subject: Variable Frequency AC Drives: Aid to enliven electric equipments [print this page] Variable Frequency AC Drives: Aid to enliven electric equipments
Direction is important aspect of any activity, whether its about making decision or functioning of any machines. Talking about machines which are programmed to perform the task. Mechanical equipments are without brains, hence they need a control so that they can perform their incorporated applications.
We, humans, are blessed with the brains and have ability to think and take decisions. Similarly, adjustable speed drive in an equipment control the speed of the machinery. There are many devices used in the industries are operated at varying speeds for different products. In several procedure, there might be a demand adjusting flow.
There are drives which are used to control the speed of the equipments which can vary from several pre-set defined ranges, are termed as adjustable. The adjustable speed drivers may be hydraulic, electromechanical or electronic. With the advent of new technology, old becomes passe, and new ones mark their presence, equipments are fitted with Programmable Logic Controllers.
Out of three, electric adjustable speed drive holds huge vitality in current industrial scenario. These drives have both motor and speed control unit. Generally, there are three categories which being DC drives, AC drives and Eddy current. DC drives are basically DC motor speed control systems. They are used in DC electric motor, golf trolley, electric wheel chair and in many more devices. DC drives make use of small direct current which leads to the production of lots of power and torque.
An eddy current drive integrates fixed speed motor and an eddy current clutch. The clutch has fixed speed rotor and an adjustable speed rotor which is separated by a small air gap. The third category of electric adjustable speed drive is AC drive. The main components of this one is to supply the required current and voltage which can be used by the machine. should be provided with the minimum and maximum speed settings, so that the drives get adjusted to the user's process. There are programmable logic controllers which shut itself after detecting any problem.
Main action of Variable Frequency Ac Drives takes place in motor. All the loads moved by motor is with procedure of magnetism. Variable Frequency Ac Drives apply magnets to move a load. These drives are catering to meet the current industrial applications in effective way.
