Variable Frequency Drive (VFD) Course Outlines:
1- Speed Control Methods Used in Induction Motors.
2- Why VFD is Used in Induction Motor.
3- How VFD Works.
4- VFD Control Methods.
5- Installation & VFD Sizing.
6- Parametrs.
7- VFD Configuration.
Who Can Join This Course:
1- Electrical Engineers.
2- Electrical Technicians.
3- Engineers work in Industry Field.
4- Automation Engineers.
5- Fresh Graduated Engineers.
Course contents:
Section (1)
Introduction 1
1-Induction motor type
2-How to change the speed of the motor
Introduction 2
1-Most common terminologies of AC drive
2- Why use VFD for induction
Main circuit (5)
1-Heavy transformation of power
2-Input diode (input converter)
Main circuit (6)
1-DC bus
2-filter circuit
3- Dc bus voltage
4-Breaking unit
Main circuit (7)
1-Output inverter section
2-PWM
Main circuit (8)
1-Time on /of
2-Carrier frequency
Section (2)
Installation (1)
1-Power terminal
2-Control terminal
3-EMC stander
Installation (2)
1-Model explanation
2-AC power supply
3-Motor connection
4-Motor VFD connection
5-Parmeters
Installation (3)
1-Keybad
2-The analog signal input
3-The digital signal input
4- The analog signal output
5-Multi function relay
Installation (4)
1-Veriable restores (potentiometer)
2-Frequencay setting method
3-The PNP /NPN mode
4- Source of operation command
5-2wire 3wire operation control
Installation (5)
1-Multi step speed
2-Multi function output relay
3-Jog operation
Section (3)
Control method (1)
1-VFD control method
2-v/f method
3-Change voltage by pwm
4-Change frequency
Control method (2)
1-Speed torque curve in induction motor
2-Speed torque in VFD
3-Starting torque at low speed
4-Flux vector control
5-Auto tuning
Section(4)
Brake
1-Brake method in VFD
2-Ramp and cost braking in VFD
3-Accel. Decel time method
4-Dynamic brake
5-External brake restores sizing
6-Regenerative brake
7-Sharing dc bus
8-DC brake
Section (5)
Trouble shooting (1)
1-How troubleshoot VFD
Trouble shooting (2)
1-Faults
2-IGBT test