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Thyristor used here as an electronics switche
it has high spead,avary range of current according to type of thyristor
Thyristor is more suitable in this application more that Transistor,JEF,MOSFET,and IGBT
smooth control
Most economical operation when cost cosideration, accurate operation is possible, less maintenance, providing operation and wider temperature range.
well it is used in soft starters for smooth motor start using increments in the firing angle till full load is applied then directly connected to motor and thyristors bypassed
Here are some advantages, which I have compiled from various sources:
1. low power consumption. The drive is voltage controlled one rather then rheostat control..so powerloss will be reduced which will improve the efficiancy2. easy operation
3. no rotating parts
4. smoother control can be possible unlike step variation in the speed in the general rheostat control
5. wide range of control is possible with the provision of firing angle control
6. size of controller will be small and the heat dissipation provisions are also not much larger as in case of rheostat controllers
7. with the advancement of electronic devices its manufacturing cost is very much reduced so will be cheaper than the rheostatic.
8. although has many advantages the lifetime is limited and depends on handling,supply etc.
1. Fast Switching Characterestics than Mosfet, BJT, IGBT2. Low cost3. Higher Accuract.
