2 Day`s Training program on Variable Frequency
Drives (VFD)
(3rd-4th
December 2012 at Ahmedabad, Gujrat)
Training Program
Objective and Description:
The
objective of this program is to provide the participants with information
needed to troubleshoot, diagnose, and repair problems commonly found in
Electrical Drives beside thoroughly understand the concept of Electrical
Drives. Practical hands-on exercises will reinforce material presented in the
training sessions. This program will impart information important to proper
motor selection, operation and Maintenance, Troubleshooting in detail.
Learning
Outcomes:
Upon completion of this course,
the participant should be able to:
·
Understand
characteristics of AC/DC motors which drive control.
·
Know the components
and types of variable frequency drives.
·
Understand common
AC/DC drive applications
and how to evaluate them.
·
Understand the
advantages and benefits of using variable frequency drives.
·
Setting of various Drives Parameters &
communication.
·
Understand how to
troubleshoot AC drive applications.
Who Should Attend?
All practicing Engineers, DET,GET, O&M
professionals; others who willing to get knowledge regarding VFD/AFD.
Program Contents:
1.
Overview of Electrical
Drives. Objective of the Program.
2.
Review of Basics of Electrical Engineering.
a.
Fundamental of Voltage, Current, Power & Impedance.
b.
Resistance, Inductance & Capacitance.
c. R, L & C, Behavior & Applications
3.
Concepts of AC /DC machines: Construction, Working,
Characteristics.
a.
Induction Motor: Starting, Speed Control & Torque
b.
DC Motor
c.
Hot & Cold starting etc.
4.
Basics of various loads and Applications.
5.
Torque, Speed and Power. Review and understanding.
6.
Basics of Power
Electronics.
a.
Review of semiconductor Theory
b.
Controlled and Uncontrolled Switches: Power Diode, Power BJT
c.
MOSFET, IGBT, SCR & GTO: ON & OFF strategies.
d.
Rating and Selection of Devices: dI/dt; dV/dt; I2t
rating.
e.
R-C Snubber Circuit: Design & various strategies
f.
Breakdown, Failure & Testing of various Devices
g.
Switching Action and characteristics
h.
Losses in Switching & need of cooling.
i.
Effect of Frequency
j.
Comparison of various Devices.
k.
DC Link capacitor: Selection and rating.
7.
AC to DC Rectification
action.
a.
Half, Semi & Full wave controlled and uncontrolled
rectification.
b.
Variation with R, R-L, R-L-E load.
c.
About filter application and ripples.
d.
Voltage, current & Power: Equation and waveforms
e.
Average & RMS values, Distortion factor, Power factor &
Harmonics
f.
Function of freewheeling diode.
g.
Effect of source Inductance Ls.
h. Applications
8.
DC to AC Inverter
a.
Inverter function
b.
Series and parallel Inverter.
c.
Importance of L & C.
d.
Inverter with R-L-C-E Load.
e.
1200 & 1800 Mode of operation.
f.
PWM & SPWM control Strategy.
g.
Current Sourced Inverter.
h.
Frequency control and Phase sequence operation.
i.
Selective Harmonic Elimination.
j.
Voltage, current & Power Relation, DF, PF, Average and RMS
values.
k.
12 & 18 pulse conversion & its applications.
9.
Dual Converter and Cycloconverter
a.
Four Quadrant Operation
b.
Operating modes of Dual Converter
c.
Circulating and Non circulating current mode operation.
d.
Commutation Failure
e.
Effect of Load power factor
f.
Single phase to Single phase Cycloconverter
g.
Three phase to single phase Cycloconverter
h.
Operation behavior & Application.
10.
Electrical drives
(AC/DC)
a.
Basics and review of Drives: Advantages and various parts.
b.
Requirement of four quadrant operation of Drives.
c.
Open and Closed loop control strategies.
i.
Current Limit Control
ii.
Speed and torque Control
d.
DC Drives
i.
Requirement of DC Drive
ii.
Starting, Braking & speed Control.
iii.
Armature Voltage Control
iv.
Ward Leonard Drives
v.
Single phase & Three phase Rectifier Control
vi.
Multiquadrant Operation
vii.
Chopper Controlled Drives
viii.
Dual Converter Controlled Drive
e.
Induction Motor Drive
i.
Basics and review of three Phase Induction Motor
ii.
Starting, Braking and Speed control Operation
iii.
Stator voltage Control
iv.
Variable frequency control
v.
Voltage Source Inverter Control
vi.
