Key Features： -Voltage range : 0 ~150V/600V/1000V/1500V/1800V -AC input voltage range : 200/220Vac, 380/400Vac , 440/480Vac -3U/18kW high power density module with easy master/slave parallel operation -Fast transient response solar array simulation -Simulation of multiple solar cell material's I-V characteristic (fill factor) -Simulation of dynamic irradiation intensity and temperature level from clear day to cloud cover conditions -Shadowed I-V curve output simulation (up to 4096 data points) -Low leakage current (< 3mA) -Precision V & I measurements -Auto I-V program: 100 I-V curves & Dwell time 1-15,000s -Static & dynamic MPPT efficiency test (accumulated energy methods) -Data recorded via softpanel -Standard USB / RS232 / RS485 interface -Optional GPIB / Ethernet interface -Real time analysis of PV inverters' MPPT tracking via softpanel -Free graphic user interface - softpanel for operation -Real world weather simulation fast I-V curve update rate : 1s -Support up to ten-channel SAS control for multi-MPPT testing -Build-in dynamic MPPT test profile of EN50530, Sandia, CGC/GF004 and NB/T 32004
SOLAR ARRAY I-V CURVE SIMULATION POWER SUPPLY
The Model 62000H-S Series have a built-in EN50530 and Sandia's SAS model that can easily program the Voc, Isc, Vmp, Imp parameters to simulate different solar cell materials I-V characteristic outputs with fast response time. Moreover, the TABLE mode is capable of saving a 128~4096 point array of user programmed voltages and currents via a remote interface. It can easily create a shadowed I-V curve and the I-V PROGRAM mode can save up to 100 I-V curves and dwell time intervals (1-15,000s) in memory. These advantages provide steady repetitive control conditions required for PV Inverter design as well as for verification testing. The solar array simulator is ideal for the following testing:
Design and verify the maximum power tracking circuit and algorithm of the PV inverter.
Verify the high/low limit of operating input voltage allowed for the PV inverter.
Verify the high/low limit of operating input voltage allowed for the inverter's maximum power point.
Verify the static maximum power point tracking efficiency of the PV inverter.
Measure and verify the overall efficiency & conversion efficiency of PV inverter. *
Verify the maximum power point tracking performance of the inverter for dynamic curves. (EN50530, Sandia, CGC/GF004, NB/T 32004 standard)
Verify the maximum power point tracking performance of the inverter under different time period conditions spanning from morning to nightfall.
Verify the maximum power point tracking mechanism of the inverter for the I-V curve when the solar array is shaded by clouds or trees.
Simulate the I-V curve under the actual environmental temperatures within burn-in room to do inverter burn-in testing.
*Requires an extra power meter.
SOLAR ARRAY I-V CURVE SIMULATION SOFTPANEL
The model 62000H-S Series include a graphical user Interface software through remote digital interface (USB / GPIB / Ethernet / RS232) control. The user can easily program the I-V curve of the 62000H-S Series as well as the I-V & P-V curves for real-time testing. In addition it will display the MPPT status for the PV inverter. Readings and the report function with real-time monitoring using the softpanel are shown left.
SIMULATES DIFFERENT SOLAR CELL MATERIALS IV CHARACTERISTIC
The purpose of the PV inverter is to convert the dc voltage (from solar array) to the ac power (utility). The better a PV inverter can adapt to the various irradiation & temperature conditions of sun, the more power that can be fed into the utility grid over time. So, the MPPT performance is a very important factor for PV generation system. The model 62000H-S Series are capable of simulating different types of standard crystalline, multi-crystalline and thin-film fill factor* parameters to verify the MPPT tracking algorithm mechanism and efficiency.
