GE Industrial Solutions Galaxy Pulsar Edge - Manual (Page 91)

Galaxy Pulsar Edge Power System Controller
Issue 3 October 2011
91
Enable Slope Thermal
Compensation When Enabled it allows the controller to automatically adjust or
compensate the system output voltage based upon the highest battery
temperature monitored by the controller. This feature must be enabled
in order to use High and or Low Temperature compensation. Factory
default is disabled.
Nominal Temperature The nominal temperature is the battery temperature which there is no
battery voltage compensation due to temperature. Slope Thermal
Compensation will be active if the feature is enabled for temperatures
above or below this temperature threshold. The nominal battery
temperature range is from 15 to 30°C with a factory default setting of
25°C.
Upper Temperature
Limit The Upper Temperature Thermal Compensation Limit is the upper
temperature thermal limit at which high temperature thermal
compensation is stopped and the DC voltage is no longer decreased
according to the configured linear slope rate. This temperature threshold
limit can be set from 30°C to 55°C with a factory default setting of
55°C.
Step Temperature The High Temperature Voltage Step Down Temperature threshold is
the temperature at which the system controller will adjust the rectifiers
to set the DC bus voltage down by another .17V per cell. This battery
step down temperature can be set from 45°C to 85°C. A 10
o
C hysteresis
is built into this feature. The factory default setting is 75°C.
Upper Temperature
Slope The high or upper temperature decrease rate establishes the linear slope
rate that the controller utilizes to decrease the system DC voltage from
the configured nominal temperature value to the High Temperature
Compensation Limit. The high temperature slope setting (rate of
decrease) can be set from -1mV/
o
C per cell to -10mV/
o
C per cell in -
.1mV/ o C per cell increments with a factory default of -3mV/ o C per cell.
Enable Low
Temperature
Compensation Allows the controller to automatically perform Low Temperature
Compensation by adjusting or compensating the system output voltage
based upon the highest battery temperature monitored by the controller
independently from High Temperature compensation. Note: the general