An Improved Current-Fed Bidirectional DC–DC Converter for Reconfigurable Split Battery in EVs

Tomar, Pavan Singh; Srivastava, Manaswi; Verma, Arun Kumar

doi:10.1109/tia.2020.3024165

Cited by 19 publications

(21 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…6 in the gray color. The moving average complex states, including the DC component of the currents and the voltage, are referred to (6) and (8). The results show that there is no significant difference between the state-space average models and the fully switched detailed model.…”

Section: Buck Converter Behaviormentioning

confidence: 99%

See 1 more Smart Citation

A Generalized State Space Average Model for Parallel DC-to-DC Converters

Alsiraji¹

2022

Computer Systems Science and Engineering

View full text Add to dashboard Cite

The high potentiality of integrating renewable energies, such as photovoltaic, into a modern electrical microgrid system, using DC-to-DC converters, raises some issues associated with controller loop design and system stability. The generalized state space average model (GSSAM) concept was consequently introduced to design a DC-to-DC converter controller in order to evaluate DC-to-DC converter performance and to conduct stability studies. This paper presents a GSSAM for parallel DC-to-DC converters, namely: buck, boost, and buck-boost converters. The rationale of this study is that modern electrical systems, such as DC networks, hybrid microgrids, and electric ships, are formed by parallel DC-to-DC converters with separate DC input sources. Therefore, this paper proposes a GSSAM for any number of parallel DC-to-DC converters. The proposed GSSAM is validated and investigated in a time-domain simulation environment, namely a MATLAB/SIMULINK. The study compares the steady-state, transient, and oscillatory performance of the state-space average model with a fully detailed switching model.

show abstract

Section: Buck Converter Behaviormentioning

confidence: 99%

“…Due to the revolutionary development of modern electrical systems such as electric vehicles, ships, and microgrids, DC-to-DC converters are widely used in industry [1][2][3][4][5][6]. Moreover, DC-to-DC converters have become the cornerstone for active power systems, especially in DC and hybrid microgrids [7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

A Generalized State Space Average Model for Parallel DC-to-DC Converters

Alsiraji¹

2022

Computer Systems Science and Engineering

View full text Add to dashboard Cite

show abstract

“…Due to its high efficiency and controllability, the PMBLDC motor is the most popular option in the drive train of low-to-medium power EVs. In the past decade, to improve the drivetrain's efficiency, research on bidirectional DC-to-DC converters (BDCs) for EV applications has been extensively done [1][2][3][4][5]. e problem with these BDCs is that they have a large number of component requirements and high voltage stress on the switches.…”

Section: Introductionmentioning

confidence: 99%

Bidirectional Quadratic Converter-Based PMBLDC Motor Drive for LEV Application

Kumar

Chaudhary

Saket

et al. 2022

Journal of Electrical and Computer Engineering

View full text Add to dashboard Cite

In this study, a bidirectional DC-to-DC quadratic converter (BDQC) is designed and developed for the motoring and regenerative braking (RB) of a permanent magnet brushless DC (PMBLDC) motor for a light electric vehicle (LEV) application. A PMBLDC motor is deemed more suitable for an electric vehicle (EV) due to its high efficiency and torque density. In the present work, a BDQC of 1 kW is designed to drive a 1.1 HP PMBLDC motor through a conventional voltage source inverter (VSI). An EV’s load cycle is emulated using a highly inertial load driven by a PMBLDC motor during the converter’s boost mode operation. RB is a crucial factor in extending the driving range of EVs by efficiently utilizing battery power. The converter operates in buck mode during RB, and simultaneously, the back electromotive force (EMF) of the PMBLDC machine is boosted by the self-inductance of the PMBLDC motor and the VSI. The braking technique used in this work eliminates the traditional drawback of RB in buck mode, as the power is extracted even when the motor’s back EMF is lower than the battery’s voltage. The control strategy has been implemented using the TMS320F28335 DSP controller for a developed converter prototype of the converter and driving the PMBLDC motor. The experimental results are compared to the simulation results, and a good alignment has been found.

show abstract

“…Such converters contain many components, and their complicated control leads to increased converter costs. An improved current-fed bidirectional DC/DC converter for EVs was developed [20] to achieve ZVS turn-on and ZCS (zero-current switching) turn-off for all power switches, but it only provides 250 W of output power for step-up and step-down modes. This output power is insufficient for EV batteries.…”

Section: Introductionmentioning

confidence: 99%

Novel Bidirectional Isolated DC/DC Converter with High Gain Ratio and Wide Input Voltage for Electric Vehicle Storage Systems

Tai

2022

Batteries

View full text Add to dashboard Cite

This study proposes a novel bidirectional isolated DC/DC converter with a high gain ratio and wide input voltage for electric vehicle (EV) storage systems. The DC bus of an EV can be used to charge its battery, and the battery pack can discharge energy to the DC bus through the bidirectional converter when the DC bus lacks power. The input voltage range of the proposed converter is 24 to 58 V on the low-voltage side, which meets the voltage specifications of most servers and batteries on the market. The proposed topology is verified through design, simulation, and implementation, and voltage gain, voltage stress, and current stress are investigated. The control bidirectional converter is simple. Only one set of complementary signals is required for step-up and step-down modes, which greatly reduces costs. The converter also features a continuous current at the low-voltage side, a leakage inductance function for energy recovery, and zero-voltage switching (ZVS) on certain switches, which can prevent voltage spikes on the switches and increase the efficiency of the proposed converter. A bidirectional converter with a total power of 1 kW is used to verify the topology’s feasibility and practicability. The power at the low-voltage side was 24–58 V, and the maximum efficiency in step-up mode was 94.5%, 96.5%, and 94.8%, respectively; the maximum efficiency in step-down mode was 94.4%, 95.4%, and 93.7%, respectively.

show abstract

An Improved Current-Fed Bidirectional DC–DC Converter for Reconfigurable Split Battery in EVs

Cited by 19 publications

References 28 publications

A Generalized State Space Average Model for Parallel DC-to-DC Converters

A Generalized State Space Average Model for Parallel DC-to-DC Converters

Bidirectional Quadratic Converter-Based PMBLDC Motor Drive for LEV Application

Novel Bidirectional Isolated DC/DC Converter with High Gain Ratio and Wide Input Voltage for Electric Vehicle Storage Systems

Contact Info

Product

Resources

About