Electrical Engineering

Trends in

www.stmjournals.com STM JOURNALSScientific Technical Medical

ü Developing a Model in Matlab/Simulink Environment for Induction Motor

ü Voltage & Frequency Control of Self Excited Induction Generator

ü Energy Management for Rural Electrification

ü A Core Loss Model for SRG Based on FEM

(TEE)May - August 2014

ISSN: 2321-4260

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STM JOURNALS

1. Developing a Model in Matlab/Simulink Environment for Induction Motor Considering Core Loss and Stray Load Loss Mohammad Abdul Mannan, Rupak Kanti Dhar, Md. Ehtashamul Haque 1

2. Voltage and Frequency Control of a Self Excited Induction Generator Using VSI Sunny Vig, Kamalkant Sharma, Balwinder Singh Surjan 13

3. Energy Management for Rural Electrification using Hybrid Optimization Model for Electric Renewable Kumar H., Sharma K. K., Vig S., Singh B. 21

4. A Core Loss Model Based on Finite Element Method for Switched Reluctance Generator Considering Different Control Modes Ganji Babak, Heidarian Mahdi 26

ContentsTrends in Electrical Engineering

TEE (2014)© STM Journals 2014. All Rights Reserved

Trends in Electrical Engineering ISSN: 2249-4774(online), ISSN: 2321-4260(print)

Volume 4, Issue 2

www.stmjournals.com

Developing a Model in Matlab/Simulink Environment

for Induction Motor Considering Core Loss

and Stray Load Loss

Mohammad Abdul Mannan, Rupak Kanti Dhar*, Md. Ehtashamul Haque Department of Electrical and Electronic Engineering, American International University-Bangladesh,

Kemal Ataturk Avenue, Banani, Dhaka-1213, Bangladesh

Abstract This paper focuses on a Matlab/Simulink model of a squirrel-cage induction motor with

consideration of core loss and stray load loss. This model is based on some mathematical

expressions and also described through an equivalent circuit including core loss and stray load loss. The model of induction motor has been developed based on the state

space equations in a synchronously rotating reference frame, where core loss and stray load losses were taken under consideration. The developed model allows testing the

performance of an induction motor in different operating conditions and the performance

of different designed control systems to control speed, flux and torque of an induction motor. The designed model has been tested for several operating conditions through the

simulation in Matlab/Simulink environment.

Keywords: Induction motor, machine modeling, core loss, stray load, field-oriented

control, vector control

TEE (2014)© STM Journals 2014. All Rights Reserved

Trends in Electrical Engineering ISSN: 2249-4774(online), ISSN: 2321-4260(print)

Volume 4, Issue 2

www.stmjournals.com

Voltage and Frequency Control of a Self Excited

Induction Generator Using VSI

Sunny Vig*, Kamalkant Sharma, Balwinder Singh Surjan Electrical Engg. Department, Punjab Engineering College, University of Technology,

Chandigarh, India

Abstract In remote areas of a country where it is impossible or too expensive to access main power lines, one solution to obtain electric power is to use a small stand-alone hydro

power plant. In such a situation, the turbine is been driven by a steady flow of water in a

river. It is preferable to use a self-excited induction generator, due to its low cost an ruggedness. The voltage and frequency of such an induction generator in stand- alone

operation are very sensitive to load changes. Various methods had been proposed to

control the voltage and frequency of a self excited induction generator. This paper describes that by applying voltage source inverter in parallel to the load, the regulation

of voltage and frequency can be achieved. After developing the controller, regulated voltage and frequency operation of the self-excited induction generator is simulated by

using MALAB with a squirrel cage type induction generator. The aim is the total

elimination of the AC capacitor bank.

Keywords: Induction Generator, Vf Control, PWM, VSI

TEE (2014) © STM Journals 2014. All Rights Reserved

Trends in Electrical Engineering ISSN: 2249-4774(online), ISSN: 2321-4260(print)

Volume 4, Issue 2

www.stmjournals.com

Energy Management for Rural Electrification using

Hybrid Optimization Model for Electric Renewable

Kumar H.1*

, Sharma K. K.1, Vig S.

1, Singh B.

2

1Deptt. of Electrical Engineering, Chandigarh University, Gharuan, Punjab, India

2Department of Electrical Engineering, PEC University of Technology, Chandigarh, Punjab, India

Abstract India ranks fourth in terms of purchasing power and is eleventh largest economy of the world. Solar Energy, Animal wastes, and Crop residues are some of the major renewable

sources available in rural areas of India that can be harnessed in an efficient way to meet

the energy demand. After assessing the Existing Village (Nangal), it was found that Hybrid Renewable Energy System is an optimum solution for complete electrification of

rural areas. These natural resources can be used to produce energy to enhance the living

standards of the villagers, provide clean energy and reducing the burden on conventional grid. This paper aims to devise a plan for a village with a complete solution to meet

domestic energy demand of a village by Renewable energy sources and reliable electricity supply.

Keywords: HRES, renewable sources of energy, electrification of village, domestic

load, HOMER

TEE (2014)© STM Journals 2014. All Rights Reserved

Trends in Electrical Engineering ISSN: 2249-4774(online), ISSN: 2321-4260(print)

Volume 4, Issue 2

www.stmjournals.com

A Core Loss Model Based on Finite Element Method for

Switched Reluctance Generator Considering Different

Control Modes

Ganji Babak, Heidarian Mahdi* Faculty of Electrical and Computer Engineering, University of Kashan, Kashan, Iran

Abstract In the present paper, core loss modeling of switched reluctance generator (SRG) is

proposed for the first time. Using ANSYS finite element (FE) package, 2D FE transient

analysis of SRG is carried out and the stator pole flux waveform is predicted. To

determine the flux waveforms in the different parts of the machine, an introduced mathematical flux model is considered and its algorithm is implemented in ANSYS

Parametric Design Language (APDL). Core loss related to the determined flux

waveforms are calculated based on the improved Steinmetz equation. The core loss model created totally in APDL can be applied to different conventional types of SRG. Applying

the developed core loss model to an 8/6 SRG, simulation results including the flux

waveforms and relevant core loss are presented for both single pulse control mode and PWM control mode.

Keywords: Switched Reluctance Generator, Core Loss, Finite Element Analysis