Super-capacitor standby power air conditioning system
By using supercapacitor electric air conditioning system in the data center air conditioning system and using a bidirectional inverter to achieve rapid power supply switching, the problems of UPS energy conversion loss and low power density in the existing technology are solved, and safety, stability and low Cost, high reliability air conditioning power system.
Patent Information
- Application Number
- CN202411713198.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-27
- Publication Date
- 2025-02-18
AI Technical Summary
When the existing data center air conditioning system is powered off in the power grid, the energy conversion of the UPS system will cause energy loss, the equipment will be overheated, and the system is priced and large, with high environmental requirements. The commonly used battery system has low power density, short life, and safety hazards. big.
The supercapacitor electric air conditioning system is adopted, and the supercapacitor is connected to the AC bus through a bidirectional inverter to realize charging during power supply in the power grid, and quickly switch power supply when the power grid is out of power, reducing energy loss, and no dedicated rooms are required.
It realizes the safe and stable operation of the data center air conditioning system, reduces energy loss, extends equipment life, reduces system costs, and improves the system's environmental adaptability and safety reliability.
Smart Images
Figure CN119482903A_ABST
Abstract
Description
Technical Field
[0001] The present invention belongs to the technical field of air conditioning power supply, and more specifically relates to a super capacitor backup power air conditioning system for a data center. Background Art
[0002] At present, digitalization has been widely integrated into all aspects of social production and life. With the rapid development of artificial intelligence, the power density of IT equipment has also increased rapidly. IT servers have the characteristics of high heat density and thermal sensitivity. As the infrastructure for the development of digital society, the safety of the air conditioning system of the data center is extremely important and needs to be operated uninterruptedly throughout the year. Once a failure occurs, it will cause huge economic losses. Therefore, there are high requirements for the safety of the air conditioning system in the data center.
[0003] The power supply system of the data center usually includes dual power supply, uninterruptible power supply system and diesel generator set. Air conditioning equipment and electronic information equipment are powered by different uninterruptible power supply systems. The uninterruptible power supply system commonly used at present is UPS and battery pack. Although this mode effectively solves the emergency problem of power outage in the power grid, UPS is always online. The power input and output process must go through the energy conversion of the UPS rectifier and inverter, which causes a certain amount of energy loss. Long-term operation will cause equipment overheating, shorten equipment life and increase safety hazards. Compared with other types of power supply systems, this system is also expensive and larger in size. It has high environmental requirements and needs to build independent storage space. Commonly used lithium batteries, lead-acid batteries and other batteries are chemical power sources. Although they have the characteristics of high energy density, their power density is low. For high-power equipment such as air conditioners, the system capacity is large, the charging and discharging speed is slow, the life is short, and the system safety requirements are high.
[0004] Supercapacitors are physical power sources with the advantages of good energy storage timeliness, high power density, fast charging speed, long cycle life, safety and reliability, and green environmental protection. They have ultra-fast high-frequency charging and discharging capabilities, a lifespan of up to 1.5 million times / 10 years, and a wide temperature adaptability range of -40 to +65°C. The backup power supply mode is adopted to connect the supercapacitor power supply between the power grid and the load. When the power grid is powered, the air-conditioning equipment is directly powered by the power grid, reducing the energy loss of the rectifier and inverter; when the power grid is out of power, the supercapacitor power supply quickly switches to power the air-conditioning equipment. In particular, with the rapid development of distributed air-conditioning systems in data centers, supercapacitors are one of the important ways to solve the emergency power supply of data center air-conditioning systems. Therefore, in order to solve the current urgent problems of emergency power supply for data center air-conditioning and the new construction model, the development of supercapacitor backup power air-conditioning systems with fast speed, ultra-long life, low environmental requirements, safety and reliability is an important technical approach to promote the development of data centers. Summary of the invention
[0005] The purpose of the present invention is to overcome the problems existing in the above-mentioned prior art and to provide a supercapacitor backup power air conditioning system suitable for the field of data center air conditioning, so that it can effectively ensure the safe operation of the data center air conditioning power supply while ensuring the safe and stable operation of the data center air conditioning and realizing the green and low-carbon development of the data center. At the same time, the supercapacitor has a wide range of environmental adaptability and does not require the construction of a special room, so a new construction model of the data center air conditioning power supply system can be effectively constructed.
[0006] The technical solution of the present invention is as follows: A supercapacitor backup power air conditioning system, characterized in that the system includes an AC power supply, an AC bus, a bidirectional inverter, a supercapacitor, an air conditioning control unit, a switch 1, a frequency converter 1, an indoor fan, a switch 2, a frequency converter 2, an outdoor fan and a switch 3, a frequency converter 3, and a compressor; the AC power supply outputs the AC bus; the supercapacitor is connected to the AC bus through a bidirectional inverter; the indoor fan is connected to the AC bus in turn through the frequency converter 1 and the switch 1; the outdoor fan is connected to the AC bus in turn through the frequency converter 2 and the switch 2; the compressor is connected to the AC bus in turn through the frequency converter 3 and the switch 3; the air conditioning control unit is connected to the AC bus, and controls the on and off of the switches 1, 1 and 3 according to the state of the AC bus.
