A driving device and refrigeration system for a refrigeration device

Abstract

A driving device and refrigeration system for a refrigeration device are disclosed, relating to the field of power technology. The driving device for the refrigeration device includes: a rectifier circuit, a first switching module, multiple second switching modules, and multiple inverters; wherein the multiple second switching modules and multiple inverters correspond one-to-one: the input terminal of the rectifier circuit is connected to an AC power supply, and the output terminal of the rectifier circuit is connected to the first switching module and the multiple second switching modules, used to rectify and boost the voltage of the AC power supply, as well as perform harmonic compensation and output; the first switching module is connected to the controller of the refrigeration device; each second switching module is connected to a refrigeration device in the refrigeration device through a corresponding inverter, and the refrigeration device connected to each second switching module is different. The solution provided in this application is used to reduce harmonic components on the line and ensure the safe operation of the refrigeration device and the power grid.

Description

Technical Field

[0001] This application relates to the field of power supply technology, and in particular to a driving device and refrigeration system for a refrigeration device. Background Technology

[0002] Data centers and similar equipment all require cooling devices to absorb the heat generated during operation, preventing damage to internal components due to overheating. Currently, cooling devices are primarily driven by a combination of uncontrolled rectifiers and inverters. This means that the grid's electrical energy is rectified by the uncontrolled rectifiers and inverted by the inverters. However, cooling devices are often inductive loads; for example, air conditioners often require motors to operate. Since motors are inductive devices, they carry a large amount of harmonic components on the power line, affecting the cooling equipment's performance and also impacting grid quality. Utility Model Content

[0003] This application provides a driving device and a refrigeration system for refrigeration equipment, used to reduce harmonic components on the line and ensure the safe operation of the refrigeration equipment and the power grid.

[0004] In a first aspect, embodiments of this application provide a driving device for a refrigeration device. This driving device can connect to and drive multiple refrigeration components, such as compressors and fans. The driving device for the refrigeration device may include: a fully controlled rectifier circuit, a first switching module, multiple second switching modules, and multiple inverters. The multiple second switching modules and the multiple inverters correspond one-to-one.

[0005] Specifically, the input terminal of the rectifier circuit is connected to an AC power source, and the output terminal of the rectifier circuit is connected to the first switching module and the plurality of second switching modules. It is used to rectify and boost the voltage of the AC power source, as well as perform harmonic compensation and output the voltage. The first switching module is connected to the controller of the refrigeration equipment. Each second switching module is connected to a refrigeration device in the refrigeration equipment through a corresponding inverter, and the refrigeration device connected to each second switching module is different.

[0006] Using the aforementioned equipment, when driving multiple refrigeration components within the refrigeration system, the AC power output from the AC power source, including the mains, can be rectified and boosted using rectifier devices. That is, the rectifier circuit incorporates a built-in boost circuit. Therefore, when the voltage and current are out of phase, harmonic compensation can be performed through the boost circuit to reduce harmonic components on the line, resulting in a stable DC voltage output. This ensures that the inverter's drive circuit can stably drive the refrigeration components. The reduction in harmonic components on the line also improves the power quality of the AC power supply, ensuring its safe operation.

[0007] In one possible design, the rectifier circuit includes an uncontrolled rectifier circuit and a boost circuit. Using this design, the configured boost circuit can compensate for harmonics in the power supply to the line, thereby reducing harmonic components on the line.

[0008] In one possible design, the rectifier circuit is a Vienna circuit. Using this design, the voltage boost function can be achieved by controlling the switching transistors in the Vienna circuit to turn them on and off, and harmonic compensation can be performed on the power supply to the line, thereby reducing harmonic components on the line.

[0009] In one possible design, the drive unit of the refrigeration equipment further includes an isolation circuit connected between the output of the rectifier circuit and the first switching module, and between the output of the rectifier circuit and the plurality of second switching modules. With this design, the isolation circuit can isolate the AC power supply from the electrical connections between the AC power supply and multiple components in the refrigeration equipment, so that the AC power supply can continue to operate normally for other connected loads in the event of a refrigeration equipment failure.

[0010] In one possible design, the rectifier circuit is also used to connect to an energy storage device or a new energy power generation system, for boosting the voltage output by the energy storage device or the new energy power generation system before outputting it. With this design, the rectifier circuit is equipped with a dedicated DC boost circuit. If the rectifier circuit is a Vienna circuit, it can be equivalent to three standard boost circuits. Therefore, the rectifier circuit has an independent DC port. Thus, the energy storage device or the new energy power generation system can connect to the rectifier circuit through the aforementioned DC port, and the energy storage device or the new energy power generation system can provide power and drive the operation of cooling equipment when the AC power supply fails.

[0011] In one possible design, the drive unit of the refrigeration equipment further includes the energy storage device. The drive unit of the refrigeration equipment can be externally connected to the energy storage device, or it can have the energy storage device built into it. This energy storage device can also supply power to the refrigeration equipment during peak electricity consumption periods when the AC power supply is connected to the load, and store electrical energy from the AC power supply during off-peak electricity consumption periods, thereby alleviating the supply pressure on the AC power supply.

[0012] In one possible design, the first switch module and the plurality of second switch modules include DC air switches.

[0013] In one possible design, the driving device of the refrigeration equipment further includes a voltage regulating circuit connected between the first switching module and the controller of the refrigeration equipment. With this design, the voltage regulating circuit can adjust the voltage amplitude of the stable DC power output from the rectifier circuit to the power supply voltage of the controller, thereby meeting the power requirements of the controller.

[0014] In one possible design, the voltage regulating circuit is used to connect to an electrically controlled valve in the refrigeration equipment. The electrically controlled valve can be connected to the refrigeration piping of the refrigeration device. When the controller and the electrically controlled valve are energized, the controller can adjust the flow rate of refrigerant through the refrigeration device by controlling the opening degree of the electrically controlled valve, thereby adjusting the refrigeration capacity.

