What are medium voltage drives?

Medium voltage drives (also called VFDs or variable frequency drive) are adjustable speed drives used to control the torque and speed of AC motors. The use of VFDs in industrial powertrains is increasing, in part due to a reduction in their cost and size.

What is a medium voltage VFD?

Medium voltage drives can be either current source inverter or voltage source inverter types, although VSI types are more popular due to high reliability and low harmonic distortion. AC drives in this configuration are referred to as medium voltage multi-level voltage source PWM drives.

How does a VVVF drive work?

Variable Voltage Variable Frequency (VVVF) Lift Drive employs frequency inverter technology which regulates input voltage and frequency throughout the journey, drawing much less current during acceleration and deceleration.

What is VFD and why it is used?

VFD stands for Variable Frequency Drive. They are used for controlling the speed of an AC motor. They are also used for ramping up a motor for a smooth startup, or to prevent a heavy load from straining the motor on startup.

When to use a medium voltage AC drive?

Medium voltage AC drives generally benefit applications that require motors from 500 to 20,000 hp, where the difference in current draw between low voltage and medium voltage becomes substantial. Motors in this range are often used to operate large compressors pumps, and fans in power stations, petrochemical plants,…

What’s the new in medium voltage drives-IEEE web hosting?

Medium Voltage Drive rectifier dc link inverter AC supplyAC motor MV drive Voltage Range dc link Voltage Range Power Range 1kV 3.3 kV 4.16 kV 6.6 kV 2.3 kV 11 kV 15 kV 35 MW Power Range 02 05 1MW2MW 4MW 8MW 12 MW Slide 7 / What’s New with MV Drives & IEEE 1566 – IEEE SAS & NCS 2014

Which is the leading supplier of medium voltage drives?

ABB is a leading global supplier of medium voltage drives in the range of 250 kW to more than 100 MW.

What do you call a medium voltage inverter?

Medium voltage drives can be either current source inverter or voltage source inverter types, although VSI types are more popular due to high reliability and low harmonic distortion. AC drives in this configuration are referred to as medium voltage multi-level voltage source PWM drives. Schematic of a medium voltage multi-level VSI-PWM drive.