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This is Solar Array Simulator to test the solar inverters for Maximum Power Point Tracking (MPPT) with dynamic simulation of Voc, Isc (I-V curves), Irradiation, Temperature coefficients, diff daly light conditions including cloudy, rainy dark conditions. About 7 installations already in India in research & educational institutions
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PV Inverter Test Solutions
For more information:Electronic Enterprises (India) Pvt LtdR Suman, [email protected]+91-40-23243352
● Broadest Programmable Power Line in the
world
● DC Power Supplies
● DC Loads
● Modular ATE supplies
● AC Power Sources
● AC Loads
● Power Bus Simulation
— Spacecraft
— Renewable Energy
— Aviation
— Transportation
● Scientific Research
● OEM Integration
● Military Programs
Modular ATEPower systems
ProgrammableAC sourcesand Loads
ProgrammableDC suppliesand Loads
Bench-topDC supplies
● Division HQ located in San Diego, California
● ~450 Employees
● ~120,000 ft2 (11,100 m2) in two buildings: — Marketing & Product Management — Power, Digital, Software & Systems Engineering — SMT & Through Hole PCBA Manufacturing, Product Sub and Final Assembly and Test and Systems Integration and Test
● ISO 9001 Compliant Quality System
CompleteEngineeredSolutions
Products &Solutions Products
Solutions
For more information:Electronic Enterprises (India) Pvt LtdR Suman, [email protected]+91-40-23243352
“Surround the Inverter” test system
BSS(Battery String Simulator)
MX Series AC/DC source(Utility Simulator and Regenerative unit)
Regenerative
AC/DC Power
TerraSAS(PV Simulator)
Programmable AC Load
Control Software
For more information:Electronic Enterprises (India) Pvt LtdR Suman, [email protected]+91-40-23243352
TerraSAS Terrestrial Solar Array Simulator
● The world-wide Leader● Application: Testing Satellites for Development & Production● Function: Simulates satellite solar panels behavior in both Static and Dynamic modes like Eclipse and Spin● Benefits: Flexible and modular from 1 channel to any channel count —Fully Integrated —Fully warranted —World-wide support
● Solar cells operate like a battery when illuminated from the sun● Combining cells into panels generates higher voltage and power very similar to batteries
PV Cell(2.3VDC)
PV Module(~60VDC @ ~250W)
PV Array(~600VDC @ 20,000W)
AMETEK Solar Array Simulation History
From Solar Cells to Installations
Solar Cell Characteristics● There is a difference in output voltage and current characteristics for a standard DC power supply and a solar panel. — A Power Supply is a “stiff” source meaning that the voltage is constant regardless of the load. — The Solar Cell is a “soft” source in that the voltage drops off as you load it● The output power characteristic for a solar panel is important because the PV inverter needs to operate at the peak power point to return the most power back to the utility grid
Solar Cell
Solar Cell
Typical DCPower Supply
Solar Panel(Full Sun)
Single Power point Multiple Power points
Solar Panel(Shadowed)
● A grid connected PV inverter must operate on the Maximum Peak Power Point (MPPT) to efficiently convert this energy● It must also pick the correct maximum power point even when the PV panel is shaded
For more information:Electronic Enterprises (India) Pvt LtdR Suman, [email protected]+91-40-23243352
Power Supply Comparison
TerraSAS System
● Just creating an IV curve does not assure a power supply will track a PV Inverter — Response time to load changes and MPPT algorithms are critical — Modifications must be made to the power supply’s control loops and output capacitance to provide a realistic simulation● If the power supply is too slow it will not track the IV and the inverter will not be tested properly and can become unstable.
● Available in three versions: — Micro Inverter for 300-600W, low voltage — Non-Isolated up to 600V per channel — Isolated up to 1000V per channel● Statically Simulates: — Various solar cell material curves — Different panel configurations — Multiple power points● Dynamically simulates the change in array output based upon fluctuations in light energy and temperature● Simulates test protocols and events that any solar installation will be subjected to● Working/Designing with customers to establish to provide best possible product
GoodTracking
NotTracking
Competitor’s Flat Top IV Curve
TerraSAS Smooth IV Curve
Multiple Configuration Examples
● Completely Independent Channels● Three power modules available — 1200W/ch for Micro-Inverters — 600V@15KW/ch for Isolated Inverters — 1000V@10KW/ch for non-isolated Inverters● Can be programmed independently or paralleled to provide high-power channels● Can simulate shadowed panels and moving shadows● Panel configurations at installation sites are easily created and managed independently
● Programmable irradiance levels from 0-2,000/m2 ● Programmable temperature from -100 to +100 C
● Programmable Fill Factor from 0.5 - 0.95● 1024 data points the TerraSAS generates a more accurate IV curve, with no “flat spots” in the IV curve● 120Hz MPPT Frequency
High-Performance Capability
Two 105KW channel, 600V TerraSAS system
Terra
SAS
Terra
SAS
Terre
strial S
olar Arra
y Sim
ulator
Terre
strial S
olar Arra
y Sim
ulator
For more information:Electronic Enterprises (India) Pvt LtdR Suman, [email protected]+91-40-23243352
Sandia National Lab Relationship…This fully-integrated PV simulator from AMETEK has performed well in preliminaryevaluations and has shown the flexibility necessary to exercise the variations in MPPT algorithms…
Graphical User Interface
Create Your Own Curve
Integrated Solar Panel library
Unique Dynamic Simulation
● The TerraSAS simulates irradiance level, temperature level, and simulation time to ramp the voltage, temperature or irradiance level over time● Uses any IV curve previously defined● This ability allows the unitto simulate dynamicirradiance and temperaturegoing from night to day orfrom a clear day to cloudcover
Array
For more information:Electronic Enterprises (India) Pvt LtdR Suman, [email protected]+91-40-23243352
Programmable Parallel and Series String Configurations
Measurement Data Logging
Isolated Output Channels
To test non-isolated inverters, isolated PV simulator is required to prevent the inverter GFI / DGFI from tripping by common mode noise.
