Synchronous motor temperature rise test system and method
A technology for synchronous motors and testing systems, applied in motor generator testing, thermometers, measuring devices, etc., can solve problems such as the large difference between the capacity of frequency converters and synchronous motors, and the inability to operate, so as to reduce test costs and improve test efficiency Effect
Active Publication Date: 2016-03-16
SUZHOU INOVANCE TECH CO LTD
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Problems solved by technology
[0006] The technical problem to be solved by the present invention is to provide a synchronous motor temperature rise test system and method based on VF separation control in view of the problem that the above temperature rise experiment cannot be operated when the capacity of the frequency converter and the synchronous motor have a large difference
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[0026] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0027] Such as figure 2 Shown is a schematic diagram of the first embodiment of the synchronous motor temperature rise test system of the present invention. The synchronous motor temperature rise test system in this embodiment includes an asynchronous motor 23 rigidly connected to the synchronous motor 21 to be tested, a first frequency converter 22 that drives the synchronous motor 21 to run, a second frequency converter 24 that drives the asynchronous motor 23 to run, and The temperature rise display unit 25 , wherein the first frequency converter 22 includes a current detection unit 223 , a st...
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The invention provides a synchronous motor temperature rise test system, which includes a temperature rise display unit, an asynchronous motor rigidly connected with the synchronous motor, a first frequency converter and a second frequency converter; the first frequency converter includes a current detection unit, a starting a control unit and a step-down control unit; the second frequency converter includes an operation control unit. The invention also provides a corresponding method and a system for controlling two frequency converters through a control unit to realize temperature rise testing. The invention uses VF separation to control the synchronous motor, which can avoid the failure of vector control loading caused by the mismatch of equipment capacity and the inability to perform temperature rise test, and at the same time reduce the test cost and improve the test efficiency.
Description
technical field [0001] The invention relates to the field of synchronous motor testing, and more specifically relates to a synchronous motor temperature rise testing system and method. Background technique [0002] When testing the temperature rise of the motor, the temperature rise test of the direct load method is usually used, which uses a pair of rigidly connected units to do the towing test, one of the motors is used as the motor under test, and the other is used as the accompanying motor to achieve load loading. . [0003] Such as figure 1 As shown, when the motor to be tested is a synchronous motor 11 and the accompanying motor to be tested is an asynchronous motor 12, when testing the performance of the synchronous motor under rated load conditions, usually the second frequency converter 14 uses vector control mode to control the operation of the asynchronous motor 12, In order to realize load loading, the synchronous motor 11 uses the vector control mode through t...
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IPC IPC(8): G01R31/34G01K13/00
Inventor 林喜波林建洪
Owner SUZHOU INOVANCE TECH CO LTD