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2. 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 ...

3. Vector control (motor) - Wikipedia

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

   Vector control, also called field-oriented control (FOC), is a variable-frequency drive (VFD) control method in which the stator currents of a three-phase AC or brushless DC electric motor are identified as two orthogonal components that can be visualized with a vector.

4. Motor drive - Wikipedia

   en.wikipedia.org/wiki/Motor_drive

   A variable frequency drive (VFD) or variable speed drive (VSD) describes the electronic portion of the system that controls the speed of the motor. More generally, the term drive, describes equipment used to control the speed of machinery. Many industrial processes such as assembly lines must operate at different speeds for different products.

5. Inverter compressor - Wikipedia

   en.wikipedia.org/wiki/Inverter_compressor

   The drive modulates the compressor speed and prevents it from operating out of the compressor operating limits. The inverter frequency drives need to use algorithms developed specifically for heating, ventilation and air conditioning (HVAC) or for refrigeration. They ensure that the system will run within the application constraints.

6. Variable-speed air compressor - Wikipedia

   en.wikipedia.org/wiki/Variable-speed_air_compressor

   However, variable speed drive compressors are not necessarily appropriate for all industrial applications. If a variable speed drive compressor operates continuously at full speed, the switching losses of the frequency converter result in a lower energy efficiency than an otherwise identically sized fixed speed compressor. Where demand remains ...

7. Jayden Daniels throws for 5 TDs as the Commanders end the ...

   www.aol.com/jayden-daniels-5-td-passes-213404347...

   Daniels bounced back from two interceptions, including one in the final minutes, to lead a 57-yard touchdown drive against the NFL's best defense. Washington (10-5) is now on the verge of making ...

8. Induction motor - Wikipedia

   en.wikipedia.org/wiki/Induction_motor

   Variable frequency drives implement the scalar or vector control of an induction motor. With scalar control, only the magnitude and frequency of the supply voltage are controlled without phase control (absent feedback by rotor position). Scalar control is suitable for application where the load is constant.

9. Some call it Twixmas. Others call it Feral Week. The ... - AOL

   www.aol.com/lifestyle/call-twixmas-others-call...

   The holidays are happening and we all need a break. Why taking time off during Twixmas matters. (Photo illustration: Yahoo News; photos: Getty Images) (Photo illustration: Yahoo News; photos ...