IT systems are gradually moving towards centralized management, and UPS
power supplies will see six major development trends. With the development of
information technology, electronic technology, and control technology, various
advanced technologies have been widely used in the design, development and
production process of UPS. As a high-tech product developed in response to the
demand of the power market, lithium battery UPS power supply has attracted great
attention from enterprises. The application of protection systems will be more
in-depth. As IT systems gradually move toward centralized management, UPS
technology will see the following six major development trends.
1. Greening
The harmonic currents generated by various electrical equipment and power
supply devices seriously pollute the power grid. With the introduction of
various policies and regulations, the call for pollution-free green power supply
devices is getting louder and louder.
In addition to installing a high-efficiency input filter, the UPS should
also adopt power factor correction technology at the input end of the power
grid, which can not only eliminate the harmonic current generated by the
rectifier and filter circuit itself, but also compensate for the input power
factor. The rectifier uses IGBT technology, which can increase the input power
factor to close to 1, and the pollution to the power grid has been reduced to
the level of a resistive load.
2. Redundant parallel technology
Through the development of new application technology, multi-module
redundant parallel operation in the UPS can be realized without the need for
additional central control components. The load is evenly distributed. When a
problem occurs in a certain module, the load is automatically transferred and
hot-swappable for maintenance. , greatly improving the power supply reliability
of a single UPS.
In addition, the system composed of multiple UPS operates redundantly. If a
single UPS fails, it will be shut down immediately, and other UPS systems will
automatically bear the entire load without any impact on the load.
3. High frequency
The power switch of the first generation UPS is a thyristor, the second
generation is a high-power transistor or field effect transistor, and the third
generation is an IGBT (insulated gate bipolar transistor). The switching speed
of high-power transistors or field-effect transistors is an order of magnitude
higher than that of thyristors, and the current capacity and speed of IGBT power
devices are much larger and faster than that of high-power transistors or
field-effect transistors, which reduces the operating frequency of the power
conversion circuit. up to 50kHz.
The increase in the frequency of the conversion circuit greatly reduces the
inductance, capacitance, noise, and volume used for filtering, and greatly
improves UPS efficiency, dynamic response characteristics, and control
accuracy.
4. Intelligent
Through the analysis and synthesis of various types of information, the
intelligent system should not only complete the control function of the normal
operation of the corresponding parts of the UPS, but also complete the real-time
monitoring of the running UPS, analyze and process the important data
information in the circuit, and draw various conclusions from it. Whether some
circuits are working properly and other functions.
When a UPS failure occurs, it can conduct timely analysis based on the test
results, diagnose the fault location, and provide treatment methods; take
necessary emergency protection and control actions according to the needs of the
site in a timely manner to prevent the expansion of the impact of the failure;
complete the necessary It maintains itself and has the function of exchanging
information. It can input information to the computer or obtain information from
the networked machine at any time.
5. Digitization
UPS uses the latest digital signal controller (DSP) and digitized Hall
sensor devices to achieve 100% digital operation of the UPS system. A multiple
microprocessor redundant system is also used, using multiple microprocessors
with independent power supplies to control the rectifier, inverter and internal
static bypass, thereby improving the digitalization and reliability of the
system.
6. Integration
With the development of informatization, the application fields of power
supply protection continue to expand and the requirements continue to increase.
It is difficult for UPS to meet these needs alone. It must control the links
involved in the entire power system. UPS starts from the initial equipment
protection and system protection. Pure backup power technology has developed
into today's integrated applications of information protection, intelligent
management and overall computer room integration, and its connotation has
expanded to power generation, power distribution, conversion, uninterruptible
power supplies, computer rooms, power equipment, power cables, data cabling, and
environmental monitoring. And system management, etc., it is no longer UPS in
the original sense. UPS equipment is only the core component of the system.
Integrated integrated applications provide users with complete and
effective power application solutions. This expansion direction adapts to the
needs of information construction. However, in order to meet the changes in this
demand, for UPS manufacturers, especially domestic manufacturers, still There is
much work to be done.
The development of electronic technology and computer technology has not
only greatly improved the power performance of UPS, its network management can
realize remote monitoring, digital power control technology has enabled the
product to have customized functions, and the intelligent design has made it
highly intelligent. Devices that are monitorable, controllable and adaptive.
UPS power supply plays an increasingly important role in various fields and
is widely used in: information industry, IT industry, transportation, financial
industry, industrial equipment, communication base stations, data centers,
energy storage and other fields. The technological development level of UPS
power supply is also constantly improving.
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