WO2018214765A1 - 不间断电源供电空调器控制方法和空调器 - Google Patents

不间断电源供电空调器控制方法和空调器 Download PDF

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Publication number
WO2018214765A1
WO2018214765A1 PCT/CN2018/086643 CN2018086643W WO2018214765A1 WO 2018214765 A1 WO2018214765 A1 WO 2018214765A1 CN 2018086643 W CN2018086643 W CN 2018086643W WO 2018214765 A1 WO2018214765 A1 WO 2018214765A1
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Prior art keywords
air conditioner
ups
overload
operating frequency
control
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PCT/CN2018/086643
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English (en)
French (fr)
Inventor
李洪超
郭亮
王立刚
张静
王月亮
卢保东
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Qingdao Haier Air Conditioner Gen Corp Ltd
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Qingdao Haier Air Conditioner Gen Corp Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F25B49/022—Compressor control arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2600/00—Control issues
    • F25B2600/02—Compressor control
    • F25B2600/024—Compressor control by controlling the electric parameters, e.g. current or voltage

Definitions

  • the present invention relates to the field of air conditioning technology, and in particular, to a UPS power supply air conditioner control method and an air conditioner using the same.
  • UPS power supplies are generally provided for air conditioners. Due to the relative backwardness of these areas, it is likely that the UPS power supply and air conditioner load are not matched. When the power is cut off instantaneously, the UPS operates in the overload protection mode and the inverter stops, which causes the air conditioner to be unusable.
  • the invention provides a control method for a UPS power supply air conditioner, so as to solve the problem that the UPS works in an overload protection mode and the inverter is stopped, thereby causing the air conditioner to be unusable.
  • a UPS power supply air conditioner control method includes the following steps:
  • the mains is interrupted, and the battery in the UPS supplies power to the air conditioner;
  • the UPS detects the UPS real-time output power P 0 . If the UPS real-time output power P 0 is greater than the UPS rated load P s , the UPS generates an overload alarm signal and outputs it to the control chip of the air conditioner;
  • the control chip of the air conditioner After receiving the overload alarm signal, the control chip of the air conditioner outputs a first frequency control signal to control the compressor to operate according to the first overload operating frequency P p1 , and the first overload operating frequency P p1 is smaller than the actual operating frequency P 1 .
  • the compressor maintains the first overload operating frequency P p1 to operate;
  • the UPS detects a feedback output power P f generated by the air conditioner operating according to the first overload operating frequency P p1 , and if the feedback output power P f is less than or equal to the rated load P s , the compressor maintains the first overload operating frequency P p1 is operated until the mains supply is restored or the terminal voltage of the battery drops to zero.
  • the UPS is stored nominal load P s corresponding to the rated current I s; utility power fails, power supply UPS is an air conditioner, the air conditioner control chip detects the UPS signal and generate a first operating current I p0, the The first operating current I p0 is smaller than the rated current I s , and the control chip of the air conditioner generates an actual operating frequency P 1 according to the first operating current I p0 and controls the compressor to operate according to the actual operating frequency P 1 .
  • the first amplitude A is a fixed value pre-existing in the control chip of the air conditioner.
  • A 1A.
  • the control chip of the air conditioner calls a corresponding control current I pX according to the difference P m , and I pX increases as P m increases.
  • the UPS power supply air conditioner control method disclosed by the invention can make the air conditioner not stop due to the overload protection of the UPS when the UPS is supplying the air conditioner, and at the same time, control the optimal operation mode of the compressor under the current power supply condition on the one hand.
  • the UPS and the battery are protected, which has the advantages of good running effect and good cooling capacity.
  • the UPS power supply air conditioner control method includes the following steps:
  • the mains is interrupted, and the battery in the UPS supplies power to the air conditioner;
  • the UPS detects the UPS real-time output power P 0 . If the UPS real-time output power P 0 is greater than the UPS rated load P s , the UPS generates an overload alarm signal and outputs it to the control chip of the air conditioner;
  • the control chip of the air conditioner After receiving the overload alarm signal, the control chip of the air conditioner outputs a first frequency control signal to control the compressor to operate according to the first overload operating frequency P p1 , and the first overload operating frequency P p1 is smaller than the actual operating frequency P 1 .
