Detecting plant Diseases, quantifying and classifying digital image processing techniques

This paper provides different aspects of speed control of DC drive. Different control schemes of DC motor with proper explanation has been provided. Multi-pulse converter and firing angle control scheme has been discussed. Simulation results have been provided for the speed control aspect. It is possible to measure the speed of the motor with a tachometer or incremental encoder. These tachometers and incremental encoders produce erroneous results as a result of a variety of factors. the authors provide a strategy for compensating against imperfections in incremental encoders. In this paper, a study of several speed control systems for direct current motors is discussed in detail. This paper discusses many strategies for controlling the speed of a DC motor, including various speed control schemes. This study discusses and simulates multi-pulse converter-based DC motor speed control. The results of the simulation reveal that the motor can be controlled accurately in terms of speed. The speed of the motor can be measured with a tachometer or incremental encoder.

Section: Introductionmentioning

confidence: 99%

“…2. For power converter, thyristor-based converter circuit are widely used [9][10][11][12][13]. The speed of the motor is measured using tachometer or incremental encoder.…”

Section: Introductionmentioning

confidence: 99%

Study of Speed Control Aspects of DC Motor

Krishna

Varalakshmi

Murthy

2022

“…A review of MLI with reduced topologies have been discussed in [5][6][7][8]. The switching losses of MLI has been discussed in [9][10][11]. This paper provides the circuit analysis of multilevel inverter with reduced component count for high power applications.…”

Section: Introductionmentioning

confidence: 99%

Circuit Analysis of Multilevel Converter for High-Power Applications

Padma

Varalakshmi

Singh

2022

This paper analyses a multilevel inverter configuration which provides single-phase seven-level output. This topology partially adopts the packed u-cell structure and uses series connected DC sources to generate the required number of output voltage levels. The DC-link capacitors are not required in this topology. The operating modes and modulation scheme of this multilevel inverter are explained in detail. For applications requiring high voltage and high power, multilayer inverters (MLI) are one of the most popular choices. Higher voltage levels can be generated with MLI, despite the fact that lower rating components are used. MLI provides greater voltage level, which minimizes total harmonic distortion (THD), and MLI operates at a lower switching frequency than a standard DC-AC inverter, resulting in lower overall power consumption. There are several alternative modulation approaches for MLI that are dependent on either the fundamental switching frequency or the high switching frequency of the device.

“…The material in the insulator provides good insulation characteristics. But due to outside environment and atmosphere, gradually the insulation characteristics of the overhead insulators also degrade significantly [7][8][9][10][11]. There are broadly three different kinds of stress involved in the insulators i.e., electrical stress, mechanical stress and environmental stress.…”

Section: Introductionmentioning

confidence: 99%

“…A review of condition monitoring and diagnosis of high voltage power equipment has been discussed in [7]. The basic concepts and use of polymeric insulator has been discussed in [9]. Multitrees aging studies of polymeric insulator has been discussed in [10].…”

Section: Introductionmentioning

confidence: 99%

Effect of Pollution on Insulators in High Voltage Transmission Line

Rani

Murthy

2022

This work provides the effects of pollution on insulators in high voltage transmission line. Different stress such as electrical, mechanical and environmental stress on outdoor insulator has been discussed in this paper. Comparative performance of different insulators have been provided in this paper. . An insulator constructed of ceramic and glass is one of the components used in the construction of overhead transmission lines. In the insulator, the material used to create the insulation has excellent insulating properties. However, as a result of the outside environment and atmosphere, the insulation qualities of overhead insulators gradually deteriorate and become severely reduced. Electrical stress, mechanical stress, and environmental stress are the three types of stress that can be applied to insulators in general, according to their function. Polymeric insulators, in addition to ceramic and glass insulators, are also utilized in the building of overhead insulators to keep the electricity flowing.