Abstract:
This paper deals with the direct torque control of capacitor multilevel VSI actuators. The active control strategy high voltage I high power induction motors fed by floating egy for well-balancing the capacitor voltages is presented highlighting an optimal pattern. The efficiency of this approach is compared to the well-known passive method and it is illustrated by simulation. In the next section, a controlled cycle based algorithm is proposed as an attractive solution for a high performance torque control ....etc

[:=Read Full Message Here=:]

viva questions on multilevel inverters

Inverter:

The Inverter is an electrical device which converts direct current (DC) to alternate current (AC). The inverter is used for emergency backup power in a home. The inverter is used in some aircraft systems to convert a portion of the aircraft DC power to AC. The AC power is used mainly for electrical devices like lights, radar, radio, motor, and other devices.

Multilevel Inverter:

Now a day s many industrial applications have begun to require high power. Some appliances in the industries howev ....etc

[:=Read Full Message Here=:]

TO DEVELOP A SPEED CONTROL SYSTEM FOR AC MOTOR USING MULTILEVEL (3,5,7) INVERTERS.



INTRODUCTION

Dc motor have been used during the last century in industries for variable speed control applications because its flux and torque can be controlled easily changing the field and armature current respectively.
Farther four quadrant operation of induction motor was achieved.
Induction motor popularly used in industries due to ruggedness and robustness.
To reduces the harmonics we use the multilevel inverter. ....etc

[:=Read Full Message Here=:]

MULTILEVEL INVERTERS



Main feature

Ability to reduce the voltage stress on each power device due to the utilization of multiple levels on the DC bus
Important when a high DC side voltage is imposed by an application (e.g. traction systems)
Even at low switching frequencies, smaller distortion in the multilevel inverter AC side waveform can be achieved (with stepped modulation technique)
Diode-clamped multilevel inverter (DCMI)
Extension of NPC
Based on concept of using diodes to limit power devices ....etc

[:=Read Full Message Here=:]

Abstract
Multilevel inverter technology has emerged recently
as a very important alternative in the area of high-power
medium-voltage energy control. This paper presents the most
important topologies like diode-clamped inverter (neutral-point
clamped), capacitor-clamped (flying capacitor), and cascaded
multicell with separate dc sources. Emerging topologies like
asymmetric hybrid cells and soft-switched multilevel inverters are
also discussed. This paper also presents the most relevant control
and modulation methods developed fo ....etc

[:=Read Full Message Here=:]

ppt related to induction motor drive using seven level multi level inverter for energy saving in variable torque load applications
PPT RELATED TO INDUCTION MOTOR DRIVE USING SEVEN LEVEL MULTI LEVEL INVETER FOR ENERGY SAVING IN VARIABLE TORQUE LOAD APPLICATIONS ....etc

[:=Read Full Message Here=:]

Diode Clamped Multilevel Inverter Fed Induction Motor


INTRODUCTION

Two level voltage source inverters produce an output voltage or a current with levels either 0 or Vdc

In high power and high voltage application these two level inverters, however, have some limitations in operating at high frequency mainly due to switching losses and constraints of device ratings.

Unique structure of ML-VSIs allow them to reach high voltages with low-harmonics without use of transformers ....etc

[:=Read Full Message Here=:]

sir,
i need five level program(2 H-bridge) using pic microcontroller(16F877A). ....etc

[:=Read Full Message Here=:]

to get information about the topichysteresis modulation of multilevel inverters full report ppt and ralated topic refer the page link bellow

http://seminarsprojects.net/Thread-multiband-hysteresis-modulation-and-switching-characterization-for-sliding-mode ....etc

[:=Read Full Message Here=:]

i want performance analysis of multilevel inverter using simulink documentation please ....etc

[:=Read Full Message Here=:]