SOLAR MICRO INVERTER LETRIKA SMI 260 COMMUNICATION GATEWAY Apparent Power Control (APC) P Q UNIQUE MICRO INVERTER WITH REAL & REACTIVE POWER CONTROL 2 MICRO INVERTERS UNIQUE MICRO INVERTER WITH REAL & REACTIVE POWER CONTROL MAIN ADVANTAGES • Apparent power control (APC) • Smart grid ready • Grid power quality improvement • Extremely precise MPPT algorithm • The best overall solar energy conversion • Compact waterproof design • Wireless communication • Very long life-time (25 years) • Fire safe installations • Three phase balanced installations with no additional equipment for reactive power compensation • Integrated interface protection system APPLICATIONS Micro, small and medium PV installations (residential, commercial / on-grid, off-grid with storage) Typical applications MULTIPLE ORIENTATIONS AND OPTIMAL USE OF ROOF SURFACE • Modularity • Each panel MPPT • Apparent power control PARTIAL SHADING • Each panel MPPT • Extremely precise MPPT UNIQUE MICRO INVERTER WITH REAL & REACTIVE POWER CONTROL MICRO INVERTERS SMALL SPECIFIC SYSTEMS • Single panel AC grid connection • Modularity STRING AND MICRO INVERTER COMBINED FIELD APPLICATIONS • Each panel MPPT • Extremely precise MPPT POLE MOUNTED • Apparent power control • Grid power quality improvement • Smart grid ready CARPORTS • AC compact fire safe solutions COMBINATION WITH E-MOBILITY • Smart grid ready • Fire safe installation OFF-GRID • Modularity • AC battery • Battery storage 3 MICRO INVERTERS UNIQUE MICRO INVERTER WITH REAL & REACTIVE POWER CONTROL THE MOST EFFICIENT CONVERSION OF LIGHT INTO ELECTRICITY ADVANTAGES OF MI SYSTEMS • The best PV levelized cost of electricity (LCOE) / Total cost of ownership (TCO) in comparison with power optimizers and string inverters. • Up to 20 % higher energy yield compared to string inverters due to individual panel level shading optimization. • No single point of failure. In case of one inverter's malfunction, the others continue generating energy. • Low service cost, since inverters are simply exchanged in case of failure. • Modularly built-up system. It can be enlarged gradually in time. • Wireless monitoring and control. Each panel's performance can be examined and controlled through standard WMBUS communication. P - Q diagram Reactive power generation from 0 to 260 VAr (cap., ind.) • Safety: • When operating, only a low DC voltage (up to 50V) is present on the roof. • In the event of fire and other hazards inverters will switch off in max 2 seconds. P 260 W • Long life-time without maintenance (25 years). 290 VA App aren t Po wer • Simple and cost effective installation. No high DC voltage on roof. Simple 230V AC UL and VDE approved, IP67 rated, UV resistant T connection cables used for inverter interconnections. Real Power 4 • Micro-grid suitable technology. • Suitable for off-grid applications with energy storage. Q -260 VAr -125 VAr 125 VAr Reactive Power 260 VAr UNIQUE MICRO INVERTER WITH REAL & REACTIVE POWER CONTROL External cloud server l ona Persputer com ile Mobne pho DC / AC AC / DC MICRO INVERTERS 5 6 MICRO INVERTER UNIQUE MICRO INVERTER WITH REAL & REACTIVE POWER CONTROL SOLAR MICRO INVERTER LETRIKA SMI 260 FEATURES • Reactive power control. Dynamic power factor regulation. • Power factor options: • Unity (1), • Fixed down to 0.8, capacitive/ inductive, • Dynamic according to power or grid voltage. • Very low power needed to start the inverter (< 2W). • Foil capacitors are used, allowing very long lifetime (25 years) and high MTBF values (up to 600 years MTBF). • Electronics is designed with automotive standard components, ensuring easy implementation of automated production with automotive quality and traceability. • Compact waterproof design. • Internet access to panel data through the communitation gateway (WiFi, Ethernet gateway with embbeded web server). The desired real power and power factor can also be set through the communitation gateway allowing dynamic control of micro grid performances and adaptation to every grid quality. • Extremely precise MPPT algorithm. • Very low panel's DC ripple current (50 mA). • High efficiency. • Integrated IPS (Interface Protection System) /Anti-Islanding Protection. • Optional: parallel connection of two solar panels each with peak power up to 140 W and max DC input voltage up to 60 V (Double DC connector). • Suitable for 60 and 72-cell panels up to 310 Wp. UNIQUE MICRO INVERTER WITH REAL & REACTIVE POWER CONTROL MICRO INVERTER TECHNICAL CHARACTERISTICS PARAMETERS VALUE Recommended rated input DC power 200 W - 275 W Max PV panel power up to 310 Wp Max DC input voltage 60 V MPPT range 21 V-55 V Min start voltage 21 V Max DC short circuit current 12 A Max input current 10.5 A Operating range 15 V- 60 V Nominal apparent AC power 290 VA Nominal real AC power 260 W Nominal reactive AC power (at power factor 0.9) 125 VAr Max reactive power 0 – 260 VAR (cap., ind.) Nominal output current 1.15 A Frequency range 50 Hz (47.5 Hz-55 Hz) According to standards Voltage range 240 V systems 180 V – 270 V According to standards Reactive power regulation 1 (Unity) 0.8 cap. … 1 ... 0.8 ind. Dynamic regulation THD odd harmonics <3% Efficiency max. 96.1 % Efficiency CEC/EURO 95.5 % / 95.3 % MPPT efficiency 99.9 % Panel's ripple current 50 mA Ambient temperature -40 °C … +65 °C Cooling Natural Communication WMBUS 868 Mhz (optional 915 Mhz) Complies to EN 50438, VDE 4105, CEI 0-21, G83/2, EN 62109-1, EN 62109-2,EN 61000-6-3, EN 61000-6-1, RoHS Lifetime expectancy 25 years Limited warranty 25 years Housing Die casted aluminum IP protection IP67, completely potted (waterproof) Dimensions (without mounting brackets) 209 x 221 x 40 mm Mounting brackets M8x16, distance 130 mm Weight cca 2 kg AC connection system Amphenol LTW VTC/Wieland RST DC connection system Amphenol LTW H4 Standby consumption 0W Integrated Interface Protection System/Antiislanding protection as for VDE 4105 7 8 COMMUNICATION GATEWAY EMBEDDED LINUX OPERATING SYSTEM COMMUNICATION GATEWAY The communication gateway enables simple wireless monitoring and control of each individual panel of a solar power plant from any web enabled device through an intuitive graphical interface. Three-phase grid system can be monitored and controlled with only one device. Cloud server FEATURES • Embedded linux operating system. • RF, 868Mhz WMBUS communication. • Software stack complies to EN 13757-1 … 5 and EN 870-5. • Possibility to send special command to the micro inverters (desired power factor, desired generating power, start-stop command). • Collecting, storing and retransmitting data to the service provider via