  • the compressor maintains the first overload operating frequency P p1 to operate;
  • the UPS detects a feedback output power P f generated by the air conditioner operating according to the first overload operating frequency P p1 , and if the feedback output power P f is less than or equal to the rated load P s , the compressor maintains the first overload operating frequency P p1 is operated until the mains supply is restored or the terminal voltage of the battery drops to zero.
  • the air conditioner disclosed by the invention can automatically form a preferred power distribution scheme when the mains power source is abnormal, and the air conditioner can be kept without stopping and extended to a sufficient running time.
  • FIG. 1 is a flow chart of a first embodiment of a method for controlling a UPS power supply air conditioner according to the present invention
  • FIG. 2 is a flow chart of a second embodiment of a method for controlling a UPS power supply air conditioner according to the present invention
  • FIG. 3 is a flow chart of a third embodiment of a method for controlling a UPS power supply air conditioner according to the present invention.
  • the UPS power supply air conditioner referred to in this embodiment refers to an air conditioner equipped with a UPS device.
  • the UPS device an overvoltage detection circuit and an overcurrent detection circuit are provided.
  • the UPS device cuts off the output of the inverter, stops supplying power to the load, and functions as a load and a UPS.
  • the protection of the equipment since the air conditioner is a load that changes with the working conditions, during the power supply of the UPS device, there may be a problem of alarm or even shutdown due to the load change of the air conditioner, so that the air conditioner is forced to stop. , reducing the user experience. If it is used in a special place such as a hospital, it is more likely to cause irreversible damage.
  • the UPS power supply air conditioner control method disclosed in this embodiment aims to solve this problem.
  • the air conditioner receives the temperature detection value output by the indoor temperature sensor.
  • the temperature sensor is preferably disposed on the air return of the air conditioner. The difference between the indoor temperature and the set temperature is used as an input parameter to control the compressor operation of the air conditioner, and the humidity and temperature of the air-conditioned room are adjusted.
  • the air conditioner receives the battery power supply signal through the power supply circuit, and the air conditioner will exit from the normal control mode under the control of the air conditioner control chip, and enter the UPS power supply control mode.
  • the UPS After entering the UPS power supply control mode, the UPS first detects the UPS real-time output power P 0 . If the UPS real-time output power P 0 is greater than the UPS rated load P s , the UPS generates an overload alarm signal and outputs the control chip to the air conditioner. . At one end of the air conditioner, the control chip of the air conditioner collects whether an overload alarm signal is generated. If no overload alarm signal is generated, it means that when the normal control mode is exited and the UPS power supply mode is started, the total power of the air conditioner corresponding to the actual operating frequency of the compressor satisfies the condition that the rated power of the UPS is equal to or less than the rated power of the UPS. Maintain this frequency operation without alarm or shutdown.
  • the control chip of the air conditioner performs frequency reduction control on the air conditioner after receiving the overload alarm signal. Specifically, the control chip of the air conditioner outputs a first frequency control signal, and controls to operate the compressor according to the first overload operating frequency P p1 , the first overload operating frequency P p1 is smaller than the actual operating frequency P 1 , and the compressor maintains the first An overload operating frequency P p1 is operated.
  • the UPS monitors and detects the feedback output power P f generated by the air conditioner operating according to the first overload operating frequency P p1 , if the feedback output power If P f is less than or equal to the rated load P s , the compressor maintains the first overload operating frequency P p1 until the mains supply is restored or the terminal voltage of the battery drops to zero.
  • the UPS determines whether the feedback output power P f detected by the UPS is less than or equal to the rated load P s.
  • the control chip of the air conditioner controls the down-conversion operation of the compressor according to the overload alarm signal, which is continuously iteratively cycled. Specifically, if the UPS generates N times of overload alarm signals during the operation of the battery in the UPS, the N may be 2 times, 3 times or more, and the overload alarm signal is divided into N. The output is output to the control chip of the air conditioner.
