Home » Wiki » VFD: Current Source Inverter (CSI)

VFD: Current Source Inverter (CSI)

The VFD current source inverter (CSI) uses an SCR input to produce a variable voltage DC link. The inverter section also uses SCRs for switching the output to the motor. The current source inverter controls the current in the motor. The motor must be carefully matched to the VFD.
VFD Current Source Inverter
Current spikes, caused by switching, can be seen in the output. At low speeds current pulses can causes the motor to cog.
VFD Current Source Inverter Voltage/Current curve

Post a Comment:

    
Plz Calculate (3 - 6) =
(Your comment will show after approved.)

You may also like:

Featured Articles
What is VFD, How it works? - VFD ... What is VFD, How it works? - VFD working principleVFD is shorted for Variable Frequency Drive (also known as AC Drives and Inverters) -- that's used to make an AC motor working in ...
VFD: Insulated Gate Bipolar Transistor ... VFD: Insulated Gate Bipolar Transistor (IGBT)IGBT (insulated gate bipolar transistor) provides a high switching speed necessary for PWM VFD operation. IGBTs are capable of ...
Three phase inverters Three phase invertersIn the variable frequency drive rectifier paper, it explains how to go from three phase alternating current voltage to a direct ...
Variable Frequency Drive Harmonics and ... A discussion of the benefits of variable frequency drives often leads to a question regarding electrical harmonic distortion ...
Variable frequency drive Energy saving Variable frequency drive Energy savingEnergy can be saved in a VFD by reducing the losses in the electric motor or by reducing the energy consumption of the variable ...
Variable Frequency Drive Service
VFD manufacturers
Variable Frequency Drive Sales Email buy@vfds.org
Variable Frequency Drive Support Email tech@vfds.org