Electric drive

What is the electric drive?
In many of the industrial application, electric is one of the most important components. In many of the industrial application, electric is one of the most important components. Read more

Application of  electric drives :
1. Paper mill 2. Textiles mill 3. Fans 4. Pumps etc Read more 

Advantages and disadvantages of electric drive 
Advantages: 1. Very large range torque, speed and power 2. Free from pollution
Disadvantages: 1. Cause noise pollution 2. The initial cost of the system is high Read more

Single phase DC drives :

Single phase DC drives :
The general circuit arrangement for single phase dc drives as shown in the figure. The arrangement for the speed control of a separately excited dc motor from single phase source. Read more

Single phase DC drive features :
Let we check features of single-phase DC drives one by one below: Linear torque control, Adjustable current limit. Read more

Single phase half wave converter drives :
A single phase half wave converter drive a shown in the figure.  A separately excited dc motor, Read more 

A separately excited dc motor, fed through two single-phase semi converter, one for the armature circuit and the other for the field circuit, is shown in the figure. Read more

In single phase full converter, there are two full converters, one converter feeding the armature circuit and the other converter feeding the field circuit of a separately excited dc motor are shown in circuit diagram. Read more

A single phase dual converter drive, obtained by connecting two full converters in antiparallel, as shown in the figure. The feeding is a separately excited dc motor. Read more

Three phase DC drives :

Large dc motor is always three phase converters for their speed control. A three-phase controlled converters feed power to the armature circuit for containing speeds below base speed. Read more 

Three phases half wave converter drive consisting of two converts and a separately excited dc motor. Read more 

The circuit diagram of 3 phase semi-converter feeding a separately excited dc motor is shown in the figure. Read more

The circuit diagram of one three-phase full converter in the armature circuit and 1 phase full converter in the field circuit, is as shown in the figure. Read more

The schematic diagram of three phases dual converter d drive as shown in the figure. As per the circuit diagram converter, 1 allows motor control 1 and 4 quadrants whereas with converter 2 the operation in 2 and 3 quadrants obtained. Read more