Inverters

Another big solar event has joined the list of those canceled because of Covid-19. The next edition of The Smarter E event will take place next year.

The solar plant was built with fixed structures on a 400-hectare water surface at a fishery in Anhui province. The project was the first unsubsidized plant approved by the National Development and Reform Commission (NDRC) in 2019 and is selling power at a price of RMB 0.3844 ($0.054) per kWh.

According to a Norwegian group of researchers, the reactive power capability of three-phase voltage source inverters can help to reduce problems caused by the intermittent nature of solar power on distribution networks. The scientists claim they are preferable to expensive grid infrastructure such as under-load tap changing transformers, step voltage regulators, and fixed and switchable capacitors. The group has developed a system model featuring a 7.63 kW PV array module, a three-phase voltage source inverter with 9.5 kVA of capacity, a boost converter, a three-phase dynamic load, and a utility grid.

A slump in demand would weigh more heavily on the storage industry than a temporary production shutdown and IHS Markit analysts say that is where the risk lies, rather than with a temporary shortage of battery cells. A similar prediction has been made for the PV market.

GlobalWafers, a Taiwanese wafer manufacturer, will add 150mm silicon carbide to its products, manufactured from bulk SiC crystals produced by GT Advanced Technologies, under a new multi-year agreement to “forge a new source of supply of silicon carbide wafers.”

The US National Renewable Energy Laboratory examined five-year data to observe the most common system failure points and how to prevent them. Researchers considered residential, commercial and utility scale plants and found interesting results. While failures cannot be avoided completely, a key takeaway was that close monitoring and timely repair can effectively mitigate the financial effects of failures.

A viral outbreak in the city of Wuhan, in China’s Hubei province, has become a nationwide health crisis with global implications. And with PV manufacturing concentrated in China, there are serious implications for all corners of the solar world, reports Vincent Shaw in Shanghai.

Optimizer manufacturer Alencon has published a paper outlining the technical challenges to replacing the largely obsolete and frequently failing 600 V central inverters used in older PV projects.

The OneBox, from Indian manufacturer Vision Mechatronics, consists of a lithium battery, hybrid inverter and solar charge controller to give a ‘hassle-free’ solution for electricity back-up during power outages. Solar rooftop owners are offered a grid feed feature to maximize net metering income from any excess power generated.

Italian inverter maker Fimer has completed its purchase of ABB’s manufacturing and R&D sites in Finland, India and Italy, along with 800 employees in 26 countries. Fimer said the combined business will ship more than 7 GW of inverters this year.