Influence of Winding Distribution on Fault Tolerant Performance in a Fault-Tolerant Permanent Magnet Rim Driven Motor

Abstract

The Fault-Tolerant Permanent Magnet Rim Driven Motor (FTPM-RDM) is a high performance, high reliability marine driven motor. The short-circuit current and the mutual inductance voltage generated by the short-circuit current are important parameters to indicate the fault-tolerant performance of a motor. Increasing self-inductance and decreasing mutual inductance is an important method to improve fault tolerance of a FTPM-RDM. In this paper, the influence of positive wounded winding structure and positive and negative wounded winding structure of a 24-slot motor on the self-inductance and mutual inductance is analyzed by the winding function method. The conclusion that the positive and negative wounded winding structure has high self-inductance and low mutual inductance is revealed. This conclusion is generalized to the winding design in a general structure motor, and a generalized method of winding reconstruction is proposed. The simulation results show that the proposed winding reconstruction method can effectively increase self-inductance and significantly reduce mutual inductance to improve the fault tolerance of a FTPM-RDM. A motor prototype is produced and the experimental results have verified the correctness and feasibility of the proposed method.INDEX TERMS Fault-tolerant permanent magnet rim driven motor, short-circuit current, self-inductance and mutual inductance, winding function method, winding distribution.

Research on Short-Circuit of Fault-Tolerant Permanent Magnet Rim Driven Motor Based on SPSRF-MPCC Algorithm

“…However, the rim driven motor is prone to electrical failure cause it usually work under the water, and the PMSM mainly adopts the Y-type connection mode which has limited fault-tolerant capability [9]. The fault-tolerant permanent magnet rim driven motor (FTPM-RDM) has more than just the advantages of PMSM: It is of good fault-tolerant ability as well as stability with high efficiency due to the special structure design [10], [11].…”

Study on Sensorless Control of Six Phase Fault-tolerant Permanent Magnet Rim Driven Motor with Improved Second-order SOGI HF Voltage Injection

“…FTPM-RDM is a new type of dual three-phase (DTP) PMSM which is symmetrically displaced by 60 degrees electrically. It is settled upon isolated phase winding design, and each phase is driven by an independent H-bridge inverter circuit, which is still able to work in the event of one or more phases open circuit [7][8][9]. Therefore, RDT can improve the reliability and safety by adopting FTPM-RDM in RDT system.…”