Advantages And Disadvantages Of Electric Drive System

Coffman, Makena, Paul Bernstein, and Sherilyn Wee. "Electric vehicles revisited: a review of factors that affect adoption." Transport Reviews, vol. 37, no. 1, (2017): 79-93.

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.

Using Field Oriented Control, current control is largely unaffected by speed of rotation of the motor[6].In the scheme of filed oriented control motor currents and voltages obtained from the motor are transformed into d-q reference frame. Measured currents from three stator phases these currents which are now in the stator reference frame are converted into two phase using Clarke transformations which are further converted into the corresponding rotor reference frame using Park transformation. The resultant current obtained is dc which is easier for the PI controllers to operate.

Switching power converters offer an easy way to regulate both the frequency and magnitude of the voltage and current applied to a motor shown in fig(1). As a result much higher efficiency and performance can be achieved by these motor drives with less generated noises[3].

This text will specifically discuss sections of NFPA 79: Electrical Standard for Industrial Machinery, chapters 9 and 10. This is not to say that the other chapters are insignificant. The other chapters will be used in support of 9 and 10. Along with this support, as with any electrical installation, NFPA 70: National Electric Code will be used as reference.

The company believes that after a century of invention of internal combustion engine, automobile manufacturers face a wide challenge in the industry. The gasoline fuelled car has created environmental issues and forces the nation to import more oil from foreign nation’s thus selling fuel at volatile prices to the consumers. Thus undertaking the above problems company started manufacturing electric powered vehicles that has same specifications compared to a gasoline powered engine.

Much advancement have been made in the world electric powered cars. People think that electric cars are a new thing but they were very popular in the 1900s until there was a sudden rise in petrol engines accompanied by batteries killed electric cars by 1920. However with the recent improvements in battery technology and power electronics electric cars have made a strong comeback, in addition to that their price, practicality, and the promise of the vehicle not polluting the environment in the ways that the gas powered cars do have made them very popular among today’s youth.

Nowadays, the using of electro car becomes more popular over the world. Most of the people will drive for work or travel in Zhuhai, and the using of fossil fuel car can cause environmental problem such as climate change, global warming. Environmental problems are more serious than before. Air pollution could be caused by releasing off-gas from fuel vehicle. The using of electro car is not only benefit for the environmental problem，but also good for economic development. On the other hand, there are still a lot of problems need to be solved if we want to popularize the use of electro car in Zhuhai, such as the limitation of driving distance and long charging time. These kinds of disadvantages will affect the citizen’s willingness of choosing electro car. So we want to find out the factors that influence Zhuhai citizen willingness of using electro car.

Induction motor phase control is one of the ordinary and uninterested method of electronic AC power control [22]. This method is presented in Fig 2.2 [18, 23]. At the start position of the motor and during the first half cycle operation of the AC sine wave, the switch in the electronic circuit becomes opened

Today’s standard cars are an affordable and a simple way of transportation, but electric cars are getting much more advanced making them easier for travel and more affordable, thus, when considering what to buy, one needs to consider the strengths and weaknesses of both. The standard cars have always been the winner, especially with all new luxury, and their prices, making it harder for other competitors to compete with them. Surprisingly electric cars are not so different when compared to the new and improved standard cars sharing the same features, features that most people do not know about and should consider checking them out when buying a new car.

This project aim name shows that the speed of lift by dc motor which controlled by armature voltage control method. These project help in our daily life as well as transport residents to different floors, hospital emergency etc. In these project the conversion of electric energy into mechanical energy by the dc motor and these mechanical energy used in the lift. The speed of lift varies by the armature voltage of dc motor. The DC motor which is excited by dc supply using inverter. The dc motor start rotating. The shaft is connected from dc motor to the pulley. so the mechanical energy supply to the pulley and pulley start rotating. So the lift move from upward and downward with help of rotating pulley. Reverse and forward speed of dc motor which is change by the change over switch. the speed increase and decrease or control according to loaded lift by the field regulator. There are some condition we have to maintain as well as rated capacity in weight, maximum load etc.

This thesis deals with the design and analysis of control system structures for electric drives equipped with permanent magnet synchronous machines (PMSM) in automotive application.With the increasing popularity of multi-level inverters, the room for improvement of the performance of voltage source inverters has continuously been tested for various applications. The rapid development of high switching frequency power electronics in the past decade leads towards wider application of voltage source inverters in AC power generation. Therefore, this prompts the need for a modulation technique with less total harmonic distortion, fewer switching losses, and wider linear modulation range.The present thesis highlights the comparison of the conventional two-level inverter and the three-level diode clamped inverters for the application in automotive industry.

BRIEF DESCRIPTION OF MOTORS AND DRIVES: In this segment, I will briefly review the diverse types of variable-speed drives used in the industry. For the most part, electronic AC and DC drives find their domination in manufacturing and commercial HVAC uses of today. This brief look at drive machineries will assist you, should you encounter any of these types in the future. In addition, I will also review the benefits and limits of each type.

The two major classifications of the motors are AC and DC motors. Only the DC motors clearly fits our system because the AC motors are

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