Sample 2 - Power Flow Configuration

 

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, P_Total = 9kW and there are n = 3 infeed modules
Then the continuous power through each infeed module is:
     P₁ = P₂ = P₃ = P_Total / n = 9 / 3 = 3kW

  2. Divided proportionally to each infeed module’s continuous power rating

Example
If the total required supply power, P_Total = 9kW, P_1Rating = 10kW, P_2Rating = 5kW and P_3Rating  = 5kW
Then the continuous power through each bleeder is:
     P₁ = P_Total x P_1Rating / (P_1Rating + P_2Rating + P_3Rating) = 9 x 10 / (10 + 5 + 5) = 4.5kW
     P₂ = P_Total x P_2Rating / (P_1Rating + P_2Rating + P_3Rating) = 9 x 5 / (10 + 5 + 5) = 2.25kW
     P₂ = P_Total x P_3Rating / (P_1Rating + P_2Rating + P_3Rating) = 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, P_Total = 1000W and there are n = 2 bleeders
Then the continuous power through each bleeder is:
     P₁ = P₂ = P_Total / n = 1000 / 2 = 500W

  2. Divided proportionally to each bleeder’s continuous power rating

Example
If the total required braking power, P_Total = 1000W, P_1Rating = 250W and P_2Rating = 1000W
Then the continuous power through each bleeder is:
     P₁ = P_Total x P_1Rating / (P_1Rating + P_2Rating) = 1000 x 250 / (250 + 1000) = 200W
     P₂ = P_Total x P_2Rating / (P_1Rating + P_2Rating) = 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, P_Total = 1000W, R₁ = 50 Ohms, R₂ = 10 Ohms, and R₃ = 8 Ohms
Then the continuous power through each bleeder is:
     P₁ = P_Total x 1/R₁ / (1/R₁ + 1/R₂ + 1/R₃) = 1000 x 1/50 / (1/50 + 1/10 + 1/8) = 82W
     P₂ = P_Total x 1/R₂ / (1/R₁ + 1/R₂ + 1/R₃) = 1000 x 1/10 / (1/50 + 1/10 + 1/8) = 408W
     P₃ = P_Total x 1/R₃ / (1/R₁ + 1/R₂ + 1/R₃) = 1000 x 1/8 / (1/50 + 1/10 + 1/8) = 510W