However, the actual energy that can be extracted from the battery is often (particularly for lead acid batteries) significantly less than the rated capacity. Nearly all batteries, particularly for renewable energy applications, are rated in terms of their capacity. For example, if the DOD of a battery is given by the manufacturer as 25%, then only 25% of the battery capacity can be used by the load. The Depth of Discharge (DOD) of a battery determines the fraction of power that can be withdrawn from the battery. In many types of batteries, the full energy stored in the battery cannot be withdrawn (in other words, the battery cannot be fully discharged) without causing serious, and often irreparable damage to the battery. However, as the battery voltage depends on temperature as well as the state of charge of the battery, this measurement provides only a rough idea of battery state of charge. A common way to measure the BSOC is to measure the voltage of the battery and compare this to the voltage of a fully charged battery. For example, for a battery at 80% SOC and with a 500 Ah capacity, the energy stored in the battery is 400 Ah. The BSOC is defined as the fraction of the total energy or battery capacity that has been used over the total available from the battery.īattery state of charge (BSOC or SOC) gives the ratio of the amount of energy presently stored in the battery to the nominal rated capacity. Battery State of Charge (BSOC)Ī key parameter of a battery in use in a PV system is the battery state of charge (BSOC). All battery parameters are affected by battery charging and recharging cycle. The key function of a battery in a PV system is to provide power when other generating sourced are unavailable, and hence batteries in PV systems will experience continual charging and discharging cycles.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |