An Improved Torque Density Pseudo Six-Phase Induction Machine Using a Quadruple Three-Phase Stator Winding

被引:15
|
作者
Abdel-Khalik, Ayman S. [1 ]
Massoud, Ahmed M. [2 ]
Ahmed, Shehab [3 ]
机构
[1] Alexandria Univ, Elect Engn Dept, Fac Engn, Alexandria 21544, Egypt
[2] Qatar Univ, Dept Elect Engn, Doha 2713, Qatar
[3] King Abdullah Univ Sci & Technol, CEMSE Div, Thuwal 23955, Saudi Arabia
关键词
Windings; Stator windings; Layout; Harmonic analysis; Fault tolerance; Fault tolerant systems; Fault-tolerant operation; high-power machines; nine-phase six-terminal winding; optimal current control; quadruple three-phase winding; six-phase machines; vector space decomposition; IMPROVED FAULT-TOLERANT; HARMONIC CURRENTS; PWM;
D O I
10.1109/TIE.2019.2901574
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
The nine-phase six-terminal induction machine has recently been proposed as a promising contender to the conventional six-phase asymmetrical winding machine in terms of torque density, phase current quality, stator winding simplicity, and fault-tolerant capability. However, the relatively lower dc-link voltage utilization of a single neutral arrangement in multiphase machines with multiple three-phase windings represents, in general, a technical challenge when compared to windings with isolated star points. Therefore, this paper proposes a new pseudo six-phase winding layout suitable for medium-voltage high-power induction machines, which employs quadruple three-phase stator winding sets, while providing the same terminal behavior of a nine-phase six-terminal winding. Additionally, like the traditional six-phase winding, two possible neutral arrangements can be configured. The proposed winding configuration provides the same dc-link voltage utilization as in conventional dual three-phase winding machines with isolated neutrals. The effect of the circulating zero-sequence current component experienced with a single neutral arrangement can also be avoided. A 1.5Hp prototype induction machine is used to experimentally validate the proposed six-phase winding layout under both healthy and fault conditions.
引用
收藏
页码:1855 / 1866
页数:12
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