Synchronous reluctance submersible motor
A technology of submersible motor and synchronous reluctance, which is applied in the direction of synchronous machine, synchronous motor for single-phase current, magnetic circuit, etc., can solve the problem of high cost of rare earth permanent magnet synchronous submersible motor and large current of copper guide bar , high temperature demagnetization and other problems, to achieve the effect of simple structure, good speed regulation performance, and realization of speed
Inactive Publication Date: 2019-04-23
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology
[0004] The purpose of the present invention is to provide a synchronous reluctance submersible motor, which is used to solve the problem that the copper guide bar in the rotor of the traditional asynchronous submersible motor has a relatively large current, which will cause relatively serious heating. At the same time, it can also solve the problem of rare earth The high cost of permanent magnet synchronous submersible motors and the risk of high temperature demagnetization
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[0031] The invention provides a synchronous reluctance submersible motor, comprising a stator assembly and a rotor assembly, the stator assembly includes at least two concentrically arranged stator segments, the rotor assembly includes at least two coaxially arranged rotor segments, the stator segment The number of rotor segments is the same as that of the rotor segments, and there is a one-to-one correspondence in position. The area where the direct-axis magnetic circuit passes through the rotor core of each rotor segment has a through-hole structure for increasing the reluctance. When the direct-axis magnetic circuit passes through the rotor, it must Through the air layer, the reluctance of the motor in the direction of the direct axis is greater than that in the direction of the quadrature axis.
[0032] Based on the above basic technical solution, the technical solution will be further described in detail below in conjunction with the accompanying drawings.
[0033] like ...
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The invention relates to a synchronous reluctance submersible motor. The synchronous reluctance submersible motor comprises a stator assembly and a rotor assembly. the stator assembly comprises at least two concentrically arranged stator segments, the rotor assembly comprises at least two coaxially disposed rotor segments, the stator segments are the same as the rotor segments in quantity, the stator segments and the rotor segments are in one-to-one correspondence in position, a first magnetic circuit and a second magnetic circuit are one of a straight-axis magnetic circuit and a cross-axis magnetic circuit, and an area where the first magnetic circuit passes through, on the rotor core of each rotor segment is provided with a through hole structure to allow the magnetic resistance of the motor in the direction where the first magnetic circuit is located to be larger than the magnetic resistance of the motor in the direction where the other magnetic circuit is located. The huge magneticresistance difference between the straight-axis magnetic circuit and the cross-axis magnetic circuit on the rotor segments can generate drive torque with the magnetic resistance performance to make the rotor rotate, the synchronous reluctance submersible motor does not have structures such as a copper bar, the rotor has no a current without large loss and with a heating phenomenon due to the current so as to improve the service life of the motor in the high temperature environment.
Description
technical field [0001] The invention relates to a synchronous reluctance submersible motor, which belongs to the technical field of submersible electric pumps for oil exploitation equipment. Background technique [0002] The rodless pump oil production system represented by the electric submersible pump transmits the electric energy of the ground power supply to the downhole submersible motor through the cable, so that the submersible motor runs, thereby driving the downhole centrifugal pump to rotate, and lifting the crude oil in the oil well to the surface , It completely solves the problems of eccentric wear, tripping, and broken rods caused by the long-distance motion transmission of the sucker rod, and is widely used in the production of deviated wells and horizontal wells. As the core power component, the submersible motor plays a decisive role in the performance and reliability of the submersible electric pump. In order to meet the small-diameter space requirements a...
Claims
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IPC IPC(8): H02K19/10H02K1/16H02K3/12H02K3/28H02K3/02H02K1/22
CPCH02K1/165H02K1/22H02K3/02H02K3/12H02K3/28H02K19/103H02K2213/03
Inventor 田芳勇王晋陈传东朱德智宋衍马广杰方涛常丽芳
Owner CHINA PETROLEUM & CHEM CORP