技术领域technical field
本实用新型涉及空调领域，具体而言，涉及一种空调系统。The utility model relates to the field of air conditioning, in particular to an air conditioning system.
背景技术Background technique
越来越强烈的环保节能需求，使得无论是家用空调还是商用空调的发展也逐步向变频方向发展。目前，永磁同步风机(即叶轮通过永磁同步电机驱动的风机)已广泛应用于空调器中。针对永磁同步机反向发电的特性，往往需要对空调器的风机进行反向制动控制(软件控制或硬件机械控制)。从而避免空调的室外机中永磁同步风机反转发电带来的电机烧毁的风险，然而设置反向制动控制也导致空调器的故障点增加；另外，风机反转发电产生的能量没有有效回收利用，导致能源浪费。The increasingly strong demand for environmental protection and energy saving has made the development of both household air conditioners and commercial air conditioners gradually develop in the direction of frequency conversion. At present, the permanent magnet synchronous fan (that is, the fan whose impeller is driven by a permanent magnet synchronous motor) has been widely used in air conditioners. In view of the characteristics of reverse power generation of the permanent magnet synchronous machine, it is often necessary to perform reverse braking control (software control or hardware mechanical control) on the fan of the air conditioner. In this way, the risk of motor burnout caused by the reverse power generation of the permanent magnet synchronous fan in the outdoor unit of the air conditioner is avoided. However, the setting of reverse braking control also increases the failure points of the air conditioner; in addition, the energy generated by the reverse power generation of the fan is not effectively recovered use, leading to energy waste.
实用新型内容Utility model content
本实用新型旨在提供一种能够更节能的空调系统。The utility model aims to provide a more energy-saving air conditioning system.
本实用新型提供了一种空调系统，包括至少一台风机和至少一台压缩机，空调系统还包括直流母线，以及与至少一台风机对应连接的至少一台风机换流器和与至少一台压缩机对应连接的至少一台压缩机换流器，至少一台风机换流器和至少一台压缩机换流器均与直流母线连接；其中，至少一台风机换流器具有驱动风机的逆变状态和回收风机发电电能的整流状态。The utility model provides an air-conditioning system, which includes at least one fan and at least one compressor. At least one compressor converter connected to the compressor, at least one fan converter and at least one compressor converter are all connected to the DC bus; wherein, at least one fan converter has an inverter for driving the fan Changing state and recovering the rectification state of the electric energy generated by the wind turbine.
进一步地，空调系统还包括新型能源，新型能源与直流母线连接；其中，新型能源为光伏、光热、风能、潮汐、地热和生物质能中的一种。Further, the air-conditioning system also includes new energy, which is connected to the DC bus; wherein, the new energy is one of photovoltaic, photothermal, wind energy, tidal, geothermal, and biomass energy.
进一步地，新型能源通过相应的换流器与直流母线连接。Further, the new energy source is connected to the DC bus through a corresponding converter.
进一步地，空调系统还包括储能单元，储能单元通过相应的换流器与直流母线连接。Further, the air conditioning system further includes an energy storage unit, and the energy storage unit is connected to the DC bus through a corresponding converter.
进一步地，空调系统还包括并网换流器，并网换流器的第一端与电网连接，并网换流器的第二端与直流母线连接。Further, the air conditioning system further includes a grid-connected converter, a first end of the grid-connected converter is connected to the grid, and a second end of the grid-connected converter is connected to the DC bus.
进一步地，空调系统还包括隔离变压器，隔离变压器串联在电网与并网换流器之间。Further, the air conditioning system further includes an isolation transformer, which is connected in series between the grid and the grid-connected converter.
进一步地，并网换流器为四象限换流器。Further, the grid-connected converter is a four-quadrant converter.
进一步地，至少一台风机换流器为四象限换流器。Further, at least one fan converter is a four-quadrant converter.
进一步地，空调系统包括一台压缩机和多台风机。Further, the air conditioning system includes a compressor and multiple blowers.
进一步地，空调系统包括多台压缩机和一台风机。Further, the air conditioning system includes multiple compressors and a fan.
