Bidirectional Buck-Boost Integrated Converter for Plug-in Hybrid Electric Vehicles (original) (raw)
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Integrated buck and boost converter for a universal battery charger of an Electric Vehicle
E3S Web of Conferences, 2021
A two-stage converter connects the input grid voltage to a pack of batteries with the voltage varying between 48-400 V, depending on the size and the range of the vehicle, with battery-operated electric and Plug-in Hybrid Electric Vehicles (PHEVs). This article offers a unique built-in converter that can interface with both high voltage (HV) and low voltage (LV) batteries. For all car architectures a universal charger that can accommodate this wide range of battery pack voltages is suitable. The novel integrated buck and boost converter (IBBC) is the proposed converter supplied using AC-DC driver at the front end mode. The main objective of this paper is to show a universal battery charger for an EV with a high power factor (PFC) and a small total harmonic distortion (THD) in addition to the high power density. A PFC converter is formed without any auxiliary circuit to balance the output voltage dependence of the battery against fluctuations in the ac grid input voltage, which in tu...
2011
The plug-in hybrid electric vehicles (PHEVs) are specialized hybrid electric vehicles that have the potential to obtain enough energy for average daily commuting from batteries. The PHEV battery would be recharged from the power grid at home or at work and would thus allow for a reduction in the overall fuel consumption. This paper proposes an integrated power electronics interface for PHEVs, which consists of a novel Eight-Switch Inverter (ESI) and an interleaved DC/DC converter, in order to reduce the cost, the mass and the size of the power electronics unit (PEU) with high performance at any operating mode. In the proposed configuration, a novel Eight-Switch Inverter (ESI) is able to function as a bidirectional single-phase AC/DC battery charger/ vehicle to grid (V2G) and to transfer electrical energy between the DC-link (connected to the battery) and the electric traction system as DC/AC inverter. In addition, a bidirectional-interleaved DC/DC converter with dual-loop controller...
Journal of Power Electronics, 2011
The plug-in hybrid electric vehicles (PHEVs) are specialized hybrid electric vehicles that have the potential to obtain enough energy for average daily commuting from batteries. The PHEV battery would be recharged from the power grid at home or at work and would thus allow for a reduction in the overall fuel consumption. This paper proposes an integrated power electronics interface for PHEVs, which consists of a novel Eight-Switch Inverter (ESI) and an interleaved DC/DC converter, in order to reduce the cost, the mass and the size of the power electronics unit (PEU) with high performance at any operating mode. In the proposed configuration, a novel Eight-Switch Inverter (ESI) is able to function as a bidirectional single-phase AC/DC battery charger/ vehicle to grid (V2G) and to transfer electrical energy between the DC-link (connected to the battery) and the electric traction system as DC/AC inverter. In addition, a bidirectional-interleaved DC/DC converter with dual-loop controller is proposed for interfacing the ESI to a low-voltage battery pack in order to minimize the ripple of the battery current and to improve the efficiency of the DC system with lower inductor size. To validate the performance of the proposed configuration, the indirect field-oriented control (IFOC) based on particle swarm optimization (PSO) is proposed to optimize the efficiency of the AC drive system in PHEVs. The maximum efficiency of the motor is obtained by the evaluation of optimal rotor flux at any operating point, where the PSO is applied to evaluate the optimal flux. Moreover, an improved AC/DC controller based Proportional-Resonant Control (PRC) is proposed in order to reduce the THD of the input current in charger/V2G modes. The proposed configuration is analyzed and its performance is validated using simulated results obtained in MATLAB/ SIMULINK. Furthermore, it is experimentally validated with results obtained from the prototypes that have been developed and built in the laboratory based on TMS320F2808 DSP.
Advanced Integrated Bidirectional AC/DC and DC/DC Converter for Plug-In Hybrid Electric Vehicles
IEEE Transactions on Vehicular Technology, 2009
Hybrid electric vehicle (HEV) technology provides an effective solution for achieving higher fuel economy, better performance, and lower emissions, compared with conventional vehicles. Plug-in HEVs (PHEVs) are HEVs with plug-in capabilities and provide a more all-electric range; hence, PHEVs improve fuel economy and reduce emissions even more. PHEVs have a battery pack of high energy density and can run solely on electric power for a given range. The battery pack can be recharged by a neighborhood outlet. In this paper, a novel integrated bidirectional ac/dc charger and dc/dc converter (henceforth, the integrated converter) for PHEVs and hybrid/plug-in-hybrid conversions is proposed. The integrated converter is able to function as an ac/dc battery charger and to transfer electrical energy between the battery pack and the high-voltage bus of the electric traction system. It is shown that the integrated converter has a reduced number of high-current inductors and current transducers and has provided fault-current tolerance in PHEV conversion.
Non-Isolated Multiphase Buck-Boost Converter Design for Electric Vehicle Application
Since energy conservation is one of the important issue now days and making our planet pollution free. For these purposes researchers are suggesting alternatives. Battery fed motor vehicles is one of the emerging option rather than conventional fuel vehicles. Bidirectional DC-DC converters are now mostly used in electric vehicles. The main reason behind this is to operate motor in two quadrants as motoring and regenerative for making efficient operation. Bidirectional DC-DC converter consists of buck and boost converter. During motoring mode energy is supplied through a battery and in regenerative mode battery is charged through a DC link created. This paper primarily gives attention on control strategy used for operation. In this gate complimentary control used to trigger initially turned off switch and divert current through anti parallel connected diode of initially active switch so that main switch can be triggered under zero voltage switching. Keywords— Bidirectional DC-DC conv...
