Braking System

Manufacturer & Exporter of Braking System. Our product range also comprises of Permanent Magnet Generator, Emergency Overspeed Governor and Permanent Magnet Motor.

With whole new concepts, our company is dedicated towards manufacturing and supplying the most efficient Braking System. Considering miscellaneous necessities of our prominent clients, we offer these systems in a number of specifications to choose from. These systems are carefully designed by a team of very talented professionals. We make sure to offer this array to the clients at budget friendly prices. 

Features:

• Precision-designed
• No maintenance
• High performance

Product Details:

• Some environmental conditions, for instance hurricanes, include very high wind speeds. This may result in turbine runaway and destruction of the wind turbine. Additionally, it may be necessary to periodically stop the wind turbine spinning, if there is a mechanical or electrical fault or even during periodic maintenance. Thus some kind of braking system for the wind turbine is required
• Many turbines include a mechanical braking design (i.e. furling or tilting the axis of the turbine away from incoming wind). Alternatively, frictional beaks may be incorporated into the wind turbine. The disadvantage of such system is the short life expectancy and additional system cost and complexity of these systems
• Another option is to use electrical braking. Under high wind conditions heavy dump loads may be connected directly to the generator to slow the turbine enough causing the blades to "stall" aerodynamically. Once stalled, the torque produced by the turbine is greatly reduced, and it will spin at a very slow speed or stop
• The braking system design consists of a relay that connects the generator to a dump load when activated. In sufficiently strong winds the generator output will exceed a pre-set trigger level, i.e. breaking threshold. During operation the controller is continuously measuring the generator voltage (and thus speed) via the voltage divider. When the generator voltage exceeds the breaking threshold the breaking relay is activated, connecting a high power, low resistance dump load directly to the generator output. An anti-shock inductor has been placed in series with the dump load to avoid arcing at the contacts
• Stalling the wind turbine to avoid run-away is the primary purpose of the breaking system. However it can also be used to avoid the over charging the load (i.e. batteries) during high winds. If the controller senses that the batteries are being over charged, it will reduce the duty cycle, reducing the charging current. This will also unload the wind turbine and cause it to rotate faster. If the turbine is near the maximum speed a dump load can be added instead, slowing the turbine and reducing its power production. The presence of different dump loads is helpful in the reducing the turbine power by converting it to heat in the dump loads. Alternatively some useful intermittent loads, such as pumps, can be used instead of dump loads, only being activated at high wind speeds
• Breaking is initially overridden manually, and the generator is allowed to run over the breaking threshold limit. At approximately 7 seconds breaking is re-enabled, and the controller immediately goes into breaking mode, reducing the rotor speed to less than 30 rpm. At intervals of approximately 10 seconds the controller releases the breaks allowing the turbine to spin up until the threshold is again exceeded, and break is then reapplied. This continues until the wind speed is reduced below the breaking threshold, and normal operation ensues