Abstract
ABSTRACT This thesis develops a three-phase switched-reluctance motor (SRM) drive with battery/super-capacitor hybrid energy for electric vehicle (EV). In addition to normal EV operation, it possesses grid-to-vehicle (G2V) and vehicle-to-home (V2H) functions with integrated schematics constructed using SRM drive embedded components. In the developed motor drive, the asymmetric bridge converter fed SRM is powered by the battery through an interleaved DC/DC boost converter. As to the incorporated super-capacitor (SC), it is interfaced to the SRM drive DC-link via a DC/DC buck converter, and it is connected to the battery bank by a diode. This arrangement allows the energy conversions during intermittent and frequent short-duration acceleration/ deceleration be handled by the SC. It can efficiently reduce the discharging and charging times of the battery, hence the life of battery can be extended. Good driving operation and regenerative braking performance of the established EV motor drive are achieved by properly treating the switching and dynamic controls, commutation instant setting and voltage boosting. In idle condition, through properly arranging the embedded motor drive power devices, the G2V battery charging with good line drawn power quality can be operated. Its power circuit consists of a full-bridge boost switch-mode rectifier (SMR) or a bridgeless boost SMR and a buck DC/DC converter based charger. As to the V2H operation, a single-phase three-wire (1P3W) inverter with boosted DC-link voltage from battery is constructed to yield the 60Hz 220V/110V AC voltage outputs for domestic appliances. By applying differential mode (DM) and common mode (CM) control approaches, good output voltage waveforms are generated under unknown and non-linear loads. Key words: SRM, EV, EV load, battery, regenerative braking, super-capacitor, interleaved converter, single-phase three-wire inverter, power factor correction, grid-to-vehicle, vehicle-to-home.