Solar Backup Systems - worldwide. Michael Müller Solar Workshop Colegio Humboldt June 19th 20th, San José, Costa Rica

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1 Solar Backup Systems - worldwide Michael Müller Solar Workshop Colegio Humboldt June 19th 20th, San José, Costa Rica

2 1 Introduction Solar energy rapid positive development of solar technology over the last years standard components for solar systems available worldwide Global electricity demand rapid growth of demand increasing prices of fossil energy sources decreasing availability of fossil energy sources high costs of grid extension or stabilisation Photovoltaics as a fully developed part of the global energy mix also for backup systems

3 2. PV Systems worldwide

4 2.1 The PV off-grid system Concept: no access to grid energy for own consumption Premises: technically none costs for gridextension higher

2.1.1 Main components long lifetime according warranty period certifications (IEC 61215 etc.

5 2.1.1 Main components long lifetime according warranty period certifications (IEC etc.) long lifetime low energy consumption advanced charging algorithm low self consumption certifications (CE etc.) electronic protections solar battery certifications (IEC 61427)

6 2.1.1 Main components pure sine-wave output for adequate treatment of all kinds of loads good overload capabilities for handling of starting currents low self consumption adjustable automatic load detection to reduce energy consumption battery deep discharge protection electronic protections

7 2.2 The PV grid-connected system Concept: connection to grid produced energy totally fed-in consumed energy from grid Premises: stable grid feed-in tariff

8 2.2.1 Main components Solar modules long lifetime according warranty period (25 years) certifications (IEC etc.) Inverter long lifetime high efficiency large input voltage range certifications (CE etc.)

9 2.3 The PV backup system

10 3. Different concepts of PV backup systems + Backup + Backup

11 3.1 The PV off-grid system with backup

12 3.1.1 Required components Programmable charge controller Remote control / switch Current sensor Datalogger Bi-directional inverter-charger programmable multifunctional contacts

13 3.2 The PV grid-connected system with backup

14 3.2.1 Required components Switching relay Bi-directional inverter-charger programmable multifunctional contacts Solar battery

15 3.3 The instable grid backed up by solar

16 3.3.1 Priority on grid-supply Backup Priority Feasible if Grid available no subsidy for PV PV part has to be kept small

17 3.3.2 Priority on PV-supply Priority Backup Feasible if Grid available but very instable existing subsidy for PV more independence from grid required more use of PV energy required

18 3.3.3 Required components Programmable charge controller Remote control / switch Current sensor Datalogger Bi-directional inverter-charger programmable multifunctional contacts

19 4. Summary Technology exists we only have to use it

20 Thank you for your attention

21 StecaGrid-Inverters

StecaGrid Remote StecaGrid 2000+ Master StecaGrid 2000+

22 PV Netzeinspeisung StecaGrid 300/500 Übersicht PV Grid Connected StecaGrid 300 / 500 StecaGrid Control StecaGrid Remote StecaGrid Master StecaGrid Slave StecaGrid ph StecaGrid Configurator Referenzsystems

23 Photovoltaik Grid-System Grid Inverters and accessories StecaGrid 300/500 MiniString StecaGrid (Master/Slave) DualString

24 PV Netzeinspeisung StecaGrid W AC nominal output power - 5A max. input current - Input voltage level 45V-135V - MPPT-Array 45V-100V - modular expanded up to 12 units (3600 W AC ) - DC-Connectortyp: Tyco, MC3, MC4

PV Netzeinspeisung StecaGrid 500-500 W AC nominal output power - 5A max.

25 PV Netzeinspeisung StecaGrid W AC nominal output power - 5A max. input current - Input voltage level 45V-230V - MPPT-Array 75V-170V - modular expanded up to 7 units (3600 W AC ) - DC-Connectortyp: Tyco, MC3, MC4

PV Netzeinspeisung StecaGrid Control - Control unit for StecaGrid 300 and 500 - Integrated Display with Information about the

26 PV Netzeinspeisung StecaGrid Control - Control unit for StecaGrid 300 and Integrated Display with Information about the Yield per kwh, - Over current- und Fault current-protection switch and optional with ENS (Version D and D1) or without ENS (Version N)

27 PV Netzeinspeisung StecaGrid Remote - External wireless communications unit - Distance 100m-300m - Easy one-button-operation - It shows actual power Status ot the system Energy amount (Day, Week, Month, Year) complete generated Energy per kwh

PV Netzeinspeisung StecaGrid Remote We have

28 PV Netzeinspeisung StecaGrid Remote We have the most vantages of the Inverters StecaGrid 300/500 if we use it in small PV-Sytems whose adjustment and orientation are different or if we have limited shadow parts. on difficult roofs our Mini-String-Inverters works great, too.

PV Netzeinspeisung StecaGrid 300/500 StecaGrid 300 StecaGrid 500 StecaGrid Control StecaGrid Remote Komplettes System - Modulare expanded, up to a

29 PV Netzeinspeisung StecaGrid 300/500 StecaGrid 300 StecaGrid 500 StecaGrid Control StecaGrid Remote Komplettes System - Modulare expanded, up to a power output of W W and 500 W Inverters are combinable - Easy and flexibel to install - Mini Multi-String-System: perfekt for small PV-Systems

30 DC Freischaltungsbeispiele StecaGrid 300/500

31 PV Software StecaGrid 300/500 Installationvideos On our website you can find StecaGrid 300 und 500 Installationvideos. Installationsvideo StecaGrid

32 PV Netzeinspeisung StecaGrid StecaGrid Master StecaGrid Slaves - Master-Slave-Konzept - Multi-String-Konzept - Modular und Flexibel - StecaGrid Grid Inverter can be combinated to each power ranges of over 100kW.

