2. Presentation
Study of a regenerative elevator drive for
reducing an electrical energy loss
Advisor
Aj.Yutana Chongjareang
By
Mr. Suntisuk Siripan 540107010011
Faculty of Electrical Engineering
Dhurakij Pundit University in 2014

4. Introduction #1
1

5. Introduction #2
2

6. Introduction #3
3

7. Introduction #4
4

8. Introduction #5
5

9. 6
Objective
1. Study the theory of Regenerative system for
reducing loss energy from elevators.
2. Study voltage regulation system and stability
from regenerative system in elevator to DC-link.

10. 7
Scope
Simulation behavior of regenerative circuit
by Matlab/Simulink for study Regenerative system
and analysis the effect that occur in DC-link

11. 8
Plan#1
Tasks Aug Sep Oct Nov Dec Jan Feb Mar Apr
1. Project
proposal
2.Study and compose
background and
significance
- Evolution of elevator
- Effect from
regenerative to DC-link
- Regenerative system

12. 9
Plan#2
Tasks Aug Sep Oct Nov Dec Jan Feb Mar Apr
3.Install Matlab
program
4.Study and compose
the theories
4.1 DC-link and Filter
4.2 DC/AC Inverter
4.3 Field-oriented
control
4.4 Induction motor

13. 10
Plan#3
Tasks Aug Sep Oct Nov Dec Jan Feb Mar Apr
4.1 DC-link and Filter
- Effect from
regeneration
- Stabilization from
regeneration
- Principles and
behavior of DC-link
when motor is
regenerating
4.2 DC/AC Inverter
- Principles and
behavior of invertor
when motor is
regenerating

14. 11
Plan#4
Tasks Aug Sep Oct Nov Dec Jan Feb Mar Apr
4.4 induction motor
squirrel cage
- regenerative braking
- Principles and behavior of
invertor when motor is
regenerating
5. Study other
research is related
about regenerative

15. 12
Plan#5
Tasks Aug Sep Oct Nov Dec Jan Feb Mar Apr
6. Matlab/Simulink
- How to use?
- Simulation#1
- Prove
- Simulation#2
- Report
7.Presentation
schedule of project 1
- Introduction
- Complete
- Development
guildeline
- Final

16. Implicated Theories#1
Efficiency Optimized Control of Elevator Drive
By
Branko Blanuša Faculty of Electrical Engineering
Bojan Knežević Faculty of Mechanical Engineering
University in Banja Luka
INFOTEH-JAHORINA Vol. 11, March 2012
13

17. Implicated Theories#2
14

18. Implicated Theories#3
15
Power loss model
Ptot = Pmoter + P푖푛푣
Ptot = (Pco푝푝푒푟 + P푐표푟푒 ) + P푖푛푡
Pinv = Rinv( i2 푑
+ i2)
푞

19. Implicated Theories#4
16

20. Implicated Theories#5
17

22. Time line #1
18

23. Time line #2
19

24. Time line #3
20

25. Time line #4
21

26. Time line #5
22

27. Time line #6
23

28. Time line #7
24

29. Regenerative braking
25
#1(Part 4.4)
Pin=3VIscosφs

30. Regenerative braking
25
#2
2 + 2 = 180

31. Regenerative braking
26
#3
high inertia
sudden decrease torque

32. Regenerative braking
27
#4

33. Effect of DC-link from
28
Regenerative

34. How can the regenerative
energy be predicted for an
application?#1
If (HPregen/HPdrive) <= 0.1
then external measures or equipmentar not required
to handle the regenerative energy.
If calculations show a need to apply.Then, calculations
29

35. How can the regenerative
energy be predicted for an
application?#2
30

36. How can the regenerative
energy be predicted for an
application?#3
31

37. How can the regenerative
energy be predicted for an
application?#4
32

38. How can the regenerative
energy be predicted for an
application?#5
33

40. reference
• Branko Blanusa, Bojan Knezevic University of Banja Luka “Efficiency
Optimized Control of Elevator Drive” INFOTEH-JAHORINA Vol. 11, March
2012.
• Rockwell Automation , Braking and Regenerative Energy with AC drives,
Feb 1999
• E4, ENERGY EFFICIENT ELEVATORS AND ESCALATORS, March 2010
• Stephen J. Chapman , Electric Machinery fundamentals,4 edition
• Donald Vollrath, Magnetek, Regenerative Elevator Drives, Elevator
world,June2010