pack_stack[n].installed
▪
Flag indicating if stack
n
1
if the stack is present.
pack_stack[n].enabled
▪
Flag indicating if stack
n
. Set to
1
to actually use the stack.
pack_stack[n].bank_index
▪
The index of the bank where stack
n
is located. Set to
0
if only one bank is in use.
Stacks that are installed are considered physically present in the system. The Battery Control Panel
will attempt to connect to and communicate with the stacks using the corresponding
gbc_eth_bridge
configuration.
A stack must be enabled before the Battery Control Panel will aggregate that stack’s data into pack-
level view or connect the stack to the DC bus.
8.5. Control Settings
Nuvation Energy Battery Control Panel includes a pack connection routine that intelligently manages
connection and disconnection of all
stacks in a pack. The connection routine will guarantee no
stack is connected if its connection will cause excessive in-rush current due to voltage imbalances.
During the charging and discharging of the stacks, the routine will automatically connect stacks when
appropriate. It is guaranteed that if 1 stack is
, that stack can be connected. Configuration of
this routine is achieved through the following registers.
pack_control.enabled
▪
Set to
1
to enable automatic control of stack connection
▪
Set to
0
to require manual control of stack connection
pack_control.auto_connect
▪
Setting this to
1
will connect on boot. It will also re-connect after a fault condition has cleared.
▪
Setting this to
0
will require operator triggered connection on boot. It will also require operator
triggered connection after a fault condition has been cleared.
pack_control.stack_delay
▪
Set to the settling delay in microseconds. This prevents multiple stacks from connecting in
rapid succession.
pack_control.stack_nominal_resistance
▪
The nominal total ohmic resistance of a stack in milliohms. It is assumed all stacks have
equivalent resistance.
pack_control.max_connect_current
▪
The maximum allowable stack inrush current during connection in milliamps. Typically this
should be set below the smallest absolute fault threshold for stack current.
Nuvation Energy Battery Control Panel - Product Manual
Document ID: NE-PM-005
70
Rev 1.1, 2020-10-14
Curie Update 2
