An Integrated 20-kW Motor Drive and Isolated Battery Charger for Plug-In Vehicles

Haghbin, Saeid; Khan, Kamin; Zhao, Shuang; Alaküla, Mats; Lundmark, Sonja; Carlson, Ola

doi:10.1109/tpel.2012.2230274

Cited by 107 publications

(55 citation statements)

References 35 publications

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“…In order to realize grid charging without the need for charging stations, a split-phase structure is developed for permanent magnet motors [23], [27]; but they are suited only for AC charging and need special design of the winding structure. In this paper, a four-phase 8-slot/6-pole (8/6) SRM is chosen.…”

Section: Srm Topology With Central Tapped Windingsmentioning

confidence: 99%

“…In this case, the charging system can control energy flow between the high voltage bus and the battery pack but its circuitry is complicated and the available power flow modes are limited. The third route is described in [23]- [27] which integrate the on-board charger with the drive motor, so as to utilize the machine windings for charging purposes. A 20 kW PM split-phase motor drive is specially designed and its traction/charging modes are controlled by a switch based relay [23], [26], but the motor suffers from low charging power (<3kW) and high harmonic contents in the back electromotive force (EMF).…”

Section: Introductionmentioning

confidence: 99%

“…The third route is described in [23]- [27] which integrate the on-board charger with the drive motor, so as to utilize the machine windings for charging purposes. A 20 kW PM split-phase motor drive is specially designed and its traction/charging modes are controlled by a switch based relay [23], [26], but the motor suffers from low charging power (<3kW) and high harmonic contents in the back electromotive force (EMF). The same method for a split-phase induction machine was developed in [27] to provide three grid-connected nodes, which can combine motoring and grid-charging functions.…”

Section: Introductionmentioning

confidence: 99%

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Split Converter-Fed SRM Drive for Flexible Charging in EV/HEV Applications

Gan

Cao

et al. 2015

IEEE Trans. Ind. Electron.

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 Abstract-Electric vehicles (EVs) and hybrid electric vehicles (HEVs) are the way forward for green transportation and for establishing a low-carbon economy. This paper presents a split converter-fed four-phase switched reluctance motor (SRM) drive to realize flexible integrated charging functions (DC and AC sources). The machine is featured with a central tapped winding node, eight stator slots and six rotor poles (8/6). In the driving mode, the developed topology has the same characteristics as the traditional asymmetric bridge topology but better fault tolerance. The proposed system supports battery energy balance and on-board DC and AC charging. When connecting with an AC power grid, the proposed topology has a merit of the multi-level converter; the charging current control can be achieved by the improved hysteresis control. The energy flow between the two batteries is balanced by the hysteresis control based on their state-of-charge (SoC) conditions. Simulation results in Matlab/Simulink and experiments on a 150 W prototype SRM validate the effectiveness of the proposed technologies, which may provide a solution to EV charging issues associated with significant infrastructure requirements.

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Section: Srm Topology With Central Tapped Windingsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Split Converter-Fed SRM Drive for Flexible Charging in EV/HEV Applications

Gan

Cao

et al. 2015

IEEE Trans. Ind. Electron.

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“…Converter topologies, converter packaging and existing passive technologies for IMDs are also presented 2 Principal types of IMD Despite significant awareness of IMDs in industry, extensive research and literature on the topic, very little work exists on complete PE and machine integration. The majority of literature and research exists as reviews of present IMD technologies and market perspective [12][13][14][15][16], finite element analysis (computer simulations) [17,18] and functional integration [19].…”

