Slip Ring serves as an indispensable component for Wind Power Generating Set. If the paddle of Wind Power Generating Set would be like an arm and main system would be like a brain, so the Slip Ring acts as its nerve center for connecting the above-mentioned parts. Its core role remains the connector of the power and the control signal between the static part (like tower cylinder) and the rotated part (like cabin and the rotator) as well as plays the role for stable and continuous transmission for the data, which can effectively avoid convolve or twist off its transmission cable in the process of its 360-degree infinite rotation.
In the perspective its structure and working principle, Slip Ring is composed of its rotating conductive ring (the rotator) and its static brush (the stator). When the Wind motor is running and the cabin is rotating accompanied by the wind, the Slip Ring fixed on its rotating shaft is rotating at the same time, which can achieve the function of its close connection between the brush and the surface of the Slip Ring through related elastic pressure. With that precise slide-and-contact mechanism, the Slip Ring can maintain its stable electric connection in the process of dynamic rotation, ensuring related low loss and uninterrupted two-way transmission among its megawatt-level large current, each and every sensor signal and control instruction as well.
Owing to the fact that Wind Power Generating Set is generally installed in remote areas and in the sea, the structure of the Slip Ring is required with an extremely high-level technical standards because of series of harsh environment such as an extreme temperature, strong wind, salt and spray, sand and continuous vibration. It should be required with an extremely reliability, a longer service life (at least more than 20 years) and excellent prevention level (IP 65 or above). Moreover, for the purpose of reducing its expensive operation cost at high altitudes, modern Slip Ring tends to maintenance-free design and selects wearable precious metal materials and special sealed structure. Once breaking down, the broken Slip Ring will lead to severe safety accidents such as electrical power loss, the loss of the communication of its control system or motor breakdown caused by related overspeed. Therefore, Slip Ring, namely a core hub, can guarantee its safety, efficiency and stable operation for the Wind Power Generating Set.
