Automatic inverter for mains charging+power failure? Detailed explanation of a complete backup power supply scheme

In industrial workshops, communication rooms and commercial shops, which require high continuity of power supply, the losses caused by sudden 

power failure are often far beyond imagination. Many users' thinking of dealing with power failure is still stuck in "connecting an inverter to the 

battery". However, in actual use, it is found that either the equipment is shut down due to untimely switching, or the battery charging management 

is chaotic, which shortens the service life. The truly reliable standby power supply can never be completed by a single device, but a complete system 

consisting of four units: charging, energy storage, inverter and switching.

The reason why the inverter alone can't achieve the ideal effect lies in two short boards. First, there is no automatic switching ability. After the mains 

power is cut off, it needs manual switching, and the gap of several minutes in the middle is enough to stop the precision equipment and interrupt the 

production. Second, the lack of professional charging management, direct battery connection is prone to overcharge and undercharge problems, which 

greatly shortens the service life of the battery and increases the later maintenance cost. In order to realize automatic charging when the commercial 

power is normal and seamless inverter power supply after the commercial power is cut off, a complete system architecture must be matched.

A standard industrial standby power supply system consists of four core parts. The first is the charging unit, that is, the high-frequency switching power 

supply. When the commercial power is normal, it converts alternating current into stable direct current, which intelligently floats and charges the battery 

pack, accurately controls the charging voltage and current, avoids overcharge and overdischarge, and effectively prolongs the service life of the battery. 

Baoweite high-frequency switching power supply has excellent conversion efficiency and stable charging characteristics, and is suitable for all kinds of 

lead-acid and lithium-ion energy storage systems.

Secondly, the energy storage battery, as the storage carrier of electric energy, can be flexibly configured according to the demand of standby time, which 

is the energy reserve of the whole system.

The core power conversion unit is an industrial pure sine wave inverter, which converts the direct current output by the battery into pure and stable 

alternating current to supply power to the back-end load. Baoweite industrial inverter outputs pure sine wave with small harmonic distortion, which is suitable 

for various sensitive loads such as motors and precision instruments, and will not produce electromagnetic interference. The conversion efficiency is in the 

forefront of the industry, and the long-term operation energy consumption is lower.

The most critical switching unit is STS static transfer switch, which monitors the voltage state of the mains in real time, and can automatically switch to the 

inverter power supply circuit in milliseconds once it detects power failure, under-voltage and over-voltage, and the load end is completely unaware during the 

whole process, thus truly realizing uninterrupted power supply. Baoweite STS static transfer switch adopts semiconductor contactless architecture, which has no 

mechanical wear and arc, supports automatic and manual dual-mode switching, and comes standard with multiple circuit protection. It is the reliable core of 

dual power supply system.

According to different scenarios, this scheme can flexibly adjust the configuration. Small shops and office scenes can choose low-power integrated inverter 

charging machine, which is compact and easy to install; The communication base station and small computer room recommend the standard rack combination 

of inverter and STS, which is convenient to deploy and simple to maintain; Industrial production lines and large-scale sites can choose integrated power supply 

cabinets, which integrate rectification, inverter, switching and power distribution, complete debugging before leaving the factory, and can be used after on-site 

power connection.

There are also several core principles when selecting models. It is suggested to reserve more than 20% margin in power to avoid long-term full-load operation; 

The standby time is matched with the battery capacity according to the actual business requirements, so it is not necessary to blindly pursue large capacity; In 

harsh environment, equipment with corresponding protection level shall be selected first to ensure long-term stable operation.

Generally speaking, reliable standby power supply is a systematic project, from charging management to energy storage inverter to high-speed switching, every 

link is stable and reliable, so as to truly hold the power supply bottom line in case of power failure. Baoweite's full range of power products can cover all kinds of 

standby power supply needs from small power to high power, support customized complete sets of solutions on demand, and provide stable uninterrupted power 

supply guarantee for various scenarios.

If you need type selection and transformation, you can consult Baoweite for the scheme. Thank you for browsing. You can collect official website of 

Shenzhen Baoweite Power Supply Co., Ltd.