  • the rated load of the UPS and the load matching of the air conditioner are taken into consideration.
  • the rated current I s corresponding to the rated load P s is stored in the UPS.
  • the rated current I s is stored separately in a storage unit of the UPS, so that it can be called at any time to improve the speed of the call.
  • the control chip of the air conditioner requests to call the rated current I s from the storage unit of the UPS, and generates a first operating current I p0 according to the rated current I s , the first operating current I p0 being smaller than the rated current I s ,
  • the control chip of the air conditioner generates an actual operating frequency P 1 according to the first operating current I p0 and controls the compressor to operate according to the actual operating frequency P 1 .
  • the difference between the first operating current I p0 and the rated current I s is preferably a fixed value.
  • the UPS real-time output power P 0 is less than 1.1P s , which is less than 110% of the rated load.
  • the real-time operating frequency P 1 of the compressor is the upper limit frequency of the compressor operation, and the subsequent tracking and down-conversion is based on the upper limit frequency, and the UPS does not enter the overload protection program during the entire running process. Directly cut off the output of the inverter, causing the air conditioner to stop.
  • the current is an input parameter of the compressor down-conversion control.
  • the control chip of the air conditioner will perform the first operation.
  • the current I p0 decreases the first amplitude A to generate a first control current I p1
  • the first control current I p1 I p0 ⁇ A
  • the control chip of the air conditioner generates the according to the first control current I p1
  • the first overload operating frequency P p1 is the first overload operating frequency
  • the first amplitude A is preferably a fixed value and is pre-stored in the control chip of the air conditioner.
  • the first amplitude A is preferably 1A.
