Working Principle; Working Modes; Normal Mode - Huawei UPS5000-H-400 kVA User Manual

UPS5000-H-(400 kVA-800 kVA)
User Manual (100 kVA Power Module)

2.4 Working Principle

The UPS is an online product. It uses modular design, which facilitates
maintenance and capacity expansion. The UPS uses the DSP technology for
intelligent control. The power module consists of a rectifier, inverter, and DC/DC
converter. The UPS converts inputs into pure high-quality sine wave outputs by
using the high-frequency switching technology.
Figure 2-4 Conceptual diagram

2.5 Working Modes

2.5.1 Normal Mode

In normal mode, the rectifier converts AC power into DC power. Then the inverter
converts DC power into AC output. At the same time, the rectifier charges
batteries over a charger. The two conversions ensure high-precision and high-
quality output voltages, protecting loads from interferences such as input
harmonics, glitches, and voltage transients.
Issue 02 (2021-04-22) Copyright © Huawei Technologies Co., Ltd.
2 Product Overview
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