Wifi, Ethernet and GSM / GPRS communications. • Works with registered micro inverters, which are filtered by ID number. • AES-128 encryption. • WAN connectivity. • Allows balancing of production and consumption of electricity in micro grid networks. Internet connection COMMUNICATION GATEWAY EMBEDDED LINUX OPERATING SYSTEM MONITORING 9 CONTROLLING • Web application compatible with all platforms: PC, notebooks, smartphones, tablets. • Generated energy on each PV panel (daily, weekly, monthly, yearly). • Actual power from each PV panel. • Each PV panel DC voltage and current. • Each micro inverter AC output current and voltage. • Efficency of each PV panel. • Presence of each PV panel. • Faults on each panel. • Internal temperature of each micro inverter. • Wake up and sleep time of each micro inverter. The power plant can be monitored via notebook, tablet and smartphone. • Each micro inverter power. • Each micro inverter power factor. • Each micro inverter ON-OFF. Main information: • Overall energy • Overall reduced CO2 emissions • Earned / saved money • Current power • Alarms CLOUD SERVER • Data available for external cloud server. • Documented interface based on https protocol allows access to real time data for external cloud server. SETTINGS MAIN PAGE LETRIKA MANUAL / ABOUT ON STATUS 1600 W 1066.67 W 13.1 kWh 0.2 kWh 2.36 € 0.01 t OVERALL ENERGY DAILY ENERGY EARNINGS REDUCED CO2 EMMISIONS 0W 00:00 08:00 12:00 20:00 16:00 00:00 13.1 kWh 0.2 kWh 2.36 € 0.01 t OVERALL ENERGY DAILY ENERGY EARNINGS REDUCED CO2 EMMISIONS A3 A4 0.4 MWh 184 W 3.3 MWh 185 W 3.2 MWh 179 W 0W 00:00 04:00 08:00 12:00 16:00 20:00 VIEW: 00:00 PHYSICAL LAYOUT A2 A3 A4 A5 0.4 MWh 184 W 3.3 MWh 185 W 3.2 MWh 179 W 3.3 MWh 184 W A5 3 MWh 183 W 3 MWh 183 W 533.33 W Updated 34 s ago. A1 A2 STATUS 1066.67 W PHYSICAL LAYOUT A1 MANUAL / ABOUT ON 1600 W 04:00 Updated 34 s ago. VIEW: SETTINGS MAIN PAGE LETRIKA 533.33 W 3.3 MWh 184 W SETTINGS MAIN PAGE LETRIKA MANUAL / ABOUT ON Copyright (©) Letrika, d.d. - All right reserved. 0.2 kWh 2.36 € 0.01 t OVERALL ENERGY DAILY ENERGY EARNINGS REDUCED CO2 EMMISIONS 0W 00:00 04:00 08:00 12:00 16:00 20:00 00:00 13.1 kWh 0.2 kWh 2.36 € 0.01 t OVERALL ENERGY DAILY ENERGY EARNINGS REDUCED CO2 EMMISIONS Copyright (©) Letrika, d.d. - All right reserved. All the calculationsare onlyinformative. VIEW: A2 A3 A4 A5 0.4 MWh 184 W 3.3 MWh 185 W 3.2 MWh 179 W 3.3 MWh 184 W SETTINGS LETRIKA 13.1 kWh 0.2 kWh 2.36 € 0.01 t OVERALL ENERGY DAILY ENERGY EARNINGS REDUCED CO2 EMMISIONS SETTINGS MAIN PAGE LETRIKA STATUS 1600 W 1000 W 666.67 W 533.33 W 0W 00:00 04:00 08:00 12:00 16:00 20:00 00:00 13.2 kWh 0.3 kWh 2.37 € 0.01 t OVERALL ENERGY DAILY ENERGY EARNINGS REDUCED CO2 EMMISIONS A5 3.3 MWh 184 W 333.33 W 0W 00:00 04:00 08:00 12:00 16:00 20:00 00:00 Updated 34 s ago. DAILY POWER VIEW: PHYSICAL LAYOUT A4 3.2 MWh 179 W STATUS Updated 34 s ago. VIEW: A3 3.3 MWh 185 W MANUAL / ABOUT ON 1066.67 W A2 0.4 MWh 184 W Copyright (©) Letrika, d.d. - All right reserved. All the calculationsare onlyinformative. MANUAL / ABOUT ON DAILY POW 2014-9-18 ALL PANELS 4000 W A1 A2 A3 A4 A5 3600 W 3200 W 3 MWh 183 W 0.4 MWh 184 W 3.3 MWh 185 W 3.2 MWh 179 W 3.3 MWh 184 W 2800 W 2400 W 2000 W 1600 W 1200 W 800 W 400 W 0W 00:00 Copyright (©) Letrika, d.d. - All right reserved. 