Energy Efficiency Measurement of Wide Bandgap Based Power Supplies

This report discusses different measurement methods to evaluate the efficiency of WBG-based power supply solutions, including electrical and calorimetric methods, and compares the performance of Si-based and GaN-based chargers. The efficiency of chargers was measured at different load conditions, and it was observed that the maximum efficiency occurred generally at higher powers. GaN-based solutions outperformed […]

Analysis and Loss Measurements of WBG-Based Devices

Commercial power supplies with wide-bandgap (WBG) Technology promise enhanced efficiency. PECTA analyzes WBG-based devices, supported by Swiss research, focusing on measurement concepts, loss assessments, and a deep understanding of the WBG device benefits. The POWERlab at EPFL works on efficient WBG semiconductor technologies and develops accurate electrical measurement methods to provide insights into loss sources. […]

Application Readiness Map for Wide Bandgap (WBG) Semiconductors

The Power Electronic Conversion Technology Annex (PECTA) Application Readiness Map for Wide Bandgap (WBG) Semiconductors describes their expected market position through 2035. It is based on interviews with many experts and various roadmaps and could be used as a basis for deciding which power semiconductor technology to choose. This report presents an updated version and […]

Energy saving potential of WBG commercial power converters in different applications

This report explores the potential of wide bandgap (WBG) power semiconductor devices, such as SiC or GaN, in enhancing energy efficiency compared to traditional silicon-based systems. Estimating global energy savings, the research focuses on applications like data centers, photovoltaic inverters, low-voltage motor drives, electric vehicle charging stations, inverters for battery storage, and laptop chargers. Findings […]

Policy Brief – Energy Management Protocols

Summarises the EDNA Guide to Energy Management Protocols, which is a resource for policy makers. Gives an overview, description and categorisation of protocols, their relevance to energy management, and details of market uptake.

Wide Band Gap Technology: Energy and environmental related Life Cycle Assessment (LCA)

This report reflects the results of the work: Energy and environmental related Life Cycle Assessment (LCA) of PECTA, during the period 2020 to 2023. It explores the energy and material aspects and environmental impacts of selected applications incorporating WBG technology. The report introduces the main guiding research questions, presents the methodology for the analysis, and […]

Improving the Mp metric for evaluation of Flicker

TLM (temporal light modulation) related measurements and calculations have become a focus with new regulations by European Commission and other regulatory authorities setting limits for TLA (temporal light artefacts) for LED lighting products. Generally, the regulations rely on PstLM (IEC TR 61547-1-2020) for flicker and SVM (TR 63158-2018) for stroboscopic effects.  Due to the complexity […]

Understanding LED performance: Evidence-based approaches to supporting stakeholders of energy-efficient lighting programmes

The SSL Annex takes an evidence-based approach to evaluating LED product performance. Using comprehensive market data from product registries and other sources, the Annex developed recommendations on product performance and research into test methods that reduce the time and cost burden for government, industry and consumers.  This paper highlights several activities that exemplify this evidence-based […]

Detailed Characterisation for Smart Dynamic Lighting

Smart lighting is gaining ground with increased speed driven by market demands for enhanced comfort, greater energy efficiency and simulating the the natural rhythm of daylight. But how do smart lighting sources perform when the light is dimmed, and when the colour temperature is changed? Is there a need for better characterisation? This paper presents […]

4E Evaluation Guidebook

The 4E Evaluation Guidebook is intended to assist impact evaluations of equipment energy efficiency standards and labelling (EES&L) programmes. It explains the methodologies that are proven to deliver robust and credible evaluations within five key steps.

Measurement of temporal light modulation: improving calculation methods for stroboscopic effect visibility measure

The SSL Annex is conducting an Interlaboratory Comparison (IC 2022) on the measurement of temporal light modulation (TLM) from SSL products. In this context, uncertainty associated with SVM calculations must be minimised and remain consistent across a range of waveform measurement parameters (e.g., sampling frequency, duration) used in different systems. This presentation discusses two methods […]

Emerging Battery Technologies

This research study examines new battery technologies suited to powering small devices such as IoT, actuators and sensors, and portable devices such as mobile phones and laptops.

Round Robin of Converter Losses

This report summarises the results of the IEA 4E EMSA international Round Robin testing programme for converter losses, implemented in cooperation with IEC SC22G/WG18.

Smart Lighting – New Features Impacting Energy Consumption

Smart lamps and luminaires are common in today’s lighting market. Smart lighting provides an opportunity for the consumer to benefit from wireless control of lighting products, e.g. by dimming, colour tuning and scheduling. These functions can provide energy saving but they also require energy consumption to supply standby power and gateways.