Section: Introductionmentioning

confidence: 99%

Integrated motor drives: state of the art and future trends

2017

IET Electric Power Applications

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With increased need for high power density, high efficiency and high temperature capabilities in aerospace and automotive applications, integrated motor drives (IMD) offers a potential solution. However, close physical integration of the converter and the machine may also lead to an increase in components temperature. This requires careful mechanical, structural and thermal analysis; and design of the IMD system. This study reviews existing IMD technologies and their thermal effects on the IMD system. The effects of the power electronics position on the IMD system and its respective thermal management concepts are also investigated. The challenges faced in designing and manufacturing of an IMD along with the mechanical and structural impacts of close physical integration is also discussed and potential solutions are provided. Potential converter topologies for an IMD like the matrix converter, two-level bridge, three-level neutral point clamped and multiphase full bridge converters are also reviewed. Wide band gap devices like silicon carbide and gallium nitride and their packaging in power modules for IMDs are also discussed. Power modules components and packaging technologies are also presented. IntroductionOver the last two decades there has been a shift from traditional physically separated motor and drive systems to more compact, power dense, motor-drive combinations [1]. This new power-dense motor-drive structure combines both the motor and its associated control and drive circuitry within a single enclosure. The earliest records of commercially available motor-drive systems were manufactured by Grundfos in 1991 and Franz Morat KG in 1993 [2].These compact systems have been called a variety of names from 'smart motors' to 'integrated motors', the latter forming the foundation for the new moniker currently identified with these systems [3]. The term 'integrated motor drive (IMD)' is the latest associated with this class of products and is as a result of the success of a TB Woods Inc. manufactured motor-drive registered under the same name [3].IMDs are increasingly being developed and produced by machine manufacturers due to the significant potential benefits they offer. The most significant of these benefits include direct replacement of inefficient direct on line motors, increased power density, lower losses and lower costs compared with separate motor and drive solutions. Technological advancements over the last decade have led to the development of robust electronic components able to withstand the harsh environments required by some forms of integration [4]. By eliminating separate enclosures and long cable runs, the integrated approach promises to lower system costs by 20 to 40% [5].Elimination of transmission cables has economic advantages, including increased reliability due to the removal of the output filter commonly required for long cables. Removal of long cable runs and integration into a single package will also significantly reduce potential electromagnetic interference (EMI). This a...

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“…On-board bidirectional chargers can be further divided into two main types of structures: reused (or integrated) structures and independent structures. In the reused structure, the EV motor's inverter is used as the full-bridge circuit of the grid-tied inverter; the EV motor's windings as the input inductances of the grid-tied inverter; and the EV motor itself as a line-frequency transformer for galvanic isolation [40][41][42][43][44][45][46][47][48]. By using the existing system in the EV, the reused topologies incur lower costs.…”

Section: Introductionmentioning

confidence: 99%

Topology of a Bidirectional Converter for Energy Interaction between Electric Vehicles and the Grid

2014

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Abstract:In vehicle-to-grid (V2G) systems, electric vehicles interact with the grid as distributed energy storage systems that offer many potential benefits. As an energy interface between a vehicle and the grid, the bidirectional converter plays a crucial role in their interaction. Its reliability, safety, cost, efficiency, weight, size, harmonics, and other factors are of essential importance for V2G realization, especially for on-board operations. Beyond the common existing topologies for bidirectional chargers, this paper introduces a novel high-power-factor bidirectional single-stage full-bridge (BSS-FBC) topology, which offers advantages in power density, size, weight, cost, efficiency, power quality, dynamic characteristic, reliability, and complexity. Its operational principles and control strategies are presented. Harmonic analysis on the basis of double-Fourier integral is performed with detailed comparison of line current harmonic characteristics between the BSS-FBC topology and unipolar/bipolar controlled single-phase pulse width modulation (PWM) converters. A dynamic model of the topology is derived, its dynamic behavior analyzed, and its compensator design method developed. Simulation and experimental results are employed to verify the design and analysis. Design considerations for the key parameters are discussed. A 3.3 kW prototype is developed for this topology and validated in its vehicle applications. The results demonstrate clearly the benefits and advantages of the new topology.

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An Integrated 20-kW Motor Drive and Isolated Battery Charger for Plug-In Vehicles

Cited by 107 publications

References 35 publications

Split Converter-Fed SRM Drive for Flexible Charging in EV/HEV Applications

Split Converter-Fed SRM Drive for Flexible Charging in EV/HEV Applications

Integrated motor drives: state of the art and future trends

Topology of a Bidirectional Converter for Energy Interaction between Electric Vehicles and the Grid

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