Parametric Optimization and Performance Analysis of Outer Rotor Permanent Magnet Flux Switching Machine for Downhole Application

Abstract

To empower safe, economical and eco-friendly sustainable solution for enhancing oil and gas productivity from deep water reservoirs, new downhole technologies are recommended. Since electric machine plays leading role in the downhole application, it is a squeezing requirement for researchers to design and develop advanced electric machine. The Recent improvement in technology and uses of high-temperature magnets, permanent magnet flux switching machine (PMFSM) has become one of the appropriate contenders for offshore drilling but fewer designed for downhole due to ambient temperature. Therefore this comprehensive study deals with the design optimization and performance analysis of outer rotor PMFSM for the downhole application. Preliminary, the basic design parameters needed for machine design are calculated mathematically. Then the design refinement technique is implemented through deterministic method. Finally, initial and optimized performance of the machine is compared and as a result the output torque is increase from 16.39 Nm to 33.57 Nm while diminishing the cogging torque and PM weight up to 1.77 Nm and 0.79 kg, respectively. Therefore, it is concluded that purposed optimized design is suitable for the downhole application.

Development of software and hardware models of monitoring, control, and data transfer to improve safety of downhole motor during drilling

“…Measuring information, including monitoring and control on the part of downhole instruments, is also proposed to be transmitted over a wireline cable. The logging cable is a cable with a sufficiently large (up to several tons) breaking force, which carries wells in chemically and mechanically aggressive well environment [8,9].…”

Deterministic Optimization Method (DOM) of Permanent Magnet Flux Switching Machine (PMFSM) for Application of Electric Bikes

“…Since the magnitude of magnetic flux is increased so back-EMF is also enlarged. Moreover, higher back-EMF of optimized design can be employed for a regenerative braking system to charge the source [13].…”

Design and performance analysis of various high torque segmented rotor HE‐FSM topologies for aircraft applications

“…These machines are found mechanically weak in structure due to positioning PMs on the rotor side. The drawback of poor thermal dissipation also limits the applications of these machines, while suitable outline arrangements can promise consistent fault tolerance abilities [17–19]. Simultaneously, flux switching machines (FSMs) in which magnetic flux can be generated by PMs have seemed to gain the ability to achieve higher amounts of torque density with great ability to work under fault conditions [20–22].…”