2. Introduction
This presentation is an introduction to RealForce Power’s product lines in both Solar PV
and Li-Ion Battery Applications. All of our product offering include:
Better Quality
Recognized by CE, TÜV Rhineland and UL
PV Module 12 years 90% / 25 years 80% power output warranty
Better Cost
Establishing scientific methods of cost accounting and control
Economies of scale: 1.3GW in 2011
Better Customer Service
24Hrs response time
Localized presence
Better Delivery
Local warehouse is set in Antwerp to cover European sales (PV Modules)
3. RURAL OR REMOTE REGIONS WITH NO
CENTRALIZED POWER CENTER
FACTORIES, ENTERPRISES, COMMERCIAL CENTERS
WITH BIG FLUCTUATION OF LOAD OR HIGH
ELECTRICITY COSTS
LOCATIONS THAT NEED 24 HOUR ENERGY UP-TIME
(HOSPITALS, BANKS, IT CENTERS)
AREAS LIMITED DUE TO ENVIRONMENTAL
PROTECTION RESTRICTIONS
LOCATIONS THAT REQUIRE TRANSPORT LIQUID
FUELS FOR ELECTRICITY GENERATION
LARGE LOAD CENTERS
Application Areas
Factory or Commercial
Centers
24 Hour Uptime
Locations
Environmentally Restricted
Locations
Island Communities with no
centralized power
Remote Mining
Operations
Liquid Fuel Generation
Locations
4. Micro-Grid Concept
1. PV Array 2. Inverter 3. Charge Controller 4. Battery Bank 5. Back up Generator 6. Other Renewable Energy SourceLegend
11. Battery Energy Storage System
System Overview: 1MWH power station energy storage system includes;
• 2 - 500KWH sub-energy storage systems, each of them is composed of 1pcs 100KW energy storage bi-directional converter
• 1 BMS (Battery Management System)
• 1 backstage monitoring and management system
• 1 set LiFePO4 battery pack . LiFePO4 battery pack is composed of 3456pcs RFE-F100 modules in series and parallel to make a
cluster; 12 clusters in parallel
The whole energy storage system is controlled
by one monitoring and management system (web
controlled). Special features include:
• high specific-energy
• long lifespan
• Safety & reliability
• wide operation temperature range
12. Turn-key Container Design
Portable
Short installation time
Complete inspection
Freight economic
Closed design, optimized safety
Battery Bank Design
13. RealForce Li-Ion battery storage systems
INCLUDE-
1. LiFePo4 battery packs
2. Battery Management System (BMS)
3. Power Conversion System (PCS)
4. Custom design monitoring system
5. Transformer
6. Grid-connected switch cabinet
7. Bidirectional active power & reactive
power charging
8. Watt-hour Meter
Li-Ion Battery Storage
Example: The Realforce Energy Storage System is a
1-megawatt-hour unit capable of producing 1 megawatt
or 2 megawatts of continuous AC power from a 40-foot
shipping container weighing 35,000 kilograms. The
container can be mounted on a concrete pad or on a
wheeled trailer.
14. 1. High energy density, about 6-7 times than lead acid batteries
2. Long life span, more than 6 years
3. Up to 7000 charge and discharge cycles
4. Warranty: 2 years
5. High nominal voltage (work voltage reaches 3.7V or 3.2V for
monomer cells)
6. Low self discharge rate, which is one of the most outstanding
features. Presently below 1% (less than 1/20 that of MH batteries)
7. Light, low volume, and weight only 1/5-1/6 that of lead acid
batteries
8. Better adaptability with high and low temperature, with working
temperature range between -20℃--60℃; -45℃ is also available
Battery Design Features
15. Lead acid battery LiFePO4 Battery Advantages of LiFePO4
Volume Large 1/3 of lead acid battery
Easily installing, low cost, safe and reliable
Weight Heavy 1/3 of lead acid battery
Cycles 300-400
300-400 times
2,000-7,000
No need to change battery every year, no
maintenance cost
Pollution
Serious Non-pollution
No water contamination caused by leakage as
lead acid batteries
Discharge and
charge
efficiency
～85% 95% More environmental protection
System cost
Though battery cost is
low, maximum power is
requested in tracking
module
Flat voltage plateau to
eliminate the need for
maximum power
tracking module
Much longer life span than lead acid batteries,
though a little high cost
Battery Comparison
16. Model
Nominal
Energy
(MWh)
Nominal
Voltage
(V)
Capacity
(Ah )
Charge cut-
off voltage
(VDC )
Discharge
cut-off
voltage
(VDC )
Charge and
discharge
current
(A)
Max.
charge
current
(A)
Input
power
KW
Output
power
KW
Max
efficiency
RFE-
216F800
0.5 MWh 691.2 800 756 626.4 160 240 100 100 >0.95
RFE-
216F1600
1 MWh 691.2 1600 756 626.4 320 480 200 200 >0.95
RFE-
216F3200
2 MWh 691.2 3200 756 626.4 640 960 400 400 >0.95
RFE-
216F8000
5 MWh 691.2 8000 756 626.4 1600 2400 1000 1000 >0.95
RFE-
216F16000
10 MWh 691.2 16000 756 626.4 3200 4800 2000 2000 >0.95
Battery Specifics
17. Grid charge automatically ( choose charging and discharging strategy according to the features of the energy storing
components, such as the typical four phases charging management)
When grid discharging, the discharge rate can be fixed before hand or be timer controlled in the monitoring system
When grid discharging, PQ decoupling control active and reactive independently and respectively
In the grid-connection, work with dispatching system, balance the peak and off-peak according to the historical curve or
the actual electricity load
In the grid-connection: works with AVC, this can control the static and reactive power grid; output reactive power in
emergencies to avoid low voltage load tripping and breakdown, controls dynamic reactive power
In off-grid applications, system can provide stable voltage and frequency to loads in the isolated network and can prevent
from over discharging
In grid-connected, it realizes stabilizing intermittent wave changes output feature of intermittency
Protective functions will protect safety of converter and battery in case of malfunction
Self-checking functions check input, output, and CPU of control loop thus prevent damage of hardware and wiring
Ethernet equipped: CAN and RS485, MODBUS enabled, IEC61850; can be easy connected with monitoring system and
control systems
Provided LCD connector that supports local setting
Provided CSPC software will record malfunctions, adjust setting defaults, and test input and output connections
Energy Storage System Functions
