This thesis presents a controller design of a three-phase bidirectional charger using optimal state feedback control AC-DC battery charger for electric vehicle. The bidirectional charger also allows to use the full electric vehicle as an energy storage system for the electric grid, charging the in the peak-of times and delivering the energy back to the…
The proliferation of electric vehicles (EVs) has seen significant growth over the last decade, mostly attributable to their environmental advantages and versatile nature. This work introduces a systematic control design approach that utilizes linear matrix inequality (LMI)-based optimization for an off-board EV charger. In this study, a cascaded control scheme is proposed, which combines proportional…
Unbalanced loads are extremely prevalent in real systems, and they create power quality issues for the UPS system. To address this problem, this work provides an optimal voltage control scheme for a three-phase inverter using the linear matrix inequality method. In addition, the purpose of this controller is to provide a well-balanced three-phase sinusoidal voltage…
This paper discusses a systematic control design for a three-phase L-filtered grid-connected inverter using linear matrix inequality-based optimization method. A state feedback control is employed to provide stability to the inverter system and with the inclusion of integral control the offset error can be eliminated. In addition, the proposed control is implemented in dq-synchronous frame…
This paper presents a linear matrix inequality-based robust control strategy for a single-phase DC-AC inverter with output LC-filter. An all-pass filter is utilized in this paper to create an artificial β-signal so that the proposed controller can be simply used in dq-synchronous frame. This proposed robust controller utilizes a state feedback control with integral action…
This paper presents a robust control strategy for an electric vehicle’s three-phase off-board bidirectional AC-DC battery charger. The conventional constant current (CC) and constant voltage (CV) charging mode are considered to provide a fast-charging performance for the batteries. The bidirectional charger also allows using of the vehicle as an energy storage system for the grid…
This work describes a robust control approach for calculating controller gain. For a three-phase dc-ac inverter with an output LC filter, robust control techniques were used. The control rule is given in a synchronous dq frame and was developed using a discrete-time state space design approach. It integrates the tracking error and uses state feedback.…
