Optimization of the Winding Arrangement to Increase the Zero-Sequence Inductance of a Synchronous Machine With Multifunctional Converter Drive

Variation Regularity and Measurement of Zero-Sequence Inductance of Fractional Slot Concentrated Winding PMSMs

“…9, where coils are wound on the stator teeth. According to [15], [17], the position of coil sides in a slot strongly influences L σ and L s0 . To improve accuracy, the two coil sides in the FEM model are located adjacent to the tooth, which resembles that in the prototype.…”

“…Whereas, in the cases of the faulty condition [12], open-winding machine [13] or star-connected winding scheme with grounded neutral point [14], as shown in Fig. 1, the zero-sequence current exists and related issues arise, such as additional electromagnetic loss, torque ripples [14], and low control accuracy [15].…”

“…A large zero-sequence (ZS) inductance L 0 helps to reduce zero-sequence current [15] or improves the performance of the fault-tolerant operation. On the other hand, accurate calculation of L 0 is essential for the steady/dynamic simulation, controller design, and fault-handling control strategy, e.g., common-mode voltage rejection.…”

Modeling, Control, and Experimental Evaluation of Multifunctional Converter System

“…Although the motor losses of the MFCS increase, they can be mitigated by proper design of motor winding layout with larger L 0 . For example, [22] and [23] presented that a motor with a two-layer fractional slot winding has bigger leakage inductance than the motor with side-byside placed winding. Thirdly, the 20 kHz harmonic voltage (20kHV) amplitude of u CN in the MFCS is larger than that in the standard topology (9.48 V to 0.37 V).…”