PV Ch. 7

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Author:
cgore
ID:
162798
Filename:
PV Ch. 7
Updated:
2012-07-17 03:47:34
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PV
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Description:
Ch. 7 PV vocab
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  1. Charge Controller
    A device that regulates battery charge by controlling the charging voltage and/or current from a DC power source, such as a PV array
  2. Charge Acceptance
    The ratio of the increase in battery charge to the amount of charge applied to the battery
  3. Overcharge
    The ratio of applied charge to the resulting increase in battery charge. Can also refer to the condition of a fully charged battery continuing to receive a significant charging current
  4. Deficit Charge
    A charge cycle in which less charge is returned to a battery bank than what was withdrawn on discharge
  5. Overdischarge
    The condition of a battery state of charge declining to the point where it can no longer supply discharge current at a sufficient voltage without damaging the battery
  6. Interrupting-Type Charge Controller
    A charge controller that switches the charging current on and off for charge regulation
  7. Linear-Type Charge Controller
    A charge controller that limits the charging current in a linear or gradual manner with high-speed switching or linear control
  8. Shunt Charge Controller
    A charge controller that limits charging current to a battery system by short-circuiting the array
  9. Series Charge Controller
    A charge controller that limits charging current to a battery system by open-circuiting the array
  10. Maximum Power Point Tracking (MPPT) Charge Controller
    A charge controller that operates the array at its maximum power point under a range of operating conditions, as well as regulates battery charging
  11. Diversionary Charge Controller
    A charge controller that regulates charging current to a battery system by diverting excess power to an auxiliary load
  12. Diversion Load
     An auxiliary load that is not a critical system load, but is always availabe to utilize the full array power in a useful way to protect a battery from overcharge
  13. Hybrid System Controller
    A controller with advanced features for managing multiple energy sources
  14. Ampere-Hour Integrating Charge Controller
    A charge Controller that counts the total amount of charge (in ampere-hours) into and out of a battery and regulates charging current based on a preset amount of overcharge
  15. Charge Controller Setpoint
     A battery condition, commonly the voltage, at which a charge controller performs regulation or switching functions
  16. Voltage Regulation (VR) Setpoint
    The voltage that triggers the onset of battery charge regulation because it is the maximum voltage that a battery is allowed to reach under normal operating conditions
  17. Array Reconnect Voltage (ARV) Setpoint
     The voltage at which an interrupting-type charge controller reconnects the array to the battery and resumes charging
  18. Voltage Regulation Hysteresis (VRH)
    The voltage difference between the voltage regulation setpoint and the array reconnect voltage setpoint
  19. Low-Voltage Disconnect (LVD) Setpoint
    The voltage that triggers the disconnection of system loads to prevent battery overdischarge because it is the minimum voltage a battery is allowed to reach under normal operating conditions
  20. Load Reconnect Voltage (LRV) Setpoint
    The voltage at which a charge controller reconnects loads to the battery system
  21. Low-Voltage Disconnect Hysteresis (LVDH)
    The voltage difference between the low-voltage disconnect (LVD) and load reconnect voltage (LRV) setpoints
  22. Self-Regulating PV System
    A type of stand-alone PV system that uses no active control systems to protect the batter, except through careful design and component sizing

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