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Presentation
Study of a regenerative elevator drive for reducing an electrical energy loss
AdvisorAj.Yutana Chongjareang
By
Mr. Suntisuk Siripan 540107010011
Faculty of Electrical EngineeringDhurakij Pundit University in 2014
1
Introduction #1
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Introduction #2
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Introduction #3
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Introduction #4
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Introduction #5
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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.
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Scope
Simulation behavior of regenerative circuit
by Matlab/Simulink for study Regenerative systemand analysis the effect that occur in DC-link
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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
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Plan#2
Tasks Aug Sep Oct Nov Dec Jan Feb Mar Apr
3.Install Matlabprogram
4.Study and compose the theories4.1 DC-link and Filter4.2 DC/AC Inverter4.3 Field-oriented control4.4 Induction motor
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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
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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
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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- Developmentguildeline- Final
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Implicated Theories#1
Efficiency Optimized Control of Elevator Drive
By
Branko Blanuša Faculty of Electrical EngineeringBojan Knežević Faculty of Mechanical Engineering
University in Banja Luka
INFOTEH-JAHORINA Vol. 11, March 2012
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Implicated Theories#2
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Implicated Theories#3
Power loss model
Ptot = Pmoter + P𝑖𝑛𝑣
Ptot = (Pco𝑝𝑝𝑒𝑟 + P𝑐𝑜𝑟𝑒) + P𝑖𝑛𝑡
Pinv = Rinv( i𝑑2 + i𝑞
2)
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Implicated Theories#4
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Implicated Theories#5
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Time line #1
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Time line #2
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Time line #3
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Time line #4
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Time line #5
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Time line #6
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Time line #7
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Regenerative braking #1(Part 4.4)
Pin=3VIscosφs
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Regenerative braking #2
2 + 2 = 180
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Regenerative braking #3
high inertia
sudden decrease torque
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Regenerative braking #4
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Effect of DC-link from Regenerative
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How can the regenerative energy be predicted for an
application?#1
If (HPregen/HPdrive) <= 0.1then external measures or equipmentar not required to handle the regenerative energy.
If calculations show a need to apply.Then, calculations
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How can the regenerative energy be predicted for an
application?#2
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How can the regenerative energy be predicted for an
application?#3
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How can the regenerative energy be predicted for an
application?#4
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How can the regenerative energy be predicted for an
application?#5
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
