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A Closer Look at State Of Charge (SOC) and State …
A Closer look at State of Charge (SOC) and State of health (SOH) estimation Techniques for batteries Martin Murnane Solar PV Systems, analog devices , Ghazel Chief Technology Officer, EBSYS Technology GroupIntroductionBattery stacks based on lithium-ion (Li-ion) cells are used in many applications such as hybrid electric vehicles (HEV), electric vehicles (EV), storage of renewable energy for use at a later time, and energy storage on the grid for various purposes such as grid stability, peak shaving, and renewable energy time shifting. In these applications, it is important to measure the State of Charge (SOC) of the cells, which is defined as the available capacity (in Ah) and expressed as a percentage of its rated capacity. The SOC parameter can be viewed as a thermodynamic quantity enabling one to assess the potential energy of a battery. It is also important to estimate the State of health (SOH) of a battery, which represents a measure of the battery s ability to store and deliver electrical energy, compared with a new battery.
A Closer Look at State of Charge (SOC) and State of Health (SOH) Estimation Techniques for Batteries Martin Murnane Solar PV Systems, Analog Devices…
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