|
AC and DC Drives and Systems Home
Product
Literature
AC vs. DC
Retrofit vs. New
Open Loop vs.
Closed Loop
AC Sensorless Vector vs. Closed
Loop
CONTACT US
Phone:
(216) 642-1230
Fax:
(216) 642-6037
E-Mail:
Drive and System Sales
|
AC Sensorless Vector vs. Closed
Loop
 |
|
When an AC drive is placed in sensorless vector
mode, it will model the motor using an estimator algorithm and measurements
of motor current and voltage to estimate where the motor rotor is located.
The firing circuits then apply pulses of voltage to the motor stator
windings to push the rotor into the proper location, with the proper amount
of force. Sensorless vector works best
when precise positioning is not required, and the load being driven by the
motor is highly linear. The sensorless vector algorithms fail when the
estimation is not valid, or when it is not precise enough to meet the
application needs.
|
|
For more information about specific loads and
applications, visit our section on
Open Loop vs. Closed Loop. |
|
Avtron offers a full line of
encoders and tachometers that improve drive and application
performance and safety. |
|
