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So i have been given this question:
You have also been asked to produce a circuit design that can control the speed and direction of a conveyor with a AC to DC motor thyristor system. What are the the operational features (how it works with speed and direction circuit diagram/s)
I am really confused how a AC to DC motor thyristors controls the direction of the motor. I originally thought that on a 1 phase system this would look like the diagram provided. Thyristor T1 and T3 are fired together when the supply is A is positive and then T2 and T4 are fired together when B is positive creating a rotation. To rotate the motor the opposite direction you will have to fire the thyristors when both terminals are negative thus giving you your stop, start and direction control. But I'm unsure if this is now the case as I'm finding it really hard to find information on the direction control property's of this system.
Firstly I'm wondering if this circuit I've attached can be used to control the direction of the motor and secondly if my explanation isn't right how do you control the direction of the motor?
Any help will be appreciated, thanks in advance.
You have also been asked to produce a circuit design that can control the speed and direction of a conveyor with a AC to DC motor thyristor system. What are the the operational features (how it works with speed and direction circuit diagram/s)
I am really confused how a AC to DC motor thyristors controls the direction of the motor. I originally thought that on a 1 phase system this would look like the diagram provided. Thyristor T1 and T3 are fired together when the supply is A is positive and then T2 and T4 are fired together when B is positive creating a rotation. To rotate the motor the opposite direction you will have to fire the thyristors when both terminals are negative thus giving you your stop, start and direction control. But I'm unsure if this is now the case as I'm finding it really hard to find information on the direction control property's of this system.
Firstly I'm wondering if this circuit I've attached can be used to control the direction of the motor and secondly if my explanation isn't right how do you control the direction of the motor?
Any help will be appreciated, thanks in advance.