Working Principle - Huawei UPS5000-H User Manual

UPS5000-H-(1200 kVA-1600 kVA)
User Manual (100 kVA Power Modules)
Dual-Bus System
A dual-bus system consists of two independent UPS systems. Each UPS system
consists of one UPS or multiple UPSs connected in parallel. Of the two UPS
systems, one is the master system and the other is the slave system. The dual-bus
system is highly reliable and is suitable for loads with multiple input terminals.
You can install an optional static transfer switch (STS) to start a bus
synchronization controller (BSC) provided in standard configuration. The UPS
systems work in inverter mode or bypass mode.
Figure 2-3 Typical application scenario of a dual-bus system consisting of single
UPS systems

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.
Issue 05 (2021-10-13) Copyright © Huawei Technologies Co., Ltd.
2 Product Overview
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