Inverters

Australian redox-flow battery specialist Redflow has upped the ante on its plans to expand into the US market, announcing that it has completed testing to pave the way for its battery energy storage system to be used in conjunction with hybrid inverters manufactured by US solar engineering company Sol-Ark.

High-power solar panels with outputs above 500 W accounted for more than 60% of all PV module imports to Brazil by volume in the January-March period.

The Enphase IQ8 Microinverter system has been certified to the new North American safety and grid interconnection standards for connecting solar inverters, energy storage systems, and distributed energy resources to the grid.

Studer Innotec, a Swiss power electronics specialist, has unveiled a 16 kW inverter for off-grid and on-grid applications. It features two maximum power point tracking inputs in an 8 kW plus 8 KW configuration.

APsystems has developed a new 97%-efficient microinverter with a power output of up to 2,000 VA. It says it is particularly suitable for PV systems with high-power solar modules.

The S5-EO1P(4-5)K-48 series off-grid PV inverter has an efficiency of 96.7% and supports parallel operation of up to 10 units, which allows for a system capacity of up to 50 kW. According to the manufacturer, the device is compatible with all top-tier brands of lithium-ion and lead-acid batteries.

Katek’s new StecaGrid Hybrid 10023_3 hybrid PV inverter has a nominal power of 10 kW, an efficiency of 98.1%, and a European efficiency rating of 97.9%.

US researchers have investigated how grid-forming inverters could help to resolve network synchronization issues. They have found that multi-loop devices could offer strong damping support in power systems with intermittent renewables.

Recurring power grid faults are testing solar inverter reactions, and have exposed issues that could seemingly be solved by improvements to commissioning, operations, and maintenance.

New research has categorized all existing fault detection and localization strategies for grid-connected PV inverters. The overview also provides a classification of various component failure modes and their potential causes in a tabular form.