Super-capacitor standby power air conditioning system

Abstract

The utility model relates to a super capacitor standby power air-conditioning system, which comprises an alternating current power supply, an alternating current bus, a bidirectional inverter, a super capacitor, an air-conditioning control unit, a switch, a frequency converter, an indoor side fan, an outdoor side fan and a compressor, and according to the alternating current bus state, the air conditioner control unit controls and regulates to provide electricity for the air conditioner fan and the compressor. The system has the advantages of ultra-fast high-frequency charging and discharging, wide temperature adaptation range, ultra-long service life, high safety, high reliability and linear charging and discharging, safe and effective backup emergency power supply of the air conditioning system is realized, and a new emergency power supply form of a data center air conditioner and a new construction mode without a special room are constructed.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of air conditioner power supply, and more particularly to a super capacitor standby power air conditioner system for a data center. BACKGROUND

[0002] At present, digitization is widely integrated into various aspects of social production and life. With the rapid development of artificial intelligence, the power density of IT equipment is also rapidly increasing. IT servers have the characteristics of high heat density and heat sensitivity. The safety of the air conditioning system of a data center, which is the infrastructure of digital society development, is extremely important. The air conditioning system needs to operate uninterruptedly throughout the year. Once a fault occurs, it will cause huge economic losses. Therefore, there is a high requirement for the safety of the air conditioning system of a data center.

[0003] The power supply system of a data center usually includes double power supply, uninterruptible power supply system and diesel generator set. The air conditioning equipment and electronic information equipment are respectively powered by different uninterruptible power supply systems. The commonly used uninterruptible power supply system at present is UPS and battery pack. Although this mode effectively solves the emergency problem of power grid outage, the UPS is always online mode. During the process of power input and output, energy conversion through the rectifier and inverter of the UPS is caused, which causes certain energy loss. Long-time operation will cause overheating of the equipment, shorten the service life of the equipment and increase the safety hazard. Compared with other types of power supply systems, the price of this system is also high, and the volume is also large. It has high requirements for the environment and needs to build an independent storage space. The commonly used lithium battery, lead-acid battery and other batteries belong to chemical power supply. Although they have the characteristics of high energy density, they have low power density. For large power equipment such as air conditioners, the system capacity is large, the charging and discharging speed is slow, the service life is short, and the system safety requirement is high.

[0004] The super capacitor belongs to physical power supply and has the advantages of good energy storage timeliness, high power density, fast charging speed, long cycle life, safety and reliability, green environmental protection and other advantages. The super capacitor has the advantages of super-fast high-frequency charging and discharging capacity, service life of 1.5 million times / 10 years and wide temperature adaptation range of-40+65 DEG C. And the backup power supply mode is adopted. The super capacitor power supply is connected 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 powered off, the super capacitor power supply quickly switches to power the air conditioning equipment. In particular, with the rapid development of distributed air conditioning systems in data centers, the super capacitor is 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 data center air conditioning emergency power supply and new construction mode, to develop a super capacitor standby power air conditioner system with fast, super long life and low environmental requirements, safety and reliability is an important technical way to promote the development of data centers. SUMMARY

[0005] The present application aims to overcome the problems in the prior art, and provides a super capacitor standby air conditioning system suitable for the field of data center air conditioning, which can effectively ensure the safe operation of the data center air conditioning power supply, and at the same time, the super capacitor has wide environmental adaptability, does not need to build a special room, and can effectively build a new construction mode of the data center air conditioning power supply system.

[0006] The technical solution of the present application is as follows:

[0007] A super capacitor standby air conditioning system, characterized in that the system comprises an alternating current power supply, an alternating current bus, a bidirectional inverter, a super capacitor, an air conditioning control unit, switch 1, frequency converter 1, an indoor side fan, switch 2, frequency converter 2, an outdoor side fan and switch 3, frequency converter 3, and a compressor; the alternating current power supply outputs the alternating current bus; the super capacitor is connected with the alternating current bus through the bidirectional inverter; the indoor side fan is connected with the alternating current bus through frequency converter 1 and switch 1 in sequence; the outdoor side fan is connected with the alternating current bus through frequency converter 2 and switch 2 in sequence; the compressor is connected with the alternating current bus through frequency converter 3 and switch 3 in sequence; the air conditioning control unit is connected with the alternating current bus, and controls the on-off of switch 1, switch 2 and switch 3 according to the state of the alternating current bus.

