scholarly journals Design of Squirrel-Cage Self-Excited 3-phase Induction Generator

Author(s):  
Bilal A. Nasir ◽  

Due to the wide utilization of a 3-phase, squirrel-cage, self-excitation generator in renewable energy and isolated areas application, the paper deals with detailed design procedure of this type of generator, in a sequence and systematic manner. The design steps are obtained and executed in a Matlab file of the computer program to suit the newly designed constructions and parameters of the generator. In the new construction, the generator can be operated in a stable and saturation region. Due to the similarity in the construction of induction motor and generator, the formulas used in the calculation of equivalent circuit components of an induction motor may be utilized to calculate the parameters of the induction generator. To obtain optimized induction generator parameters and construction dimensions an ant colony algorithm is used to optimize these construction dimensions and generator parameters. The main objective parameters used in this algorithm are the generator efficiency, the excitation-capacitance, winding temperature rise, and minimum generator size is for 5 HP, 400 V, 50 Hz, and star connection generator.

2020 ◽  
Vol 8 (1) ◽  
pp. 1-12
Author(s):  
Dawid Kara ◽  
Tomasz Kołacz ◽  
Jerzy Skwarczyński

The work compares the value of the produced torque (average value) of a 2.2kW squirrel cage induction motor with new construction machines, i.e. a motor with flux switching and hybrid excitation or DC excited, a motor with flux modulation and hybrid excitation or DC excitation. The external dimensions of the tested machines corresponded to the dimensions of the induction motor.


2016 ◽  
Vol 65 (1) ◽  
pp. 117-132 ◽  
Author(s):  
Chen Xiao-Qiang ◽  
Hao Chun-Ling ◽  
Qiu Hao ◽  
Li Min

AbstractIn this paper, a low kilo-volt-ampere rating zigzag connected autotransformer based 36-pulse rectifier system supplying vector controlled induction motor drives (VCIMD) is designed, modeled and simulated. Detailed design procedure and magnetic rating calculation of the proposed autotransformer and interphase reactor is studied. Moreover, the design process of the autotransformer is modified to make it suitable for retrofit applications. Simulation results confirm that the proposed 36-pulse rectifier system is able to suppress less than 35thharmonics in the utility line current. The influence of load variation and load character is also studied to demonstrate the performance and effectiveness of the proposed 36-pulse rectifiers. A set of power quality indices at AC mains and DC link are presented to compare the performance of 6-, 24- and 36-pulse AC-DC converters.


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