Application of slip ring in direct drive motor rotor

With the maturity of domestic wind power technology , Wind turbines are also starting to miniaturize , From inland fan to large-scale 、 Direct drive type 、 Offshore wind power development . The development of direct drive fan technology is particularly rapid , Especially in large fans, direct drive technology is more advantageous . In direct drive generators , In order to correctly measure and control the rotor speed during operation , Rotor speed measuring device is required . Especially for safety , At least two speed devices are required . The usual practice is to make holes in the friction plate inside the generator to improve the speed , However, the disadvantage of the speed device is that it is inconvenient to maintain 、 Replace . Another common method is to install an encoder at one end of the slip ring coaxial with the generator for speed measurement , This speed mode is safe and reliable , But the cost is high .

Mofuron electronics has the technical problems mentioned above , Provide low cost 、 Replace the rotor slip ring of direct drive motor with simpler maintenance . The stationary part that will be fixed to the slip ring on the motor stator 、 The rotating part of the slip ring connected with the impeller hub connected with the rotor 、 The signal panel is fixed on the stationary part of the slip ring via a fixing frame 、 Stationary part of slip ring 、 The stator signal panel of the motor is uniformly provided with a plurality of holes along the disc , The hole corresponds to the position of the proximity switch . The holes on the signal board are round holes 、 Square hole 、 Elliptical hole 、 Long hole 、 Diamond shaped hole or fan-shaped hole . The beneficial effect of the utility model is , Through the slip ring rotating part connected with the windmill hub and the signal panel arranged on the slip ring rotating part , Realize synchronous rotation of signal panel and wheel hub , Detect the pulse signal through the proximity switch , To the external control system , The structure of detecting the speed of the motor rotor is simple 、 The cost is low , Exposed outside the motor housing , Easy to replace and maintain .