i-manager's Journal on Electrical Engineering (JEE)


Volume 9 Issue 2 October - December 2015

Research Paper

Performance Analysis of Model Reference Adaptive Control Using Lyapunov Approach for A Dynamical System.

Eshita Rastogi* , L. B. Prasad**
* Post Graduate, Department of Electrical Engineering, Madan Mohan Malaviya University of Technology, Gorakhpur, India
** Assistant Professor, Department of Electrical Engineering, Madan Mohan Malaviya University of Technology, Gorakhpur, India.
Rastogi, E., and Prasad, L. B. (2015). Performance Analysis of Model Reference Adaptive Control Using Lyapunov Approach for A Dynamical System. i-manager’s Journal on Electrical Engineering,9(2), 1-7. https://doi.org/10.26634/jee.9.2.3715

Abstract

In this paper, a review on adaptive control scheme and the performance analysis of model reference adaptive control is presented. This paper deals with the application of Model Reference Adaptive Control (MRAC) using Lyapunov stability criteria for a dynamical system. The control scheme is implemented for the first order dynamical system considering different values of adaptation gain. Simulation result and analysis were presented for different values of adaptation gain and reference signals. The tracking error and parameter estimation error were also analyzed

Research Paper

Effect Of Resonance on the Performance Of Single phase Two Winding Self Excited Induction Generator.

M. Rizwan Khan* , M. Faisal Khan**
* Associate Professor, Department of Electrical Engineering, Aligarh Muslim University, Aligarh, India.
** Assistant Professor, Faculty of Engineering & Technology, University Polytechnic, Aligarh Muslim University, Aligarh, India.
Khan, M. R., and Khan, M. F. (2015). Effect of Resonance on the Performance of Single phase Two Winding Self Excited Induction Generator. i-manager’s Journal on Electrical Engineering,9(2), 8-15. https://doi.org/10.26634/jee.9.2.3716

Abstract

Due to an inherently poor voltage regulation, the Self Excited Induction Generators (SEIGs) are incapable of supplying RL loads. One way of improving their voltage regulation is by series capacitance compensation. However, as the steady state load-ability limit of a compensated SEIG is increased, it is more likely to experience resonance due to change in either inductive loading or frequency or both. In this paper, a detailed analysis of resonating behavior of a single phase, two winding SEIG is carried out. The effects of resonance on the performance of SEIG are evaluated through performance characteristics obtained at the loads of different power factors. A steady state model of series compensated single phase, double winding SEIG is developed through MATLAB M file. The optimum excitation and compensation capacitances are selected by performing experimental tests on a 1 phase, double winding, 220/230 V SEIG.

Research Paper

Permanent Magnet Synchronous Motor As Traction Motors For Diesel-Electric Traction in India.

C. Nagamani* , R. Somanatham**, U. Kusuma Kumari***, U. Chaitanya Kumar****
* Research Scholar, Department of Electrical Engineering, University College of Engineering, Osmania University, Hyderabad, India.
** Head, Department of Electrical Engineering, Anurag College of Engineering, Hyderabad, India.
***_**** PG Scholar, Department of Electrical Engineering, Anurag College of Engineering, Hyderabad, India.
Nagamani, C., Somanatham, R., Kumari, U. K., and Kumar, U. C. (2015). Permanent Magnet Synchronous Motor As Traction Motors For Diesel-Electric Traction in India. i-manager’s Journal on Electrical Engineering,9(2), 16-40 https://doi.org/10.26634/jee.9.2.3717

Abstract

The use of Insulated Gate Bi-polar Transistor as the switching device in rectifier and inverters for high power applications like electric traction as it is efficient, reliable, has improved power factor and also robust. Combined with the technology of manufacture of 3-φ Squirrel Cage Induction Motors, the modern diesel-electric locomotives are driven by dieselengine driven alternators. These modern diesel locomotives are called the Electro-motive Diesels. In this paper, a new drive system with Permanent Magnet Synchronous Motors (PMSM) as traction motors is being suggested by the authors as PMSM are robust, more efficient, work on near unity power factor, and have a higher torque/Volume ratio.

Research Paper

Fault Classification of Induction Motor Bearing Using Statistical Features and Artificial Neural Network.

Raj Kumar Patel* , V. K. Giri**
* Research Scholar, Department of Electrical Engineering, M.M.M. University of Technology, Gorakhpur, U.P, India.
** Professor, Department of Electrical Engineering, M.M.M. University of Technology, Gorakhpur, U.P, India.
Patel, R. K., and Giri, V. K. (2015). Fault Classification of Induction Motor Bearing Using Statistical Features and Artificial Neural Network. i-manager’s Journal on Electrical Engineering,9(2), 41-48. https://doi.org/10.26634/jee.9.2.3718

Abstract

Bearings are one of the critical components in rotating machines and the majority of failure arises from the defective bearings. Bearing failure leads to failure of a machine and unpredicted productivity loss for production facilities. Hence, bearing fault detection and diagnosis is an integral part of the preventive maintenance procedures. In this paper, vibration signals for four conditions of a deep groove ball bearing Normal (N), fault on Inner Race (IR), fault on ball and fault on Outer Race (OR) were acquired from a customized bearing test rig, under no load and full load condition and each load condition with two fault size 0.007 inch and 0.021 inch has been taken. Statistical parameter from the time domain has been used as a feature of vibration signal for the classification purpose. Sensitivity analysis is performed to understand the significance of each input feature on the ANN (Artificial Neural Network) output. The ANN performance has been found to be comparatively higher to those feature which are highly sensitive

Review Paper

Parameter Estimation Of Permanent Magnet Synchronous Motor-A Review

P. Ramana* , 0**, Surya Kalavathi M***, A. Swathi****
* Associate Professor, GMR Institute of Technology, Rajam, AP, India.
** Professor and Principal, VIIT, Duvvada, Visakhapatnam, AP, India.
*** Professor, JNTUCE, Hyderabad, AP, India.
**** Assistant Professor, Sarada Institute of Science & Technology & Management (SISTAM), Srikakulam, AP, India.
Ramana, P., Mary, K. A., Kalavathi, M. S., and Swathi, A. (2015). Parameter Estimation Of Permanent Magnet Synchronous Motor-A Review. i-manager’s Journal on Electrical Engineering,9(2), 49-59. https://doi.org/10.26634/jee.9.2.3719

Abstract

Permanent Magnet Synchronous Motor (PMSM) drives are being used increasingly in a wide range of applications, such as machine tools, robotics, aerospace generators, actuators and electric vehicles. It is extensively used in industrial applications due to it's advantageous features such as high efficiency, high torque to inertia ratio, low noise and robustness. In advanced motor control system, an accurate knowledge of motor parameters are essential in order to achieve better performance. Machine parameters are classified into electrical parameters such as resistances of windings and d, q axes inductances of both stator and rotor and mechanical parameters such as angular position, speed, moment of inertia and viscous friction coefficient. Various types of parameter estimation methods for PMSM are available in the literature such as back e.m.f. based method, signal injection based method, state observer based method, Model Reference Adaptive System (MRAS) based method etc. This paper presents a review of all these methods used to estimate the parameters of a Permanent Magnet Synchronous Motor.