Application And Investigation Of Control Framework Structures For Electric Drives Furnished With Changeless Magnet Synchronous Machines

TM4, the industrial partner, is a leading manufacturer and supplier of traction motors and drives for electric vehicle industry in Canada. As a drive manufacturer, they always aim to provide solution which is energy efficient with small footprint. In order to achieve this, they always look for alternative software and hardware solutions. Software modifications, which may improve the system performance in comparison to their existing drive control strategy without increasing the size of the system, are always sought after for continuous improvement of their system. In this regards, the internship is relevant to them for exploring alternative control strategies.

Electrical vehicle technology has been present for a while and is a proven technology that need only reshaping to meet the global need. Though, in the past, the technology had failed to compete with the internal combustion engine due to initial cost, the technology has done well in recent years. Electric vehicle, EV, ability to reduce the emission of greenhouse gases, like carbon and carbon dioxide, and the advantages it enjoys, such as low maintenance and running cost, can enhance its market competitiveness. However, as experts try to make its charging system more efficient and its ability to store a charge more long lasting, the global need continues to rise. This research proposal, therefore, aimed at addressing an issue like government involvement, can enhance improved use of EV, development of better EV batteries, energy management system and fast charging which can help enhance the use of Electrical Vehicles and how electric vehicle drive train and the battery can be redesigned to make it affordable.

Fig. 11 shows a comparison of DPWM2O, DPWMLPF2 and GDPWMO at 0.4 modulation index. The inverter is operating with 160 Hz fundamental frequency and 7.68 kHz switching frequency. The output power factor angle is 45°. It can be seen that each strategy produces 32 pulses in one cycle. However, the clamping interval of the GDPWMO strategy is perfectly aligned with the line current peaks, whereas the DPWM2O and DPWMLPF2 strategies incurs switching instances around the current peaks.

Electrical vehicles technology has been present for a while and is a proven technology that need only reshaping to meet the global need. Though, in the past, the technology had failed to compete with the internal combustion engine due to initial cost, the technology has done well in the past few years. Electric vehicle ability to reduce the emission of greenhouse gases like carbon and carbon dioxide and the advantages it enjoys such as low maintenance and running cost can enhance it market competitiveness. However, as experts try to make its charging system more efficient and its ability to store charge more long lasting, the global need continue to rise. The research proposal, therefore, aim at addressing an issue like government involvement can enhance improved use of EV, development of better EV batteries, energy management system and fast charging can help enhance the use of Electrical Vehicles and how electric vehicle drive train and the battery can be redesigned to make it affordable.

Brushless permanent magnet DC motors are being manufactured and used increasingly in everything from home appliances to automobiles due to their inherent advantages. The merits of these motors could be enhanced further according to another design approach method which alters the typically used winding parts for low to medium power range motors. This paper deals with the high power brushless DC motor used for traction in a 48 V golf cart system.

In this work we look at the past of the motor vehicle. We recognize Henry Ford and his creation of the first mainstream car. We praise his pricing strategy used to make this car a household product. We dig to find out which manufacturer brought us the conventional car control layout. Then we jump ahead to our modern age of cars and look at the ways engineers are finding ways to replace mechanical systems with electric ones. We then delve into the world of alternative power methods, primarily the hybrid, hydrogen, and electric options. Lastly we touch base on the enthusiasts concern that the car scene is dying.

The advantages of Field Oriented Control are transformation of a complex and coupled AC model into a simple linear system , independent control of torque and flux, fast dynamic response , good transient and steady state performance ,high torque and low current at start up and high Efficiency[2].

The purpose of this report is to analyze, compare, and determine the capability of electric-powered vehicles as a replacement for the current diesel-powered vehicles.

medium voltage, high-power applications (e.g. industrial drives, and photovoltaic systems) three-level inverters are used extensively [1, 2]. Recently, the application of these threelevel inverters in low-voltage, high-power traction applications have also been introduced [3, 4]. Amongst different variants of three-level inverter topologies [5], the T-type Neutral-Point- Clamped (T-NPC) inverter, as shown in Fig. 1, has been shown to be the most promising solution for low-voltage, high-power traction applications [4]. Each phase-leg of this topology consists of two devices connected to the neutral-point of the DC-link (inner devices) and two devices placed similar to a conventional two-level inverter (outer devices).

Instructor’s Manual to accompany Electric Machinery Fundamentals, Fourth Edition Copyright  2004 McGraw-Hill, Inc. All rights reserved. Printed in the United States of America. No part of this book may be used or reproduced in any manner whatsoever without written permission, with the following exception: homework solutions may be copied for classroom use. ISBN: ???

currents) from stationary reference frame to torque and flux producing currents components in rotating reference frame. The vector control of the PM synchronous motor is derived from its dq dynamic model. Considering the currents as inputs, the three currents are:

Based on the modelling of SRM magnetic circuit, three models of SRM are found in literature: linear model, nonlinear model without mutual inductances, and nonlinear model with mutual inductances. Linear models in [6,7] are designed and simulated readily. On contrast nonlinear models are obtained after a large set of experimental tests to obtain the magnetic characteristics [8-15], or from a finite element method (FEM) analysis [16-18], which takes into consideration the saturation of rotor and stator materials. The nonlinear model is preferable when accurate precision is wanted. The converter used with SRM requires at least one switch per phase due to unidirectional phase current. This is a big advantage when compared to the converters for AC motor drives. Some configurations of converters used in SRM drives are presented in [19-22]. The half-bridge asymmetric converter is the most widely used for SRM drive applications, because of its high

In applications operating from AC line voltages of 600VAC and less, IGBTs with blocking voltage ratings of up to 1400V have provided an efficient low cost means of constructing high performance voltage source inverters. In higher voltage applications GTOs (Gate Turn-Off thyristors) have been used but their limited switching frequency of 300Hz or so, offers little advantage when compared to other circuit topologies. Clearly, a higher performance, high power semiconductor device is needed. Today, newly commercialized high voltage IGBTs with blocking voltages to 3300V

This paper compares the characteristics and performance of IM, SRM and interior permanent magnet drive motor (IPM). HEVs were not widely available until the launch of Toyota Prius in 1997 in Japan, which was followed by Honda Insight in the year 1999. The data related to design for IPM is taken from the report on Toyota Prius HEV 2004 [1] and the comparison done with IM uses same design of the stator. Mostly it is said that PM motor are the best match for the HEVs in terms of performance and efficiency. This is despite that induction motors and SRM have been used in cars like Tesla and General Motors. Also the SRM and IM have an advantage over PM motor in terms of manufacturing cost and durability. SRM is the perfect magnet free alternative as suggested in [2] and offers zero field coasting and controllable flux. Hence, the IM and SRM offer more flexibility of controlling flux.¬¬

During the last decade, permanent magnet synchronous motors have been used widely in the industry to replace DC motors and induction machines. The main characteristics of these motors are the low inertia, the high efficiency, power density and reliability. Due these