33 PV Netzeinspeisung StecaGrid Master W AC nominal output power - 8A / 16A max. Inout current - Input voltage level 80V-400V - Datalogger und Display, IP 65, Version D with ENS

PV Netzeinspeisung StecaGrid 2000+ Slave - 2000 W AC nominal output power - 8A

34 PV Netzeinspeisung StecaGrid Slave W AC nominal output power - 8A / 16A max. Input current - Input voltage level 80V-400V - Expansion-unit, IP 65

35 PV Netzeinspeisung Netzwerk/PC-Link für StecaGrid Master

PV Netzeinspeisung StecaGrid 2000+ Two string inputs for solar panels per Inverter Each input has Maximum Power Point Tracker (MPPT) Different number of modul per string

36 PV Netzeinspeisung StecaGrid Two string inputs for solar panels per Inverter Each input has Maximum Power Point Tracker (MPPT) Different number of modul per string Different orientation from the strings Partial shadowing Performance tolerance from the Moduls Inputs can also be connected in parallel (double Input current, higher efficieny factor )

PV Netzeinspeisung StecaGrid 2000+ Two independent DC-Input per

37 PV Netzeinspeisung StecaGrid Two independent DC-Input per Inverter Optimal Generator-Connection if we have partical shadowing

PV Netzeinspeisung StecaGrid 2000+ Two independent DC-Inputs per Inverter

38 PV Netzeinspeisung StecaGrid Two independent DC-Inputs per Inverter Optimal Generator-Connection by different orientation Quelle:

PV Netzeinspeisung StecaGrid 2000+ Modulares System One master can be connected with up to two slaves The Master has a control- and

39 PV Netzeinspeisung StecaGrid Modulares System One master can be connected with up to two slaves The Master has a control- and display unit as well as a power element (Inverter) each Inverter yield 2000 Wac nominal output power Suitable for in- and outdoor installation

PV Netzeinspeisung StecaGrid 2000+ Galvanic seperation by HF-Transformer Inverter with electric isolation are usable for thin-film modules

40 PV Netzeinspeisung StecaGrid Galvanic seperation by HF-Transformer Inverter with electric isolation are usable for thin-film modules without any limitations as no leakage current is generated Due to innovative high-frequency design nervertheless compact and lightweight device

PV Netzeinspeisung StecaGrid 2000+ Quelle: Laue Elektrotechnik

electronis is complete protected No ventilator, The cooling system is

41 PV Netzeinspeisung StecaGrid Quelle: Laue Elektrotechnik Suitable for outdoor installation Protection class IP65, the electronis is complete protected No ventilator, The cooling system is about natural convection by the big dimensioned cooling element Quelle: FORE Enerji

PV Netzeinspeisung StecaGrid 2000+ Satrapy Systems Big systems with divers master or

42 PV Netzeinspeisung StecaGrid Satrapy Systems Big systems with divers master or master-slave-units Flexible AC-allocation at 3 phases Phase difference greeable to spezifications from EVU at 4,6kVA

43 PV Netzeinspeisung StecaGrid L 1 L 2 L 3

44 PV Netzeinspeisung StecaGrid L 1 Differenz L 1 L 2 und L 1 L 3 > 4,6 kva L 2 L 3

45 PV Netzeinspeisung StecaGrid L 1 L 2 Alle Differenzen <4,6 kva L 3

46 DC-Freischaltungsbeispiele 2 MPP Tracker StecaGrid 2000+

47 DC-Freischaltungsbeispiele 1 MPP Tracker StecaGrid 2000+

DC-Freischaltungsbeispiele Parallele Verschaltung der Eingänge In the case we have only one modul string connected to the DC-switch and we want use the

48 DC-Freischaltungsbeispiele Parallele Verschaltung der Eingänge In the case we have only one modul string connected to the DC-switch and we want use the complete 2kW power unit its absolutly important to connect both pluspole on the inverter. If only one pluspole is connected the max. power of the inverter is only 1kW.

49 PV Netzeinspeisung StecaGrid Advantage of such a system Higher energy income by a high reliability 2 MPP Tracker per power unit profitable for difficult roofs Application at in- and outdoor areas Quiet working process without any ventilator No derating up to an ambient air temperature of +40 C Easy to install and modular expandable Saftey with galvanic separation Communication and monitoring (per Display or via ethernet cutting-side or TCP/IP)

PV Netzeinspeisung StecaGrid 2000+ Display monitor for system readout Measuring and exposition all relevant inverters and system datas Data storage by

50 PV Netzeinspeisung StecaGrid Display monitor for system readout Measuring and exposition all relevant inverters and system datas Data storage by daily-, weekly-, monthly, yearly- and aggregate values Operating status and error messages Settings: an assortment of contries, date and time, language

PV Software StecaGrid 2000+ Installationvideos On our website www.stecasolar.

51 PV Software StecaGrid Installationvideos On our website you can find StecaGrid Installationvideos. Installationsvideo StecaGrid 2000+

PV Netzeinspeisung StecaGrid 2000+ Steca hotline number 0700 STECAGRID (= 0700 783224743, 12 cent/minute from within German public telephone network.

52 PV Netzeinspeisung StecaGrid Steca hotline number 0700 STECAGRID (= , 12 cent/minute from within German public telephone network. Monday to Friday from 08:00 a.m. to p.m.) Exchange unit approach: in advance change we have enough equipment at Steca 5 years warranty it is polongable to 10 years

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