Cycloconverter Controlled AC Drives.
vii.
CSI Controlled AC Drives
viii.
Eddy Current drives
ix.
Rotor Resistance Control
x.
V/f control
xi.
Direct torque Control
xii.
Vector Control
xiii.
Flux Control methods.
xiv.
Smart Drives & Energy efficient drives.
xv.
Soft Starting: ZCS & ZVS
xvi.
Design of control Strategies: Various Comparator Circuits
xvii.
Various Sensing strategies & Circuits: Sensors, CT, PT etc.
xviii.
Concept of Group & Multi motor drive Applications.
xix.
Concept of Load Sharing: Criteria
xx.
Drive parameters: definitions and parameter setting.
1.
Setting of Motor parameters; set points & parameters.
2.
Setting of acceleration and deceleration parameter.
3.
Inching & Jogging.
4.
PLC controlled Drives
5.
Communication and Interfacing.
6.
Parameter copying & storage; Industry setting.
11.
Installation and commissioning of Electrical Drives.
12.
Common problems in Electrical Drives and Troubleshooting
a.
Reflected wave phenomenon.
b.
Surges and Transients.
13.
Testing of Drives using various meters.
14.
Maintenance of Electrical Drives.
15.
Protection of Electrical Drives.
a.
Solid State Fuse & Relay
b.
Protection Strategies.
c.
Effect on Motor Bearing
d.
Harmonic & Its Effects
16.
Harmonic Elimination Techniques
17.
Various Other drives
a.
Stalled Torque Drives
b.
Stepper and Servo motor Drives
c.
Switched Reluctance motor Drive
d.
Synchronous Motor Drive
e.
PM & brushless motor drive
18.
Understanding of various drives: Product Specific as required.
19.
Case Studies.
20.
Discussion on practical
problems.
Expert Profile: Vikas Wadnerkar
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23 November 2012
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Education
B.E.(Power Electronics), Nagpur University,
1997
M.E.(Power Electronics & Drives), SGSITS,
Indore, 2001
Professional Experience
Over 15 Years
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Mr. Vikas Wadnerkar has done his graduation in Power Electronics
Engineering (Electrical Engineering), Post graduation in Electrical
Engineering (Power Electronics and Electrical Drives specialization) from
premium institutions in India. All academic qualifications were passed with
first division. He is a Lead auditor for OHSAS 18001.
Being a Technical expert in
Electrical Engineering, during his professional career spanning of 15 years,
Mr. Vikas Wadnerkar has worked extensively in the areas of Training and
Development with Steel/ Power/ Aluminium and Cement industries.
He was associated with some reputed
organizations like Essar Steel Limited, Vedanta Aluminium Limited and Torrent
Power, Abhijeet Group, L & T etc. He also attended various Training
programs and product specific Trainings to get expertise.
Mr. Vikas Wadnerkar has worked as a faculty
of expertise in Electrical Engineering area with specialization in Power
Electronics, Electrical Drives, Transformer, Electrical motors and
Protection. He already trained more than 600 corporate employees for Courses
in electrical Engineering such as Electrical Drives, Power Electronics,
Switchgear protection and System, Operation and maintenance of Transformer
& Motor, Earthing and Relays. He also delivered professional training in
Electrical safety & some behavioral trainings related to Soft Skill and
Attitude.
He delivered various Training programs to many companies
few of them are Essar Steel, Ultratech Cement, Vedanta Aluminium, KSK Energy,
Siemens, Aditya Birla, L&T etc. Beside this delivered trainings for
employees of Lafarge Cement, Utttam Galva, LLOYDS Steel, Abhijeet Group,
Vidarbha Power, L & T etc.
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Schedule & Venue
3rd-4th
December, 10 AM to 6 PM
MICA, Mudra Institute of communication., Shela Village, Sanad Road,
Ahmedabad.
Participation
fees:
· Rs. 6000/- per
delegate (Training program will include breakfast, lunch and tea arrangements
along with training material hard/soft copies.)
·
12.36% Service
tax extra
· 10% group
discount can be availed for more than 3 delegates from the same group /
Organization/company.
Venue: Ahmedabad, Gujrat India.
For Registration, please contact
undersigned,
Contact:
Madhuri, Ahmedabad
VFD works on PWM (Pulse width Modulation) technology thus injecting non-linear current harmonics in the system. This will result in electrical stresses on the motor as well as voltage harmonic distortion at supply end. It will also result in lowering of Power Factor.
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