ecoult energy storage - solar smoothing and shifting

Case Study: Solar Smoothing and Shifting

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PbPbO2

Lead-Acid Cell

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PbO2CarbonElectrode

Ultracapacitor

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i i1i2+ -

UltraBattery® Technology

Market Size:

$3.5B

MotiveBattery

Market Size:

$6B

StandbyBattery

New Lead-Acid Market

PSOC UltraBattery

Market Size:

$15B

StarterBattery

State of Charge

1881

0%

100%80%

20%

1960 1980 Today

The New Dimension in a Lead Acid World

State of Charge

The New Dimension in a Lead Acid World

High Efficiency in Partial State of Charge Use

UltraBattery®: highly efficient & high longevity

Lower Efficiency & higher rate of degradation

Lower Efficiency and higher rate of degradation.

20%

80%

93% – 95% DC to DC

100%

0%

Solar Smoothing & Shifting/Firming

Smoothing Continually Demonstrated

Clear Day Cloudy Day

18/04/2012 6:00:00 AM 19/04/2012 12:00:00 AM 19/04/2012 6:00:00 PM-200

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Data: 18/4-19/4/2012White – PV OutputOrange – Battery OutputGreen – Primary Meter (Site Output)

Input Signal: SW Corner Irradiance Sensor - 70% gain -200

-1000

100200300400500600

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Magnified Results for Cloudy Day

Targeting ‘Firming’ or Creation of an Energy Block

Idealized Summer ProfileTargeting Single PM Peak

Idealized Winter ProfileTargeting Dual AM/PM Peaks

Solar Energy Shifting

Net SystemOutput

PV Output

Battery Output

Shifting/Firming Using Predictive AlgorithmDate: 22/3/12

Battery Shifting Data Results from Initial Implementation

Firmed PV Production

Command interval of ~2 minutes, will go to <30 seconds (eliminates saw tooth shape)

Confirmed accuracy of PV energy prediction

Confirmed accuracy of SoC prediction

Shifting Algorithm Model Compares Very Well on Clear Days

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0:00 2:24 4:48 7:12 9:36 12:00 14:24 16:48 19:12 21:36 0:00

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Axis Title

Comparison of Modeled to Actual System Output

Algorithm System Output

Acutal Sytem Output

Comparison of Modelled to Actual System Output

2/21/12 Run Red – Actual DataBlue – Model Prediction

0:00 2:24 4:48 7:12 9:36 12:00 14:24 16:48 19:12 21:36 0:00

Algorithm SOC Actual SOC

State of Charge Comparison - Shifting Algorithm

State of Charge Comparison – Shifting Algorithm

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0:00 2:24 4:48 7:12 9:36 12:00 14:24 16:48 19:12 21:36 0:00

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Axis Title

Comparison of Modeled to Actual Battery Output

Algorithm Battery Output

Actual Battery Output

Comparison of Modelled to Actual Battery Output

Continue Test Plans

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0:00 2:24 4:48 7:12 9:36 12:00 14:24 16:48 19:12 21:36 0:00

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Axis Title

Comparison of Modeled to Actual System Output

Algorithm System Output

Acutal Sytem Output

Ecoult &

Flexible Storage Solutions

Recycling Safe

Globally SuccessfulAustralian Technology

The Energy Storage Solution of Choice

The Energy Storage Solution of Choice

www.ecoult.com

www.ultrabattery.c

om

info@ecoult.com

Case Study: Solar Smoothing and Shifting

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