800kVA UPS Topology & Load Sharing Control Algorithm
Test result (1+1 multi-module system)
CH4-System Voltage CH3-MOD#1
Nonload
THDu=0.39%/0.36%/0.35%
Circulating current=4.44A
100kVA rectifier load (Acf=3)
THDu=1.62%/1.59%/1.56%
Current Unbalance Degree =0.72%
Current CH2-MOD#2 Current
100% resistive load
THDu=0.45%/0.50%/0.37%
Current Unbalance Degree =1.53%
100% standard rectifier
THDu=1.34%/1.20%/1.31%
Current Unbalance Degree =1.12%


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