Whatever solar array simulator you use, the simulation must be as realistic as possible. For example, many PV inverters generate AC ripple on the DC connected to the photovoltaic array. For single‐phase inverters, the frequency of this ripple is twice the line frequency (100Hz). An increasing number of inverters (and virtually all micro‐inverters) accurately measure amplitude and phase of the ripple voltage and current to quickly track the MPP of the array.
This approach allows the inverter to track the MPP at a much higher speed when compared to conventional dithering techniques (also called perturb and observe). Faster tracking of the MPP results in a much higher overall efficiency in cloudy conditions, where the irradiance is constantly changing. It is likely that all solar inverters will use this approach in the near future, since end-users are very sensitive to the overall efficiency of their solar energy installations.
The simulator’s power supplies must not suppress this ripple as a function of their regulation loop. To perform the most effective test, the solar array simulator must be capable of reproducing the voltage / current behaviour of a solar array even in the presence of this ripple.
This is just one of the parameters that you must consider when selecting a solar array simulator. For more information on solar array simulators and what to look for when choosing them, contact Fuseco, your trusted partner in programmable power solutions.
More about the Elgar TerraSAS
The TerraSAS consists of programmable DC power supplies, a rack mounted controller, keyboard and LCD display with control software and GUI interface, output isolation, polarity reversing relays and a unique PV simulation engine that controls the power supply. This combination of hardware allows the TerraSAS to simulate most test protocols or combination of events that a solar installation will be subjected to. Power supplies are available in 1-15KW increments to simulate arrays up to 1MW.
Gauss Instruments……….Synonymous for highest quality.
GAUSS INSTRUMENTS develop and produce high quality instruments made in Germany that utilise cutting edge technology to fulfil the requirements of complex measurement tasks. Their goal is to provide an additional benefit by accelerating test and measurement procedures, continuously increasing performance parameters and providing high quality measurement results to their customers. Founded in 2007, the company is a spin-off from the Institute for High-Frequency Engineering of the Technische Universität München.
The research in the field of time domain measurements of electromagnetic interferences (EMI) started in the year 2000 and in the following years resulted in over 50 publications, transactions and journal articles being published on the topic of time-domain EMI measurements.
GAUSS INSTRUMENTS is the manufacturer of the award winning TDEMI Measurement System that uses ultra-high-speed analogue to digital converters and real-time digital signal processing systems to enable ultra-fast tests and measurements for electromagnetic compliance that fulfil the demand for measurements of today’s complex electronic equipment and applications.
The presentation of the first TDEMI Measurement System (TDEMI 1G) at the EMC Zurich 2007 Conference in Munich, was the beginning of what was to become a highly respected product range which covers a wide range of the demands of modern EMC testing.
Customised signal processing solutions are also offered based on their established hardware and software platforms. Using their expertise about real-time digital technology and microwave technologies they are developing systems that are unique in the field of test and measurement.
For further information, please contact Fuseco, your trusted partner in programmable power solutions.