  • the difference between the output power P 0 and the rated load Ps P m, the air conditioner control chip call the corresponding control current I pX according to the difference value P m, I pX with increasing P m increases.
  • the air conditioner when the UPS is powered by the air conditioner, the air conditioner does not stop due to the overload protection of the UPS, and at the same time, the compressor is operated on the current power supply condition.
  • the optimal operating mode underneath on the other hand, protects the UPS and the battery, and has the advantages of good running effect and good cooling capacity.
  • the present invention also provides an air conditioner using the above UPS power supply air conditioner control method.
  • the control method of the UPS power supply air conditioner is specifically described in detail in the above embodiments and the drawings, and details are not described herein again.
  • the air conditioner using the above UPS power supply air conditioner control method can achieve the same technical effect.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

UPS供电空调器控制方法，市电中断，UPS中的蓄电池为空调器供电；UPS检测UPS实时输出功率P 0，如果UPS实时输出功率P 0大于UPS额定负载P s，则UPS生成过载报警信号并输出至空调器的控制芯片；空调器的控制芯片在接收到过载报警信号后，控制将压缩机按照第一过载运行频率P p1运行, 第一过载运行频率Pp1小于实际运行频率P1，压缩机维持第一过载运行频率P p1运行；UPS检测按照第一过载运行频率Pp1运行的压缩机生成的反馈输出功率P f，如果反馈输出功率P f小于等于额定负载P s，则压缩机维持第一过载运行频率P p1运行直至恢复市电供电或蓄电池的端电压下降为0。同时还公开一种空调器。本发明具有自动化程度高且用户体验好的优点。

Description

不间断电源供电空调器控制方法和空调器 技术领域
本发明涉及空气调节技术领域，尤其涉及一种UPS供电空调器控制方法和采用该种控制方法的空调器。
 背景技术
在部分经济较为落后的国家和地区，如非洲的埃塞俄比亚，亚洲的巴基斯坦等国，电力用户的覆盖率仅为20%至40%，供电质量也非常差，电源电压、频率的波动大，波形失真严重，同时电力供给可能随时中断。普通的家用电器，如照明设备等，一般采用电池进行供电。
 技术问题
但是，对于医院、银行的清算中心、民航、气象等部门来说，同时还需要使用空调器维持正常的工作，为了避免空调器停机，一般还会为空调器配备UPS电源。由于这些区域相对落后，很有可能配备的UPS电源和空调器负载不匹配。当瞬间发生断电时，UPS工作在过载保护模式，逆变器停机，从而导致空调器无法使用。
 技术解决方案
本发明提供一种UPS供电空调器控制方法，以解决UPS工作在过载保护模式，逆变器停机，从而导致空调器无法使用的问题。
一种UPS供电空调器控制方法，包括以下步骤：
市电中断，UPS中的蓄电池为空调器供电；
UPS检测UPS实时输出功率P 0，如果所述UPS实时输出功率P 0大于UPS额定负载P s，则所述UPS生成过载报警信号并输出至空调器的控制芯片；
空调器的控制芯片在接收到所述过载报警信号后，输出第一频率控制信号，控制将压缩机按照第一过载运行频率P p1运行, 第一过载运行频率P p1小于实际运行频率P 1，压缩机维持所述第一过载运行频率P p1运行；
