Application of Direct-Drive Wheel Motor for Fuel Cell Electric and Hybrid Electric Vehicle Propulsion System

Rahman, K.M.; Patel, N.R.; Ward, Terence; Nagashima, J.M.; Caricchi, F.; Crescimbini, Fabio

doi:10.1109/tia.2006.880886

Cited by 205 publications

(103 citation statements)

References 9 publications

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“…The disc motors have been elected to be used in electric vehicles that use fuel-cell technology [20]. The liquid hydrogen used as fuel cells, could also be used [11] to cool the HTS materials in the rotor disc of the motor installed on the electric vehicle.…”

Section: Electric Disc Motorsmentioning

confidence: 99%

Disc Motor: Conventional and Superconductor Simulated Results Analysis

Inácio¹,

Martins²,

Neves³

et al. 2010

IFIP Advances in Information and Communication Technology

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Abstract. Taking into consideration the development and integration of electrical machines with lower dimensions and higher performance, this paper presents the design and development of a three-phase axial flux disc motor, with 50 Hz frequency supply. It is made with two conventional semi-stators and a rotor, which can be implemented with a conventional aluminum disc or a high temperature-superconducting disc. The analysis of the motor characteristics is done with a 2D commercial finite elements package, being the modeling performed as a linear motor. The obtained results allow concluding that the superconductor motor provides a higher force than the conventional one. The conventional disc motor presents an asynchronous behavior, like a conventional induction motor, while the superconductor motor presents both synchronous and asynchronous behaviors.

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Section: Electric Disc Motorsmentioning

confidence: 99%

Disc Motor: Conventional and Superconductor Simulated Results Analysis

Inácio¹,

Martins²,

Neves³

et al. 2010

IFIP Advances in Information and Communication Technology

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“…Liquid cooling of electric motors is one such technology that is commonly used today in a wide range of electric vehicles. These motors span the range from small in-wheel motors for automobiles [3,7,8], to massive megawatt motors for ocean-going ships [9] and everything in between [10][11][12]. The primary benefit of liquid cooling is that heat generated from Ohmic loss can be quickly removed from the system with convection, thus allowing larger continuous current, torque and power output.…”

Section: Introductionmentioning

confidence: 99%

Design and Comparative Analysis of a Retrofitted Liquid Cooling System for High-Power Actuators

Paine

Sentis

2015

Actuators

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This paper presents an in-depth system-level experimental analysis comparing air-cooled and liquid-cooled commercial off-the-shelf (COTS) electric motors. Typically, liquid-cooled electric motors are reserved for large, expensive, high-end applications where the design of the motor's electromagnetic components are closely coupled to its cooling system. By applying liquid cooling to a pre-existing motor design, this work helps bring the performance advantages of liquid cooling to smaller scale and lower cost applications. Prior work in this area gives little insight to designers of such systems. Conversely, this work aims to improve the understanding of liquid-cooled COTS motors by reporting empirically-observed factors of improvement for motor current, torque, output power and system efficiency. These measurements are obtained using a new liquid-cooled motor housing design that improves the ease of maintenance and component reuse compared to existing work. It is confirmed that datasheet motor thermal properties may serve as a reasonable guide for anticipating continuous torque performance, but may over-specify continuous power output. For the motor used in this test, continuous torque output is increased by a factor of 2.58, matching to within 9% of expected datasheet values. Continuous power output is increased by a factor of two with only 2.2% reduced efficiency compared to air-cooling.

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“…Moreover, more batteries can be installed in the space that would be occupied by the transmission system, which will help to increase the driving range per charge. In contrast, because of the elimination of gears, the system needs to produce the total torque directly into the wheel shaft with higher torque and power density as compared to that in the conventional EV [6,7].…”

Section: Introductionmentioning

confidence: 99%

Analysis of High Torque and Power Densities Outer-Rotor PMFSM with DC Excitation Coil for In-Wheel Direct Drive

Ahmad¹,

Sulaiman²,

Kosaka³

2015

Journal of Magnetics

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In recent years, flux switching machines (FSMs) have been an attractive research topic owing to their tremendous advantages of robust rotor structure, high torque, and high power capability suitable for intensive applications. However, most of the investigations are focusing on the inner-rotor structure, which is incongruous for direct drive applications. In this study, high torque and power densities of a new 12S-14P outer-rotor permanent magnet (PM) FSM with a DC excitation coil was investigated based on two-dimensional finite element analysis for in-wheel direct drive electric vehicle (EV). Based on some design restrictions and specifications, design refinements were conducted on the original design machine by using the deterministic optimization approach. With only 1.0 kg PM, the final design machine achieved the maximum torque and power densities of 12.4 Nm/kg and 5.93 kW/kg, respectively, slightly better than the inner-rotor HEFSM and interior PM synchronous machine design for EV.

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Application of Direct-Drive Wheel Motor for Fuel Cell Electric and Hybrid Electric Vehicle Propulsion System

Cited by 205 publications

References 9 publications

Disc Motor: Conventional and Superconductor Simulated Results Analysis

Disc Motor: Conventional and Superconductor Simulated Results Analysis

Design and Comparative Analysis of a Retrofitted Liquid Cooling System for High-Power Actuators

Analysis of High Torque and Power Densities Outer-Rotor PMFSM with DC Excitation Coil for In-Wheel Direct Drive

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