EFFICIENT SOLAR STRING OPTIMIZERS,

INVERTERS AND SOLAR CELL TECHNOLOGIES

DRIVING THE SOLAR INDUSTRY

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THANK

YOUWEBINAR MEDIAPARTNER

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THE

INNOVATION

HUB FOR THE

NEW ENERGY

WORLDThe Leading Exhibition

Series for Batteries and

Energy Storage Systems

The International Exhibition

Series for Intelligent Energy

Use, Management and

Infrastructure

The International Exhibition

Series for E-Mobility and

Smart Charging

The World's Leading

Exhibition and Conference

Series for the Solar Industry

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5

TODAY‘S

GUESTS

CTO,

Ferroamp Elektronik

AB

Björn Jernström

Product Marketing,

Fronius International

GmbH

Leonhard Peböck

SPEAKER SPEAKER

Product Marketing,

REC Solar EMEA GmbH

Neil Edwards

SPEAKER

DC coupled solar strings for lower system cost and higher yieldIntersolar webinar 2020-09-08

Björn Jernström, CTO

Electricity. Reinvented.

The energy transition is DC powered

GENERIC SOLAR STRING OPTIMISER

Add solar power to any energy system with a high voltage DC link, for example:

On-grid storage systems

Off-grid systems

EV charging stations

Public transport

APPLICATION: ON-GRID STORAGE SYSTEMS

AC

Storage inverterAC DC

Add solar energy directly to DC side of conventional storage inverters Significantly lower conversion losses than if solar power was connected on AC side Easy retrofitting of solar energy

Generic SSO

APPLICATION: OFF-GRID SYSTEMS

DC loads DC

Configurable charging profiles for different batteries Integrated power throttling when batteries are full and load demand is low Arbitrary number of MPPTs

Generic SSOs

APPLICATION: EV CHARGING STATIONS

Rectifier

DC

Simple integration of solar energy to EV charging stations Integrated DC link protection functions Battery connection possible EV chargers

DC frontend

APPLICATION: PUBLIC TRANSPORT

Rectifier

DC

Cost effective distributed PV generation Direct feed in to third rail or overhead line DC anti-islanding

GENERIC SOLAR STRING OPTIMISER

MPP tracker with Global MPPT

Power throttling to zero

Configurable DC link protection

Configurable DC link droop control

99.5% peak efficiency with SiC

String insulation monitoring and residual current detection according to EN 62109-1 and 62109-2

Complies with coming CISPR 11 Ed.6.2 2019 emission requirements for solar installations

Integrated monitoring

Power line communication

BLOCK DIAGRAM

Electricity. Reinvented.

Save the date, Ferroamp is exhibiting at:

Munich, June 9 – 11, 2021

Leonhard Peböck

Fronius International GmbH

Froniusplatz 1, 4600 Wels

THE UNIQUELY VERSATILE SOLUTION

FOR ENERGY SECTOR INTEGRATION

2 Fronius International GmbH / GEN24 Plus / 2020

FRONIUS GEN24 PLUS

UNIQUELY VERSATILE

3 Fronius International GmbH / Residential solutions / 2019

ENERGY SECTORINTEGRATION

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THE GEN24 PLUSFOR INFINITE ENERGY MANAGEMENT POSSIBILITIES

VARIOUS

OPEN INTERFACES

/ 4 digital In- and Outputs

/ Modbus RTU, Modbus TCP

/ Solar API (JSON)

/ LAN/Wifi

/ Smart control of heat pumps, air conditionings,

wallboxes, smart home systems and many more

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THE GEN24 PLUSFOR MAXIMUM INDEPENDENCE DURING A GRID OUTAGE

BASIC BACKUP POWER FUNCTION:

PV POINT

/ Socket supplied in case of a grid outage

/ Loads up to 3 kW

/ Symo: 4.1 kW for 5 sec. (starting power)

/ Primo: 4.7 kW for 5 sec. (starting power)

/ Automatic activation in case of a grid outage

/ No time-consuming additional installation

(backup switch) required

Fronius International GmbH / GEN24 Plus / 2020

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THE GEN24 PLUSFOR MAXIMUM INDEPENDENCE DURING A GRID OUTAGE

REAL 3-PHASE BACKUP POWER:

FULL BACKUP

/ Supply of the entire household

/ Real, 3-phase backup power (Symo GEN24 Plus)

/ Energy independence in case of a grid outage

/ Automatic switchover

/ Battery is required

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THE GEN24 PLUSFOR MAXIMUM SYSTEM EFFICIENCY WITH BYD

Fronius International GmbH / GEN24 Plus / 2020

/ 94% system efficiency

confirmed by the HTW Berlin

/ Battery input with 22 AMP

/ Maximum charging/discharging power

up to 9 kW

MOST EFFICIENT USE OF THE PV POWER

ALSO DURING WINTER MONTHS

OR SHORT PERIODS OF INSOLATION

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THE GEN24 PLUSFOR MAXIMUM FLEXIBILITY IN SYSTEM DESIGN

Fronius International GmbH / GEN24 Plus / 2020

/ 2 MPP Tracker + extra battery input

/ Broad DC input voltage range

/ Symo GEN24 Plus (3-phase): 80-1000V DC

/ Primo GEN24 Plus (1-phase): 65-600V DC

/ High current carrying capacity of the MPP Tracker

/ Symo GEN24 Plus (3-phase): 25A / 12,5A (MPPT 1 / 2)