UPS检测按照所述第一过载运行频率P p1运行的空调器生成的反馈输出功率P f，如果所述反馈输出功率P f小于等于额定负载P s，则压缩机维持所述第一过载运行频率P p1运行直至恢复市电供电或蓄电池的端电压下降为0。
进一步的，如果所述反馈输出功率P f大于额定负载P s，所述UPS连续N次生成过载报警信号并将所述过载报警信号分N次输出至空调器的控制芯片，空调器的控制芯片对应每一个所述过载报警信号生成一个频率控制信号，控制压缩机按照过载运行频率P pN运行，过载运行频率P pN= P pN-1-X; 直至所述反馈输出功率P f小于等于所述额定负载P s，空调器的控制芯片设定生成的最后一个过载运行频率P pN为保护运行频率，压缩机维持所述保护运行频率运行直至恢复市电供电或UPS中的蓄电池的端电压下降为0；其中N≥1。
进一步的，UPS中存储有所述额定负载P s对应的额定电流I s；市电中断，UPS为空调器供电，空调器的控制芯片检测UPS供电信号并生成第一运行电流I p0，所述第一运行电流I p0小于所述额定电流I s，所述空调器的控制芯片根据所述第一运行电流I p0生成实际运行频率P 1，并控制压缩机按照实际运行频率P 1运行。
优选的，所述压缩机按照实时运行频率P 1运行时，UPS实时输出功率P 0小于1.1P s。
进一步的，空调器的控制芯片在接收到所述过载报警信号后，将所述第一运行电流I p0降低第一幅值A生成第一控制电流I p1，所述第一控制电流I p1= I p0-A，所述空调器的控制芯片根据所述第一控制电流I p1生成所述第一过载运行频率P p1。
进一步的，如果所述空调器的控制芯片N次接收到所述过载报警信号，则所述空调器的控制芯片对应每一个所述过载报警信号生成一个控制电流I pN, I pN= I pN-1-A，所述空调器的控制芯片根据控制电流I pN生成过载运行频率P pN。
优选的，所述第一幅值A为预存在所述空调器的控制芯片中的固定值。
优选的，A=1A。
进一步的，所述空调器的控制芯片中预先存储有多个控制电流I pX, I pX=I p0-NA, 所述过载报警信号包括UPS实时输出功率P 0和额定负载Ps的差值P m，所述空调器的控制芯片根据所述差值P m调用对应的控制电流I pX, I pX随着P m的增大而增大。
本发明所公开的UPS供电空调器控制方法，可以使得UPS为空调供电时，空调器不会因为UPS的过载保护而停机，同时，一方面控制压缩机运行在当前供电条件下的最优运行模式，另一方面对UPS和蓄电池形成保护，具有运行效果好且制冷能力佳的优点。
还公开了一种空调器，采用UPS供电空调器控制方法。UPS供电空调器控制方法包括以下步骤：
市电中断，UPS中的蓄电池为空调器供电；
UPS检测UPS实时输出功率P 0，如果所述UPS实时输出功率P 0大于UPS额定负载P s，则所述UPS生成过载报警信号并输出至空调器的控制芯片；
空调器的控制芯片在接收到所述过载报警信号后，输出第一频率控制信号，控制将压缩机按照第一过载运行频率P p1运行, 第一过载运行频率P p1小于实际运行频率P 1，压缩机维持所述第一过载运行频率P p1运行；
UPS检测按照所述第一过载运行频率P p1运行的空调器生成的反馈输出功率P f，如果所述反馈输出功率P f小于等于额定负载P s，则压缩机维持所述第一过载运行频率P p1运行直至恢复市电供电或蓄电池的端电压下降为0。
有益效果
本发明所公开的空调器，在市电电源异常时，可以自动形成优选的电源分配方案，空调器可以保持不停机，并延长至足够的运行时间。
 附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作一简单地介绍，显而易见地，下面描述中的附图是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1为本发明所公开的UPS供电空调器控制方法第一种实施例的流程图；
图2为本发明所公开的UPS供电空调器控制方法第二种实施例的流程图；
图3为本发明所公开的UPS供电空调器控制方法第三种实施例的流程图。
 本发明的实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
参见图1所示为本发明所公开的UPS供电空调器控制方法第一种实施例的流程图。本实施例所指的UPS供电空调器，是指配备UPS装置的空调器。在UPS装置中，设置有过压检测电路和过流检测电路，当输出电压或者输出电流超过设定值时，UPS装置会切断逆变器的输出，停止向负载供电，起到对负载和UPS设备的保护作用。但是，由于空调器是一个随着工况不断变化的负载，所以，在UPS装置供电的过程中，可能会出现随着空调器的负载变化而报警、甚至停机的问题，使得空调器被迫停机，降低用户的体验。如果是在医院等特殊场所使用，更有可能造成不可逆的损失。本实施例所公开的UPS供电空调器控制方法旨在解决这一问题。
