What is vector control in VFD?
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.
What is scalar and vector control in VFD?
A scalar is a quantity that has only magnitude, such as mass or temperature. A vector is a quantity that has both magnitude and direction, such as acceleration or force. In a VFD, AC power is converted to DC through the rectifier. The rectified power is then filtered and stored in the DC bus (link).
How do you control a VFD?
A VFD drive controls the motor speed. The VFD can be controlled remotely by using PLC/DCS systems. The PLC has to give set point for VFD drive to control the motor speed, this can achieved either automatically from the PLC or by the operator action from the HMI.
What is vector control method?
Vector control is any method to limit or eradicate the mammals, birds, insects or other arthropods (here collectively called “vectors”) which transmit disease pathogens. The most frequent type of vector control is mosquito control using a variety of strategies.
How do you control a vector?
Insecticides, larvicides, rodenticides, Lethal ovitraps and repellents can be used to control vectors. For example, larvicides can be used in mosquito breeding zones; insecticides can be applied to house walls or bed nets, and use of personal repellents can reduce incidence of insect bites and thus infection.
What is scalar and vector control?
Scalar control is a relatively simple method. The purpose of the technique is to control the magnitude of the chosen control quantities. The vector control technique works with vector quantities, controlling the desired values by using space phasors which contain all the three phase quantities in one phasor.
What is meant by vector control?
What is V F control?
V/F is abbreviated from voltage/frequency. V/F control is an induction motor control method which ensures the output voltage proportional with the frequency, so it maintains a constant motor flux, preventing weak magnetic and magnetic saturation phenomenon from happening.
What is vector control methods?
Methods of vector control include the elimination or management of larval habitats, larviciding with insecticides, the use of biological agents and the application of adulticides.