Method for detecting wiring of three-phase alternating current winding

A three-phase AC and phase winding technology, which is applied in the shape/style/structure of winding conductors, can solve problems such as the inability to detect the correctness of single-phase winding wiring, and achieve the goal of improving production technology, low cost, and improving work efficiency. Effect

Inactive Publication Date: 2014-04-23
XIJING UNIV
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Problems solved by technology

However, this method has limitations and cannot detect the correctness of single-phase winding wiring

Method used

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  • Method for detecting wiring of three-phase alternating current winding
  • Method for detecting wiring of three-phase alternating current winding
  • Method for detecting wiring of three-phase alternating current winding

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Embodiment Construction

[0030] The present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0031] figure 1 , figure 2 , image 3 , Figure 4 with Figure 5 It reflects the operation process when low-voltage direct current (current 1-1.5A) is applied to any phase winding of the three-phase cylindrical linear induction motor used for well logging seismic source.

[0032] The direct current single-phase detection method includes the following steps: place the primary level of the three-phase cylindrical linear induction motor used for the logging source on the table; The reading can reach 1-1.5 amps; after power on for a few seconds, hold the magnetic needle disk and place it horizontally on the leftmost end of the motor. At this time, due to the principle of electromagne...

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Abstract

The invention relates to a method for detecting wiring of a three-phase alternating current winding, including a direct current single-phase detection method and an alternating current overall detection method. The direct current single-phase detection method applies low-voltage direct current to two ends of a winding of any phase of a primary three-phase winding of a motor, and moves a magnetic needle disc from one end of the winding of the phase to the other end of the winding of the phase at a uniform speed, if the magnetic needle disc passes through all coils of the winding of the phase, a magnetic needle rotate at a constant speed for p rounds along the same direction, and the number of pole-pairs of the motor is p, the wiring of the winding of the phase is judged to be definitely correct; and the alternating current overall detection method applies alternating current to the primary three-phase winding of the motor, horizontally places the magnetic needle disc in a position in or near the middle of one side of the three-phase winding to be fixed, and if the magnetic needle continuously rotates at a constant speed, overall wiring of the three-phase winding is judged to be correct, and a linear speed converted from the rotating speed of the needle is the speed of a moving magnetic field of the motor. The method for detecting wiring of the three-phase alternating current winding is simple to operate, visual and direct, and easy to realize.

Description

technical field [0001] The invention relates to the technical field of AC linear motors, in particular to a method for detecting the connection of three-phase AC windings. Background technique [0002] The pulse source system is a relatively new technology used in cross-well seismic detection technology. The important part of it is the three-phase cylindrical linear induction motor for the well logging source. It is composed of a secondary (with a hammer head) that can move up and down. The primary winding of the linear induction motor is fed with a symmetrical three-phase current, and a parallel moving magnetic field is generated inside the motor. The magnetic field cuts the secondary surface conductor to induce potential and induced current, and the current-carrying conductor is subjected to electromagnetic field in the moving magnetic field. The action of the force, so that the secondary hammer rod moves away from the hammer anvil to the top of the device at a linear spe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K3/28
Inventor 阎治安王康游松超肖竟平赵炜程少华
Owner XIJING UNIV
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