Efficiency at low windspeed increased by firing-angle control. Power coupled from wind-driven induction motor/generator to ac powerline with help from circuit. Circuit reduces power consumed by field windings thereby improving efficiency at low windspeeds. Circuit includes zerocrossing detector, ramp generator and comparator similar to those used to set firing angles for thyristors in power factor motor controllers.
Powerline Coupler for Windmill Motor/Generators
NASA Tech Briefs ; 8 , 3
01.01.1985
Sonstige
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Englisch