I handled the webinar Titled Basics of Vector Control in AC Machine on 16th June 2020. 68 participants have attended. Webinar starts at 11 am and ends at 12.30 pm successfully

1. DR RAJIN M. LINUS
Webinar
ON 16TH JUNE 2020 @ 11 AM
Basics of Vector Control in AC Machines
Associate Professor & HOD
Electrical Engineering Department,
Sanjay Ghodawat University,
Kolhapur , Maharashtra , India

2. Motivation for Selecting This Topic
 Around 200 to 400 publication between 2017 – 2019
Most of the researchers – Feeling Tough
 Easy to understand and easy to implement in MATLAB Simulation Environment
Start new researchers in this field
In different research group – Many Doubts in basics
Hardware implementation is also possible using some DSP Processors
16th June 2020 @ 11 am BASICS OF VECTOR CONTROL FOR AC MACHINES BY DR RAJIN M. LINUS, SGU, KOLHAPUR- WEBINAR 2

3. Why we need Vector Control
16th June 2020 @ 11 am BASICS OF VECTOR CONTROL FOR AC MACHINES BY DR RAJIN M. LINUS, SGU, KOLHAPUR- WEBINAR 3
PID
Controller
Reference
Feedback
+
- RV
 FV
5RV
3FV
Steady State Error can be Zero
using PID Controller
tSinVR 3145
tSinVF 3143
Steady State Error may not be
zero using PID Controller
Scalar Control - Sluggish Response (Torque & Flux are the function of V, f and current)
Scalar Control- Sluggish Response in VSC & CSC Control (Coupling effect in Machine)
PID Controllers in AC Machine – Steady State Error will not be zero.
Scalar Control - Good Steady State Response & Poor dynamic response
(Deviation in flux linkage in phase & Magnitude)

4. Flux Linkages in Three Phase System
16th June 2020 @ 11 am BASICS OF VECTOR CONTROL FOR AC MACHINES BY DR RAJIN M. LINUS, SGU, KOLHAPUR- WEBINAR 4
R
Y
B

F
Y
B
120
120
120
 )240()120()(   CosiCosiCosiNF BYRRYB
Flux Linkages






















  SiniiiCosiiiNF CYRCYRRYB
2
3
2
3
0
2
1
2
1
   SiniCosiNF RYB 

F
iNRYB
iNRYB
i i

5. Finding Number of Turns in Two Phase
F







































B
Y
R
RYB
i
i
i
kkk
N
i
i
i
N
2
3
2
3
0
2
1
2
1
1
0
0 





M


















k
k
k
M
2
1
2
3
2
1
2
1
2
3
2
1
2
1
01
3
21
2
1
2
1
 k
k
k



















2
1
2
1
2
1
2
3
2
3
0
2
1
2
1
1
M
T
MM
3
21
 
16th June 2020 @ 11 am BASICS OF VECTOR CONTROL FOR AC MACHINES BY DR RAJIN M. LINUS, SGU, KOLHAPUR- WEBINAR 5

6. Finding Number of Turns in Two Phase Contd…
32
00 RYB
T
RYB
T
VIVI

W.K.T. RYBRYBMININ 00  RYB
RYB
MI
N
N
I
0
0

 
……………………..(1)
………...(2)
3
2
9
4
0
0
0










αβ
RYB
RYB
RYBαβ
RYB
N
N
MV
N
N
M
N
N 
16th June 2020 @ 11 am BASICS OF VECTOR CONTROL FOR AC MACHINES BY DR RAJIN M. LINUS, SGU, KOLHAPUR- WEBINAR 6
Assumption: Per phase power is same
…...................(3)

7. Equations in Two Phase Conversion
US



……………………..(3)


































