Design of a switched reluctance sector motor for an integrated motor/propeller unit

Richardson, Kenneth; Pollock, C.; Flower, John

doi:10.1049/cp:19950877

Cited by 15 publications

(8 citation statements)

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“…1995 [19] The motor used a 3-phase 6-pole electromagnetic scheme to complete a 5 kW prototype design. There was anticorrosive paint on the surface, the stator winding was made of insulated cables, and the air gap was 0.6 mm.…”

Section: Switched Reluctance Motor (Srm)mentioning

confidence: 99%

A Review of Progress and Hydrodynamic Design of Integrated Motor Pump-Jet Propulsion

Abdullah

Rasani

2022

Applied Sciences

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The integrated motor pump-jet (IMP) propulsion system is a form of modern underwater vehicle propulsion that uses a modular design paradigm. The integrated motor propulsor is a compact construction consisting of a permanent magnet (PM) and a pump-jet propulsor, as well as the propulsion and electrical systems. Compactness, great reliability, and low noise are the most significant features of this technology. The primary technology research status and main application configurations of propulsion devices with an integrated motor were examined based on the working principles and attributes of the devices. The theoretical and experimental research on the design, performance analysis, and control of IMPs is discussed, covering electric motors; bearing structures; hydrodynamic design; and hydrodynamic, electromagnetic, and bearing coupling design technology. This research investigates the most recent research goals, progress, and applications of IMPs, which includes their hydrodynamic performance, cavitation, and gap flow. Finally, the future essential technologies of high power, low vibration, water-lubricated bearings, electromagnetic and bearing coupling design, and IMP antipollution and antidamage capacity are summarized.

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Section: Switched Reluctance Motor (Srm)mentioning

confidence: 99%

A Review of Progress and Hydrodynamic Design of Integrated Motor Pump-Jet Propulsion

Abdullah

Rasani

2022

Applied Sciences

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“…As the integrated motor is operated in BLDC model and full-pitch concentrated windings are placed and wye-connected, two phases are connected at any time, and the other phase is disconnected. For the purpose of maximal electromagnetic torque, when the qth phase are connected within 120° electrical degree, the change of flux linked to one coil in the qth phase should be maximised, and it can be expressed as (19)…”

Section: Optimisation Of the Halbach Arraymentioning

confidence: 99%

“…In addition, PM synchronous motors [11,12] and PM brushless motors [13,14] have been designed and analysed for IMPs. Other options such as superconducting motor [15,16], induction motor [17,18], and switched reluctance motor [19] were also tried as the integrated motors.…”

Section: Introductionmentioning

confidence: 99%

Analytical design of the integrated motor used in a hubless rim‐driven propulsor

Cheng

Pan

Cao

2019

IET Electric Power Applications

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The rim-driven integrated motor propulsor (IMP) has received much attention in recent years, owing to its superiority in flexibility, reliability, and space occupation. For this propulsion system, radially thin motors with high torque and large air gaps are essential. Two-segment Halbach array permanent magnets with unequal segment-arc are adopted to enable a thin rotor and a large air gap. The general analytical solution of the magnetic field is presented. Based on the analytical calculation of the Halbach motor performance, the necessity of the rotor core was discussed, and the Halbach array was optimised with an analytical method to maximise the electromagnetic torque. This study also tried and compared three designs of the integrated motor stator to further reduce the radial thickness, and the slotted stator proved more reasonable. The fabrication of an IMP prototype was completed, and the experimental data of the integrated motor are presented and compared with the calculated results. This study also conducted the water tunnel experiment of the IMP prototype to test the integrated motor performance in the overall IMP system. The measured rotational speed and output thrust are less than expected, so the friction loss in the IMP gap flow field is calculated and analysed.

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“…The Rim-Driven Thruster (RDT) is a new type of Marine electric propulsion device which integrates propeller and motor [1], [2]. With the development of Marine all-electric propulsion system, the RDT has gradually attracted attention from various countries due to its small size, high propulsion efficiency and easy disassembly [3], [4]. At present, the basic idea of using brushless DC motor and permanent magnet synchronous motor as the inner motor of RDT has been formed [5]- [7].…”

Section: Introductionmentioning

confidence: 99%

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

Zhu

Lin

et al. 2019

IEEE Access

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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.

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Design of a switched reluctance sector motor for an integrated motor/propeller unit

Cited by 15 publications

References 0 publications

A Review of Progress and Hydrodynamic Design of Integrated Motor Pump-Jet Propulsion

A Review of Progress and Hydrodynamic Design of Integrated Motor Pump-Jet Propulsion

Analytical design of the integrated motor used in a hubless rim‐driven propulsor

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

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