A wind power generation system includes an excessive current consumption device, an AC input of which is connected between a generator rotor and an excitation converter on a system failure to detect a DC voltage ascent of the excitation converter and operate a shunt circuit on the system failure. The side wings are selectively secured to the chair back when the back is in a raised position to thereby permit use of the chair in a conventional manner. A device according to the invention for removing CO2 from a gas mixture comprises an absorption unit, a desorption unit, and an absorption medium according to the invention that is conducted in the circuit. The mounting lug is configured to removably couple to a mounting bracket at a second joint. The scriptor and interpreter each not only check the syntax of a command in a script, but also that the values for the variables passed as arguments to command are consistent with the values attributed to those variables in preceding portions of the script.