进一步地，空调系统包括多台压缩机和多台风机。Further, the air conditioning system includes multiple compressors and multiple fans.
根据本实用新型的空调系统，通过设置与风机对应的风机换流器，在空调系统工作时，风机换流器工作在逆变状态，驱动风机对空调系统散热，当空调系统停止时，在风机被风驱动发电的情况下，风机换流器工作在整流状态，从而回收电能。即空调系统不工作时，风机成为一台发电机，从而使得空调系统更节能。According to the air conditioning system of the utility model, by setting the fan converter corresponding to the fan, when the air conditioning system is working, the fan converter works in the inverter state, driving the fan to dissipate heat to the air conditioning system, and when the air conditioning system stops, the fan converter In the case of being driven by the wind to generate electricity, the fan converter works in a rectification state to recover electric energy. That is, when the air conditioning system is not working, the fan becomes a generator, which makes the air conditioning system more energy-efficient.
附图说明Description of drawings
构成本实用新型的一部分的附图用来提供对本实用新型的进一步理解，本实用新型的示意性实施例及其说明用于解释本实用新型，并不构成对本实用新型的不当限定。在附图中：The accompanying drawings constituting a part of the utility model are used to provide a further understanding of the utility model, and the schematic embodiments of the utility model and their descriptions are used to explain the utility model, and do not constitute improper limitations to the utility model. In the attached picture:
图1是根据本实用新型的空调系统的第一实施例原理示意图；Fig. 1 is a schematic diagram of the principle of the first embodiment of the air conditioning system according to the present invention;
图2是根据本实用新型的空调系统的第二实施例原理示意图；Fig. 2 is a schematic diagram of the principle of the second embodiment of the air conditioning system according to the present invention;
图3是根据本实用新型的空调系统的第三实施例原理示意图；Fig. 3 is a schematic diagram of the principle of the third embodiment of the air conditioning system according to the present invention;
图4是根据本实用新型的空调系统的第四实施例原理示意图；Fig. 4 is a schematic diagram of the principle of the fourth embodiment of the air conditioning system according to the present invention;
图5是根据本实用新型的空调系统的第五实施例原理示意图；Fig. 5 is a schematic diagram of the fifth embodiment of the air conditioning system according to the present invention;
图6是根据本实用新型的空调系统的第六实施例原理示意图；Fig. 6 is a schematic diagram of the principle of the sixth embodiment of the air conditioning system according to the present invention;
图7是根据本实用新型的空调系统的第七实施例原理示意图；Fig. 7 is a schematic diagram of the seventh embodiment of the air conditioning system according to the present invention;
图8是根据本实用新型的空调系统的第八实施例原理示意图；Fig. 8 is a schematic diagram of the eighth embodiment of the air conditioning system according to the present invention;
图9是根据本实用新型的空调系统的第九实施例原理示意图；Fig. 9 is a schematic diagram of the ninth embodiment of the air conditioning system according to the present invention;
图10是根据本实用新型的空调系统的第十实施例原理示意图；Fig. 10 is a schematic diagram of the principle of the tenth embodiment of the air conditioning system according to the present invention;
图11是根据本实用新型的空调系统的第十一实施例原理示意图；Fig. 11 is a schematic diagram of the eleventh embodiment of the air conditioning system according to the present invention;
图12是根据本实用新型的空调系统的第十二实施例原理示意图。Fig. 12 is a schematic diagram of the principle of the twelfth embodiment of the air conditioning system according to the present invention.
附图标记说明：Explanation of reference signs:
10、风机；20、压缩机；30、风机换流器；40、压缩机换流器；50、并网换流器；60、电网；70、隔离变压器；80、新型能源；90、储能单元。10. Fan; 20. Compressor; 30. Fan converter; 40. Compressor converter; 50. Grid-connected converter; 60. Power grid; 70. Isolation transformer; 80. New energy; 90. Energy storage unit.
