Multiple Reference Frame Analysis of a Multistack Variable- Reluctance Step per Motor
description
Transcript of Multiple Reference Frame Analysis of a Multistack Variable- Reluctance Step per Motor
![Page 1: Multiple Reference Frame Analysis of a Multistack Variable- Reluctance Step per Motor](https://reader038.fdocuments.us/reader038/viewer/2022102819/56814320550346895daf88cd/html5/thumbnails/1.jpg)
ww
w.te
chnolo
gyfu
tura
e.co
m
MULTIPLE REFERENCE FRAME ANALYSIS OF A MULTISTACK
VARIABLE- RELUCTANCE STEP PER MOTOR
By Prabu.T
Edited BySarath S Nair
www.technologyfuturae.com
![Page 2: Multiple Reference Frame Analysis of a Multistack Variable- Reluctance Step per Motor](https://reader038.fdocuments.us/reader038/viewer/2022102819/56814320550346895daf88cd/html5/thumbnails/2.jpg)
ww
w.te
chnolo
gyfu
tura
e.co
m
CONTENT
Introduction Stepper motor operating principle Multistack V-R stepper motor Multiple reference frame analysis Applications Conclusion Reference
![Page 3: Multiple Reference Frame Analysis of a Multistack Variable- Reluctance Step per Motor](https://reader038.fdocuments.us/reader038/viewer/2022102819/56814320550346895daf88cd/html5/thumbnails/3.jpg)
ww
w.te
chnolo
gyfu
tura
e.co
m
INTRODUCTION:
The stepper motor is used widely in motion control systems where it is often operated in a continuous or constant speed mode rather than in a stepping mode.
A multistack variable-reluctance stepper motor is analyzed using the concept of multiple reference frames
An average-value model is developed using the concept of multiple reference frames
![Page 4: Multiple Reference Frame Analysis of a Multistack Variable- Reluctance Step per Motor](https://reader038.fdocuments.us/reader038/viewer/2022102819/56814320550346895daf88cd/html5/thumbnails/4.jpg)
ww
w.te
chnolo
gyfu
tura
e.co
m
STEPPER MOTOR OPERATING PRINCIPLE
When the winding on a certain phase is excited (energized) the rotor will rotate, seeking alignment with the excited phase winding, such that maximizing the inductance of that phase.
This position is the stable equilibrium position of rotor where the net torque is zero.
![Page 5: Multiple Reference Frame Analysis of a Multistack Variable- Reluctance Step per Motor](https://reader038.fdocuments.us/reader038/viewer/2022102819/56814320550346895daf88cd/html5/thumbnails/5.jpg)
ww
w.te
chnolo
gyfu
tura
e.co
m
![Page 6: Multiple Reference Frame Analysis of a Multistack Variable- Reluctance Step per Motor](https://reader038.fdocuments.us/reader038/viewer/2022102819/56814320550346895daf88cd/html5/thumbnails/6.jpg)
ww
w.te
chnolo
gyfu
tura
e.co
m
MULTISTACK V-R STEPPER MOTOR
Multi-stack variable-reluctance motors are widely used to give smaller step sizes. The motor is divided along its axial length into magnetically isolated sections “stacks”, and each of these sections can be excited by a separate winding..
![Page 7: Multiple Reference Frame Analysis of a Multistack Variable- Reluctance Step per Motor](https://reader038.fdocuments.us/reader038/viewer/2022102819/56814320550346895daf88cd/html5/thumbnails/7.jpg)
ww
w.te
chnolo
gyfu
tura
e.co
m
The stator of each stack consists of “N”poles and each pole has a number of teeth ”x” and carries a phase winding.
The teeth on the different stator stacks are misaligned.
The rotor stacks have number of teeth equals to stator teeth number but they are aligned
OPERATION OF MULTI STACK MOTOR
![Page 8: Multiple Reference Frame Analysis of a Multistack Variable- Reluctance Step per Motor](https://reader038.fdocuments.us/reader038/viewer/2022102819/56814320550346895daf88cd/html5/thumbnails/8.jpg)
ww
w.te
chnolo
gyfu
tura
e.co
mMULTIPLE REFERENCE FRAME ANALYSIS:
![Page 9: Multiple Reference Frame Analysis of a Multistack Variable- Reluctance Step per Motor](https://reader038.fdocuments.us/reader038/viewer/2022102819/56814320550346895daf88cd/html5/thumbnails/9.jpg)
ww
w.te
chnolo
gyfu
tura
e.co
mCONT…
![Page 10: Multiple Reference Frame Analysis of a Multistack Variable- Reluctance Step per Motor](https://reader038.fdocuments.us/reader038/viewer/2022102819/56814320550346895daf88cd/html5/thumbnails/10.jpg)
ww
w.te
chnolo
gyfu
tura
e.co
mCONT…
![Page 11: Multiple Reference Frame Analysis of a Multistack Variable- Reluctance Step per Motor](https://reader038.fdocuments.us/reader038/viewer/2022102819/56814320550346895daf88cd/html5/thumbnails/11.jpg)
ww
w.te
chnolo
gyfu
tura
e.co
mCONT…
![Page 12: Multiple Reference Frame Analysis of a Multistack Variable- Reluctance Step per Motor](https://reader038.fdocuments.us/reader038/viewer/2022102819/56814320550346895daf88cd/html5/thumbnails/12.jpg)
ww
w.te
chnolo
gyfu
tura
e.co
m
MACHINE EQUATION -2ƟR
![Page 13: Multiple Reference Frame Analysis of a Multistack Variable- Reluctance Step per Motor](https://reader038.fdocuments.us/reader038/viewer/2022102819/56814320550346895daf88cd/html5/thumbnails/13.jpg)
ww
w.te
chnolo
gyfu
tura
e.co
m
CONT..
