The Active and Reactive Power Dispatch for Charging Station Location Impact Factors Analysis

With the increasing number of Electric Vehicles (EVs) in modern society, a number of challenges and opportunities are presenting themselves. For example, how to choose charging station locations to minimize the Distribution Network's (DN) power loss when a large number of EVs are connected to the DN. How impact factors, such as different load patterns, EVs’ charging locations and network topology, affect charging station location is becoming vital. In this paper a new charging station location methodology informed by impact factor analysis is proposed by using the Active and Reactive Power Dispatch of charging stations in terms of power loss minimization. Results for the 36 DN with three different scenarios are presented. In addition, a more realistic model based on EV's daily travel patterns is built to illustrate how these impact factors affect charging station location. It is demonstrated that the optimal charging station location in terms of power loss minimization can be found by using the new methodology, and it is not affected by the EVs’ charging location and load patterns, it is affect by the network topology

Optimizing broadband harmonic filter design for adjustable speed drive systems

A novel design method of the improved broadband harmonic filter for diode rectifier type adjustable speed drives using genetic algorithm is presented. The design yields high input and output power quality while reducing the filter size, cost and avoiding resonance problems. Results are illustrated using computer simulations and laboratory experiments

Comparison of different common passive filter topologies for harmonic mitigation

This paper will present a performance comparison of different common passive harmonic filters for three-phase diode-rectifier front-ends found in adjustable speed drives. The comparison analyzes and discusses the input power factor, input current total harmonic distortion, rectifier voltage regulation, line voltage unbalance sensitivity, size, energy efficiency and cost. The issues related to harmonic-excited parallel or series resonance are addressed, and unbalanced operation performance is investigated. The study is based on detailed analysis and computer simulations

Comparison of different common passive filter topologies for harmonic mitigation

This paper will present a performance comparison of different common passive harmonic filters for three-phase diode-rectifier front-ends found in adjustable speed drives. The comparison analyzes and discusses the input power factor, input current total harmonic distortion, rectifier voltage regulation, line voltage unbalance sensitivity, size, energy efficiency and cost. The issues related to harmonic-excited parallel or series resonance are addressed, and unbalanced operation performance is investigated. The study is based on detailed analysis and computer simulations

Optimizing broadband harmonic filter design for adjustable speed drive systems

A novel design method of the improved broadband harmonic filter for diode rectifier type adjustable speed drives using genetic algorithm is presented. The design yields high input and output power quality while reducing the filter size, cost and avoiding resonance problems. Results are illustrated using computer simulations and laboratory experiments

Sliding-mode control, dynamic assessment and practical implementation of a bidirectional buck/boost DC-to-DC converter

Bidirectional power converters are frequently applied when interfacing energy-storage devices such as supercapacitors, uninterruptible-power-supply batteries and generators, electric-vehicle motors and renewable-energy-system generators. This paper presents a bidirectional half bridge DC/DC converter, featuring a novel sliding-mode controller, input and output short-circuit protection and a wide input voltage operating range. The ability to achieve step-up or step-down voltage conversion and accommodate a wide input voltage variation makes this design particularly useful for interfacing energy storage devices whose voltage varies widely with state of charge such as supercapacitor modules. The control theory and design methodology are described and converter performance is assessed at realistic operating levels by simulation and experiment. Benefits are shown to include good performance over a wide range of operating conditions and a relatively simple controller-hardware requirement