Non-Isolated Multiphase Buck-Boost Converter Design for Electric Vehicle Applications
Since energy conservation is one of the important issue now days and making our planet pollution free. For these purposes researchers are suggesting alternatives. Battery fed motor vehicles is one of the emerging option rather than conventional fuel vehicles. Bidirectional DC-DC converters are now mostly used in electric vehicles. The main reason behind this is to operate motor in two quadrants as motoring and regenerative for making efficient operation. Bidirectional DC-DC converter consists of buck and boost converter. During motoring mode energy is supplied through a battery and in regenerative mode battery is charged through a DC link created. This paper primarily gives attention on control strategy used for operation. In this gate complimentary control used to trigger initially turned off switch and divert current through anti parallel connected diode of initially active switch so that main switch can be triggered under zero voltage switching.
Energies
This article reviews the design and evaluation of different DC-DC converter topologies for Battery Electric Vehicles (BEVs) and Plug-in Hybrid Electric Vehicles (PHEVs). The design and evaluation of these converter topologies are presented, analyzed and compared in terms of output power, component count, switching frequency, electromagnetic interference (EMI), losses, effectiveness, reliability and cost. This paper also evaluates the architecture, merits and demerits of converter topologies (AC-DC and DC-DC) for Fast Charging Stations (FCHARs). On the basis of this analysis, it has found that the Multidevice Interleaved DC-DC Bidirectional Converter (MDIBC) is the most suitable topology for high-power BEVs and PHEVs (> 10kW), thanks to its low input current ripples, low output voltage ripples, low electromagnetic interference, bidirectionality, high efficiency and high reliability. In contrast, for low-power electric vehicles (<10 kW), it is tough to recommend a single candida...
2020 IEEE Energy Conversion Congress and Exposition (ECCE), 2020
High power EV chargers connected to an AC power distribution bus are employing a three-phase AC/DC Power Factor Correction (PFC) front-end and a series-connected isolated DC/DC converter to efficiently regulate the traction battery voltage and supply the required charging current. In this paper, the component stresses and the design optimization of a novel two-stage three-phase bidirectional buck-boost current DC-link PFC rectifier system, realized solely with SiC power MOSFETs and conveniently requiring only a single magnetic component, are introduced. This topology offers a high efficiency in a wide operating range thanks to the synergetic operation of its two stages, the three-phase buck-type current source rectifier stage and the subsequent three-level boost-type DC/DC-stage, which makes it suitable for on-board as well as off-board charger applications. The calculated voltage and current component stresses of the proposed converter system, considering an output voltage range of 200 to 1000 V and up to 10 kW of output power, help to identify its operating boundaries, maximizing the utilization of the power semiconductors and of the DC-link inductor. The optimum values of the circuit parameters are selected after evaluating the converter average efficiencyη and volumetric power density ρ in the Pareto performance space and analyzing its design space diversity, focusing on the semiconductor losses and on the characteristics of the inductor. Considering typical EV battery charging profiles, i.e. taking both full-load and part-load operation into account, a power converter realization featuringη = 98.5 % and ρ = 13.9 kW/dm 3 is achieved.
World Electric Vehicle Journal
Recently, Plug-in Hybrid Electric Vehicles (PHEVs) have gathered a lot of attention by integrating an electric motor with an Internal Combustion Engine (ICE) to minimize fuel consumption and greenhouse gas emissions. The On-Board Chargers (OBCs) are selected in this research because they are limited by dimensions and mass, and also consume low amounts of power. The Equivalent Series Resistance (ESR) of a filter capacitor is minor, so the zero produced by the ESR is positioned at a high frequency. In this state, the system magnitude gradually drops, causing a ripple in the circuit that generates a harmful impact on the battery’s stability. To improve the stability of the system, a Neural Network with an Improved Particle Swarm Optimization (NN–IPSO) control algorithm was developed. This study establishes an isolated converter topology for PHEVs to preserve battery-charging functions through a lesser number of power electronic devices over the existing topology. This isolated converte...
Sustainability
Electric vehicles (EVs) are set to become one of the domestic transportation systems that are highly preferred over conventional vehicles. Due to the huge demand for and cost of fuel, many people are switching over to EVs. Companies such as Tesla, BMW, Audi, and Mercedes have started marketing EVs. These EVs need charging stations to charge the batteries. The challenges for EV batteries require the implementation of features such as fast charging, long-run utilization, reduced heat emission, a light weight, and a small size. However, fast charging using conventional converters generates an imbalance in current injection due to the passive component selection. In this study, a converter is proposed that uses an interleaved network that provides a balanced current injection; i.e., an improved interleaved phase-shifted semi-bridgeless boost converter (IIPSSBBC) is designed for EV battery charging applications. The suggested approach is mathematically designed using MATLAB/Simulink (202...