Roupchan Hardowar

Research Interest: Power Quality, Power System, Power distribution

Current Research:

Passive Filter Design For ASD
Now more and more induction motors are used in the utility system. In order to control the speed of induction motor, many methods have been developed. The most popular way is to use the Adjustable Speed Drive (ASD. With this device, we can get two advantages: one is that we can get a low start current; the other is that we can change the motor speed conveniently by controlling the output frequency of the ASD. But at the same time, AC inverter can also causes harmonics in utility and becomes the harmonic source in utility system. These harmonics will reduce the power factor and, if seriously enough, it will destroy the motor in this system. In our project, we need to build a passive filter to eliminate the 5 th and 7 th harmonic. In our project, we use a system including AC source, Adjustable Speed Driver, Induction motor, DC motor and a resistor to observe the harmonics, then design harmonic filters to eliminate the 5 th and 7 th harmonic.

• Evaluation of 3-F Bolted Short-Circuits on Distribution Networks Having Customer's distributed Generators; sponsored by Consolidated Edison Company, NY.
• Installation and Operation of DC Generator
• Passive filter design for ASD

Papers/Presentations/Posters/Reports
Passive Filter Design For ASD to Eliminate 5 and 7 Harmonics

Yang Lu (ylu@students.poly.edu)

Current Research:

Intelligent power supply with energy harvesting for wireless sensors networking
The overall goal is to implement a body area (human body) wireless sensor network supported by NSF. It will include communication part, sensors, and energy harvesting. The communication part will include energy efficient transmitter/receivers with switching power supplies that can follow the envelope of an Am modulated signal of a few MHz. In order to accomplish that, we need to implement switching power supplies with operating frequencies in the range of 100 MHz.

Alkesh Patel (alkeshpatelcareer@yahoo.com)

Research Interest: Power System Dynamics & Control,Power Electronics and Power Quality,Electrical Machine Design

Current Research:

Steady State Equivalents for Large Radial and Mashed Distribution Systems,Finite Elements Analysis of Generator

Rehmat Ali Syed( srahmathali@yahoo.co.in ; rsyed01@students.poly.edu )

Research Interest: Power System, Power lines, Power Electronics, Power Transciets, Power Distrubuted generation

Current Research:

An Integrated Neural Fuzzy Approach for Fault Diagnosis of Transformers This presents a new and efficient integrated neural fuzzy approach for transformer fault diagnosis using dissolved gas analysis. The proposed approach formulates the modeling problem of higher dimensions into lower dimensions by using the input feature selection based on competitive learning and neural fuzzy model. Then, the fuzzy rule base for the identification of fault is designed by applying the subtractive clustering method which is very good at handling the noisy input data. Verification of the proposed approach has been carried out by testing on standard and practical data. In comparison to the results obtained from the existing conventional and neural fuzzy techniques, the proposed method has been shown to possess superior performance in identifying the transformer fault type.

Back