photovoltaic presentation (jakarta)

Sunergy Solar Pte Ltd(http://www.sunergysolar.com.sg)

Established since 2005

Trade : Silicon (Wafers and ingots), Solar Cells and Full System Solution

Full System Solution: Design, Configuration of Off-grid and Grid Tie System

BCA : SY05 L5 (2014)

Prepared by : Soh Guan LeeContact :

+65 9475 9803 (Mobile)+65 6515 4780 (Office)

1PROPERTY OF SUNERGY SOLAR PTE LTDTuesday, May 2, 2023

http://www.sunergysolar.com.sg/

Content

1. How Photovoltaic Works2. Photovoltaic Cells and Modules3. Pre-Implementation4. Off Grid System5. Case Study


How Photovoltaic Works



When light shines on the cell, electrons are pushed out from the cell, producing direct current electricity.

Thin N-type layer

Thick P-type layer

e–

+ + + + + + + +

– – – – – – – –

P/N Junction regionof electric field


Connect Cells To Make Modules

• One Silicon Solar Cell produces about 0.5 volts

• 36 Cells connected together produce enough voltage to charge 12 volts battery

• 50 – 60 cells modules are common for grid connected systems operating at about 25 - 40 volts each

• Module is the basic building block of systems

• Can connect modules together to get any power configuration (Limited by voltage)

Solar Cells and Modules currently available in the market:

1. Mono and Poly Crystalline (more than 15% Eff)

2. SunPower/Panasonic HIT®/Ben Q Cell (more than 19% Eff)

3. Thin Film and CIGS (Eff between 8-12%)


Mono Crystalline Cells

Poly Crystalline Cells

Able to attain higher efficiency cells compared to Poly and Thin Film.

Appearance of surface is dark and uniform

Highest Module Efficiency in the market at close to 16%

Slightly less efficient compared to Mono Crystalline but higher than Thin Film

Appearance may have inconsistent color

Highest Module Efficiency in the market at 15+%

*Silicon cells are sensitive to heat and temperature.

Types of Solar Cells


Panasonic HIT® Cell

SunPower / Ben Q Solar Cell

*Combination of Thin Film and Silicon would have a better performance.


Project proudly done by

Thin Film and CIS/CIGS

Project :Size:Commission:

25 Begonia Terrace11000W2013

1. Thin Film (Amorphous), Flexible Thin film2. CIS/CIGS (Constituents Copper, Indium, Gallium and Selenium)

Less sensitive to Heat and Temperature


Pre-Implementation Site Conditions


Factors to be consider before implementation

• Shading• Direction and Orientation of Module• Financial Considerations


• Shading– Blocks the sunlight from reaching the module and affect

power generation• E.g.: Taller buildings might cast a shadow on modules

– Cause the PV string to drop in power (Reason for MPPT)



• Orientation and Direction of modules– To be facing the North or South for maximum exposure to

sun (East to West)– Angling of module

• Causes Water residue (Shadowing)• Heat dissipation (heat causes power lost)• Soiling (Dust and Dirt)



Direction of facing affects :• Hours of sun exposure which may lead to significant power loss

Shading by nearby buildings causes :• Complete loss of power

North South

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West

East


• Financial Considerations– Fit in Tariff– Government

• Certain Tax Rebate• Carbon Credit

– Building Estatic and ROI




Building Integrated Photovoltaic• Government Grant• Green Building Grant

12Kwp SystemReturn of Investment: 20 YearsAfter Grants: Less than 8 Years

Garden By the Bay (Super Tree)• Innovation Grant• Green Building Grant

10 - 20Kwp SystemInnovation and Ecstatic Purpose


Off-Grid Solar and how it works


1. Solar Module to generate power• Selection of Module depends on Voltage and Ampere• Size of panel depends on amount needed for charge• Eg. 12V/24V system requires 18V/36V Panel• Custom design for 48V system and Hybrid

2. Charge Controller to regulate voltage and current• Size according to Ampere and voltage configuration• Eg. Normal or controllers with MPPT

3. Battery to store power• Storage to be design with backup of 3 – 5 days depending on

requirement• Battery type eg. Lead Acid or Gel depending on environment

Item needed


4. Inverter to convert DC to AC (Optional)• Inverter selection depend on Load usage and voltage• Hybrid possible with available onsite generator or other

alternative source of power to charge battery

• Eg. 50W AC Fan requires 50W Inverter with 3x surge factor

Item needed


Why need Off Grid Power

1. Critical in areas of Security (CCTV, Lights and sensors)

2. Backup during power shortage/blackout

3. Used in remote islands where diesel/petrol is expensive

4. Telecommunication/satellite/repeater station


Why need Off Grid Power

1. Expensive to install in areas where laying cables is needed to connect to grid

2. Hard to reach areas accessible by boat or helicopter3. Backup power for security devices4. Portable power

Summary,

Power is critical to daily operation. with a reliable backup power system, we can be assure that our security/safety are not compromised


Case Study 1

Bicycle Rental Located at Hougang and Punggol


Case Study 1

1. 1 unit of AC Ceiling Fan 100W AC2. 1 unit of CPU 150W AC3. 4 units of CCTV and Recording unit 150W AC4. 2 unit of SPOT lights 100W AC (200W)5. 1 unit of Fridge (80W DC)

Hours of Usage: 8 – 10 hours per day

Total Power Consumption: 6000Wh Per Day


Case Study 1

1. 12 units of 198Wp Sharp Module2. 1 unit of Steca MPPT Charge Controller3. 2400Ah Battery Capacity4. 500W Steca Inverter

System Design

48V Configuration5 Days Power Backup30% Conservative power loss

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Case Study 2

Bus Stop located at Sentosa


Case Study 2

1. 1 unit of AC Ceiling Fan 100W AC2. 2 units of 30W LED Lights

Hours of Usage: 7pm – 7am per day (Lights)AC Fan Turn on when Button is pressed

Total Power Consumption: 1560W Maximum


Case Study 2

1. 4 units of 24V, 100Wp Module2. 1 unit of Steca MPPT Charge Controller3. 400Ah Battery Capacity4. 300W Steca Inverter

System Design

12V Configuration5 Days Power Backup30% Conservative power loss

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Other Projects

Thank you

Bringing Sun Energy Nearer To You

Prepared By: Soh Guan Lee


photovoltaic presentation (jakarta)

Engineering