Torque servomotor acts as current generator
A
Motor Technology product story
Edited by the Engineeringtalk editorial team
Jan 14, 2009
Motor Technology, working in partnership with Motor Power Company, has designed a customised torque servomotor that will act as a current generator on a range of vertical-axis wind turbines.
The vertical-axis turbine is a wind power generation concept designed by Quiet Revolution.
The thinking behind it is to produce turbines that operate quietly and efficiently in an urban environment, or, more specifically, at the point of power usage.
Conventional wind turbines are generally unsuitable for urban locations, if for no other reason than the noise they produce while operating.
Quiet Revolution's turbines can be located on rooftops, car parks, near classrooms, homes and other noise sensitive locations.
In order to meet Quiet Revolution's specifications, an SKA DDR direct drive motor was redesigned with a special electrical winding that could be combined with the electronic control and would eliminate any mechanical noise during operation.
Another key factor was keeping maintenance to a minimum; so the bearings, lubricant and lubrication techniques were chosen on the basis of thorough research and testing.
Additionally, the servomotors were designed to have a lifetime of 25 years, despite the fact that mechanical protection had to be limited in order to avoid aggravating the inertia of the system.
The SKA DDR motor with its hollow passing shaft is integrated directly below the vertical triple-blade propeller.
Its job is to act as a current generator driven by the blades that are turned by the power of the wind.
The motor also drives the turbine during start up when it is said to be 'catching' the wind.
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