New hybrid battery system

The German company ASD  have [inlinetweet prefix=”” tweeter=”” suffix=””]a new hybrid battery, combining the strengths of stand-alone and grid-tie storage systems[/inlinetweet]. They say the new battery significantly raises a household’s degree of self-sufficiency, frequently to over 90 percent. It is also cheap to produce and supply, thanks to the small number of components, typically costing 20 percent to 30 percent less than other lithium-ion batteries on the market.

“We are already seeing enormous demand for our new battery system” said Wolfram Walter, Managing Director of ASD. “It combines the advantages of both stand-alone and grid-tie storage systems in one device – which is unprecedented in the market. By introducing our hybrid technology, we took a huge step towards making battery systems more efficient, and above all more cost-effective.”

Homeowners have previously had to choose between grid-tied and stand-alone storage systems. Houses with grid-connected systems draw power from the grid almost continuously, even when their batteries are fully charged. Stand-alone storage systems, on the other hand, disconnect the house completely from the public grid as soon as sufficient power is stored and then supply the home with power produced on site. Unfortunately, these systems have a big disadvantage in that if the battery no longer furnishes enough power to supply all the appliances in the home, the storage system is shut down and the house draws all of its electricity from the grid again. Conventional stand-alone battery systems therefore only allow either fully battery-based or grid operation, but not both at the same time.

The hybrid battery system combines the operating principles and advantages of both technologies it works like a stand-alone system and disconnects the house from the grid for as long as its batteries are able to furnish sufficient power. The house thus needs no further power from external supplies and operates autonomously. At times when the battery capacity is insufficient, the system automatically procures the additional quantity of energy required from the power grid. By design, the system therefore combines both energy sources and thus utilizes the maximum amount of battery power directly on site. This flow of current is regulated via a computer-controlled filter developed by ASD for the hybrid battery.

The operating principle of ASD’s hybrid battery significantly increases a household’s degree of self-sufficiency compared to that achieved with existing systems, frequently topping 80%. It takes less than a millisecond to switch between the two operating modes, so the changeovers are detected neither by humans nor the appliances in a system.

The battery is suitable for both AC and DC coupling. This enables more flexible planning than previous storage types, which are specifically designed for either AC or DC operation. The battery can be charged by photovoltaic installations, CHP plants and small wind powered generators alike.

For morel information: ASD Sunstorage

Hugh Piggotts new book

Hugh has just published a new book
Buy it from Smashwrods

A very “hands-on” guide to every step in the process of building a 2 metre diameter wind turbine for battery charging. The turbine will produce 800kWh of energy on a site with 5 m/s mean wind speed. It uses more durable ferrite magnets for longer service life. The ebook is packed with colour photos and diagrams to clarify the text.

We built one of these turbines on our workshop in Leitrim in 2012 with Hugh and it impressed us with its output. See this post

Wind Turbine Building Workshop Braganca Portugal

We just finished a wind turbine building workshop near the village of Gimonde in the district of Braganca North Eastern Portugal.

Wind-Turbine-Workshop-Braganca-portugal-01Here is the crew in front of the 2.4m turbine

We built a 2.4m 12v turbine for the workshop organisers CoraNE


Wind-Turbine-Workshop-Braganca-portugal-02Making the coil winderWind-Turbine-Workshop-Braganca-portugal-03Winding coils

Wind-Turbine-Workshop-Braganca-portugal-05Wind-Turbine-Workshop-Braganca-portugal-06We worked in the veranda of the function room at an agri-tourism location, a working farm – Quinta das Covas, with holiday apartments, restaurant, bar, pool and a flock of sheepWind-Turbine-Workshop-Braganca-portugal-07Winding the coilsWind-Turbine-Workshop-Braganca-portugal-08Although this is Portugal the temperatures were about 2degrees and very chilly in the shade so we often carried the workbenches out into the sunshine to work. We used local pine wood for the blades, some knots however pretty good wood for carving.Wind-Turbine-Workshop-Braganca-portugal-09Rotor timeWind-Turbine-Workshop-Braganca-portugal-11Soldering the coilsWind-Turbine-Workshop-Braganca-portugal-12Getting the moulds readyWind-Turbine-Workshop-Braganca-portugal-10Cutting out the islandsWind-Turbine-Workshop-Braganca-portugal-13Wind-Turbine-Workshop-Braganca-portugal-14Action stations!Wind-Turbine-Workshop-Braganca-portugal-15Wind-Turbine-Workshop-Braganca-portugal-16Placing the coils in the mould, some resin is already in the mouldWind-Turbine-Workshop-Braganca-portugal-17Pouring the resinWind-Turbine-Workshop-Braganca-portugal-18The blades are getting nicely carved downWind-Turbine-Workshop-Braganca-portugal-19The paparazzi have found us again – RTP, one of Portugal’s four tv stations came to have a chat with the workshop participantsWind-Turbine-Workshop-Braganca-portugal-20Wind-Turbine-Workshop-Braganca-portugal-21You can see the flock of sheep grazing in the background, ironically near the garden bar-b-que. The sheep are accompanied by a shepherd all day as they wander around the groundsWind-Turbine-Workshop-Braganca-portugal-22Drilling the four holes for the hub in the blade assemblyWind-Turbine-Workshop-Braganca-portugal-23Nice tail, it’s an oak leaf, the emblem for CoraNE, the organisation who put the workshop together