Eddy Current Controls (India) Ltd.

Chalakudy, Thrissur, Kerala

Tachogenerator is a device which generates an electrical output directly proportional to the shaft speed. The voltage thus generated is fed to a speedometer for speed measurement and/or used as a feed-back signal for controlling the speed of a rotating machine/equipment. In every automatic control system, since the system performance is directly related to the TG performance, it becomes essential that the TG must satisfy certain minimum requirements such as

Linearity : The rectified output voltage should be strictly linear with respect to the rotational speed. Output signal: The ripple content in the rectified output signal must be as low as possible.

Temperature Effect : Variations in ambient temperature should have negligible effect on the TG output.

Long-term Stability :

• Instability of output, caused due to aging of parts, shift in magnetic circuits etc. should be minimum. Advantages ALNICO permanent magnet in the rotor assembly gives long term stable operation even under varying ambient temperature.
• Large number of poles (48) results in a high frequency output and hence good dynamic response, linearity and wide speed control, along with low ripple content in the rectified output.
• Rotor and stator assemblies are encapsulated with epoxy resin to prevent any ingress of moisture, dust etc. Stator assembly is housed in aluminium (grade A6 IS617) body to minimize magnetic interaction and consequent losses.
• Grease filled, double shielded ball bearings are used for maintenance free operation. Two mounting options-foot mounted and flange mounted. Speedometer can be calibrated to suit the customers requirements.
• Compact and rugged construction provides longer life with excellent performance even under severe environments. If required, TG can be supplied with rectifier unit, for DC operations

The Radiator Cooling Fan is used in Diesel Electric Locomotives to bring down the temperature of the diesel engine cooling water to the desired level. Drive between the engine and radiator fan consists of an Eddy Current Clutch (ECC) type DBOCN F which is capable of providing variable speed and a Bevel Gear Box which provides mechanical coupling between clutch and the fan.

The constant speed member of the Eddy Current Clutch is a ferromagnetic Drum and is rigidly coupled to the prime mover. Here the prime mover is the engine shaft.

EDDY DYNAMOMETER provides a sophisticated frictionless, compact and economical solution for your electric motor (engine) testing Laboratory. It is a superior sustitute to brake drum dynamometer, Hydraulic dynamometer and the generator resistance bank sets which are presently used in motor (Engine) Laboratories and production factories.The EDDY DYNAMOMETER with control panel is suitable for measurement of motor (engine) torque and speed in RPM. It enables you to smoothly control the load applied on the motor (engine) by using a potentiometer. The machine characteristics like overall efficiency and speed/torque characteristics may be determined under vari- ous load and speed conditions.

ECCIL indulged in the manufacture of the zero-emission, and no-noise vehicle golf cars, powered by an intelligent electric drive where 100% stability and durability is being guaranteed. This smart design electric vehicle serves the major purpose of having a low maintenance, eco-friendly and cost-effective. The light weight module, closed campus, spacious model, responsive steering, hydraulic brakes, inbuilt charger, luxurious design makes this vehicle to convenient for your regular lifestyles or for any commercial purposes like delivery, cargo etc. Various seater facilities available as per the capacity requirement.

The Radiator Cooling Fan is used in Diesel Electric Locomotives to bring down the temperature of the diesel engine cooling water to the desired level. Drive between the engine and radiator fan consists of an Eddy Current Clutch (ECC) type DBOCN F which is capable of providing variable speed and a Bevel Gear Box which provides mechanical coupling between clutch and the fan.

The constant speed member of the Eddy Current Clutch is a ferromagnetic Drum and is rigidly coupled to the prime mover. Here the prime mover is the engine shaft.

Your productivity depends verymuch on the efficiency of your Material Handling System. For the movements of goods to be more specific and to ensure smooth flow of goods in your production unit, we will simply put them on wheels for you. Presenting our ELECTRICALLY OPERATED PLATFORM TRUCKS

Our CNC machining facilities are made for both low-volume production of end-use components and rapid prototyping.

Dynodrive consists of Eddy Current Clutch coupled to a prime mover (usually a 3 phase Squirrel cage Induction Motor).There is no direct coupling between the Motor Shaft and the O/P Shaft. Torque is transferred from I/P shaft to O/P shaft by magnetic coupling. Eddy Current clutch consists of a ferromagnetic drum coupled to the prime mover and a multipole inductor made from special alloy steel rotates freely within the drum which is coupled to the load and an excitation coil.Variable

Excitation Voltage ranging from 0 to 80 VDC is given to Exc. Coil though a Thyristor Controlled Electronic Regulator. Depending upon the Exc.Voltage , O/P Shaft rpm varies from 0 to 1200 rpm (For 1500 rpm Prime mover).Max. Speed obtained at the O/P of Dynodrive will be 80% of the speed of the prime mover. Min Speed will be 10 % of the Max speed obtained at O/P shaft. Ie, if the prime mover rpm is 1500, max speed at the O/P will be 1200 rpm (80% of prime mover speed) and min speed will be 120 rpm(10 % of 1200). Dynodrive O/P will deliver Standard Torque of the Prime mover at any rpm ranging for 120 to 1200 rpm.

All eddy current variable speed drives have an integral tacho-generator mounted around the output shaft, to give voltage and frequency proportional to speed, which is used for speed reference feed back signal to the controller and maintains the output speed within 2% for the load changes from 90% to 10%. It can also be used for speed indication. We are manufacturing 3 Types of Dynodrives ranging from 0.4 KW up to 300 KW.