02:00 04:00 06:00 08:00 10:00 12:00 14:00 16:00 18:00 20:00 22:00 00:00 Allthe thecalculations calculationsare onlyinformative. All are only informative. Copyright (©) Letrika, d.d. - All right reserved. 0W 00:00 04:00 08:00 12:00 16:00 20:00 00:00 PHYSICAL LAYOUT A1 3 MWh 183 W Copyright (©) Letrika, d.d. - All right reserved. MAIN PAGE STATUS 533.33 W Updated 34 s ago. PHYSICAL LAYOUT A1 3 MWh 183 W MANUAL / ABOUT ON 1600 W 1066.67 W 533.33 W Updated 34 s ago. VIEW: SETTINGS MAIN PAGE LETRIKA STATUS All the calculationsare onlyinformative. 1600 W 1066.67 W 13.1 kWh All are only informative. Allthe thecalculations calculationsare onlyinformative. All the calculationsare onlyinformative. COMMUNICATION GATEWAY 10 EMBEDDED LINUX OPERATING SYSTEM SETTINGS MAIN PAGE LETRIKA MANUAL / ABOUT ON 13.3 kWh 0.4 kWh 2.4 € 0.01 t OVERALL ENERGY DAILY ENERGY EARNINGS REDUCED CO2 EMMISIONS SETTINGS MAIN PAGE LETRIKA STATUS 1000 W 1600 W 666.67 W 1066.67 W 333.33 W 0W 00:00 04:00 08:00 12:00 16:00 20:00 00:00 MANUAL / ABOUT ON 13.3 kWh 0.4 kWh 2.39 € 0.01 t OVERALL ENERGY DAILY ENERGY EARNINGS REDUCED CO2 EMMISIONS STATUS 533.33 W 0W 00:00 04:00 08:00 12:00 WEEKLY POWER VIEW: 2015-2-2...2015-2-8 WEEKLY P ALL PANELS 20:00 00:00 ALARM HISTORY VIEW: 4000 W Panel ID Microinverter ID Time Alarm no. Error 3600 W A1 0000020B 6. 2. 2015 14:58:46 9 ERR_ADC_OFFSET_ERROR 3200 W A2 0000020B 6. 2. 2015 14:58:36 9 ERR_ADC_OFFSET_ERROR A3 00000241 6. 2. 2015 14:58:35 9 ERR_ADC_OFFSET_ERROR A4 0000020C 6. 2. 2015 14:58:36 9 ERR_ADC_OFFSET_ERROR 2800 W 16:00 Updated 19 s ago. Updated 52 s ago. 2400 W 2000 W 1600 W 1200 W 800 W 400 W 0W Feb 02 00:00 Feb 02 12:00 Feb 03 00:00 Feb 03 12:00 Feb 04 00:00 Feb 04 12:00 Feb 05 00:00 Feb 05 12:00 Feb 06 00:00 Feb 06 12:00 Feb 07 00:00 Feb 07 12:00 Feb 08 00:00 Feb 08 12:00 Feb 09 00:00 Copyright (©) Letrika, d.d. - All right reserved. All are only informative. Allthe thecalculations calculationsare onlyinformative. Copyright (©) Letrika, d.d. - All right reserved. TECHNICAL CHARACTERISTICS Communication to microinverters WMbus 868 MHz, selectable sample rate(min 60s) Communication to PC, tablet, smartphone WiFi IEEE 802.11/2.4GHz, Ethernet RJ45 Connectors 1xRJ45 Ethernet, 1xUSB(for additional functions) Operation system Embedded Linux, Integrated web server Data storage SD card (Max. 32 GB) Supply voltage 12v DC IP protection IP 40 Ambient temperature -20...+55°C Weight 350g Dimensions 150x37x155mm Optional sending data to cloud by predefined protocol Basic monitoring and settings through LCD display POWER SUPPLY Input 100...240Vac; 50Hz-60Hz Output 12Vdc, 700mA IP protection IP 40 Optional Extension cable for WMbus antenna All are only informative. Allthe thecalculations calculationsare onlyinformative. ABOUT US HEADQUARTERS Letrika Sol d.o.o. Vrtojbenska 64 5290 Šempeter pri Gorici, Slovenia T: +386 5 339 4262 E: info@letrikasol.com www.letrikasol.com Letrika Sol d.o.o. is a joint venture between companies Cosylab d.d. and MAHLE Letrika d.o.o. Cosylab d. d., Control System Laboratory Teslova ulica 30 1000 Ljubljana, Slovenia T: +386 1 477 66 76 F: +386 1 477 66 10 E: info@cosylab.com MAHLE Letrika d.o.o. Polje 15 5290 Šempeter pri Gorici, Slovenia T: +386 5 339 3000 F: +386 5 339 3801 E: si.info@si.mahle.com www.letrikasol.com June 2016 / 722.704.841