New deep learning tech for PV inverter fault diagnosis
A team of scientists in the United States has combined both spatial and temporal attention mechanisms to develop a new approach for PV inverter fault detection. Training the new method on a dataset created in MATLAB/Simulink, the group has compared it to a series of other data-driven and statistical-based methods and has found accuracy reached 97.35%.
Sungrow debuts 2.5 kW microinverter
The Chinese company said its new microinverter supports four independent MPPT inputs with DC input currents up to 18 A.
Skyworth launches new residential inverters
The Chinese electronics manufacturer said its new single-phase inverters have a maximum efficiency of 97.9% and a European efficiency rating of 97.2%.
Novel MPPT technique for EV charging combined with PV, fuel cells
Scientists in India have designed a system that uses PV panels, a proton-exchange membrane fuel cell, battery storage, and a supercapacitor. It also relies on an adaptive neuro-fuzzy inference system-based MPPT that reportedly achieves an efficiency of 98.7%.
MaxVolt launches smart inverter with inbuilt lithium battery
The Indian battery manufacturer has launched wall-mountable, high-efficiency inverters with inbuilt lithium battery for residential and commercial solar applications.
How long do residential solar inverters last?
Multiple factors affect the productive lifespan of a residential solar system. In Part 2 of our series, we look at solar inverters.
Sinovoltaics releases latest PV inverter manufacturer ranking
The quality assurance firm updated its inverter manufacturer financial stability ranking with APSystems (Yuneng Technology), Sinexcel, and Eaton in the top three spots.
Novel MPPT method combines APO, model-predictive control
An international research team has tested a hybrid control technique combining adapted perturb and observe (APO) with model-predictive control to address complex partial shading in solar arrays. The method, validated through simulation and physical experiments, reportedly outperforms existing approaches.
Cooling PV inverters with skived fin heat sink
Researchers in Turkey tested a novel heat sink design to cool insulated gate bipolar transistor (IGBT) arrays in solar inverters. They found that it reduced module temperatures by more than 6 C in lab experiments.
Novel switched capacitor boosting inverter for PV usage
Researchers have designed a new switched-capacitor-based multilevel inverter topology with nine switches. They have tested it in simulations and in hardware-in-the-loop tests. Efficiency reached up to 96.5%.