/ Primo GEN24 Plus (1-phase): 22A / 12A (MPPT 1 / 2)

SUPERFLEX DESIGN

STRINGS FROM 3 MODULES ON

CAN BE REALISED

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THE GEN24 PLUSFOR THE LONGEST LIFE SPAN

Fronius International GmbH / GEN24 Plus / 2020

/ LONGER LIFE SPAN

of the inverter through active cooling

/ LATER POWER DERATING

at high temperatures

/ MORE YIELD and FASTER AMORTISATION

ACTIVE COOLING

EASY AND FAST EXCHANGE

OF THE POWER STAGE

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THE GEN24 PLUSFOR THE FASTEST SERVICE

AND THE HIGHEST DEGREE OF SUSTAINABILITY

Fronius International GmbH / GEN24 Plus / 2020

NO NEED TO EXCHANGE

THE WHOLE INVERTER

All information is without guarantee in spite of careful editing - liability excluded.

Intellectual property and copyright: all rights reserved. Copyright law and other laws protecting intellectual property apply to the content of this presentation and the documentation enclosed (including texts, pictures, graphics, animations

etc.) unless expressly indicated otherwise. It is not permitted to use, copy or alter the content of this presentation for private or commercial purposes without explicit consent of Fronius.

Munich, GermanyREC Alpha Black Series

THE REC ALPHA SERIES:Empowering the Energy Revolution with Ground-breaking Technology

Public

Neil Edwards – Senior Technical Communications Manager, REC SolarSeptember 08, 2020

• Next generation cell technology• Hybrid, bifacial, half-cut heterojunction cells• Leading temperature coefficient: -0.26%/ºC

• Advanced cell connections• Low temperature process using foil and wires• Solder-free cell connections• 81% reduction in panel lead content

• Super-strong frame design• Withstands exceptionally high snow & wind loads• Flexible clamping zones

• Industry-leading warranty• 92% guaranteed after 25 years• Up to 25 years product & labor coverage

The REC Alpha Series: What makes it so different?

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Best passivation• Leading temperature coefficient• More power when sun is strongest• More energy in hot climates

REC Alpha Series: A powerful hybrid combination of cell technology

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Better for the environment• Lead-free silver paste• No bus bars for more cell exposure

Highest bifaciality• Captures more light• Higher power

N-type technology• Highest crystalline cell structure efficiency• No LID

High power structure through technology hybrid

N-type mono crystalline silicon wafer for:• Performance• Reliability• Abundance

Amorphous silicon for: • Great absorption• Superior passivation• Low temperature deposition

Advanced Cell Connections:Environmentally-friendly, solder-free cells for high efficiency

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Solder-free connections• Lead-free as no solder is used on cell• Lead-free silver paste• High resistance against micro-cracks

Low temperature manufacturing• Greatly reduces thermal stress for fewer defects• Energy-efficient process for fewer emissions and lower CO2 footprint

No busbars• Exposes more cell area for more absorption• Increased contact between fingers and

metallization for higher power

16 wires• Shorter current path• More contacts reduce resistance• Only 390 solder points in entire panel• Round shape to improve internal

reflection and reduce shading

Fewer production steps than competitive processes• Less complex and intensive production• No reduction in carrier collection efficiency

Super-strong frame design adds real performance advantages

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Support bars for better protection• Limit deflection of laminate under load, protecting cells from damage

• Fewer defects means higher output and a longer life

• Increase installation flexibility through wider clamping zones and higher loads

Thinner frame• Ensures stability and durability of panel construction• Lighter weight makes panel easier to handle • Optimizes transport for fewer trucks on the road

Support only around edge of panel• Weight of load pushes laminate downwards• Increased deformation increases risk of cell breakage

and panel deformation• Needs specific and narrow clamping zones

Higher frame height• Needed to ensure stability of panel• Uses more raw materials • More transport needed to deliver same power

REC Alpha Series: Leading performance on a 60-cell platform from Solar’s Most Trusted!

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REC’s Twin Design concept with super-strong frame design for years of durable high power

Outstanding power maximizes energy generation from limited spaces

High power density of high-efficiency HJT cells help maximize power on a rooftop space

Reduced lead content due to advanced, solder-free cell connections

Leading temperature coefficient for more energy in the heat of peak times

Warranted power after 25 years for a secure investment

The content of this presentation is strictly confidential. REC is the exclusive owner or licensee of the content, material, and information in this presentation. Any reproduction, publication or reprint, in whole or in part, is strictly prohibited. The information in this presentation may not be accurate, complete or up to date, and is provided without warranties or representations of any kind, either express or implied. REC, as well as its directors, officers and employees, shall not be responsible for and disclaims any liability for any loss or damages, including without limitation, direct, indirect, incidental, consequential and special damages, alleged to have been caused by or in connection with using and/or relying on the information contained in this presentation.

Thank you!neil.edwards@recgroup.com

THANK

YOU