Computer simulation of an autonomous contra-rotating wind turbine taking into account parameter differences and wind rotor work conditions
The work of an autonomous contra-rotating vertical axis wind turbine (VAWT), which uses a special device, i.e. a rotary transformer, has been examined in the article. The latter performs two functions: contactless transmission of generated electric energy from the moving armature of synchronous generator with permanent magnets and automatic control of VAWT electrical load. To construct the quasi-optimal control system, the estimator of average wind speed, which covers two wind rotors, was developed.