Design of Electrically Excited Synchronous Machines to Achieve Unity Power Factor in Field Weakening for Long-Haul Electric Trucks
Paper i proceeding, 2020

Electrically excited synchronous machines are a promising candidate for long-haul electric trucks due to excellent capability in field weakening. This study aims at concluding a structural design process of the machine for long-haul electric trucks. A criterion of machine design to achieve unity power factor in field-weakening is derived. With this criterion, a minimum level of field current is decided in the design process. Parametric sweeps are applied to decide the optimum slot geometries for stator and rotor. The optimization of slot geometries is multi-objective. In this study, it is to maximize the peak torque while minimize iron-core losses simultaneously. Pareto frontier is used to identify the optimum solutions. The performance of the finalized design is then evaluated. The high efficiency area is located at high-speed low-torque region which is preferable for long-haul electric trucks. Balance is achieved between copper and iron-core losses during steady-speed intervals of the test cycles which leads to minimum losses in total.

Stator windings

Torque

Optimization

Synchronous machines

Reactive power

Rotors

Windings

Författare

Junfei Tang

Chalmers, Elektroteknik, Elkraftteknik, Elmaskiner och kraftelektronik

Yujing Liu

Chalmers, Elektroteknik, Elkraftteknik, Elmaskiner och kraftelektronik

2020 International Conference on Electrical Machines (ICEM)

2381-4802 (ISSN)

Vol. 23 August 2020 422-428 9270755

2020 International Conference on Electrical Machines (ICEM)
Virtual Gothenburg, Sweden,

Development of efficient and environmental friendly LONG distance powertrain for heavy dUty trucks aNd coaches

Europeiska kommissionen (EU), 2020-01-01 -- 2023-06-30.

HipeDrive - Högpresterande drivlina för fullelektriska tunga lastbilar och premium personbilar

Energimyndigheten, 2020-04-01 -- 2023-09-30.

Styrkeområden

Transport

Ämneskategorier

Farkostteknik

Annan elektroteknik och elektronik

DOI

10.1109/ICEM49940.2020.9270755

ISBN

9781728199450

Mer information

Senast uppdaterat

2021-01-12