As the requirement of electrical energy has been increasing, you are already familiar, renewable energy resources are the important means of electricity and energy conversions. There are different types of renewable energy resources, such as solar pv, hydroelectricity, biomass and wind energy. In this article wind energy importance and the function of contactors in wind turbines has been discussed. You will find various types of DC contactors on our website for multiple purposes. One category of DC contactors serves the energy resources sector. These are used in wind power systems as a DC power control.
Approximately, 22% of all the world’s power supply comes from renewable energy resources and this portion is increasing day by day, as the fossil fuel reserves are depleting vastly. Wind energy has been originated to be a vast power reserve ever since the time when human culture has developed. From that era, wind energy, along with solar energy, is readily available everywhere, its demand is increasing, and many companies are investing in wind power stations. It is proved to be adventitious in terms of generation and expense. Wind speed and power forecasting systems are vital for various reasons such as, for maintenance arrangement.
In these changing times, it is important for any successful company to keep up with the latest trends in power demands and its various components. DC contactors is one of such components of wind energy mechanism, let us see the part of contactors in wind turbines.
Wind energy is expected to have emerging role in renewable energy resources with over 250,000W produced globally. Wind turbines are mature and reliable technology available in multiple size ranging from hundreds of watts to multi giant megawatts. To achieve greater energy efficiency, it is important to increase the system’s operating voltage.
DC contactors are ideal for wind energy application to ensure the connection is maintained under strict conditions. The use of these DC contactors provides utmost safe operation, total insensitivity to voltage loss, energy saving and elimination of risk of coil burning.
DC contactor is an electrically controlled switch used for switching electric power circuit, like a relay except with higher current rating. DC contactors are available in many forms with varying capacities and features. Unlike a circuit breaker, a contractor is not intended to interrupt a short circuit current. DC contactors range from those having a breaking current of several amperes to thousands of amperes and 24 V DC to many kilovolts. The physical size of DC contactors ranges from a device small enough to pick up with one hand, to large devices approximately a meter on a side.
As in induction motors, various designs have been made in wind turbines including the famous double rating engine, but these designs are used for engines of less than 1 MW. Above 600 KW, rated voltage is mostly 690 V. As induction engine is used directly on grid, at least one DC contactor is needed to ensure constant connection and disconnection.