B
Y
R
v
v
v
v
v
v
2/12/12/1
2/32/30
2/12/11
3
2
0


……………………..(4)
Uα
Uβ
 jVVVS 
16th June 2020 @ 11 am BASICS OF VECTOR CONTROL FOR AC MACHINES BY DR RAJIN M. LINUS, SGU, KOLHAPUR- WEBINAR 7

































c
b
a
i
i
i
i
i
i
2/12/12/1
2/32/30
2/12/11
3
2
0


 jIIIS 
Voltage Equation
Current Equation

8. Reality of Three Phase to Two Phase Conversion
(RYB)



16th June 2020 @ 11 am BASICS OF VECTOR CONTROL FOR AC MACHINES BY DR RAJIN M. LINUS, SGU, KOLHAPUR- WEBINAR 8

F
R
Y
B
Supply Frequency Supply Frequency
Simulink Visualization

9. Reality of Three Phase to Two Phase Conversion
(RBY)



16th June 2020 @ 11 am BASICS OF VECTOR CONTROL FOR AC MACHINES BY DR RAJIN M. LINUS, SGU, KOLHAPUR- WEBINAR 9

F
R
B
Y
Supply Frequency
Supply Frequency
Simulink Visualization

10. For PF of 0.8 in Current Wave form


16th June 2020 @ 11 am BASICS OF VECTOR CONTROL FOR AC MACHINES BY DR RAJIN M. LINUS, SGU, KOLHAPUR- WEBINAR 10
 
 
F
R
Y
B

Supply Frequency Supply Frequency Simulink Visualization

11. Power in αβ Reference Frame
*
00 
IVS  ……………………..(5)
……………..……....(6)
16th June 2020 @ 11 am BASICS OF VECTOR CONTROL FOR AC MACHINES BY DR RAJIN M. LINUS, SGU, KOLHAPUR- WEBINAR 11
Apparent Power (S)
….....................(7)
 
ivivp 
 
ivivq 
Instantaneous Real Power (p)
Instantaneous Reactive Power (q)

jVVV 0

jVII 
*
0

12. Discussion and Clarification -1
16th June 2020 @ 11 am BASICS OF VECTOR CONTROL FOR AC MACHINES BY DR RAJIN M. LINUS, SGU, KOLHAPUR- WEBINAR 12
Discussion and Doubt in RYB to αβ Conversion (2 Minutes)
1. Send the doubts in chat box with your name. I will clarify it
2. For clarification and further discussion, I may call the name so that the
respective professional can unmute and speak.
(It will avoid the echo issues, interference and noise)
Instruction

13. Summary of Three Phase to αβ Conversion
16th June 2020 @ 11 am BASICS OF VECTOR CONTROL FOR AC MACHINES BY DR RAJIN M. LINUS, SGU, KOLHAPUR- WEBINAR 13
1. RYB sequence – β Axis Lead
2. RBY sequence –β Axis Lag
3. When variables in RYB /RBY lag, the respective αβ axis will lag based
on Power Factor

14. Concept in DQ Reference Frame
16th June 2020 @ 11 am BASICS OF VECTOR CONTROL FOR AC MACHINES BY DR RAJIN M. LINUS, SGU, KOLHAPUR- WEBINAR 14


You
Here
Radius of 1 Unit
0
1
0
-1 0 90 180 270 360 = 0
1
0




U
U
Supply Frequency
90
0
1




U
U
1
0




U
U
0
1




U
U
1
0




U
U
0
1




U
U
Supply Frequency
Simulink Visualization

15. Concept in DQ Reference Frame Contd…
16th June 2020 @ 11 am BASICS OF VECTOR CONTROL FOR AC MACHINES BY DR RAJIN M. LINUS, SGU, KOLHAPUR- WEBINAR 15
0 90 180 270 360 = 0
1
0




U
U
Supply Frequency
90
0
1




U
U
1
0




U
U
0
1




U
U
1
0




U
U
0
1




U
U
Like to See always
0 90 180 270 360 = 0
1
0




U
U
Supply Frequency
90
1
0




U
U
1
0




U
U
1
0




U
U
1
0




U
U
1
0




U
U
Running the speed of Supply frequency


Run
Start
Radius of 1 Unit
0
1
Supply
Frequency
Supply
Frequency

16. Concept in DQ Reference Frame Contd…
16th June 2020 @ 11 am BASICS OF VECTOR CONTROL FOR AC MACHINES BY DR RAJIN M. LINUS, SGU, KOLHAPUR- WEBINAR 16
Mathematical Analysis




