VP5000-DC/DC60, VP5000-DC/DC200-HL
Product description
Last edited 2019-02-08
by Sonja Scheunert
Filename
VP5000_DCDC60_200-HL_installation_manual_v1-4en.docx
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Figure 45: Derating characteristic curve at 750 V for VP5000-DC/DC200-HL
Characteristic curves for efficiency
3.11
The following characteristic curves show the typical efficiency at several selected operating points.
Please note that the specific values for your application may differ from those shown. These values
depend on many variables.
The following characteristic curves show operation as a boost converter. It is assumed that a
battery is connected on the output side [/-]. The efficiencies at different output voltages
[/-] and DC link voltages [DC+/-] are considered.
Notes on the characteristic curves
•
The losses depend on the DC link voltage [DC+/-], the output voltage, the output current, and
the temperature of the power semiconductors.
•
If the DC link voltage [DC+/-] and the current remain the same and the output voltage
increases, the power increases, the efficiency improves, and the losses remain almost the
same.
•
Large differences between the input and output voltage cause a poorer efficiency. The closer
the input and output voltages are to each other, the better the efficiency.
•
Large differences between the input and output voltage are more critical in the event of a load
shedding because they lead to higher voltage peaks. These voltage peaks can cause
interference at the connected devices.