*Fill Factor = (Imp*Vmp)/(Isc*Voc)
STATIC MPPT EFFICIENCY TESTING
The 62150H-600S DC power supply with solar array simulation can program the I-V curve through SAS mode and table mode via front panel or softpanel easily and up to 100 I-V curves can be stored in the unit. The user can recall the I-V curve from 62150H-600S afterwards for testing and monitoring the MPPT performance of PV inverter with the real-time tracking feature. The softpanel allows the user to set the duration for static MPPT efficiency testing. Each curve test time should be set at between 60s-600s for best MPPT efficiency performance analysis.
DYNAMIC MPPT EFFICIENCY TESTING
The latest test standards EN50530, CGC/GF004 & Sandia have provided a procedure for testing patterns of the dynamic MPPT efficiency of inverters, those standards can accelerate the MPP tracking algorithm mechanism to the optimal for PV inverter manufactures. The advanced Dynamic MPPT Test function complies with EN50530, CGC/GF004, Sandia test regulations and can be controlled via the graphical softpanel by selecting CGC/GF004 or Sandia or EN50530 I-V mathematical expressions and test items. This function simulates the irradiation intensity and temperature change of the I-Vcurve under actual weather variations to test the PV inverter’s dynamic MPPT performance. The GUI will calculate the MPPT performance for analysis after running the test. A test data recording function is integrated into the software where users can edit and control the test parameters to be recorded such as voltage, current, power, watt and MPPT performance along with the sampling interval (1 - 10,000s) and total time length to facilitate the analysis and validation of the PV inverter.
SHADOW I-V CURVE SIMULATION
It has easy-to-use software to simulate the shadowed I-V curve and its dynamic change as the figure shown aside. The user can select the PV Module from the database or create individual PV module parameters for storage; and then set the amount of PV string to form a PV Array in series or parallel. Next, the user can set the irradiation, temperature, moving direction and time of dynamic shadowed change for PV Module that can simulate the cloud cover change or make Shadow I-V curve simulation for other shadow such as under the trees or the buildings. Each I-V curve is formed with maximum 4096 data points of voltage and current.
EVALUATING THE PV INVERTER'S CONVERSION EFFICIENCY *
The photovoltaic I-V curve model of Sandia Lab and EN50530's built in the softpanel allows the user to input the maximum dc input power (Pmax), I-V Fill Factor, Vmin, Vnom and Vmax desired to test the PV Inverter. Click the maximum power percentage value (5%, 10%, 20%, 25%, 30%, 50%, 75%, 100%) desired directly and , the softpanel will produce the tested solar cell I-V curve automatically. Next, download it to the standalone unit to start simulating the I-V curve for the PV Inverter to test the conversion efficiency. *Required an extra power meter.
REAL WORLD WEATHER SIMULATION
The real world weather simulation function allows the user to import real conditions of irradiation and temperature profiles of a whole day from excel file to Softpanel, in order to simulate the irradiation intensity and temperature level from early morning to nightfall. It can also set the interval time resolution to 1s for I-V curve update rate and enable the user to perform MPPT tracking tests under the simulation of actual weather environments.
AUTO RUN FUNCTION OF STATIC & DYNAMIC MPPT TESTING
In order to easily test the static & dynamic MPPT performance of standard EN50530 & Sandia for PV inverter, the SoftPanel has an auto run function, which the user only has to set the Vmin, Vnom, Vmax, Pmax, Stabilization time &Testing period time parameter and testing items of EN50530 & Sandia, then the softpanel can run tests automatically and generate reports after finished.
The softpanel also provides data recording capabilities, which include: voltage, current, power, energy and MPPT efficiency and the corresponding parameter sampling time (1s~10000s) for the recording process. The report can be utilized for R&D design characterization verification, QA verification and production quality control.
MASTER / SLAVE PARALLEL OPERATION UP TO 150KW
When high power is required, it is common to connect two or more power supplies in parallel. The 62000H series supplies have a smart master / slave control mode making the parallel operation fast and simple. In this mode, the master scales values and downloads data to slave units with a high speed sync signal process and automatic current sharing control.