Stepper Motor Classification

Stepper Motor Classification: The Stepper Motor Classification based on the construction and principle of operation. These are Variable reluctance motors Permanent magnet motors Hybrid stepping motors Claw pole motors with permanent magnets The stepper motors are used for linear motors also. These are also classified as ‘variable reluctance motors’ and ‘permanent magnet motors’. Variable Reluctance […]


Turbocompressors: The turbocompressors and blowers in the industry require drives rated up to 40 MW. Drives of large rating are also required in steel industry blast furnace blowers in natural gas pipelines and liquefaction processes in wind tunnels chemical process industry. In the upper power range a converter fed synchronous motor is a suitable drive […]

Wound Rotor Induction Motor with Subsynchronous Converter Cascade

Wound Rotor Induction Motor with Subsynchronous Converter Cascade in the Rotor Circuit: The following points favour the application of a slip ring motor having static slip energy recovery scheme in the Subsynchronous Converter Cascade circuit, to drive a centrifugal pump (Fig. 7.10). 1.The delivery rate control of the pump is accomplished by speed control of the […]

Cement Mill Process

Cement Mill Process: The Cement Mill Process has different Stages in Cement Production and they are The raw materials of Cement Mill Process are lime and silica. Alumina and ferric oxide are used as fluxing agents. Collection of raw materials such as lime stone. This is transported to the mill site and crushed there if […]

Types of Steel Rolling Mills

Types of Steel Rolling Mills: Types of Steel Rolling Mills are either hot rolled or cold rolled. These may be either reversing type or continuous type. The motors used for reversing mills need operation in both the directions of rotation. A four quadrant operation of the motor may be required. In the continuous type the […]

Applications of Electric Drives

Applications of Electric Drives: The industrial Applications of Electric Drives are numerous. To arrive at a particular motor of suitable size for a given application, a knowledge of the following is very much necessary: The torque-speed curve of the industrial load is required. This fixes up the type of motor required to drive the load. […]