Hassan Gazal
Junior Member level 3
dear all ,
i have a big issue , i made circuit using 8051 to control 3 phase AC (380Volt) motor speed using firing angle
it's worked well , but the problem is the motor speed is changed by control firing angle which control also voltage , but in this case the motor become very hot after 4 seconds from starting.
i asked someone and he told me that i should not only control motor speed using voltage but also using frequency .
so can any one how to change motor frequency using 8051 controller.
i have a big issue , i made circuit using 8051 to control 3 phase AC (380Volt) motor speed using firing angle
it's worked well , but the problem is the motor speed is changed by control firing angle which control also voltage , but in this case the motor become very hot after 4 seconds from starting.
i asked someone and he told me that i should not only control motor speed using voltage but also using frequency .
so can any one how to change motor frequency using 8051 controller.