Livoa LogoLivoa
LSU Supply && Motor or inverter is not having negative overload or power
Error
BridgeVoltage = 0
Liquid cooled
Motor or generator based on brake
Air cooled
set values
Supply Process


Mapping the input and validations

Dimension inverter

Check OverloadAndPowerType

Calculate BridgeVoltage and DCVoltage

Calculate TmaxDrop kdip and kdipMotor

Initial Fetch Data / filter from DB

Initialize supply dutycycle

Temperature calculation

Set catalogue and result values

Set Efficiency

Temperature Model flow


set direction

set icont and imax from dutycycle

set icont and imax unit from db

set temperature constants, timing & resistance values

Calculate powerLosses (Should be segregated) (currently in DLL's)

Calculate altitude derating (should be segregated)

Calculate Max temp (can be segregated)

Section-2

Filters: INU family, unitType, voltage (BrackingVoltage, pulse)
Is Liquid cooled
Set the derating value for TLC1, TLC1tn, Taur, KLC
Inverter (MD)
Braking && Aircoiled
Air cooled
Adjust Supply duty-cycle w.r.t generator duty-cycle
Calculate max temperature and resistive if either is greater than Tjmax then selection condition is temperature Then set margin for both
Calculate max temperature if ie, is greater than Tjmax then selection condition is temperature Then set margin
DSU: in DLL ISU: RRU These are different way for calculate powerloss
Input Specification Collection
Dimensioning Inverter
Initial calculation and checks - Check overload and power type
Map bridge voltage & calculate DC Voltage
Calculate TmaxDrop, Kdip, KdipMotor
Fetch Supplies from DB based on requirements
Initialize Supply duty cycle
Derating calculations (KLC, Taur, TLC1, Ka)
Power-loss calculation (Risk native method)
Calculate MaxTemp (Risk native method)
Temperature & Resistive model calculations
Final selection based on Tjmax & Imax
Efficiency calculation

Flow Chart

by YFZ

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