具体来说，当市电正常时，空调器接收室内温度传感器输出的温度检测值。温度传感器优选设置在空调器的回风口上。并利用室内温度和设定温度的差值作为输入参数控制空调器的压缩机工作，对空调房间的湿度和温度进行调节。当市电中断时，空调器会通过供电回路接收到蓄电池供电信号，空调器会在空调器控制芯片的控制下从正常的控制模式退出,进入UPS供电控制模式。
当进入UPS供电控制模式后，首先UPS检测UPS实时输出功率P 0，如果所述UPS实时输出功率P 0大于UPS额定负载P s，则所述UPS生成过载报警信号并输出至空调器的控制芯片。在空调器一端，空调器的控制芯片采集是否有过载报警信号生成。如果没有过载报警信号生成，则说明退出正常控制模式并开始UPS供电模式时，压缩机的实际运行频率对应的空调器总功率满足小于等于UPS额定功率的条件，UPS与负载匹配，则控制压缩机维持该频率运行，不会出现报警或者停机的情况。如果有过载报警信号生成，空调器的控制芯片在接收到所述过载报警信号后，对空调器实行降频控制。具体来说，空调器的控制芯片输出第一频率控制信号，控制将压缩机按照第一过载运行频率P p1运行, 第一过载运行频率P p1小于实际运行频率P 1，压缩机维持所述第一过载运行频率P p1运行。在压缩机维持所述第一过载运行频率P p1运行的过程中，UPS实时监控检测按照所述第一过载运行频率P p1运行的空调器生成的反馈输出功率P f，如果所述反馈输出功率P f小于等于额定负载P s，则压缩机维持所述第一过载运行频率P p1运行直至恢复市电供电或蓄电池的端电压下降为0。
如果UPS所检测到的所述反馈输出功率P f大于额定负载P s，或者在UPS供电模式中，UPS所检测到的所述反馈输出功率P f在某一时刻大于额定负载P s，则所述UPS再次生成过载报警信号并将所述过载报警信号再次输出至空调器的控制芯片，空调器的控制芯片对应所述过载报警信号再生成一个频率控制信号，控制压缩机按照过载运行频率P p2运行，过载运行频率P p2= P p1-X。UPS判断压缩机按照P p2运行时，UPS所检测到的反馈输出功率P f是否小于等于额定负载P s. ，如果所述反馈输出功率P f小于等于额定负载P s，则压缩机维持所述第一过载运行频率P p1运行直至恢复市电供电或蓄电池的端电压下降为0。
参见图2所示，空调器的控制芯片根据过载报警信号控制压缩机降频运行的过程是不断迭代循环的。具体来说，如果在UPS中的蓄电池为空调供电的运行过程中，所述UPS生成N次过载报警信号，N可能是2次、3次或者更多次，则将所述过载报警信号分N次输出至空调器的控制芯片。空调器的控制芯片对应每一个所述过载报警信号在上一个过载运行频率P pN的基础上生成一个频率控制信号，控制压缩机按照过载运行频率P pN运行，过载运行频率P pN= P pN-1-X，直至所述反馈输出功率P f小于等于所述额定负载P s，空调器的控制芯片设定生成的最后一个过载运行频率P pN为保护运行频率，压缩机维持所述保护运行频率运行直至恢复市电供电或UPS中的蓄电池的端电压下降为0。
通常来说，在选配UPS时，会考虑到UPS的额定负载和空调的负载匹配。为起到对设备的保护作用，优选将压缩机的运行上限设定为小于UPS的额定负载。参见图3所示，为实现这一目的，UPS中存储有所述额定负载P s对应的额定电流I s。额定电流I s独立存储在UPS的一个存储单元中，便于随时调用，提高调用的速度。当市电中断时，UPS为空调器供电，空调器的控制芯片检测到UPS供电信号。空调器的控制芯片请求从UPS的存储单元中调用额定电流I s，并根据额定电流I s生成第一运行电流I p0，所述第一运行电流I p0小于所述额定电流I s，所述空调器的控制芯片根据所述第一运行电流I p0生成实际运行频率P 1，并控制压缩机按照实际运行频率P 1运行。所述第一运行电流I p0和所述额定电流I s的差值优选是一个固定值。压缩机按照实时运行频率P 1运行时，UPS实时输出功率P 0小于1.1P s，即小于额定负载的110%。当UPS为空调供电时，压缩机的实时运行频率P 1是压缩机运行的上限频率，后续的跟踪降频都以该上限频率作为基础，UPS在整个运行过程中都不会进入过载保护程序而直接切断逆变器的输出，使得空调器停机。
考虑到UPS的供电特性以及空调器的特点，优选采用电流作为压缩机降频控制的输入参数，具体来说，空调器的控制芯片在接收到所述过载报警信号后，将所述第一运行电流I p0降低第一幅值A生成第一控制电流I p1，所述第一控制电流I p1= I p0-A，所述空调器的控制芯片根据所述第一控制电流I p1生成所述第一过载运行频率P p1。类似的，如果所述空调器的控制芯片N次接收到所述过载报警信号，则所述空调器的控制芯片对应每一个所述过载报警信号生成一个控制电流I pN, I pN= I pN-1-A，所述空调器的控制芯片根据控制电流I pN生成过载运行频率P pN。其中第一幅值A优选为一个固定值并预存在空调器的控制芯片中。第一幅值A优选为1A。