具体实施方式Detailed ways
下面将参考附图并结合实施例来详细说明本实用新型。The utility model will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
如图1所示，根据本实用新型的空调系统第一实施例，包括一台风机10和一台压缩机20，空调系统还包括直流母线，以及与风机10对应连接的一台风机换流器30和与压缩机20对应连接的一台压缩机换流器40，风机换流器30和压缩机换流器40均与直流母线连接，压缩机换流器40驱动压缩机变频，从而实施空调系统的变频运行。在该实施例中，风机换流器30具有驱动风机10的逆变状态和回收风机10发电电能的整流状态。即在空调系统工作时，风机换流器30工作在逆变状态，驱动风机10对空调系统散热，当空调系统停止时，在风机10被风驱动发电的情况下，风机换流器30工作在整流状态，从而回收电能。即空调系统不工作时，风机成为一台发电机，从而使得空调系统更节能。As shown in Figure 1, according to the first embodiment of the air conditioning system of the present utility model, it includes a fan 10 and a compressor 20, the air conditioning system also includes a DC bus, and a fan inverter connected to the fan 10 30 and a compressor converter 40 correspondingly connected to the compressor 20, the fan converter 30 and the compressor converter 40 are both connected to the DC bus, and the compressor converter 40 drives the frequency conversion of the compressor to implement air conditioning The frequency conversion operation of the system. In this embodiment, the wind turbine converter 30 has an inverter state for driving the wind turbine 10 and a rectification state for recovering the electric energy generated by the wind turbine 10 . That is, when the air-conditioning system is working, the fan converter 30 works in the inverter state, driving the fan 10 to dissipate heat to the air-conditioning system; rectification state, thereby recovering electrical energy. That is, when the air conditioning system is not working, the fan becomes a generator, which makes the air conditioning system more energy-efficient.
进一步地，在第一实施例中，空调系统还包括并网换流器50，并网换流器50的第一端与电网60连接，并网换流器50的第二端与压缩机换流器40和风机换流器30均连接。即可以通过并网换流器50将风机10发电的电能输送到电网上。Further, in the first embodiment, the air conditioning system further includes a grid-connected converter 50, the first end of the grid-connected converter 50 is connected to the grid 60, and the second end of the grid-connected converter 50 is connected to the compressor. Both the converter 40 and the fan converter 30 are connected. That is, the electric energy generated by the fan 10 can be transmitted to the grid through the grid-connected converter 50 .
优选地，在第一实施例中，空调系统还包括隔离变压器70，隔离变压器70串联在电网60与并网换流器50之间，串联隔离变压器70能够提高空调系统的安全性，也能够防止干扰。并网换流器50为四象限换流器，风机换流器30和压缩机换流器40可以采用四象限换流器，也可以采用常规换流器。Preferably, in the first embodiment, the air conditioning system further includes an isolation transformer 70, the isolation transformer 70 is connected in series between the grid 60 and the grid-connected converter 50, the series isolation transformer 70 can improve the safety of the air conditioning system, and can also prevent interference. The grid-connected converter 50 is a four-quadrant converter, and the fan converter 30 and the compressor converter 40 may be four-quadrant converters or conventional converters.
优选地，结合图1所示，第一实施例的空调系统还可以包括新型能源80，新型能源80与直流母线连接。根据实际情况或控制能力，可以设置与新型能源80对应的换流器，即新型能源80通过相应的换流器与直流母线连接。新型能源80包括但不限于光伏、光热、风能、潮汐、地热和生物质能等清洁能源中的一种，即在直流母线处并接一种新型能源，实现空调系统能量尽量保证自给自足而不从市电索取。Preferably, as shown in FIG. 1 , the air conditioning system of the first embodiment may further include a new energy source 80 connected to a DC bus. According to the actual situation or control capability, a converter corresponding to the new energy source 80 can be installed, that is, the new energy source 80 is connected to the DC bus through the corresponding converter. New energy sources 80 include but are not limited to one of clean energy sources such as photovoltaics, solar heat, wind energy, tides, geothermal energy, and biomass energy. That is, a new energy source is connected to the DC bus to ensure self-sufficiency in air conditioning system energy as much as possible. Do not request from mains.
