A Magnetless Axial-Flux Machine for Range-Extended Electric Vehicles

Lee, Christopher; Liu, Chunhua; Chau, K. T.

doi:10.3390/en7031483

Cited by 32 publications

(34 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The development trend of ISG machines focuses on further improving the operating performances such as the starting torque, constant-voltage generation, motoring and generation efficiencies, robustness and cost effectiveness. Some state-of-theart ISG machines are the PM hybrid brushless machine which can allow flexible control of air-gap flux density to improve the starting torque and constant-voltage generation [15], the AF-DSDC magnetless machine which does not require any expensive PM material while offering comparable torque density to improve the robustness and cost effectiveness [16], and the compressed winding PM brushless machine which can increase the conductor fill factor to improve the efficiency and thermal conductivity [17].…”

Section: Electric Machine Systems For Hybrid Propulsionmentioning

confidence: 99%

State-of-the-Art Electromagnetics Research in Electric and Hybrid Vehicles (Invited Paper)

Chau¹,

Jiang²,

Han³

et al. 2017

PIER

View full text Add to dashboard Cite

Abstract-There is no doubt that electrified vehicles are superseding internal combustion engine vehicles for road transportation. Among them, electric vehicles (EVs) have been identified as the greenest road transportation while hybrid EVs have been tagged as the super ultra-low emission vehicles. In this paper, the definition, classification, merits and demerits of electric and hybrid vehicles are first introduced. Then, after revealing their multidisciplinary technologies and development trends, the state-of-the-art electromagnetics research in electric and hybrid vehicles are discussed, with emphasis on electric motors for electric propulsion, electric machine systems for hybrid propulsion, wireless power transfer technologies for park-and-charge a well as move-and-charge, electromagnetic interference and compatibility issues in EVs, electromechanical flywheels for energy storage and magnetic sensors for EV operation. Meanwhile, the development trend of these research areas is revealed.

show abstract

Section: Electric Machine Systems For Hybrid Propulsionmentioning

confidence: 99%

State-of-the-Art Electromagnetics Research in Electric and Hybrid Vehicles (Invited Paper)

Chau¹,

Jiang²,

Han³

et al. 2017

PIER

View full text Add to dashboard Cite

show abstract

“…The EM obtaining the energy from the battery propels the BEV through the transmission. However, there still exist the following shortcomings in the traditional BEVs: (1) Since the BEV is driven by the EM alone and it is also required to work in a wide range of velocities [6], it is bound to increase the maximum power and speed of the EM when we design or choose the EM, which will create difficulties in the design of the BEV; (2) it is rather obvious that there is only one power flow path. As far as regenerative braking is concerned, the instantaneous power from braking may cause potential damage to the batteries and reduce the battery life.…”

Section: Introductionmentioning

confidence: 99%

A Novel Electric Vehicle Powertrain System Supporting Multi-Path Power Flows: Its Architecture, Parameter Determination and System Simulation

et al. 2017

View full text Add to dashboard Cite

Abstract:In this paper, a novel electric vehicle powertrain system is proposed. In the system, a coaxial magnetic gear (CMG), an electromagnetic clutch, a lock, and two electric machines (EMs) are adopted to achieve the power-split by controlling the states of the clutch and the lock, which enables electric vehicles (EVs) to work in four operation modes. The configuration, power flow paths and operation modes are depicted in detail. A dynamic model is established to help determine the parameters and build simulation models. The simple control strategy is adopted to achieve flexible power-splits. How to determine the relevant parameters to meet the drive requirements in the powertrain system is also elaborated. A dynamic simulation using MATLAB/Simulink is performed to take into account the control strategy and New European Drive Cycle. Finally, the simulation results demonstrate, in theory, the rationality of the determined parameters and the feasibility of the operation modes as well as the control strategy.

show abstract

“…To get round these structural problems, the doubly salient dc-field (DSDC) machine was suggested [24]. By replacing the PM materials with the independent dc-field winding, the DSDC machine can enjoy the benefits of higher cost-effectiveness and better flux controllability [25]. Yet, the development of the FRDC machine is still absent.…”

Section: Introductionmentioning

confidence: 99%

Design and Analysis of a Cost-Effective Magnetless Multiphase Flux-Reversal DC-Field Machine for Wind Power Generation

Lee

Chau

Liu

2015

IEEE Trans. Energy Convers.

Self Cite

View full text Add to dashboard Cite

This paper proposes a new four-phase flux-reversal dc-field (FRDC) machine for the wind power generation applications. The key distinction of the proposed generator is to artfully design its stator pole and winding arrangement in a way imitating the permanent-magnet (PM) configurations, which the profound FRPM machine has. Hence, the proposed FRDC generator can provide the bipolar flux-linkage patterns and achieve performances similar to that of the high-quality FRPM generators. The proposed generator can regulate its controllable dc-field winding to vary its flux density effectively. Thus, it can achieve the constant-output-voltage characteristics at different situations in order to extend the battery life and to protect the power grid system. Without installation of any high-cost PM materials, the proposed magnetless FRDC generator can achieve better cost-effectiveness than its PM counterparts. The key performances of the proposed wind power generator are thoughtfully analyzed by the finiteelement method, while the experimental prototype is also setup for verifications.

show abstract

A Magnetless Axial-Flux Machine for Range-Extended Electric Vehicles

Cited by 32 publications

References 31 publications

State-of-the-Art Electromagnetics Research in Electric and Hybrid Vehicles (Invited Paper)

State-of-the-Art Electromagnetics Research in Electric and Hybrid Vehicles (Invited Paper)

A Novel Electric Vehicle Powertrain System Supporting Multi-Path Power Flows: Its Architecture, Parameter Determination and System Simulation

Design and Analysis of a Cost-Effective Magnetless Multiphase Flux-Reversal DC-Field Machine for Wind Power Generation

Contact Info

Product

Resources

About