[0008] In the above technical solution, the power supply switching time of the bidirectional inverter is less than 10 ms from the interruption of alternating current power supply to the start of power supply.

[0009] Preferably, the capacitor provided by the air conditioning control unit for filtering and voltage stabilization provides a power supply time of more than 10 ms for the air conditioning control unit.

[0010] Compared with the prior art, the present application has the following advantages and outstanding technical effects: the present application closely combines the needs of efficient and safe operation of the data center air conditioning emergency power supply system, fully utilizes the advantages of super capacitor, such as superfast high-frequency charging and discharging, wide temperature adaptation range, super-long life, high safety, high reliability, and linear charging and discharging, realizes the backup emergency power supply mode of the air conditioning system, ensures the safe and stable operation of the air conditioning system, and builds a new emergency power supply form of the data center air conditioning and a new construction mode without a special room. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 is a principle schematic diagram of an embodiment of the super capacitor standby air conditioning system provided by the present application.

[0012] In the figure: 1 - AC power supply; 2 - bidirectional inverter; 3 - super capacitor; 4 - air conditioner control unit; 5 - frequency converter 1; 6 - indoor side fan; 7 - frequency converter 2; 8 - outdoor side fan; 9 - frequency converter 3; 10 - compressor; 11 - switch 1; 12 - switch 2; 13 - switch 3; 14 - AC bus. DETAILED DESCRIPTION

[0013] The application will be further described below in conjunction with the drawings and specific embodiments:

[0014] Figure 1 The application relates to a super capacitor standby air conditioner system, and a principle schematic diagram of the system, which comprises an AC power supply, an AC bus, a bidirectional inverter, a super capacitor, an air conditioner control unit, a switch 1, a frequency converter 1, an indoor side fan, a switch 2, a frequency converter 2, an outdoor side fan and a switch 3, a frequency converter 3 and a compressor; the AC power supply outputs the AC bus; the super capacitor is connected with the AC bus through the bidirectional inverter; the indoor side fan is connected with the AC bus through the frequency converter 1 and the switch 1 in sequence; the outdoor side fan is connected with the AC bus through the frequency converter 2 and the switch 2 in sequence; the compressor is connected with the AC bus through the frequency converter 3 and the switch 3 in sequence; the air conditioner control unit is connected with the AC bus, and controls the on-off of the switch 1, the switch 2 and the switch 3 according to the state of the AC bus.

[0015] When the AC bus is powered by the AC power supply, the super capacitor is charged through the bidirectional inverter; when the AC power supply is interrupted, the super capacitor supplies power to the AC bus through the bidirectional inverter; the charging power of the super capacitor is less than the power supply power. 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. The capacitor of the air conditioner control unit for filtering and voltage stabilization provides a power supply time of more than 10 ms for the air conditioner control unit. The switch 1, the switch 2 and the switch 3 are synchronously disconnected when the AC power supply is interrupted; after switching to super capacitor power supply, the air conditioner control unit controls the switch 1, the switch 2 and the switch 3 to be connected.

Claims

1. A supercapacitor backup air conditioning system, characterized by: The system comprises an AC power supply, an AC bus, a bidirectional inverter, a super capacitor, an air conditioner control unit, switch 1, frequency converter 1, an indoor side fan, switch 2, frequency converter 2, an outdoor side fan and switch 3, frequency converter 3, and a compressor; the AC power supply outputs the AC bus; the super capacitor is connected to the AC bus through the bidirectional inverter; the indoor side fan is connected to the AC bus through frequency converter 1 and switch 1 in sequence; the outdoor side 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 conditioner control unit is connected to the AC bus and controls the on-off of switch 1, switch 2 and switch 3 according to the state of the AC bus.

2. The supercapacitor backup air conditioning system of claim 1, wherein: The power supply switching time of the bidirectional inverter is less than 10 ms from the interruption to the start of power supply from the AC power supply.

3. The supercapacitor backup air conditioning system of claim 1, wherein: The capacitor for filtering and voltage stabilization provided by the air conditioner control unit provides the air conditioner control unit with a power supply time of more than 10 ms.

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