i need a powerpoint presentation on z source inverter for adjustable speed drives a novel asd system




divya teja.
....etc

[:=Read Full Message Here=:]

Presented By
A.ARTHI JANNIE


HARMONIC ANALYSIS OF SEPARATELY EXCITED DC MOTOR DRIVES FED BY SINGLE PHASE CONTROLLED RECTIFIER AND PWM RECTIFIER
ABSTRACT
PWM rectifier is an ac to dc power converter which is implemented using power electronic semiconductor switches such as MOSFET, IGBT. Different from diode bridge rectifiers, PWM rectifiers achieve bidirectional power flows,which can be extensively used in battery charger, UPS system, regulated dc voltage source. SCR converters provide low power fac ....etc

[:=Read Full Message Here=:]

SPEED CONTROL OF SYNCHRONOUS MOTOR BY USING VARIABLE FREQUENCY DRIVES



ABSTRACT :

A novel open-loop speed control method for induction motors that provides high output torque and nearly zero steady-state speed error at any frequency is presented. The control scheme is based on the popular constant volts per hertz (V/f) method using low-cost open-loop current sensors. Only stator current measurements are needed to compensate for both stator resista ....etc

[:=Read Full Message Here=:]

IMPEDENCE - SOURCE INVERTER FOR MOTOR DRIVES
Traditional Source Inverters
Voltage Source Inverter.
Current Source Inverter.
Voltage Source Inverter
Problems
This inverter can be used only for Buck operation.
For application where the required output voltage is high, an additional dc-dc boost converter is needed to obtain a desired ac output.
This inverter does not have ability to provide ride-through during voltage sags .
additional power converter stage increases system cost and lowers efficiency. ....etc

[:=Read Full Message Here=:]

SPEED CONTROL OF SYNCHRONOUS MOTOR BY USING VARIABLE FREQUENCY DRIVES



ABSTRACT :

A novel open-loop speed control method for induction motors that provides high output torque and nearly zero steady-state speed error at any frequency is presented. The control scheme is based on the popular constant volts per hertz (V/f) method using low-cost open-loop current sensors. Only stator current measurements are needed to compensate for both stator resistance d ....etc

[:=Read Full Message Here=:]

Abstract
This paper presents a Z-source inverter system and control for general-purpose motor drives. The Z-source inverter system employs a unique LC network in the dc page link and a small capacitor on the ac side of the diode front end. By controlling the shoot-through duty cycle, the Z-source can produce any desired output ac voltage, even greater than the line voltage. As a result, the new Z-source inverter system provides ride-through capability duringvoltage sags, reduces line harmonics, improves power factor and reliability, an ....etc

[:=Read Full Message Here=:]

CHAIN DRIVES IN LOW TORQUE DRIVES AND REDUCING PULSATIONS
INTRODUCTION TO DRIVES

Mechanical components used for power transmission.It may be belt, chain or gear depending on engine design parameters like - Distance between crankshaft and camshaft, engine maximum speed, engine-torque and engine construction cost.- Power transmission is done from one shaft to another shaft which may or may not rotate at same spe ....etc

[:=Read Full Message Here=:]

i want ppt for z source inverter for adjustable speed drives ....etc

[:=Read Full Message Here=:]

ADAPTIVE CONTROLLER FOR DC MOTOR DRIVES: A HARDWARE AND SOFTWARE APPROACH

F I Ahmed, A M El-Tobshy, A A Mahfouz, and M M Ibrahim
Faculty of Engineering, University of Cairo, Egypt



Abstract:

The most commonly used controller for the speed control of dc motor drives is (P-I) controller. In spite of the major features of the (P-I) controller, it has some disadvantages such as: the high starting overshoot in speed, the sensitivity to controller gains and the sluggish response due to sudden change ....etc

[:=Read Full Message Here=:]

difference between chopper fed drives and converter fed drives pdf ....etc

[:=Read Full Message Here=:]