d
q
tCosVV Sm  
tSinVV Sm  
  SinVCosVVd 
  CosVSinVVq 
   tCosVV Smd
   tSinVV Smq


d
q

dq
tS

Speed
Speed
md VV 
0qV
tS 

17. Reality of αβ to DQ Reference Frame (RYB)



16th June 2020 @ 11 am BASICS OF VECTOR CONTROL FOR AC MACHINES BY DR RAJIN M. LINUS, SGU, KOLHAPUR- WEBINAR 17

F
R
Y
B
1 q
0 d
Supply
Frequency Supply
Frequency

18. Reality of αβ to DQ Reference Frame (RYB) Contd..
16th June 2020 @ 11 am BASICS OF VECTOR CONTROL FOR AC MACHINES BY DR RAJIN M. LINUS, SGU, KOLHAPUR- WEBINAR 18
Simulink Visualization

19. Reality of αβ to DQ Reference Frame (RBY)



16th June 2020 @ 11 am BASICS OF VECTOR CONTROL FOR AC MACHINES BY DR RAJIN M. LINUS, SGU, KOLHAPUR- WEBINAR 19

F
R
B
Y
1 q
0 d
Supply
Frequency Supply
Frequency

20. Reality of αβ to DQ Reference Frame (RBY) Contd..
16th June 2020 @ 11 am BASICS OF VECTOR CONTROL FOR AC MACHINES BY DR RAJIN M. LINUS, SGU, KOLHAPUR- WEBINAR 20
Simulink Visualization

21. Power in DQ Reference Frame
*
00 dqIVS dq
 ……………………..(8)
……………..……....(9)
16th June 2020 @ 11 am BASICS OF VECTOR CONTROL FOR AC MACHINES BY DR RAJIN M. LINUS, SGU, KOLHAPUR- WEBINAR 21
Apparent Power (S)
….....................(10)
qqdd ivivp 
qd ivivq dq

Instantaneous Real Power (p)
Instantaneous Reactive Power (q)
In Synchronous Reference frame
md VV 
0qV
Instantaneous Real Power (p)
ddivp 
qivq d

Instantaneous Reactive Power (q)
Independent control of p, q are possible
Application: Grid Integration of Renewable Energy System
qjVVV ddq
0
qjVII ddq

*
0

22. Discussion and Clarification -2
16th June 2020 @ 11 am BASICS OF VECTOR CONTROL FOR AC MACHINES BY DR RAJIN M. LINUS, SGU, KOLHAPUR- WEBINAR 22
Discussion and Doubt in αβ to DQ Conversion (2 Minutes)
1. Send the doubts in chat box with your name. I will clarify it
2. For clarification and further discussion, I may call the name so that the
respective professional can unmute and speak.
(It will avoid the echo issues, interference and noise)
Instruction

23. Different Reference Frame
16th June 2020 @ 11 am 23
1. Stationary Reference Frame
2. Arbitrary Reference Frame
3. Synchronous Reference Frame
4. Rotor Reference Frame

24. Stationary Reference Frame
16th June 2020 @ 11 am 24
S
S
R
R
R
R
You
Here
Stationary Reference Frame
tCosVV SmS  
tSinVV SmS  
)( RSmR tSinVV  
)( RSmS tCosVV  
tCosVV SmSS 

tSinVV SmSS  
)( RSmRS tSinVV  
)( RSmRS tCosVV 

Application
DC Machine

25. Arbitrary Reference Frame
16th June 2020 @ 11 am 25
S
S
R
R
R
R Xd
Xq tCosVV SmS  
tSinVV SmS  
)( RSmR tSinVV  
)( RSmR tCosVV  
)( XSmdSX tCosVV  
X
X
)( XSmqSX tSinVV  
)( XRmdRX CosVV  
)( XRmqRX SinVV  
In Arbitrary Reference Frame






