Difference between Power Frequency UPS Power Supply and High Frequency UPS Power Supply

The industrial frequency UPS power supply is a power supply device. Its main function is to provide a stable power supply when the power grid is out of power or the voltage fluctuates. The industrial frequency UPS power supply converts electrical energy into chemical energy and stores it when charging. When a power grid failure occurs, the stored energy can be converted into electrical energy through the inverter to continue to supply the load.

A. The main functions of the industrial frequency UPS power supply are as follows:

1. Maintaining the continuity of power:When the power grid is out of power, the industrial frequency UPS power supply can provide stable power to the load within the switching time to ensure that the load operates uninterruptedly. This is very important for some key equipment, such as data centers, telecommunications equipment, industrial control systems, etc., because if the power outage time is too long, it may cause data loss, equipment failure and even life safety risks.

2. Stable current and voltage:The industrial frequency UPS power supply can provide stable current and voltage to the load through the built-in voltage stabilizer and voltage sine wave inverter. This is very important for some equipment with high requirements for power quality, such as medical equipment, precision manufacturing equipment, etc., because voltage deviation or fluctuation may cause equipment failure or product quality degradation.

3. Filtering and eliminating interference: The power frequency UPS power supply has a built-in filter that can filter out the power noise and interference in the power grid, making the power supply purer and more stable. This is important for some equipment that has high requirements for power quality, such as laboratory instruments, traffic signal equipment, etc., because power noise and interference may affect the measurement accuracy of the equipment or cause communication interruption.

4. Provide power capacity reserve: The power frequency UPS power supply usually has a certain energy storage capacity, which stores electric energy through charging, and can continue to supply power when the power grid is out of power. This is very important for some equipment that needs to respond to power grid failures in a short time, such as medical equipment, financial trading systems, etc., because it can avoid the interruption of important affairs in a short time.

B. The difference between power frequency UPS power supply and high frequency UPS power supply:

Power frequency UPS power supply and high frequency UPS power supply are two main UPS power supply technologies, which have some differences in working principle, efficiency and scope of application. The following will introduce the differences and characteristics of these two types of UPS power supplies in detail.

1. Difference in working principle:

The working frequency of the power frequency UPS power supply is synchronized with the power grid, generally 50Hz or 60Hz. When the power grid is powered normally, the industrial frequency UPS power supply will use part of the electric energy to power the load, and will also convert the electric energy into chemical energy through the rectifier for storage. When the power grid is out of power, the industrial frequency UPS power supply will convert the stored chemical energy back to electric energy through the inverter and continue to power the load.

The operating frequency of the high-frequency UPS power supply is much higher than the grid frequency, generally between 10kHz and 100kHz. The high-frequency UPS power supply first converts the electric energy into DC power through the rectifier, and then converts the DC power into AC power for the load through the high-frequency inverter. Compared with the industrial frequency UPS power supply, the high-frequency UPS power supply is more flexible in energy conversion and voltage adjustment.

2. Efficiency difference:

The high-frequency UPS power supply has higher efficiency than the industrial frequency UPS power supply. Because the high-frequency UPS power supply uses a high-frequency inverter, its energy conversion efficiency is higher, and it can provide higher power density and better power quality. However, the industrial frequency UPS power supply has power loss during the energy conversion process and has relatively low efficiency.

3. Difference in scope of application:

The industrial frequency UPS power supply is suitable for application scenarios with higher power and longer backup time, such as power, industry and other fields. Since the energy conversion of the power frequency UPS power supply is relatively slow, it is suitable for occasions that require a long backup time but not high response time.

High-frequency UPS power supply is suitable for application scenarios with lower power and shorter backup time, such as commercial and office fields. Since high-frequency UPS power supply can respond quickly to power grid failures, it is superior to power frequency UPS power supply in response time and stability.

In summary, there are certain differences between power frequency UPS power supply and high-frequency UPS power supply in working principle, efficiency and scope of application. When choosing a UPS power supply, enterprises or individuals should choose the appropriate type according to actual needs and budget.