Supply Power Distribution Among Multiple Infeed
Modules
When there is more than one infeed module, the
user has the option to specify if the total infeed power
is:
1. Divided equally among all
infeed modules
Example
If the total required supply power,
PTotal = 9kW and there are n = 3 infeed
modules
Then
the continuous power through each infeed module
is:
P1 =
P2 = P3 = PTotal / n = 9 / 3 =
3kW
2. Divided proportionally to
each infeed module’s continuous power rating
Example
If the total required supply power,
PTotal = 9kW, P1Rating = 10kW, P2Rating = 5kW and P3Rating
= 5kW
Then
the continuous power through each bleeder is:
P1 =
PTotal x P1Rating / (P1Rating +
P2Rating + P3Rating) = 9 x 10 / (10 + 5 + 5)
= 4.5kW
P2 =
PTotal x P2Rating / (P1Rating +
P2Rating + P3Rating) = 9 x 5 / (10 + 5 + 5) =
2.25kW
P2 =
PTotal x P3Rating / (P1Rating +
P2Rating + P3Rating) = 9 x 5 / (10 + 5 + 5) =
2.25kW
Bleeder Power Distribution Among Multiple
Bleeders
When there is more than one bleeder, the user
has the option to specify if the total bleeder power
is:
1. Divided equally among all
bleeders
Example
If the total required braking power,
PTotal = 1000W and there are n = 2
bleeders
Then
the continuous power through each bleeder is:
P1 =
P2 = PTotal / n = 1000 / 2 =
500W
2. Divided proportionally to each
bleeder’s continuous power rating
Example
If the total required braking power,
PTotal = 1000W, P1Rating = 250W and
P2Rating = 1000W
Then
the continuous power through each bleeder is:
P1 =
PTotal x P1Rating / (P1Rating +
P2Rating) = 1000 x 250 / (250 + 1000) =
200W
P2 =
PTotal x P2Rating / (P1Rating +
P2Rating) = 1000 x 1000 / (250 + 1000) =
800W
3. Proportional to resistor current.
Ie. All choppers are synchronized such that they engage and
disengage simultaneously.
Example
If the total required braking power,
PTotal = 1000W, R1 = 50 Ohms, R2 =
10 Ohms, and R3 = 8 Ohms
Then the continuous power through each bleeder
is:
P1 = PTotal x
1/R1 / (1/R1 + 1/R2 +
1/R3) = 1000 x 1/50 / (1/50 + 1/10 + 1/8) =
82W
P2 = PTotal x
1/R2 / (1/R1 + 1/R2 +
1/R3) = 1000 x 1/10 / (1/50 + 1/10 + 1/8) =
408W
P3 = PTotal x
1/R3 / (1/R1 + 1/R2 +
1/R3) = 1000 x 1/8 / (1/50 + 1/10 + 1/8) =
510W