结合图2所示的第二实施例，在第一实施例的基础上，第二实施例的空调系统还可以包括储能单元90，储能单元90通过相应的换流器与直流母线连接，从而对能量回收，并供电，而且设置储能单元90可以将风机10发电产生的电能进行分级回收。With reference to the second embodiment shown in FIG. 2, on the basis of the first embodiment, the air conditioning system of the second embodiment may further include an energy storage unit 90, which is connected to the DC bus through a corresponding converter, Therefore, the energy is recovered and supplied with power, and the energy storage unit 90 is provided to recover the electric energy generated by the wind turbine 10 in stages.
结合图1和2所示的第一实施例和第二实施例来说明本实用新型的空调系统的工作原理和控制过程，当空调系统工作时，针对新型能源80的控制如下：The working principle and control process of the air-conditioning system of the present invention will be described in conjunction with the first embodiment and the second embodiment shown in Figures 1 and 2. When the air-conditioning system is working, the control for the new energy source 80 is as follows:
1、如果新型能源80的能量与空调负载需求匹配时，可以仅采用新型能源为空调供电。1. If the energy of the new energy source 80 matches the load demand of the air conditioner, only the new energy source can be used to power the air conditioner.
2、如果新型能源80能量大于空调负载需求时，可以采用如下方式控制：2. If the energy of the new energy 80 is greater than the load demand of the air conditioner, it can be controlled in the following way:
(1)如果系统不包含储能单元90，新型能源80多余能量并网发电；(1) If the system does not include the energy storage unit 90, the excess energy of the new energy source 80 is connected to the grid for power generation;
(2)如果系统包含储能单元90且储能单元90电荷不足需要充电时，新型能源80多余电量首先对储能单元90进行充电，仍有富余时再并网发电；(2) If the system includes an energy storage unit 90 and the charge of the energy storage unit 90 is insufficient and needs to be charged, the excess power of the new energy source 80 first charges the energy storage unit 90, and then connects to the grid for power generation when there is still a surplus;
(3)系统包含储能单元90，储能单元90也可以根据设定的与电网60联动的控制逻辑进行动作。(3) The system includes the energy storage unit 90 , and the energy storage unit 90 can also operate according to the set control logic linked with the power grid 60 .
3、如果新型能源80能量小于空调负载能量时：3. If the new energy 80% energy is less than the load energy of the air conditioner:
(1)如果系统不包含储能单元90，新型能源80不足部分由市电补充；(1) If the system does not include the energy storage unit 90, the insufficient part of the new energy source 80 will be supplemented by the city electricity;
(2)如果系统包含储能单元90，且储能单元90的电荷富足时，首先由储能单元90进行补充；如仍不满足空调需求，再由市电进行补充；(2) If the system includes an energy storage unit 90, and the electric charge of the energy storage unit 90 is sufficient, the energy storage unit 90 will first supplement it; if it still does not meet the air-conditioning requirements, it will be supplemented by the mains;
(3)如果系统包含储能单元90，储能单元90也可以根据设定的与电网联动的控制逻辑进行动作。(3) If the system includes an energy storage unit 90, the energy storage unit 90 can also operate according to the set control logic linked with the power grid.
当空调系统制动或不工作时，新型能源80能量全部进行并网发电，风机10发电电能根据以下情况回收：When the air conditioning system brakes or does not work, the energy of the new energy source 80 is all connected to the grid for power generation, and the power generated by the fan 10 is recovered according to the following conditions:
1、如果不包含储能单元90时，风机10发电电能通过一定的升压措施或PAWM交错调制等方式进行并网。1. If the energy storage unit 90 is not included, the electric energy generated by the wind turbine 10 is connected to the grid through certain boosting measures or PAWM interleaved modulation.
