Polyimide corona resistance multi-path synchronization test device
A polyimide, multi-channel synchronization technology, applied in the direction of testing dielectric strength, etc., to achieve the effect of stable and efficient testing process
Inactive Publication Date: 2018-07-17
SICHUAN UNIV
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Problems solved by technology
At present, there is no measuring device for effectively evaluating the corona resistance performance of polyimide, and capable of multi-channel automatic operation, and the rising time of high-voltage and high-frequency pulse voltage remains unchanged after one or multiple channels are broken down.
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[0017] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.
[0018] See figure 1 , Is the principle block diagram of the multi-channel synchronous testing device for polyimide corona resistance of the embodiment of the present invention. The multi-channel synchronous test device for polyimide corona resistance performance of the embodiment of the present invention includes a pulse power supply 1, a main control module 2, an interactive module 3, a measurement module 4, and a recording module 5.
[0...
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The present invention discloses a polyimide corona resistance multi-path synchronization test device. The device comprises a pulse power supply, a main control module, an interaction module, a measurement module and a record module. The interaction module is configured to receive voltage parameters set by a user; the main control module is configured to control the pulse power supply to generate multipath high-frequency and high-voltage pulses and respectively apply the multipath high-frequency and high-voltage pulses to many polyimide samples according to the voltage parameters, and is configured to start the measurement module and the record module; the measurement module is configured to measure whether each polyimide sample generates breakdown or not; when at least one polyimide samplegenerates breakdown and not all the polyimide samples generate breakdown, the main control module controls the voltage rise time of each high-frequency and high-voltage pulse to remain unchanged, andwhen all the polyimide samples generate breakdown, the main control module control turn-off of the pulse power supply; and the record module is configured to record the breakdown time. The polyimidecorona resistance multi-path synchronization test device can perform multipath synchronous corona resistance test and does not influence the whole operation after a single path generates breakdown.
Description
Technical field [0001] The invention relates to the technical field of insulation material corona resistance detection, in particular to a multi-channel synchronous testing device for polyimide corona resistance. Background technique [0002] Frequency conversion motors work under high-frequency, fast-changing repetitive pulse voltages, and the electrical stress generated by the end overvoltage is unevenly distributed in the motor stator insulation, which can easily cause partial discharges to gradually corrode the surface of the insulation material, and eventually insulation failure. In order to improve the insulation reliability of variable frequency motors, the insulating materials that form the insulating structure are generally required to have corona resistance. Polyimide is a commonly used inter-turn insulating material for variable frequency motors, and its corona resistance has become an important factor in evaluating the quality of motor insulation. [0003] In order to ...
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IPC IPC(8): G01R31/12
CPCG01R31/12
Inventor 王鹏赵政嘉李想雷勇周群
Owner SICHUAN UNIV