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What are the advantages of speed control using thyrister?

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Question added by muhammad arif , Assistant Engineer , Phoenix armour
Date Posted: 2013/12/08
Mostafa Mohammed ibrahim
by Mostafa Mohammed ibrahim , Instrumentation and control Engineer , Air liquide

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

hassan qutb
by hassan qutb , Facility&Engineering Manager PMP. , مقاولات خاصه

smooth control

Waqar Ahmed
by Waqar Ahmed , Instrument Technician , ADNOC Gas Processing

Most economical operation when cost cosideration, accurate operation is possible, less maintenance, providing operation and wider temperature range.

Amr Saleh
by Amr Saleh , Senior I&C technical office engineer , ENPPI

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

Musharif Hussain
by Musharif Hussain , Sr. Engineer (Instrumentation &Control) , Matiari Group

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.

muhammad arif
by muhammad arif , Assistant Engineer , Phoenix armour

1. Fast Switching Characterestics than Mosfet, BJT, IGBT2. Low cost3. Higher Accuract.