![Page 14: Multiple Reference Frame Analysis of a Multistack Variable- Reluctance Step per Motor](https://reader038.fdocuments.us/reader038/viewer/2022102819/56814320550346895daf88cd/html5/thumbnails/14.jpg)
ww
w.te
chnolo
gyfu
tura
e.co
mCONT..
![Page 15: Multiple Reference Frame Analysis of a Multistack Variable- Reluctance Step per Motor](https://reader038.fdocuments.us/reader038/viewer/2022102819/56814320550346895daf88cd/html5/thumbnails/15.jpg)
ww
w.te
chnolo
gyfu
tura
e.co
m
MACHINE EQUATION 4ƟR
![Page 16: Multiple Reference Frame Analysis of a Multistack Variable- Reluctance Step per Motor](https://reader038.fdocuments.us/reader038/viewer/2022102819/56814320550346895daf88cd/html5/thumbnails/16.jpg)
ww
w.te
chnolo
gyfu
tura
e.co
m
CONT..
![Page 17: Multiple Reference Frame Analysis of a Multistack Variable- Reluctance Step per Motor](https://reader038.fdocuments.us/reader038/viewer/2022102819/56814320550346895daf88cd/html5/thumbnails/17.jpg)
ww
w.te
chnolo
gyfu
tura
e.co
mCONT..
![Page 18: Multiple Reference Frame Analysis of a Multistack Variable- Reluctance Step per Motor](https://reader038.fdocuments.us/reader038/viewer/2022102819/56814320550346895daf88cd/html5/thumbnails/18.jpg)
ww
w.te
chnolo
gyfu
tura
e.co
m
CONT..
![Page 19: Multiple Reference Frame Analysis of a Multistack Variable- Reluctance Step per Motor](https://reader038.fdocuments.us/reader038/viewer/2022102819/56814320550346895daf88cd/html5/thumbnails/19.jpg)
ww
w.te
chnolo
gyfu
tura
e.co
m
AVERAGE VALUE MODEL:
![Page 20: Multiple Reference Frame Analysis of a Multistack Variable- Reluctance Step per Motor](https://reader038.fdocuments.us/reader038/viewer/2022102819/56814320550346895daf88cd/html5/thumbnails/20.jpg)
ww
w.te
chnolo
gyfu
tura
e.co
mAPPLICATIONS:
Robotics CNC Machines Computer peripherals Business applications Process Control
![Page 21: Multiple Reference Frame Analysis of a Multistack Variable- Reluctance Step per Motor](https://reader038.fdocuments.us/reader038/viewer/2022102819/56814320550346895daf88cd/html5/thumbnails/21.jpg)
ww
w.te
chnolo
gyfu
tura
e.co
m
CONCLUSION:
Operation of various stepper motor is discussed.
A multistack variable-reluctance stepper motor is analyzed using the concept of multiple reference frames
The method of multiple reference frames has been Extended to provide an average-value model
This model can be used as an unique tool to aid in the design of the machine as well as in the design of the controls associated with the electronic drive system.
![Page 22: Multiple Reference Frame Analysis of a Multistack Variable- Reluctance Step per Motor](https://reader038.fdocuments.us/reader038/viewer/2022102819/56814320550346895daf88cd/html5/thumbnails/22.jpg)
ww
w.te
chnolo
gyfu
tura
e.co
m
REFERENCE:[1] P. J. Clarkson and P. P. Acarnley, "Simplified Approach to
the Dynamic Modeling of Variable- Reluctance Stepping Motors," IEE Proc., Vol. 136,PartB, No. 1, January 1989, pp. 1-10.
[2] S. D. Sudhoff, “Member Multiple Reference Frame Analysis of a Multistack Variable- Reluctance Stepper Motor” IEEE Transactions on Energy Conversion, Vol. 8, No. 3, September 1993
[3] S. D. Sudhoff and P. C. Krause, "Analysis of Steady-State Operation of a Multistack Variable-Reluctance Stepper Motor Using qdO Variables," accepted for IEEE Transactions on Energy Conversion.
![Page 23: Multiple Reference Frame Analysis of a Multistack Variable- Reluctance Step per Motor](https://reader038.fdocuments.us/reader038/viewer/2022102819/56814320550346895daf88cd/html5/thumbnails/23.jpg)
Log On to www.technologyfuturae.com
Technology Futurae
Technical Presentations, Research Reviews, New designs & Developments
![Page 24: Multiple Reference Frame Analysis of a Multistack Variable- Reluctance Step per Motor](https://reader038.fdocuments.us/reader038/viewer/2022102819/56814320550346895daf88cd/html5/thumbnails/24.jpg)
ww
w.te
chnolo
gyfu
tura
e.co
m
THANK YOU