A dynamic decoupling control scheme for high-speed operation of induction motors

1999 ◽  
Vol 46 (1) ◽  
pp. 100-110 ◽  
Author(s):  
Jinhwan Jung ◽  
Kwanghee Nam
Keyword(s):  
High Speed ◽  
Induction Motors ◽  
Decoupling Control ◽  
Dynamic Decoupling ◽  
Control Scheme

Additional no-load losses in inverter-fed high-speed cage induction motors

2004 ◽  
Vol 86 (2) ◽  
pp. 105-116 ◽  
Author(s):  
G. Joksimovic ◽  
A. Binder
Keyword(s):  
High Speed ◽  
Induction Motors

Decoupling control scheme for pulsed GMAW process of aluminum

2012 ◽  
Vol 212 (4) ◽  
pp. 801-807 ◽  
Author(s):  
Lihui Lu ◽  
Ding Fan ◽  
Jiankang Huang ◽  
Yu Shi
Keyword(s):  
Decoupling Control ◽  
Control Scheme

Improvement of Quality and Efficiency in Mineral Material Processing under Extreme Dynamic Environments

2012 ◽  
Vol 189 ◽  
pp. 355-358
Author(s):  
Wen Li Lian ◽  
Bo Xiang ◽  
Ping Zhou
Keyword(s):  
Material Processing ◽  
Dynamic Systems ◽  
Production Quality ◽  
Decoupling Control ◽  
Operation Performance ◽  
Mineral Material ◽  
Control Scheme ◽  
Process Simulations ◽  
High Interaction ◽  
Grinding System

In mineral processing the high material volumes yield the fact that benefits of even small improvements in the production quality and product efficiency are remarkable. During the operation of the mineral material processing, the grinding circuit (GC) is the key unit and its product particle size and circulating load are two controlled indexes directly related to the quality and efficiency of the whole mineral material processing. Therefore, an appropriate control of GC is especially significant to improve the operation performance of the mineral material processing. Due to the GCs are essentially multivariable dynamic systems with high interaction among process variables. It is hard to improve the quality and efficiency in the mineral material processing by controlling the grinding system with the conventional methods. In this paper, a novel multivariable decoupling control scheme is adopted to handle such intricate process. Simulations have shown the proposed method can greatly improve the production quality and product efficiency of the mineral material processing.

H∞Control for PMLSM Suspension Platform Based on PDFF

2011 ◽  
Vol 383-390 ◽  
pp. 6886-6892
Author(s):  
Jia Kuan Xia ◽  
Yi Na Wang ◽  
Yi Biao Sun
Keyword(s):  
Feedback Linearization ◽  
High Speed ◽  
Normal Force ◽  
Dynamic Stiffness ◽  
Linearization Method ◽  
Dynamic Decoupling ◽  
Fast Tracking ◽  
Speed Controller ◽  
Simulation Results ◽  
Proportional Controller

Permanent magnet linear synchronous motor (PMLSM) suspension system has the merits of no friction, high-speed, high response and so on, using the normal force achieve the mover suspension. The servo performance is affected by the nonlinear coupling between the horizontal trust and vertical normal force, parameters uncertainties and load disturbances. The feedback linearization method is used to achieve the dynamic decoupling of the PMLSM suspicion system and decoupling it Into two linear subsystems; to solve the conflict between disturbance restraint and fast tracking performance, increase the robustness and dynamic stiffness for system, H∞ speed controller based on PDFF and position proportional controller are designed. Simulation results show that the proposed control strategy guarantees the high speed and high precision positioning performance for horizontal axis; the good rigidity and stability for normal suspension length and the strong robustness against load disturbances and parameters variations for the two axes.

Starting Processes in Electric Drive of a Passenger Elevator

2021 ◽  
Vol 1 (1) ◽  
pp. 40-49
Author(s):  
S. Rachev ◽  
K. Dimitrova ◽  
D. Koeva ◽  
L. Dimitrov
Keyword(s):  
Coordinate System ◽  
Induction Motor ◽  
Electric Drive ◽  
High Speed ◽  
Induction Motors ◽  
Dynamic Loads ◽  
Design Stage ◽  
Motor Drive ◽  
Induction Motor Drive ◽  
Electric Induction

During the operation of electric induction motors used to drive passenger elevators, electro-mechanical transient processes occur, which can cause unacceptable dynamic loads and vibrations. In this regard, research is needed both at the design stage and for operating elevator systems to determine the arising impact currents and torques, in order to propose solutions for their limitation within pre-set limits. Paper deals with starting processes in a two-speed induction motor drive of a passenger elevator. The equations for the voltages of the induction motor are presented in relative units in a coordinate system rotating at a synchronous speed. The values have been obtained for the torques, the rotational frequencies and the currents when starting at a high speed and passing from high to low speed.

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