为了尽快的将压缩机的频率降低到理想的范围，所述空调器的控制芯片中还可以预先存储有多个控制电流I pX, I pX=I p0-NA, 所述过载报警信号包括UPS实时输出功率P 0和额定负载Ps的差值P m，所述空调器的控制芯片根据所述差值P m调用对应的控制电流I pX, I pX随着P m的增大而增大。采用这种控制方式，可以迅速地将压缩机的运行降低到理想的范围，减少生成过载报警信号的次数和过载报警信号占整个控制流程的时长。
采用本发明上述三个实施例所公开的UPS供电空调器控制方法，可以使得UPS为空调供电时，空调器不会因为UPS的过载保护而停机，同时，一方面控制压缩机运行在当前供电条件下的最优运行模式，另一方面对UPS和蓄电池形成保护，具有运行效果好且制冷能力佳的优点。
本发明同时提供了一种采用上述UPS供电空调器控制方法的空调器，UPS供电空调器的控制方法具体参见上述实施例和说明书附图的详细描述和描绘，在此不再赘述。采用上述UPS供电空调器控制方法的空调器可以达到同样的技术效果。
最后应说明的是：以上实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的精神和范围。

Claims (10)

  1. 一种UPS供电空调器控制方法，其特征在于，包括以下步骤：
    市电中断，UPS中的蓄电池为空调器供电；
    UPS检测UPS实时输出功率P 0，如果所述UPS实时输出功率P 0大于UPS额定负载P s，则所述UPS生成过载报警信号并输出至空调器的控制芯片；
    空调器的控制芯片在接收到所述过载报警信号后，输出第一频率控制信号，控制将压缩机按照第一过载运行频率P p1运行, 第一过载运行频率P p1小于实际运行频率P 1，压缩机维持所述第一过载运行频率P p1运行；
    UPS检测按照所述第一过载运行频率P p1运行的空调器生成的反馈输出功率P f，如果所述反馈输出功率P f小于等于额定负载P s，则压缩机维持所述第一过载运行频率P p1运行直至恢复市电供电或蓄电池的端电压下降为0。
  2. 根据权利要求1所述的UPS供电空调器控制方法，其特征在于，
    如果所述反馈输出功率P f大于额定负载P s，所述UPS连续N次生成过载报警信号并将所述过载报警信号分N次输出至空调器的控制芯片，空调器的控制芯片对应每一个所述过载报警信号生成一个频率控制信号，控制压缩机按照过载运行频率P pN运行，过载运行频率P pN= P pN-1-X; 直至所述反馈输出功率P f小于等于所述额定负载P s，空调器的控制芯片设定生成的最后一个过载运行频率P pN为保护运行频率，压缩机维持所述保护运行频率运行直至恢复市电供电或UPS中的蓄电池的端电压下降为0；其中N≥1。
  3. 根据权利要求1或2所述的UPS供电空调器控制方法，其特征在于，
    UPS中存储有所述额定负载P s对应的额定电流I s；
    市电中断，UPS为空调器供电，空调器的控制芯片检测UPS供电信号并生成第一运行电流I p0，所述第一运行电流I p0小于所述额定电流I s，所述空调器的控制芯片根据所述第一运行电流I p0生成实际运行频率P 1，并控制压缩机按照实际运行频率P 1运行。
  4. 根据权利要求3所述的UPS供电空调器控制方法，其特征在于，所述压缩机按照实时运行频率P 1运行时，UPS实时输出功率P 0小于1.1P s。
  5. 根据权利要求4所述的UPS供电空调器控制方法，其特征在于，空调器的控制芯片在接收到所述过载报警信号后，将所述第一运行电流I p0降低第一幅值A生成第一控制电流I p1，所述第一控制电流I p1= I p0-A，所述空调器的控制芯片根据所述第一控制电流I p1生成所述第一过载运行频率P p1。
  6. 根据权利要求5所述的UPS供电空调器控制方法，其特征在于，如果所述空调器的控制芯片N次接收到所述过载报警信号，则所述空调器的控制芯片对应每一个所述过载报警信号生成一个控制电流I pN, I pN= I pN-1-A，所述空调器的控制芯片根据控制电流I pN生成过载运行频率P pN。
  7. 根据权利要求6所述的UPS供电空调器控制方法，其特征在于，所述第一幅值A为预存在所述空调器的控制芯片中的固定值。
  8. 根据权利要求6所述的UPS供电空调器控制方法，其特征在于，A=1A。
  9. 根据权利要求4所述的UPS供电空调器控制方法，其特征在于，所述空调器的控制芯片中预先存储有多个控制电流I pX, I pX=I p0-NA, 所述过载报警信号包括UPS实时输出功率P 0和额定负载Ps的差值P m，所述空调器的控制芯片根据所述差值P m调用对应的控制电流I pX, I pX随着P m的增大而增大。
  10. 一种空调器，其特征在于，采用如权利要求1至9任一项所述的UPS供电空调器控制方法。
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