Essays on Power Factor

Introduction

Power quality is an essential factor as far as performance of the electrical machines and equipment are concerned. Quality plays an integral role in ensuring reliability and satisfactory service by improving the transmission and distribution of electric power. In order to serve a huge section of the world with electrical power, quality is paramount in order to reduce losses during transmission and distribution. IEEE defines power quality as the deviation of current and voltage from the ideal to the actual realization. It factors in the concept of ensuring high standard powering and grounding of the electrical equipment for the ...

Abstract

Permanent magnet synchronous motors (PMSM) are a type of motors that have permanent magnets mounted on the rotors instead of the rotor windings. This particular design gives the motor a few advantages over ordinary induction synchronous motors. The magnets attached to the rotor do not require excitation, which reduces the power consumption in PMSM. This gives the motor high operational efficiency and reduces the motor active diameter. PMSM are therefore associated with applications that require high torque but have limited operation space. The permanent magnets suffer from flux leakage and are therefore aligned in a pattern that minimizes flux ...

Introduction

Over time, the growth of a city of a locality leads to the increase in the demand for electricity. The growth in population and the commercial activity puts pressure on the national grid. Without commensurate investments in the generation of power, the increase in demand results in shortages. To supplement the shortage of electricity in the region, more power can be brought in from the generation sources. However, this is complicated if the power generation plants are located far away. This is because more high voltage overhead transmission lines would be required. The Ministry for the Environment (2010) finds ...

Lab Report 7

Introduction The electrical motor is the device, which converts electrical energy into the mechanical energy. It is must to analyze the characteristics of electric motor. The electric motor is always considered as the dynamic device, which changes its performance influenced by various factors. It is necessary to analyze the important electrical parameters of the electric motor, in order, to use the electrical motor for the particular applications. The electric motor is used in the applications like pumping, home appliances, lifts, cranes, etc. This report discusses about the construction of the electrical motor, and mainly, it discusses about the ...

Introduction

Efficient energy utilization is an important aspect of human life. The principle of conservation of energy states that energy can never be created nor destroyed. Thus, it is essential to utilize the energy available for us effectively and efficiently. Energy can be transformed from one form to another by use of appropriate transducers. When designing a house, it is essential to do it with the greatest regard to efficient energy use as well as safety to the environment. House designers should always come up with designs that promote efficient energy use. For instance, utilization of renewable energy should be maximized. ...

Answers to Questions

Block 1: Problems, Challenges and Opportunities (Parts 1 and 2) T207 Engineering: Mechanics, Materials, Design Answer 1(a) The three categories of Engineering Solutions are Innovation by Context, Innovation by Development and finally Routine Solutions. Innovation by Context will have inventions in their ranks, which relies on a new technology to bring about a solution to a problem. The ball point pen(deviating away from the liquid ink), the Gore-Tex® Fabric which is not a fabric but layers of artificial organic material making it breathable, waterproof one-way,durable,etc. and the Dyson™ Vacuum Cleaner which uses cyclonic vacuum technology will fall ...

Lab Report

Objective: To explore the characteristics of three single-phase transformers in a three-phase configuration. Figure 1: Lab 1, Diagram. - Star- Star (Y-Y) Connection In star- star or Y-Y connection, each phase is 120° out of period with the extra two periods. In the same way, each secondary winding is 120° out of phase with the other two phases. Every primary winding is magnetically connected with secondary winding using the common leg. When talking about primary to secondary phases we will see that there is no phase difference in primary-secondary connections. It simplifies that both, primary and derived ...

Introduction

The aim of this essay is to determine the rise of China as a major in the Pacific and the analytical content in its military, economic and trade behavior, inevitably captured in the global scale. The research examines the tension that is increasingly attributed to the Sino US relations on Australia’s strategic environment. The study go beyond the analysis of the stress factors that are attributed to Australia’s international partnering concepts and the changes experienced through the decade in its underlying relations with both the US and China. In this scale of analysis, the longer measures in the ...