Impact of demand response management on chargeability of electric vehicles

AbstractLarge-scale penetration of electric vehicles (EVs) would significantly increase the load requirements of buildings in highly urbanized cities. EVs exhibit higher degree of charging flexibility when compared to other interruptible loads in buildings. Hence, EVs can be assigned lower priority and interrupted before interrupting any other loads. Any temporary interruption will have minimum impact on EV owner's satisfaction/comfort. However, it should be ensured that the EVs could be charged to the owner's required state of charge (SOC) by the time of departure. The scheduling algorithms that are used to manage the EV charging process ensure that the charging requirements are fulfilled even when there are temporary interruptions. The capability of the scheduling algorithms to manage mismatches decreases with the decrease in time available for charging. In this paper, the impact of demand response management (DRM) on the chargeability of the EVs while using different priority criteria is examined. Subsequently, the proportion of interruption for each EV with different priority criteria and the need for determining the chargeability of EVs before shedding them are studied. A scheduling driven algorithm is proposed which can be used for determining the chargeability of EVs and can be used in combination with DRM

CONTROL OF HIGH TORQUE PERMANENT-MAGNET MOTORS FOR DIRECT DRIVE APPLICATIONS

Master'sMASTER OF ENGINEERIN

Modelling and characterization of power semiconductor and electromechanical devices for the design of power electronics and drive systems

In this project, a number of power semiconductor and electrochemical devies are modelled for the purpose fo power electronics circuit simulation.RG 32/9

Development of power electronics and control systems II

A novel power factor and input current THD improvement scheme for a suppressed-link rectifier-inverter structure has been suggested and is verified to be functional over an extended converter operating range. A prototype of the converter has also been designed, built and tested.RGM 12/9

Development of high-power multi-output piezoelectric transformers

Piezoelectric transformers have many excellent advantages compared with the traditional electromagnetic transformers. However, the poor power management ability of piezoelectric transformer limited its development greatly. Furthermore, in order to miniaturize the power supply further, it is very necessary to improve the power density of the piezoelectric transformer and make one transformer can supply several different outputs for the system. The main results of this study are summarized as follows. High power piezoelectric transformers with dual and triple outputs were developed and investigated. They operate at the thickness shear vibration mode and are able to provide maximum total output power of more than 160 W with a temperature rise less than 20oC. It is the highest output power of PTs in the world up to now. The maximum efficiency of piezoelectric transformer with dual outputs is 98%. The voltage gains of the two outputs are 0.76 and 0.51 at the frequency of 278 kHz, respectively. The maximum efficiency of piezoelectric transformer with triple outputs is 95.7%. The voltage gains of the three outputs are 0.75, 0.84 and 0.39 at the frequency of 278 kHz, respectively. Compared with most of the other low voltage piezoelectric transformers, these transformers are competitive in practical applications because of the high power, multiple outputs, simple structure and flexibility in design