A new decoupling control strategy for bearingless switched reluctance motors based on improved mathematical model

2011 ◽  
Author(s):  
Yukun Sun ◽  
Gaohong Xu ◽  
Qianwen Xiang ◽  
Yonghong Huang ◽  
Xianxing Liu ◽  
...  
Keyword(s):  
Mathematical Model ◽  
Control Strategy ◽  
Decoupling Control ◽  
Switched Reluctance Motors ◽  
Switched Reluctance

Study of Topology and Control Strategy of the Bidirectional Energy Storage Converter Based on Three-Level

2013 ◽  
Vol 397-400 ◽  
pp. 1169-1173
Author(s):  
Hong Wei Tang ◽  
Xi Kun Chen ◽  
Yan Xia Gao
Keyword(s):  
Mathematical Model ◽  
Energy Storage ◽  
Control Strategy ◽  
Lithium Battery ◽  
Decoupling Control ◽  
Midpoint Potential ◽  
Simulation Results ◽  
And Control ◽  
The Mathematical Model ◽  
Battery Module

To adapt to the requirements of the charging and discharging of the lithium battery, the paper presents a three-level based bidirectional energy storage converter topology.It has strong adaptability and can manage the charge and discharge of multi-series and parallel battery module. The mathematical model of the converter is analyzed, and the two operation modes of the converter control strategy are studied; Analysis the feed-forward decoupling control of three-level rectifier, and the variable scale factor is used to control midpoint potential. The simulation results demonstrate the feasibility of the design.

A Study on Nonlinear Decoupling Controller for UPFC

2014 ◽  
Vol 624 ◽  
pp. 460-464
Author(s):  
Zhi Bin Chen ◽  
Yan Ma ◽  
Bo Wen Su
Keyword(s):  
Mathematical Model ◽  
Nonlinear System ◽  
Control Strategy ◽  
Reactive Power ◽  
Dynamic Performance ◽  
Decoupling Control ◽  
Real Power ◽  
Power Decoupling ◽  
Simulation Results ◽  
System Characteristics

In the d-q coordinate system, UPFC mathematical model reveals a nonlinear system with features of a multi-variable, strong coupling, and more interference. In view of these system characteristics, the paper presents a nonlinear overlapping decoupled strategy with better stability and dynamic performance for UPFC control. The control strategy is analyzed and tested with the MATLAB simulative experiments. Simulation results show that the proposed control strategy can quickly and accurately respond to the needs of the power system, and realize real power and reactive power decoupling control effectively. Keywords: Dynamic Modeling, Nonlinear, Decoupling Controller, UPFC, MATLAB

Modeling and Radial-Displacement Sensorless Method for a Hybrid-Stator Bearingless Switched Reluctance Motor

2012 ◽  
Vol 433-440 ◽  
pp. 2987-2990
Author(s):  
Yu Kun Sun ◽  
Yun Hong Zhou ◽  
Yong Hong Huang ◽  
Wei Ran Wang
Keyword(s):  
Mathematical Model ◽  
Finite Element Method ◽  
Radial Displacement ◽  
Switched Reluctance Motor ◽  
Important Research ◽  
Switched Reluctance Motors ◽  
Switched Reluctance ◽  
Self Testing ◽  
Reluctance Motor ◽  
Testing Techniques

A novel hybrid-stator bearingless switched reluctance motor (HSBSRM) was researched. After analyzing magnetic linkage characteristics, its mathematical model was built with finite element method, and a radial displacement self-sensing method was designed. This hybrid stator motor has unique advantages compared with those traditional bearingless switched reluctance motors, so radial displacement self-testing techniques have important research significance and practical value. Simulation and experimental results validated the proposed methods.

A new energy optimizing control strategy for switched reluctance motors

1995 ◽  
Vol 31 (5) ◽  
pp. 1088-1095 ◽  
Author(s):  
P.C. Kjaer ◽  
P. Nielsen ◽  
L. Andersen ◽  
F. Blaabjerg
Keyword(s):  
Control Strategy ◽  
Switched Reluctance Motors ◽  
Switched Reluctance ◽  
New Energy ◽  
Optimizing Control

scholarly journals Decoupling Control Strategy of BLIM considering Rotor Mass Eccentricity

2018 ◽  
Vol 2018 ◽  
pp. 1-9 ◽  
Author(s):  
Wenshao Bu ◽  
Biao Li ◽  
Chunxiao Lu
Keyword(s):  
Mathematical Model ◽  
Control Strategy ◽  
Control Method ◽  
Magnetic Suspension ◽  
Decoupling Control ◽  
Motor Speed ◽  
Mass Eccentricity ◽  
Rotor Flux ◽  
The Mathematical Model ◽  
Rotor Mass

A BLIM, i.e., bearingless induction motor, is a multivariable, nonlinear, and strong coupling object; to achieve its high performance magnetic suspension operation control and overcome the influence of the rotor mass eccentricity, a decoupling control strategy considering the rotor mass eccentricity is proposed. Firstly, the mathematical model of the torque system based on the rotor flux orientation and the mathematical model of the magnetic suspension system based on the air gap flux orientation are presented; on this basis, the inverse system decoupling control method of the BLIM is researched. Then, according to the frequency characteristics of the unbalanced displacement, an unbalance vibration compensator is designed, which can generate a compensation force to suppress or eliminate the unbalanced displacement. Simulation experimental results have shown that the decoupling control among the rotor flux-linkage, motor speed, and two radial displacement components can be achieved; in the steady state, the unbalanced displacement can be basically eliminated, while, during the mutation process of motor speed, the unbalanced displacement can be suppressed effectively.

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