Present project

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

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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