SMA inverters featuring integrated yield optimization outperform module optimizers
04/16/20

SMA inverters featuring integrated yield optimisation outperform module optimisers

Module optimiser or inverter with integrated yield optimisation? This is the question that solar power professionals ask themselves before installing a PV system – especially when it comes to shading. A study by the University of Southern Denmark (SDU) now has the answer. It shows that in almost all applications, a PV system with modern string inverters can achieve higher yields than a system with conventional module optimisers. The lower number of electric components in the PV system also minimises error susceptibility. Installation time and costs are reduced and maintenance work is easier.

“When we develop our inverters, we aim for fully integrated functions from the outset. SMA ShadeFix is a digital, integrated software solution that comprehensively optimises energy yield in PV systems. It outperforms conventional hardware-based methods of optimising yield in PV systems,” said Nick Morbach, Executive Vice-President of the Home and Business Solutions business unit at SMA. “The study by the SDU provides the evidence that we are on the right track. Innovative inverters from SMA have all the functions that our customers need and ensure the highest yields in PV systems. No additional components are needed, even for shaded modules. This reduces the number of electronic components used by a factor of 30 compared with a system featuring module optimisers. This has an extremely positive effect on the reliability and safety of the PV system and on the environment.”

SMA string inverters are developed to deliver highly efficient yield optimisation. This is why SMA has consistently enhanced MPP tracking (orientation toward the PV module’s optimum power). The SMA ShadeFix software ensures that the global maximum performance of each PV module string is reliably detected and the available energy of the modules is utilised as effectively as possible at all times.

Only in PV systems with heavy shading could better values be achieved by selectively using module optimisers, according to Associate Professor Wulf-Toke Franke of the SDU. However, he also said that error susceptibility increased in PV systems with module optimisers. More system components mean more connectors, increasing the risk of system failures and fires. On the whole, the study (The Impact of Optimisers for PV Modules) thereby contradicts general statements about additional energy yields gained through the use of optimisers. It finds only very few scenarios where the use of optimisers improves system performance.

All information about the digital software solution SMA ShadeFix can be found here.


About SMA
As a leading global specialist in photovoltaic system technology, the SMA Group is setting the standards today for the decentralised and renewable energy supply of tomorrow. SMA’s portfolio contains a wide range of efficient PV inverters, holistic system solutions for PV systems of all power classes, intelligent energy management systems and battery-storage solutions as well as complete solutions for PV diesel hybrid applications. Digital energy services as well as extensive services up to and including operation and maintenance services for PV power plants round off SMA’s range. SMA inverters with a total output of around 85 gigawatts have been installed in more than 190 countries worldwide. SMA’s multi-award-winning technology is protected by more than 1,500 patents and utility models. Since 2008, the Group’s parent company, SMA Solar Technology AG, has been listed on the Prime Standard of the Frankfurt Stock Exchange (S92) and is listed in the SDAX index.


SMA Solar Technology AG
Sonnenallee 1
34266 Niestetal
Germany

Head of Corporate Communications:
Anja Jasper
Tel. +49 561 9522-2805
Presse@SMA.de

Press Contact:
Susanne Henkel
Manager Corporate Press
Tel. +49 561 9522-1124
Presse@SMA.de


Disclaimer:
This press release serves only as information and does not constitute an offer or invitation to subscribe for, acquire, hold or sell any securities of SMA Solar Technology AG (the “Company”) or any present or future subsidiary of the Company (together with the Company, the “SMA Group”) nor should it form the basis of, or be relied upon in connection with, any contract to purchase or subscribe for any securities in the Company or any member of the SMA Group or commitment whatsoever. Securities may not be offered or sold in the United States of America absent registration or an exemption from registration under the U.S. Securities Act of 1933, as amended.

This press release can contain future-oriented statements. Future-oriented statements are statements which do not describe facts of the past. They also include statements about our assumptions and expectations. These statements are based on plans, estimations and forecasts which the Managing Board of SMA Solar Technology AG (SMA or company) has available at this time. Future-oriented statements are therefore only valid on the day on which they are made. Future-oriented statements by nature contain risks and elements of uncertainty. Various known and unknown risks, uncertainties and other factors can lead to considerable differences between the actual results, the financial position, the development or the performance of the corporation and the estimates given here. These factors include those which SMA has discussed in published reports. These reports are available on the SMA website at www.SMA.de. The company accepts no obligation whatsoever to update these future-oriented statements or to adjust them to future events or developments.

Contact Partners

Adele Zhang
Marketing Manager

T: +61 2 9491 4200
Marketing@SMA-Australia.com.au