Sometime last year, SMA suggested exponential growth was coming in the storage application segment. Earlier in 2018, they announced their new SMA Sunny Boy Storage (still listed as coming soon on the website) – and now it is shipping.

In general, the leakage currents detected by the transducer will have an AC and a DC component and each user application will implement a specific algorithm on the transducer output to determine when a leakage is ‘excessive´ and then take appropriate action. A particularly challenging case occurs when there is a large natural and variable AC leakage component (depending on ambient humidity, for example) through parasitic capacitances, and the extra leakage caused by a person touching the DC side must still be detected. The impedance presented by a person is largely resistive, and so, as shown in Figure 8, the extra current flowing makes almost no difference to the RMS value of the leakage current; the main effect is a change of phase.

Power analyzers are test instruments that are becoming increasingly important within the electrical and electronics industries as all aspects of power used by equipment large and small becomes a greater issue.

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Closed-loop transducers have an architecture which, due to the transformer effect, provide good speed, noise and linearity performance. Historically, the low offset requirements have been met using a fluxgate as the magnetically-sensitive element. However, many of LEM´s current transducers now achieve low offset (and low offset drift) thanks to design innovations in the CMOS ASIC used. The ASIC includes Hall cells and low offset amplifiers merged in a new patented architecture, resulting in sensors whose construction is simpler than that of the fluxgate families with similar performance.

“That has not been an issue because we just don’t export power in California,” Brennan says. “We use the solar during the day, batteries at night and grid as a backup.”

Do you know if Solar City panels can use this equipment, since I bought outright several of my panels and rebates paid for the rest.

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That being said, it actually sounded better than I expected. It can put out decent volume and while the bass is understandably a bit thin, music is perfectly listenable so long as you don’t try to crank it up. It won’t replace your home stereo, but for a compact portable that would be sitting on a table beside you, it does fine. And if you leave it attached to the battery base (and don’t use that battery to top up smartphones) it has enough power to run for 72 hours. Three days…

Inverters are the electronic heartbeat of a solar system, connecting solar arrays to the grid and increasingly, to battery storage. As utilities continue to shift rate structures in ways that often harm grid-tied residential solar customers, inverter manufacturers are working to make battery integration seamless.

The company has an extensive product portfolio, ranging from string inverters, directed at residential, commercial and industrial systems, up to central inverters, directed at large-scale plants rated at hundreds of megawatts. In fact, in 2018 Ingeteam supplied its PV inverters to eleven plants whose rated capacity is either equal to or greater than 100 MW. In this group of large-scale solar plants, particular mention should be made of the largest PV plant in Europe (500 MWp) and the largest in the world (1,177 MWp).