control ◽  
Switching Performance

Developing the Micro-Flux Control Method Part 1: System Development, Field Test Preparation and Results.

2005 ◽  
Author(s):  
Helio Mauricio Santos ◽  
Paul Ian Reid ◽  
Julian Leigh Jones ◽  
John McCaskill
Keyword(s):  
Field Test ◽  
Control Method ◽  
System Development ◽  
Test Preparation ◽  
Flux Control

Multiobjective Robust Regulating and Protecting Control for Aeroengines

2009 ◽  
Vol 131 (6) ◽  
Author(s):  
Daren Yu ◽  
Xiaofeng Liu ◽  
Wen Bao ◽  
Zhiqiang Xu
Keyword(s):  
Control Method ◽  
Design Method ◽  
Dynamic Performance ◽  
Switching Control ◽  
Linear Matrix ◽  
Matrix Inequality ◽  
Proportional Integral Derivative ◽  
Engine Control System ◽  
Switching Performance ◽  
The Stability

The multiobjective regulating and protecting control method presented here will enable improved control of multiloop switching control of an aeroengine. The approach is based on switching control theory, the switching performance objectives and the strategy are given, and a family of H∞ proportional-integral-derivative controllers was designed by using linear matrix inequality optimization algorithm. The simulation shows that using the switching control design method not only can improve the dynamic performance of the engine control system but also can guarantee the stability in some peculiar occasions.

scholarly journals Direct flux control – sensorless control method of PMSM for all speeds – basics and constraints

2017 ◽  
Vol 53 (16) ◽  
pp. 1110-1111 ◽  
Author(s):  
T. Müller ◽  
C. See ◽  
A. Ghani ◽  
A. Bati ◽  
P. Thiemann
Keyword(s):  
Control Method ◽  
Sensorless Control ◽  
Flux Control ◽  
All Speeds

scholarly journals Fast Flux and Torque Control of a Double Inverter-Fed Wound Machine Considering All Coupling Interferences

Electronics ◽  
2021 ◽  
Vol 10 (15) ◽  
pp. 1845
Author(s):  
Yongsu Han
Keyword(s):  
Control Method ◽  
Controller Design ◽  
Design Method ◽  
Current Control ◽  
Torque Control ◽  
Flux Control ◽  
Efficient Operation ◽  
Decoupling Method ◽  
Current Controller ◽  
Fast Flux

For efficient operation of the squirrel cage induction motor, the flux must be properly adjusted according to the torque. However, in such variable flux operation, the performance of torque control is limited by the flux control because it is not possible to measure and control the rotor current that affects the flux. On the contrary, in a double inverter-fed wound machine (DIFWM), the inverter is connected to the rotor side, as well as the stator side, and the rotor current can be controlled. This controllability of the rotor currents improves the operation performance of a DIFWM. This article presents the decoupling current control method of a DIFWM for fast flux and torque control. Since the rotor flux is directly calculated by the stator and rotor currents, the bandwidth of the flux control can be improved to the bandwidth of the current controller, which means that the torque control also has the same bandwidth. In this article, a detailed current controller design method with a DIFWM feed-forwarding decoupling method to eliminate all coupling interferences is proposed. The simulation and experimental results regarding the DIFWM are presented to verify the torque and flux control performance of the proposed control method.

Direct Torque Control of Asynchronous Motor Based on Flux Auto Switching

2011 ◽  
Vol 328-330 ◽  
pp. 1693-1696
Author(s):  
Shi Qiu Li ◽  
Shu Ai Hao ◽  
Xu Ma ◽  
Yong Mei Cheng
Keyword(s):  
Control Strategy ◽  
High Speed ◽  
Control Method ◽  
Asynchronous Motor ◽  
Direct Torque Control ◽  
Torque Control ◽  
Harmonic Current ◽  
Flux Control ◽  
Low Speed ◽  
Switching Losses

Based on the theory of direct torque control, the simulation model of asynchronous motor is designed to solve two problems. The one is that asynchronous motor in high speed, if a single circular flux control method used, its switching losses will be great; the other one is that asynchronous motor in low speed, if a single hexagonal flux control method used, it will make a large harmonic current. So double modes are used in solve problems together in this paper. That is when asynchronous motor runs at low speed circular flux control strategy is adopted, and when it runs at high speed hexagon flux control strategy is adopted. Auto-switch between circular flux control strategy and hexagon flux control strategy is achieved. Simulation results show that not only the harmonic current can be reduced, and the switching losses are reduced effectively by smooth switching the two control strategies.

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