2、包含储能单元90时，风机10发电电能进行分级回收：2. When the energy storage unit 90 is included, the electric energy generated by the wind turbine 10 is recovered in stages:
(1)当风机反转能量小于某一设定阈值时，该能量可以通过储能单元90对应的DC/DC换流器，对储能单元90进行充电，将风机10发电电能通过储存的方式进行回收；(1) When the reverse energy of the wind turbine is less than a certain set threshold, the energy can be charged to the energy storage unit 90 through the DC/DC converter corresponding to the energy storage unit 90, and the electric energy generated by the wind turbine 10 can be stored to recycle;
(2)当风机10发电电能达到并网条件时，通过并网换流器50、隔离变压器70(该变压器视电能质量可选择安装)进行并网，供给网内其他负载使用；(2) When the electric energy generated by the wind turbine 10 reaches the grid-connected condition, it is connected to the grid through the grid-connected converter 50 and the isolation transformer 70 (the transformer can be optionally installed depending on the power quality), and is supplied to other loads in the grid;
(3)当风机10发电电能接近并网条件时，通过一定的升压方式或PAWM交错调制技术等对该能量进行回收并网。(3) When the electric energy generated by the wind turbine 10 is close to the grid connection condition, the energy is recovered and connected to the grid through a certain boost method or PAWM interleaved modulation technology.
另外，当电网高峰运行或需要支持，同时储能单元90余电充足时，可根据电网调度进行响应，进行错峰调峰运行，为电网安全提供一定的保障。In addition, when the power grid is running at a peak or needs to be supported, and the energy storage unit 90 has sufficient remaining power, it can respond according to the grid scheduling and perform peak-shifting and peak-shaving operation to provide a certain guarantee for the safety of the power grid.
通过上述控制方式，可以有效解决空调系统风机10发电电能较小的回收问题及在空调工作时不能进行发电的局限，兼顾空调系统供电的多样性，使空调系统尽量实现自给自足，不从市电取电；储能单元90的集成，能够有效提高风机10发电电能回收率及直接利用率，同时对电网提供一定的积极作用。Through the above control method, it can effectively solve the problem of recovery of the small power generated by the fan 10 of the air conditioning system and the limitation that the power cannot be generated when the air conditioner is working, taking into account the diversity of power supply of the air conditioning system, so that the air conditioning system can achieve self-sufficiency as much as possible, without relying on the mains power supply. The integration of power extraction and energy storage unit 90 can effectively improve the recovery rate and direct utilization rate of the electric energy generated by the wind turbine 10, and at the same time provide a certain positive effect on the power grid.
如图3和图4所示的第三和第四实施例中，一拖二空调系统(一台风机10、两台压缩机20)采用类似于第一和第二实施例的方式，对应设置风机换流器30、并网换流器50、新型能源80、储能单元90等装置，首先采用新型能源80，并回收空调系统不工作时风机10发电的电能，从而使得空调系统尽可能地自给自足，不消耗市电。In the third and fourth embodiments shown in Fig. 3 and Fig. 4, the one-to-two air-conditioning system (one blower fan 10, two compressors 20) adopts a mode similar to that of the first and second embodiments, and corresponding settings Devices such as fan converter 30, grid-connected converter 50, new energy source 80, and energy storage unit 90 first adopt new energy source 80, and recycle the electric energy generated by fan 10 when the air-conditioning system is not working, so that the air-conditioning system can be as efficient as possible. Self-sufficient, does not consume mains electricity.
如图5和6所示的第五和第六实施例中，双风机空调系统(两台风机10、一台压缩机20)也采用类似于第一和第二实施例的方式，对应设置风机换流器30、并网换流器50、新型能源80、储能单元90等装置，首先采用新型能源80，并回收空调系统不工作时风机10发电的电能，从而使得空调系统尽可能地自给自足，不消耗市电。In the fifth and sixth embodiments shown in Figures 5 and 6, the dual-fan air-conditioning system (two blowers 10, one compressor 20) also adopts a mode similar to that of the first and second embodiments, and the fans are set correspondingly The converter 30, the grid-connected converter 50, the new energy source 80, the energy storage unit 90 and other devices, first use the new energy source 80, and recover the electric energy generated by the fan 10 when the air conditioning system is not working, so that the air conditioning system is as self-sufficient as possible Self-sufficient, does not consume mains electricity.
如图7和8所示的第七和第八实施例的一拖多空调系统或者如图9和10所示的第九和第十实施例的多风机空调系统，以及图11和12所示第十一和第十二实施例中一拖多并有多台风机的空调系统中均可以采用类似于第一和第二实施例的方式，使得空调系统尽可能地自给自足，不消耗市电。The seventh and eighth embodiment shown in Figure 7 and 8 or the multi-fan air conditioning system of the ninth and tenth embodiment shown in Figure 9 and 10, and Figures 11 and 12 In the eleventh and twelfth embodiments, the air-conditioning system with multiple fans and multiple fans can adopt a method similar to that of the first and second embodiments, so that the air-conditioning system can be as self-sufficient as possible without consuming commercial power .
