scholarly journals Modeling and Control of a Multifunctional Three-Phase Converter for Bidirectional Power Flow in Plug-In Electric Vehicles

Energies ◽  
2020 ◽  
Vol 13 (10) ◽  
pp. 2591
Author(s):  
Reza Sabzehgar ◽  
Yaser M. Roshan ◽  
Poria Fajri
Keyword(s):  
Electric Vehicles ◽  
Power Flow ◽  
Sliding Mode ◽  
Nonlinear Controller ◽  
Modeling And Control ◽  
Vehicle To Grid ◽  
Operating Modes ◽  
Three Phase ◽  
Phase Converter ◽  
Bidirectional Power Flow

A nonlinear sliding-mode controller for a three-phase converter, utilized in plug-in electric vehicles (PEVs), is proposed in this paper. The proposed controller enables the utilized converter to perform multiple functions during different operating modes of the vehicle, i.e., grid-to-vehicle (G2V) and vehicle-to-grid (V2G) modes. The bidirectional three-phase converter and the proposed controller operate as a power factor correction circuit, bridgeless boost converter, and rectifier during G2V mode (i.e., plug-in charging), and it operates as a conventional single-stage inverter during V2G mode. The stability analysis of the proposed controller is performed by defining a proper Lyapunov function. The functionality of the proposed nonlinear controller is first evaluated through simulation studies. The feasibility and effectiveness of the proposed control strategy is then validated using an industrial control card through a hardware-in-the-loop (HIL) experimental testbed.

scholarly journals A Three-Phase Bidirectional Grid-Connected AC/DC Converter for V2G Applications

2020 ◽  
Vol 2020 ◽  
pp. 1-12
Author(s):  
Jingang Han ◽  
Xiong Zhou ◽  
Song Lu ◽  
Pinxuan Zhao
Keyword(s):  
Electric Vehicles ◽  
Control Strategy ◽  
Power Flow ◽  
Reactive Power ◽  
Vehicle To Grid ◽  
Experiment Platform ◽  
Three Phase ◽  
Simulation And Experiment ◽  
Bidirectional Power Flow ◽  
The Mathematical Model

The smart grid and electric vehicles (EVs) are widely used all over the world. As the key role, the Vehicle-to-Grid (V2G) has been attracting increasing attention. The bidirectional grid-connected AC/DC converter is one of the indispensable parts in the V2G system, which can realize bidirectional power flow and meet the power quality requirements for grid. A three-phase bidirectional grid-connected AC/DC converter is presented in this paper for V2G systems. It can be used to achieve the bidirectional power flow between EVs and grid, supply reactive power compensation, and smooth the power grid fluctuation. Firstly, the configuration of V2G systems is introduced, and the mathematical model of the AC/DC converter is built. Then, for bidirectional AC/DC converters, the grid voltage feedforward decoupling scheme is applied, and the analysis of PI control strategy is proposed and the controller is designed. The system simulation model is established based on MATLAB/Simulink, and the experiment platform of the bidirectional grid-connected converter for V2G is designed in lab. The simulation and experiment results are shown, and the results evaluate the effectiveness of the model and the performance of the applied control strategy.

scholarly journals Theoretical Analysis of a Three-Phase Bidirectional Isolated DC-DC Converter Using Phase-Shifted Modulation

2018 ◽  
Vol 9 (2) ◽  
pp. 495 ◽  
Author(s):  
Zhong Yih Tan ◽  
Nadia Mei Lin Tan ◽  
Ida Suzana Hussain
Keyword(s):  
High Frequency ◽  
Power Flow ◽  
Lag Phase ◽  
Dc Voltage ◽  
Operating Modes ◽  
Three Phase ◽  
Phase Shift Angle ◽  
High Frequency Ac ◽  
Bidirectional Power Flow ◽  
Shift Angle

<span lang="EN-US">A three-phase bidirectional isolated dc-dc converter consists of two six-pulse two-level active converters that enable bidirectional power flow by introducing a lag phase-shift angle of one converter with respect to the other converter. This paper explains the operating modes of a three-phase bidirectional isolated dc-dc converter in detail, taking into account the transfer of energy between the dc voltage sources and high-frequency ac inductances in the three-phase bidirectional isolated dc-dc converter. The power flow of the dc-dc converter is also examined based on the operating modes.</span>

Conversion System for Grid-to-Vehicle and Vehicle-to-Grid Applications

2019 ◽  
Vol 17 (1) ◽  
Author(s):  
Diogo Marinho ◽  
Miguel Chaves ◽  
Paulo Gambôa ◽  
José Lopes
Keyword(s):  
Power Flow ◽  
Energy Use ◽  
Power Grid ◽  
Storage System ◽  
Energy Storage System ◽  
Voltage Source ◽  
Voltage Source Inverter ◽  
Vehicle To Grid ◽  
Conversion System ◽  
Bidirectional Power Flow

Abstract The increasing use of electrical vehicles aroused the problem of batteries charging and the consequent interface with the power grid. Commercial charging solutions are mostly based on unidirectional power flow converters; however, bidirectional power flow converters are an interesting solution when considering smart microgrid applications, with benefits in efficient energy use. In this context, the paper presents a bidirectional power flow converter for grid-to-vehicle (G2V) or vehicle-to-grid (V2G) applications. The conversion system is based on a three-phase voltage source inverter (VSI), which assures the grid connection with a unitary power factor. The direct current (DC) bus of the voltage source inverter is connected to a DC/DC converter that controls the battery power flow. This conversion system can operate in G2V mode when charging the battery or in V2G mode when working as an energy storage system and the power flow is from the battery to the power grid. The conversion system model is presented as well as the control strategy proposed. Simulation and experimental results showing voltages and currents in the circuit are also presented.

Modeling, Control and Regenerative Brakingof BLDC Machines in Electric Bycicles

2020 ◽  
Author(s):  
Elmer O. H. Catata ◽  
Pedro J. dos Santos Neto ◽  
Tárcio A. S. Barros ◽  
Ernesto Ruppert Filho
Keyword(s):  
Electric Vehicles ◽  
Energy Resources ◽  
Motor Vehicles ◽  
Regenerative Braking ◽  
Brushless Dc Motor ◽  
Renewable Energy Resources ◽  
Brushless Dc ◽  
Three Phase ◽  
Phase Converter ◽  
Comprehensive Modeling

The autonomy of electric vehicles is under investigation by the scientific community,in which different solutions based on renewable energy resources, such as the photovoltaic, areproposed. A solution under study is the utilization of regenerative braking developed by theelectric motor vehicles. In this work, the addition of a regenerative braking is proposed aimingto increase the autonomy of electric bicycles. A two level, three-phase converter is applied todrive a brushless DC motor (BLDC). A comprehensive modeling of current and speed control arepresented in order to operate the machine in quadrants I and IV. The behavior of the Lithiumbattery charge is observed through its state-of-charge (SOC). Simulation results were obtainedby means of the SimPowerSystemsR©/Matlab/SimulinkR©software.

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