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2. Direct torque control - Wikipedia

   en.wikipedia.org/wiki/Direct_torque_control

   Thus it is not possible to control the motor if the output frequency of the variable frequency drive is zero. However, by careful design of the control system it is possible to have the minimum frequency in the range 0.5 Hz to 1 Hz that is enough to make possible to start an induction motor with full torque from a standstill situation. A ...

3. Variable-frequency drive - Wikipedia

   en.wikipedia.org/wiki/Variable-frequency_drive

   Small variable-frequency drive Chassis of above VFD (cover removed). A variable-frequency drive (VFD, or adjustable-frequency drive, adjustable-speed drive, variable-speed drive, AC drive, micro drive, inverter drive, variable voltage variable frequency drive, or drive) is a type of AC motor drive (system incorporating a motor) that controls speed and torque by varying the frequency of the ...

4. ABB Motors and Mechanical - Wikipedia

   en.wikipedia.org/wiki/ABB_Motors_and_Mechanical

   In 2011, Baldor was acquired by ABB Ltd of Switzerland in an all-cash deal of US$4.2 billion ($1.1 billion debt included). The company continued to operate as Baldor Electric Company A Member of the ABB Group. On March 1, 2018, Baldor Electric Company's name was dissolved into the ABB brand, becoming ABB across all of its locations.

5. Vector control (motor) - Wikipedia

   en.wikipedia.org/wiki/Vector_control_(motor)

   In vector control, an AC induction or synchronous motor is controlled under all operating conditions like a separately excited DC motor. [21] That is, the AC motor behaves like a DC motor in which the field flux linkage and armature flux linkage created by the respective field and armature (or torque component) currents are orthogonally aligned such that, when torque is controlled, the field ...

6. Motor control center - Wikipedia

   en.wikipedia.org/wiki/Motor_control_center

   Motor control centers are usually used for low voltage three-phase alternating current motors from 208 V to 600 V. Medium-voltage motor control centers are made for large motors running at 2300 V to around 15000 V, using vacuum contactors for switching and with separate compartments for power switching and control.

7. Synchro - Wikipedia

   en.wikipedia.org/wiki/Synchro

   In a motion picture interlock system, a large motor-driven distributor can drive as many as 20 machines, sound dubbers, footage counters, and projectors. Synchros designed for terrestrial use tend to be driven at 50 or 60 hertz (the mains frequency in most countries), while those for marine or aeronautical use tend to operate at 400 hertz (the ...