Stabilization of the Output Voltage of an Autonomous Asynchronous Generator of a Wind Power Plant

Abstract: In autonomous sources of electric energy driven by internal-combustion engines or wind or hydraulic motors, asynchronous generators are used, which, as a rule, require output voltage regulation, since it is very difficult to provide them with a power drive. In wind power plants, the voltage at generator terminals with sufficient wind strength mainly depends on the load level. The expansion of the functionality of an asynchronous generator and its very use often directly depend on the possibility of regulating the output voltage. Stabilization and regulation of the voltage of an asynchronous generator, as a rule, is carried out by changing the magnetic flux by changing the capacitance of capacitors connected to the stator windings (or phase rotor), magnetization of the stator core, voltage changes on capacitors, etc. This paper proposes a method for stabilizing the output voltage of an autonomous asynchronous generator of a wind power plant operating under special conditions. The asynchronous generator contains generating and regulating parts separated by a sealed partition. The proposed design allows one to adjust the output voltage when the load of the generator changes by means of spring-loaded rotation of the core with a winding that feeds the load relative to the core with the stator winding of the generator fixed in relation to it. © 2022, Allerton Press, Inc.