需要说明的是，在第三至第十二实施例中，风机10与风机换流器30可以一一对应连接，也可以多对一连接，即可以为每台风机10设置一台风机换流器30，也可以多台风机10共用一台风机换流器30；类似地，压缩机20与压缩机换流器40可以一一对应连接，也可以多对一连接，即可以为每台压缩机20设置一台压缩机换流器40，也可以为多台压缩机20共用一台压缩机换流器40。It should be noted that, in the third to twelfth embodiments, the fans 10 and the fan converters 30 can be connected in one-to-one correspondence, or in many-to-one connections, that is, one fan converter 30 can be set for each fan 10 30, or multiple fans 10 can share one fan converter 30; similarly, the compressor 20 and the compressor converter 40 can be connected in one-to-one correspondence, or in many-to-one connections, that is, each compressor The machine 20 is provided with a compressor converter 40, or a compressor converter 40 can be shared by multiple compressors 20.
从以上的描述中，可以看出，本实用新型上述的实施例实现了如下技术效果：From the above description, it can be seen that the above-mentioned embodiments of the utility model have achieved the following technical effects:
根据本实用新型的空调系统，通过设置与风机对应的风机换流器，在空调系统工作时，风机换流器工作在逆变状态，驱动风机对空调系统散热，当空调系统停止时，在风机被风驱动发电的情况下，风机换流器工作在整流状态，从而回收电能。即空调系统不工作时，风机成为一台发电机，从而使得空调系统更节能。According to the air conditioning system of the utility model, by setting the fan converter corresponding to the fan, when the air conditioning system is working, the fan converter works in the inverter state, driving the fan to dissipate heat to the air conditioning system. In the case of being driven by the wind to generate electricity, the fan converter works in a rectification state to recover electric energy. That is, when the air conditioning system is not working, the fan becomes a generator, which makes the air conditioning system more energy-efficient.
以上所述仅为本实用新型的优选实施例而已，并不用于限制本实用新型，对于本领域的技术人员来说，本实用新型可以有各种更改和变化。凡在本实用新型的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本实用新型的保护范围之内。The above descriptions are only preferred embodiments of the utility model, and are not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420851007.XUCN204555125U (en) | 2014-12-26 | 2014-12-26 | Air conditioning system |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420851007.XUCN204555125U (en) | 2014-12-26 | 2014-12-26 | Air conditioning system |
| Publication Number | Publication Date |
|---|---|
| CN204555125Utrue CN204555125U (en) | 2015-08-12 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420851007.XUExpired - LifetimeCN204555125U (en) | 2014-12-26 | 2014-12-26 | Air conditioning system |
| Country | Link |
|---|---|
| CN (1) | CN204555125U (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016101644A1 (en)* | 2014-12-26 | 2016-06-30 | 珠海格力电器股份有限公司 | Air conditioning system |
| WO2016101642A1 (en)* | 2014-12-26 | 2016-06-30 | 珠海格力电器股份有限公司 | Air conditioning system |
| WO2016101641A1 (en)* | 2014-12-26 | 2016-06-30 | 珠海格力电器股份有限公司 | Air conditioning system |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016101644A1 (en)* | 2014-12-26 | 2016-06-30 | 珠海格力电器股份有限公司 | Air conditioning system |
| WO2016101642A1 (en)* | 2014-12-26 | 2016-06-30 | 珠海格力电器股份有限公司 | Air conditioning system |
| WO2016101641A1 (en)* | 2014-12-26 | 2016-06-30 | 珠海格力电器股份有限公司 | Air conditioning system |
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| WO2016101644A1 (en) | Air conditioning system | |
| WO2016101641A1 (en) | Air conditioning system | |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | Granted publication date:20150812 | |
| CX01 | Expiry of patent term |