PV -ChannelDC Power SupplySimulatingPV solar panel
PV -inverter under testNon -isolated
(transformerless)AC(in/out)
DC OutputSection
AC
AC
DC
Terra
SAS
Terra
SAS
Terre
strial S
olar Arra
y Sim
ulator
Terre
strial S
olar Arra
y Sim
ulator
For more information:Electronic Enterprises (India) Pvt LtdR Suman, [email protected]+91-40-23243352
MX/RS Series
MX/RS Series
● Programmable AC, DC and AC+DC power Source● Regenerative sink option — Returns power back to the utility line● MX Series: 15KVA – 270KVA● RS Series: 90kVA – 540kVA● Harmonic Waveform Generation — Fund-50th
● Harmonic Analyzer measuring Fundamental to 50th
● Simulate utility disturbances
MX-45(45KVA)
RS-90(90KVA)
SNK(Regenerative) Option
● The –SNK or current sink option enables the MX to feed energy back onto the grid when testing grid-tied products.● The ability of the MX to simulate the grid provides unique opportunities to test the EUT for immunity to commonly occurring line anomalies like voltage and/or frequency fluctuations. ● The SNK option requires special amplifiers that have a different control loop from the standard MX amplifiers. This different control loop ensures greater stability under regenerative load conditions.
Low Voltage Ride Thru Test (LVRT)
AC and DC Programmable Power Source Bi-Directional and Regenerative!
For more information:Electronic Enterprises (India) Pvt LtdR Suman, [email protected]+91-40-23243352
● Anti-islanding● Utility disturbances — Phase loss — Voltage dips and interruptions — Frequency disturbances● DC injection● Harmonically enriched waveforms test inverter tracking capability● Test against Interharmonic susceptibility
Utility Simulation – MX Series
Voltage Variations
Frequency Fluctuations
● Source voltage varied from 240V – 195V. The result is that the inverter detects the low voltage and shuts down at 205V
● The inverter must disconnect itself in the event of a frequency variation that is out of tolerance. ● In this example, the inverter being tested has a default setting with a “low” trip limit of 59.3 Hz, and a high limit of 60.50 Hz.
● The Mx was programmed to start at 60 Hz, and then successively go to 59.80 - 60.20 – 59.60 – 60.40 – 60.60Hz
MX/RS Series
MX/RS Series
AC and DC Programmable
Power Source
Bi-Dire
ctional a
nd
Regenerative!
AC and DC Programmable
Power Source
Bi-Dire
ctional a
nd
Regenerative!
MX applies power
MX voltage step-down
Inverter power-up
Inverter Shut-down
For more information:Electronic Enterprises (India) Pvt LtdR Suman, [email protected]+91-40-23243352
Voltage Distortion Test
● Inverter behavior when the unit is subjected to significant distortion of the public supply (i.e. the immunity and emission of the inverter are both tested in this case)
LD Series
BSS
Programmable AC Load
Battery String Simulator
Programmable AC Load
● Programmable AC Load● 3kVA-18kVA● Operating Modes — Constant Current — Constant Voltage — Crest Factor — Power Factor — Short Circuit● Load transient generation in any mode with 1msec programming resolution● 45-440Hz
House Loads Simulation
Battery String Simulator
● Fully programmable behavior both Static and Dynamic modes● Battery behavior easily modified via spreadsheet download to simulate and battery topology including Nickel Metal Hydride, Lithium Ion, and Nickel Cadmium● Sensor simulation available to provide thermistor, strain gauges, heater loads, and cell bypass/short.
For more information:Electronic Enterprises (India) Pvt LtdR Suman, [email protected]+91-40-23243352
CTSCompliance Test System
New IEC/TR 61000-3-15Assessment of low frequency electromagnetic immunityand emission requirements for dispersed generation systems in Low Voltage networks
Inverter Compliance Test System
● IEC 61000-3-15 (in draft) — 2010 Emissions (harmonics and flicker) — Compliance Test for Grid- Tie Inverters — Similar to IEC 61000-3-2/3 and 3-11/12 — CTS release scheduled for Dec., 2011● Requires AC mains simulation, i.e. regenerative capability● Interharmonic susceptibility test● Country defined DC injection — CTS release scheduled for Dec., 2011● AMETEK CTS is number one in the market
Future Compliance Test Solutions
● IEC 62116-2008● IEC61000-3-15(in draft)● GS S1 - TUV● IEC 61727
● IEC TS 62578 ● IEC 62124● UL1741 ● IEEE1547● GB/T19064● GB/T19535● EN50530
CTSCTS
Compliance Te
st Syst
em
Compliance Te
st Syst
em
For more information:Electronic Enterprises (India) Pvt LtdR Suman, [email protected]+91-40-23243352