The brake chopper works by using a series of resistors to create a high resistance path between the wind turbine generator and the grid. This causes the generator to draw less current, which in turn slows down the rotor. The amount of resistance is controlled by a chopper circuit, which switches the resistors in and out of the circuit as needed.
Brake choppers are typically used when the wind turbine is generating more power than the grid can handle, or when the wind turbine needs to be brought to a stop quickly. They can also be used to regulate the rotor speed in order to maintain a constant power output from the wind turbine.
Brake choppers are an essential safety feature for wind turbines, and they help to protect the wind turbine and the grid from damage.
