scholarly journals New Trends in Efficiency Optimization of Induction Motor Drives

10.5772/10427 ◽  
2010 ◽  
Author(s):  
Branko Blanusa
Keyword(s):  
Induction Motor ◽  
Motor Drives ◽  
Induction Motor Drives ◽  
Efficiency Optimization

scholarly journals Simple Hybrid Model for Efficiency Optimization of Induction Motor Drives with Its Experimental Validation

2013 ◽  
Vol 2013 ◽  
pp. 1-8 ◽  
Author(s):  
Branko Blanuša ◽  
Bojan Knezevic
Keyword(s):  
Induction Motor ◽  
Hybrid Model ◽  
Experimental Tests ◽  
Motor Drives ◽  
Control Technique ◽  
Induction Motor Drives ◽  
Loss Model ◽  
Efficiency Optimization ◽  
Model Control ◽  
Search Control

New hybrid model for efficiency optimization of induction motor drives (IMD) is presented in this paper. It combines two strategies for efficiency optimization: loss model control and search control. Search control technique is used in a steady state of drive and loss model during transient processes. As a result, power and energy losses are reduced, especially when load torque is significant less related to its rated value. Also, this hybrid method gives fast convergence to operating point of minimal power losses and shows negligible sensitivity to motor parameter changes regarding other published optimization strategies. This model is implemented in vector control induction motor drive. Simulations and experimental tests are performed. Results are presented in this paper.

scholarly journals Real-time loss minimization control in induction machines based on DSP TMS320LF2812

2013 ◽  
Vol 16 (4) ◽  
pp. 5-18
Author(s):  
Phuong Minh Le ◽  
Dung Duc Le ◽  
Thuyen Viet Nguyen ◽  
Phong Hoai Nguyen
Keyword(s):  
Real Time ◽  
Induction Motor ◽  
Digital Signal Processor ◽  
Digital Signal ◽  
Induction Machines ◽  
Motor Drives ◽  
Induction Motor Drives ◽  
Efficiency Optimization ◽  
Core Losses ◽  
Flux Level

This paper presents a DSP based implementation of simple and very useful control algorithm for the real-time efficiency optimization of the indirect vectorcontrolled induction motor drives. Conventional field-oriented induction motor drives operate at rated flux even at low load. To improve the efficiency of the existing induction motors, it is important to regulate the magnetization flux of the motor in the desired operating range. This paper presents techniques for minimizing power loss (the copper and core losses) of induction motor based on determination of an optimum flux level for the efficiency optimization of the vector-controlled induction motor drive. An induction motor (IM) model in d-q coordinates is referenced to the rotor magnetizing current. Thus the decomposition into d-q components in the steady-state motor model can be utilized in deriving the motor loss model. The algorithm offers a fast convergence. The complete closed loop vector control of the proposed LMC-based IM drive is successfully implemented in real-time using digital signal processor DSP TMS320LF2812 for 1HP motor induction motor. The close agreement between the simulation by Matlab/Simulink and the experimental results confirms the validity and usefulness of the proposed techniques. The proposed LMC in a comparison with conventional FOC can reduce total losses from 5% to 67.2% for all load ranges.

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