Electric Traction Motor Control
Electric traction motors are used in a variety of application including electric vehicles trains and
industrial machineries these motors at typically control using of variety of techniques including
voltage control current control and field oriented control.
Voltage control is the simplest method of controlling and electric traction motor in these
methods of voltage applied to the motor is varied to control its speed and torque the method is
suitable for simple application such as controlling the speed of an electric fan but it is not
suitable for more companies application such as controlling the speed of an electric vehicle.
Current control is a more advanced method of controlling an electric traction water in these
method the garden flowing through the motor is varied to control its speed and torque these
method is suitable for more complex application suggest controlling the speed of electric
vehicle but requires more advanced control electronics.
Field oriented control
Field oriented control is a highly advanced method of controlling and electric section motor in
these method the current flowing through the stator of the motor is controlled to control the
magnetic field in the router these method allows for precise control of the speed and torque of
the motor and his suitable for a wide range of application including electric vehicles and
Advantage of field oriented control
Field oriented control as several advantage over other methods of controlling electric traction
motors one advantage is that it allows for precise control of speed and torque of the motor
these is particularly useful for application such as electric vehicles and industrial machinery by
precise control is important and other advantage is that it is less sensitive to variation in the
load on the motor which makes it more reliable.
Disadvantage of field oriented control
Field oriented control has some tease advantages as well one disadvantage is that it request
advanced control electronics which can be costly additionally these method can be more
complex to implement then other methods such as voltage control or car and control.
Implementation of field oriented control
Field oriented control can be implemented using a variety of techniques such as space vector
control direct or control and direct field control the choice of technique depends on the specific
application and the requirements for Speed and torque control.
Space vector control
Space vector control is want technique that can be used to implement field oriented control
these technique use a space vector modulation algorithm to control the strator gardens of the
motor in order to control the magnetic field in the rotor this technique is particularly suitable
for application for high speed and torque control is required.
Direct torque control
Direct aur control is another technique that can be used to implement field oriented control
these technique uses a direct control algorithm to control theater current of the motors in
order to control the magnetic field in the router these technique is particular is suitable for
application for hide dynamic performance is required.
Direct field control
Direct field control is a third taking that can be used to implement field oriented control these
technique uses are direct field control algorithm to control the stetter current of the motor in
order to control the magnetic field in the router these technique is particularly suitable for
application for high racism and stability is required.
In summary electric action motor control can be achieved by using voltage control current
control and field oriented control field oriented control is the most advanced method as it
allows precise control of the speed at dark of the motor but it requires advanced control
electronics and more complex to implement.