[0007] In the above technical solution, when the AC bus is in the AC power supply state, the supercapacitor is charged through a bidirectional inverter; when the AC power supply is interrupted, the supercapacitor supplies power to the AC bus through a bidirectional inverter; the supercapacitor charging power is less than the power supply power.
[0008] Preferably, the power supply switching time of the bidirectional inverter is less than 10 ms from the interruption of the AC power supply to the start of power supply.
[0009] Preferably, the capacitor for filtering and voltage stabilization provided in the air-conditioning control unit can provide the air-conditioning control unit with a power supply time of more than 10 ms.
[0010] Preferably, the switches 1, 2 and 3 are disconnected synchronously when the AC power supply is interrupted; after switching to supercapacitor power supply, the air conditioning control unit controls the switches 1, 2 and 3 to be connected.
[0011] Compared with the prior art, the present invention has the following advantages and outstanding technical effects: the present invention closely combines the needs of efficient and safe operation of the emergency power supply system for data center air conditioning, and fully utilizes the advantages of supercapacitors such as ultra-fast and high-frequency charging and discharging, wide temperature adaptability range, ultra-long life, high safety, high reliability, and linear charging and discharging, to realize a backup emergency power supply mode for the air conditioning system, ensure the safe and stable operation of the air conditioning system, and construct a new emergency power supply form for data center air conditioning and a new construction mode that does not require a dedicated room. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a schematic diagram of the principle of an embodiment of a supercapacitor backup power air conditioning system provided by the present invention.
[0013] In the figure: 1—AC power supply; 2—bidirectional inverter; 3—supercapacitor; 4—air conditioning control unit; 5—inverter 1; 6—indoor fan; 7—inverter 2; 8—outdoor fan; 9—inverter 3; 10—compressor; 11—switch 1; 12—switch 2; 13—switch 3; 14—AC bus. DETAILED DESCRIPTION
[0014] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments:
[0015] Figure 1 The present invention is a schematic diagram of the principle of a supercapacitor backup power air conditioning system, which includes an AC power supply, an AC bus, a bidirectional inverter, a supercapacitor, an air conditioning control unit, a switch 1, a frequency converter 1, an indoor fan, a switch 2, a frequency converter 2, an outdoor fan and a switch 3, a frequency converter 3, and a compressor; the AC power supply outputs an AC bus; the supercapacitor is connected to the AC bus through a bidirectional inverter; the indoor fan is connected to the AC bus through frequency converter 1 and switch 1 in sequence; the outdoor fan is connected to the AC bus through frequency converter 2 and switch 2 in sequence; the compressor is connected to the AC bus through frequency converter 3 and switch 3 in sequence; the air conditioning control unit is connected to the AC bus, and controls the on and off of switches 1, 1, and 3 according to the state of the AC bus.
[0016] When the AC bus is in the AC power supply state, the supercapacitor is charged through the bidirectional inverter; when the AC power supply is interrupted, the supercapacitor supplies power to the AC bus through the bidirectional inverter; the supercapacitor charging power is less than the power supply power. The power supply switching time of the bidirectional inverter is less than 10ms from the interruption of the AC power supply to the start of power supply. The capacitor used for filtering and voltage stabilization of the air-conditioning control unit can provide a power supply time of more than 10ms for the air-conditioning control unit. The switches 1, 2 and 3 are disconnected synchronously when the AC power supply is interrupted; after switching to supercapacitor power supply, the air-conditioning control unit controls switches 1, 2 and 3 to connect.
Claims
1. A supercapacitor backup air conditioning system, characterized in that: The system includes an AC power supply, an AC bus, a bidirectional inverter, a super capacitor, an air conditioning control unit, a switch 1, a frequency converter 1, an indoor fan, a switch 2, a frequency converter 2, an outdoor fan and a switch 3, a frequency converter 3, and a compressor; the AC power supply outputs an AC bus; the super capacitor is connected to the AC bus through a bidirectional inverter; the indoor fan is connected to the AC bus through frequency converter 1 and switch 1 in sequence; the outdoor fan is connected to the AC bus through frequency converter 2 and switch 2 in sequence; the compressor is connected to the AC bus through frequency converter 3 and switch 3 in sequence; the air conditioning control unit is connected to the AC bus, and controls the on and off of switches 1, 1, and 3 according to the state of the AC bus.
2. A supercapacitor backup air conditioning system according to claim 1, characterized in that: When the AC bus is in the AC power supply state, the supercapacitor is charged through the bidirectional inverter; when the AC power supply is interrupted, the supercapacitor supplies power to the AC bus through the bidirectional inverter; the supercapacitor charging power is less than the power supply power.
3. A supercapacitor backup air conditioning system according to claim 1, characterized in that: The power supply switching time of the bidirectional inverter is less than 10ms from the interruption of the AC power supply to the start of power supply.
4. A supercapacitor backup air conditioning system according to claim 1, characterized in that: The capacitor for filtering and voltage stabilization provided by the air-conditioning control unit can provide the air-conditioning control unit with a power supply time of more than 10ms.
5. The supercapacitor backup air conditioning system according to claim 1, characterized in that: The switches 1, 2 and 3 are disconnected synchronously when the AC power supply is interrupted; after switching to the supercapacitor for power supply, the air conditioning control unit controls the switches 1, 2 and 3 to be connected.