Monday, February 4, 2019

SWITHGEAR AND PROTECTION


SWITCH GEAR EQUIPMENT

The devices used for following activities under normal and abnormal conditions in a system are known as switchgear equipment
-          Switching Devices
o   Circuit Breakers
o   Isolators
o   Earth Switch
o   Fuse Switch
o   MCCB
o   MCB

Torque characteristic of the DC motor

Torque characteristic of the DC motor

 equivalent circuit of the PM Dc motor

Saturday, February 2, 2019

Servo drives and power electronic controllers

Dc and ac servo drives

Most commonly used servo drives in industries are DC Servo drives 

Types:-

  1. DC Servo drives
  2. Brush less DC (BLDC) drives
  3. 3 – Phase induction motor base servo drives
  4. Permanent magnet synchronous (PMS) base servo drives