Analysis & Evaluation of Soft-Switching Inverter Techniques

This dissertation presents the systematic analysis and the critical assessment of the AC side soft-switching inverters in electric vehicle (EV) applications. Although numerous soft-switching inverter techniques were claimed to improve the inverter performance, compared with the conventional hard-switching inverter, there is the lack of comprehensive investigations of analyzing and evaluating the performance of soft-switching inverters. Continue reading Analysis & Evaluation of Soft-Switching Inverter Techniques

Remote Controlled Fan Regulator

The paper presents a simple design and implementation of a remote controlled fan regulator. It enables the user to operate a fan regulator from approximately 10 meters away. The remote transmits a tone using an infrared light-emitting diode. This tone is decoded by a receiver, since the receiver only switches when the tone is received. The system was broken down into simpler functional blocks namely; infra-red transmitter, infra-red sensor, signal amplifier, control logic, sampler, control stepper, output control logic, load and display unit. Details of each subunit are described in the paper. Continue reading Remote Controlled Fan Regulator

3 Phase Appliance Protector

Many of our costly appliances require three-phase AC supply for operation. Failure of any of the phases makes the appliance prone to erratic functioning and may even lead to failure. Hence it is of paramount importance to monitor the availability of the three-phase supply and switch off the appliance in the event of failure of one or two phases. The power to the appliance should resume with the availability of all phases of the supply with certain time delay in order to avoid surges and momentary fluctuations. The complete description of a three phase appliance protector is described here. Continue reading 3 Phase Appliance Protector

Feedback Control of a Hovercraft over a Wireless Link

Abstract :-
Nonlinear underactuated systems (i.e. systems with fewer control inputs than configuration variables) present significant challenges for automatic control. This thesis explores feedback control of an underactuated hovercraft over a wireless communication channel using techniques from nonlinear control theory. Continue reading Feedback Control of a Hovercraft over a Wireless Link

Structural Test bench Development for DSP Models

Abstract :-
The objective of this thesis is the development of a set of library models from which a structural test bench can be created. This thesis also describes creation of the structural test bench using the library of primitive components and Synopsis Graphical Environment, a conventional schematic capture tool. This approach has been implemented for two applications Continue reading Structural Test bench Development for DSP Models

Speed Control of DC Motor using Microcontroller 8051 with Circuit Diagram

The aim of developing this project is to control the speed of DC motor. The main advantage in using a DC motor is that the Speed-Torque relationship can be varied to almost any useful form. To achieve the speed control an electronic technique called Pulse Width Modulation is used which generates High and Low pulses. These pulses vary the speed in the motor. For the generation of these pulses a microcontroller (AT89c51) is used. As a microcontroller is used setting the speed ranges as per the requirement is easy which is done by changing the duty cycles time period in the program. Continue reading Speed Control of DC Motor using Microcontroller 8051 with Circuit Diagram