Understanding PID: Improving the performance of large PV systems

By Rubina Singh, Member of the Technical Staff in the Photovoltaic Technologies Group, Fraunhofer CSE; Dr Cordula Schmid, PV Scientist, Fraunhofer CSE; Dr Jacqueline Ashmore, Energy Technology Program Manager, Fraunhofer CSE

Performance | Potential-induced degradation (PID) has emerged as an issue of concern in the last decade because of the increase in the deployment of utility-scale high-voltage PV systems. Rubina Singh, Cordula Schmid and Jacqueline Ashmore of the Fraunhofer Center for Sustainable Energy Systems CSE present an overview of the mechanisms for PID and the impact of degradation, as well as the factors that contribute to its occurrence. They also discuss techniques for the detection, mitigation and predictive testing of PID.

Understanding PID: Improving the performance of large PV systems

By Rubina Singh, PV engineer at the Fraunhofer CSE; Dr Cordula Schmid, PV scientist at the Fraunhofer CSE PV; Dr Jacqueline Ashmore, Engineering Programme Manager at Fraunhofer CSE,

Performance | Potential-induced degradation (PID) has emerged as an issue of concern in the last decade because of the increase in the deployment of utility-scale high-voltage PV systems. Rubina Singh, Cordula Schmid and Jacqueline Ashmore of the Fraunhofer Center for Sustainable Energy Systems CSE present an overview of the mechanisms for PID and the impact of degradation, as well as the factors that contribute to its occurrence. They also discuss techniques for the detection, mitigation and predictive testing of PID.

Distributed versus central architecture in solar arrays

By Alvaro Zanon

New inverter technologies offer installers the choice of central of distributed systems for PV arrays. Deciding which system is the most optimal to use isn’t always based on the size of a solar system, writes Alvaro Zanon.

The next-generation utility-scale PV plant

By Mahesh Morjaria; Kevin Collins; Michael Stavish; Greg Ball

A next-generation PV plant architecture based on increasing direct current system voltage from 1,000VDC to 1,500VDC holds the promise of a more cost-effective and productive utility-scale plant due to lower installation and maintenance costs. Mahesh Morjaria, Kevin Collins and Michael Stavish of First Solar and Greg Ball of DNV-KEMA Renewables explore some of the challenges associated with the development of the technology and the efforts to address some of those challenges.

A lasting bond

By Michael Niederfuehr

PV modules are commonly installed with mechanical fixings. But as installers look to drive down system costs, structural bonding is emerging as a reliable and cost-effective alternative, writes Michael Niederfuehr.