 XX
XX
CosSin
SinCos


Conversion Matrix
Supply
Frequency

26. Synchronous Reference Frame
16th June 2020 @ 11 am BASICS OF VECTOR CONTROL FOR AC MACHINES BY DR RAJIN M. LINUS, SGU, KOLHAPUR- WEBINAR 26
S
S
R
R
R
R
Frame
Rotating in
Synchronous
Speed
S
Rd
Rq
R
R
S
Sd
Sq
)( XSmdSX tCosVV  
)( XSmqSX tSinVV  
)( RXmdRX CosVV  
)( RXmqRX SinVV  
In Arbitrary Reference Frame
tSSX  
mSSmdSS VtCosVV  )( 
0)(  SSmqSS tSinVV 
)( RSmdRS CosVV  
)( RSmqRS SinVV  
Application
Squirrel Cage Induction Motor
Slip Ring Induction Motor (Stator Side Control)
Supply
Frequency

27. Rotor Reference Frame
16th June 2020 @ 11 am BASICS OF VECTOR CONTROL FOR AC MACHINES BY DR RAJIN M. LINUS, SGU, KOLHAPUR- WEBINAR 27
S
S
R
R
R
R
Frame
Rotating in
Rotor Speed
Sd
Rd
Rq
R
R
Sq
)( XSmdSX tCosVV  
)( XSmqSX tSinVV  
)( RXmdRX CosVV  
)( RXmqRX SinVV  
In Arbitrary Reference Frame
tRRX  
)( RSmdSR tCosVV  
)( RSmqSR tSinVV  
mRRmdRR VCosVV  )( 
0)(  RRmqRR SinVV 
Application
R
R
Slip Ring Induction Motor (Rotor Side Control)
Supply
Frequency

28. Synchronous Reference Frame (Rotor Syn. Speed)
16th June 2020 @ 11 am BASICS OF VECTOR CONTROL FOR AC MACHINES BY DR RAJIN M. LINUS, SGU, KOLHAPUR- WEBINAR 28
S
S
R
R
R
R
Frame
Rotating in
Synchronous
Speed
S
Rd
Rq S
Sd
Sq
)( XSmdSX tCosVV  
)( XSmqSX tSinVV  
)( RXmdRX CosVV  
)( RXmqRX SinVV  
In Arbitrary Reference Frame
tSSX  
mSSmdSS VtCosVV  )( 
0)(  SSmqSS tSinVV 
mRSmdRS VCosVV  )( 
0)(  RSmqRS SinVV 
Application
Synchronous Motor/ PMSM Motor
tSSR  

29. Final Discussion and Clarification
16th June 2020 @ 11 am BASICS OF VECTOR CONTROL FOR AC MACHINES BY DR RAJIN M. LINUS, SGU, KOLHAPUR- WEBINAR 29
Final Doubt and Discussion are Called
1. Send the doubts in chat box with your name. I will clarify it
2. For clarification and further discussion, I may call the name so that the
respective professional can unmute and speak.
(It will avoid the echo issues, interference and noise)
Instruction

30. Feedback From Participants
Kindly Introduce Yourself first and provide your feedback for
Betterment
16th June 2020 @ 11 am BASICS OF VECTOR CONTROL FOR AC MACHINES BY DR RAJIN M. LINUS, SGU, KOLHAPUR- WEBINAR 30

31. Thank You for Your Patience
Thank You
16th June 2020 @ 11 am BASICS OF VECTOR CONTROL FOR AC MACHINES BY DR RAJIN M. LINUS, SGU, KOLHAPUR- WEBINAR 31
1. All Faculties from Various Places
2. All Research Scholars and PG/UG Students from Various Places
3. Industrialist in different Region
4. Prof. Mr Anand Kumbhar , Electrical Department, SGU (Coordinator)
5. My Other Team Members of Electrical Department, Sanjay Ghodawat
University (SGU)
6. Honorable Vice Chancellor, Respected Registrar, Dean of Academics and
Director
7. Other Well-wishers
Dr Rajin M. Linus
Associate Professor & HOD
Electrical Engineering Department,
Sanjay Ghodawat University,
Kolhapur , Maharashtra , India
Contact:
rajin.linus@sanjayghodawatuniversity.ac.in
rajinmlinusped@yahoo.com.
Mobile: 8072737249/9488078881