FAULT AND ABNORMAL CONDITIONS
The abnormality conditions may exist in a power system due to following
reason
- Operational fault work fault
- system or network fault
Wednesday, February 6, 2019
Tuesday, February 5, 2019
Structure of DC servo drives
c 1.Closed
loop drives
There
are two system structures
o
direct current limit structure
o
inner current –loop structure
current limit (Ip) is set by the user and its specified upper limit for transient power current limit action grantees that armature current Ia will not exceed (Ip)
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
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:-
- DC Servo drives
- Brush less DC (BLDC) drives
- 3 – Phase induction motor base servo drives
- Permanent magnet synchronous (PMS) base servo drives
Subscribe to:
Posts (Atom)