On Field Weakening Performance of a Brushless Direct Current Motor with Higher Winding Inductance: Why Does Design Matter?

Energies

Seray Senol¹  Bekir Fincan²  Ozgur Ustun²  OmerCihan Kivanc³ 

[1] ABB UK Engineering Centre, Leicestershire LE67 4JP, UK;Electrical Engineering Department, Istanbul Technical University, Istanbul 34467, Turkey;Electrical and Electronics Engineering Department, Istanbul Okan University, Istanbul 34959, Turkey;

关键词: brushless dc motor;    phase-advanced method;    winding inductance;    sub-fractional slot-concentrated winding;    field weakening;    periodic timer interrupt;   

DOI  :  10.3390/en11113119

来源: DOAJ

【 摘 要 】

This paper comprises the design, analysis, experimental verification and field weakening performance study of a brushless direct current (BLDC) motor for a light electric vehicle. The main objective is to design a BLDC motor having a higher value d-axis inductance, which implies an improved performance of field weakening and a higher constant power speed ratio (CPSR) operation. Field weakening operation of surface-mounted permanent magnet (SMPM) BLDC motors requires a large d-axis inductance, which is characteristically low for those motors due to large air gap and PM features. The design phases of the sub-fractional slot-concentrated winding structure with unequal tooth widths include the motivation and the computer aided study which is based on Finite Element Analysis using ANSYS Maxwell. A 24/20 slot⁻pole SMPM BLDC motor is chosen for prototyping. The designed motor is manufactured and performed at different phase-advanced currents in the field weakening region controlled by a TMS320F28335 digital signal processor. As a result of the experimental work, the feasibility and effectiveness of field weakening for BLDC motors are discussed thoroughly and the contribution of higher winding inductance is verified.

【 授权许可】

Unknown