What are the high-precision and high-reliability renewable energy storage systems?

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What are the high-precision and high-reliability renewable energy storage systems? [Copy link]

The centralized energy grid is a network of energy produced by generators, high-voltage transmission lines, and low-voltage transmission lines that transmit electricity over long distances to power the country's lifeblood and economy.

As the world relies more and more on electrification, aging grids are under tremendous pressure. Peak electricity demand during peak demand hours is becoming more common, as are power cuts in India and Africa due to insufficient capacity and infrastructure failures.

Energy storage systems (ESS) keep modern grids stable by capturing and storing renewable energy sources such as wind and solar. By alleviating the intermittency issues faced by renewable energy, energy storage technologies help remove barriers that have historically prevented the increased adoption of wind and solar resources. This allows power to be available to all users and applications at all times, including charging electric vehicles and powering buildings, hospitals and schools. ESS can not only support the grid during peak hours, but also maintain existing grid infrastructure without the risk of grid overload and collapse.

ESS effectively facilitates the integration of renewable resources in mainstream energy production.

Energy storage and ESS have become a global focus in recent years, driven by the expected penetration of electric vehicles (EVs) and other electrification technologies. ESS will support the growth of EVs while also serving as a major application for the second life of batteries.

Supporting sustainable energy use

ESS captures and stores energy provided primarily by distributed variable renewable energy sources, which is not only good for the environment, but also for populations in developed and underdeveloped countries where electrification is used to drive business and sustain life. Energy storage systems not only store energy when demand is low for use during peak loads, but also make it possible to operate future grids without investing trillions of dollars to extend transmission lines or build new fossil fuel power plants that pollute the atmosphere.

Powering the future with renewable energy

Renewable energy contributed 18.1% and 26% of the world's energy consumption and electricity generation in 2017 and 2018, respectively. Of this energy consumption, 7.5% came from traditional biomass, 4.2% from thermal energy (non-biomass), 1% from biofuels for transportation, 3.6% from hydropower, and 2% from wind, solar, biomass, geothermal, and ocean energy.

The demand for a sustainable energy future is driving more variable renewable energy to connect to the grid, which in turn is accelerating the adoption of energy storage technology to help maximize grid resilience. The energy storage market is forecast to grow rapidly in the coming decades, driven by the expected penetration of electric vehicles (EVs) and other electrification technologies. Over the next two decades, investment in new energy storage is expected to surge by $620 billion.

BMS accuracy is critical

“With ADI’s BMS technology, the improved accuracy can provide an additional 15% to 20% vehicle charging range and longer battery life,” said Conor Power. “Higher charge measurement accuracy can also translate into longer battery life. In large ESS systems that cost millions of dollars, the cost savings are significant.”

ADI's team of professional field application engineers (FAE) leverages its extensive hardware system expertise and industry-leading BMS technology to work closely with partners' software knowledge. ADI provides ESS partners with the LTC6813 to measure and monitor battery cells and provide precise voltage and current information. Mario Battello said: "The LTC6813 is a high-precision device on the market today, allowing our partners' engineers to use microcontrollers to calculate the battery's state of charge and health very accurately."

To determine the exact battery discharge rate and achieve longer EV range, greater BMS accuracy is needed. We need to know exactly how much charge is left (20%, 15% or 10%?) so we know how far we can go (50, 37 or 25 miles?). It is important to know how much to charge the battery and when to stop discharging, otherwise you will damage the battery performance or the battery itself. Conor Power said: "With higher measurement accuracy, the battery life of the electric vehicle will definitely be longer than that with less accurate measurement. The same principle applies to energy storage systems for residential or commercial use."

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