Eddy Current Brake Applications

This reminded me of another type of brake — the eddy current brake (also known as magnetic brake). Whereas the other model was a study in heat transfer, eddy current brakes deal with electromagnetics. Basic Structure of Eddy Current Brakes. Eddy current brakes basically consist of a rotating disc (made of conductive material) and a permanent.

Eddy current brake applications. Eddy Current Adjustable Speed Drives: With the help of feedback controller an eddy current coupled speed drive can be achieved. It finds applications in metal forming, conveyors, plastic processing etc. Metal Detectors: It detects present of metals inside rocks, soils etc. with the help of eddy current induction in the metal if present. Such an application is the eddy current brake. Applications of Eddy Current Brakes For additional safety on long decants in mountain area For high speed passenger and goods vehicle. Eddy current brakes are best substitutes for ordinary brakes, which are being used nowadays in road vehicles even in trains, because of their jerk-free operation. Here are 5 familiar applications of the eddy current brake. 1. Gym Equipment. One of the most common places we may see eddy currents at work is while we’re putting ourselves to work. Exercise equipment utilizes this innovative technology in many ways. Modern work out machines use eddy currents to create a smooth transition. Eddy-Current Brake Dynamometers (WB Series) are ideal for applications requiring high speeds and also when operating in the middle to high power range. Eddy-Current Brakes provide increasing torque as the speed increases, reaching peak torque at rated speed. The dynamometers have low inertia as a result of small rotor diameter.

Typical applications for eddy current testing include: Crack detection. Eddy current crack detection equipment can be divided into high frequency instruments for finding surface breaking cracks in ferrous and non-ferrous materials and low frequency instruments for finding subsurface cracks in non-ferrous materials. Eddy current brakes use the drag force created by eddy currents as a brake to slow or stop moving objects. Since there is no contact with a brake shoe or drum, there is no mechanical wear. However, an eddy current brake cannot provide a "holding" torque and so may be used in combination with mechanical brakes, for example, on overhead cranes. Eddy current can be minimised by using thin laminated sheets instead of solid metal. Applications of Eddy current (i) Dead beat galvanometer . When current is passed through a galvanometer, the coil oscillates about its mean position before it comes to rest. To bring the coil to rest immediately, the coil is wound on a metallic frame. CONTENTS: Introduction of Eddy Current. Introduction of Eddy Current Brake. Working Principle. Types of Eddy Current Brakes. Advantages and Disadvantages. Applications. Conclusion. 3. EDDY CURRENT: An Eddy Current is a Swirling current set up in a Conductor in response to a Change in Magnetic Field. 4.

Applications:- For additional safety on long decants in mountain area For high speed passenger and goods vehicle. Eddy current brakes are best substitutes for ordinary brakes, which are being used nowadays in road vehicles even in trains, because of their jerk-free operation. In mountain areas where continuous braking force is needed, for a. A detailed three-month investigation in 2002 established that the use of the eddy-current brake for service applications resulted in a substantial reduction in the wear of the trains' conventional brake disks. At present DB spends around €2m a year replacing worn brake linings on the ICE3 fleet alone, so there are obviously significant. What is an eddy current brake?. Conversely, other scientists and engineers saw a great benefit in eddy current and used them in several applications such as metal detectors, induction heating and cooking, induction motor, eddy currents brakes, NDT sensors, etc. An eddy current is a current set up in a conductor in response to a changing magnetic field. They flow in closed loops in a plane perpendicular to the magnetic field. By Lenz law, the current swirls in such a way as to create a magnetic field opposing the change; for this to occur in a conductor, electrons swirl in a plane perpendicular to the.

Air and water-cooled brakes from 1.5 through 100 HP. Dynamatic® offers a wide range of Eddy Current brakes engineered to meet your needs. We offer both air-cooled and water-cooled designs built with our reliable and durable Eddy Current technology for long service life. An eddy current brake, also known as an induction brake, electric brake or electric retarder, is a device used to slow or stop a moving object by dissipating its kinetic energy as heat. Unlike friction brakes, where the drag force that stops the moving object is provided by friction between two surfaces pressed together, the drag force in an eddy current brake is an electromagnetic force. Minimization of Eddy Current. We can reduce eddy currents but cannot eliminate them. To minimize the eddy currents, the metal core to be used in an appliance like dynamo, transformer, choke coil, motor etc. is taken in the form of thin sheets. Each sheet is electrically insulated from the other by insulating varnish like lacquer. Eddy current brakes come in two basic flavors—linear and circular. Linear brakes. Linear brakes feature on things like train tracks and rollercoasters, where the track itself (or something mounted on it) works as part of the brake. Photo: The linear eddy-current brakes from a roller coaster.