
This research focuses on the discussion of PV grid-connected inverters under the complex distribution network environment, introduces in detail the domestic and international standards and requirements on grid-connected inverter grid adaptability, and then analyzes in depth the impacts of the access point voltage changes, access point frequency changes, and access point harmonic changes on the inverters.Can grid-connected PV inverters improve utility grid stability? [pdf]

The three-phase inverter uses insulated gate bipolar transistor (IGBT) switches which have advantages of high input impedance as the gate is insulated, has a rapid response ability, good thermal stability, simple driving circuit, good ability to withstand high voltage, snubber-less operation and controllability of switching behavior providing reliable short-circuit protection. [pdf]

Based on an evaluation of various aspects relating to energy storage systems in residential environments, the findings indicate that 1. energy storage systems are generally safe for residential use, 2. several safety features and regulations exist to mitigate risks, 3. proper installation and maintenance are crucial for ensuring safety, 4. user education plays a vital role in minimizing hazards. [pdf]

Commission Regulation (EU) 2025/2052 of 13 October 2025 laying down ecodesign requirements for external power supplies, wireless chargers, wireless charging pads, battery chargers for portable batteries of general use and USB Type-C cables, pursuant to Directive 2009/125/EC of the European Parliament and of the Council and repealing Commission Regulation (EU) 2019/1782 [pdf]
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