[0015] In one possible design, the rectifier circuit has a boost function, so the output voltage amplitude of the rectifier circuit increases. If the cable of the DC input terminal of the inverter is reversed, it will cause damage to a large number of components on the line. In order to ensure the safe operation of the driving device of the refrigeration equipment, the driving device of the refrigeration equipment also includes a DC reverse connection protection circuit connected between the inverter and the rectifier.

[0016] Secondly, embodiments of this application provide a refrigeration system that can be located in a high-power device and is used to absorb the heat generated during the operation of the high-power device, thereby ensuring the safe operation of the high-power device. The refrigeration system may include a refrigeration device and a drive device for the refrigeration device provided in the first aspect of this application and any possible design thereof. The refrigeration device includes a controller and multiple refrigeration components, and the refrigeration unit can adjust the cooling capacity of the multiple refrigeration components.

[0017] Furthermore, the technical effects of the second aspect and any of its possible designs can be found in the technical effects of different designs in the first aspect of the embodiments of this application, and will not be repeated here. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A schematic diagram of the structure of a driving device for a refrigeration equipment provided in this application embodiment. Figure 1 ;

[0020] Figure 2 A schematic diagram of the structure of a driving device for a refrigeration equipment provided in this application embodiment. Figure 2 ;

[0021] Figure 3 This is a schematic diagram of a rectifier circuit provided in an embodiment of this application;

[0022] Figure 4A schematic diagram of the structure of a driving device for a refrigeration equipment provided in this application embodiment. Figure 3 ;

[0023] Figure 5 A schematic diagram of the structure of a driving device for a refrigeration equipment provided in this application embodiment. Figure 4 ;

[0024] Figure 6 This is a schematic diagram of an LLC circuit provided in an embodiment of this application. Detailed Implementation

[0025] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0026] The terminology used in the implementation section of this application is only for explaining specific embodiments of this application and is not intended to limit this application. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application.

[0027] The following explanations of some terms used in the embodiments of this application are provided to facilitate understanding by those skilled in the art.

[0028] (1) The terms “first”, “second”, etc., used in the embodiments of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in a sequence other than those illustrated or described herein.

[0029] (2) In the embodiments of this application, “multiple” refers to two or more, and other quantifiers are similar.

[0030] (3) In the embodiments of this application, “and / or” describes the relationship between the associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, or B exists alone. A and B can be singular or plural.

[0031] (4) In the embodiments of this application, "connection" can be understood as an electrical connection or a communication connection. An electrical connection between two electrical components can be a direct or indirect connection between the two electrical components. For example, A and B can be connected directly, or indirectly through one or more other electrical components, such as A and B being connected. Alternatively, A can be directly connected to C, and C can be directly connected to B, with A and B connected through C. A communication connection between two electrical components is a wireless connection between the two electrical components, that is, an electromagnetic connection between the two electrical components.

[0032] (5) The switching devices in this application embodiment can be one or more of various types of switching transistors, such as metal oxide semiconductor field effect transistors (MOSFETs), bipolar junction transistors (BJTs), insulated gate bipolar transistors (IGBTs), silicon carbide (SiC) transistors, and silicon controlled rectifiers (SCRs). These will not be listed individually in this application embodiment. The packaging of each switching transistor can be a single-transistor package or a multi-transistor package; this application embodiment does not impose any restrictions on this. Each switching transistor can include a first terminal, a second terminal, and a control terminal. The control terminal can control the switching transistor to turn on or off according to the received PWM signal. When the switching transistor is on, current can be transmitted between the first terminal and the second terminal; when the switching transistor is off, current cannot be transmitted between the first terminal and the second terminal. Taking a MOSFET as an example, the control terminal of the switching transistor is the gate, the first terminal of the switching transistor can be the source, and the second terminal can be the drain, or the first terminal can be the drain and the second terminal can be the source.

[0033] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. The driving device for the cooling equipment provided in the embodiments of this application can be located in the cooling system and drive multiple cooling components within the cooling equipment in the cooling system to operate. The cooling system can be located in multiple high-power devices, including a data center, and absorbs the heat generated during the operation of the high-power devices, preventing damage to components within the high-power devices due to overheating, ensuring the normal operation of the devices, and improving the efficiency of the high-power devices.

[0034] See Figure 1 The diagram shown is a structural schematic of a driving device for a refrigeration equipment provided in an embodiment of this application. Figure 1 As shown, the driving device of the refrigeration equipment may include: a rectifier circuit, a first switching module, multiple second switching modules, and multiple inverters. The multiple second switching modules and multiple inverters correspond one-to-one.

[0035] Specifically, the input terminal of the rectifier circuit is connected to an AC power source, and the output terminal is connected to a first switching module and multiple second switching modules. This is used to rectify and boost the voltage of the AC power source, as well as perform harmonic compensation and output the correct voltage. The first switching module is connected to the controller of the refrigeration equipment. Each second switching module is connected to a different refrigeration device within the refrigeration equipment via a corresponding inverter. Each second switching module connects to a different refrigeration device; that is, each refrigeration device is connected to a second switching module via an independent inverter. The refrigeration device can obtain the AC power required for operation through the inverter, and the second switching module can control the energizing time of the connected refrigeration device. The AC power source includes, but is not limited to, mains power, industrial and agricultural power, and residential power.

[0036] It should be understood that, Figure 1 The structure of the drive unit for the refrigeration equipment shown is merely an example. In actual applications, the drive unit for the refrigeration equipment can have a more advanced design. Figure 1 The additional components shown, such as the drive unit of the refrigeration equipment, may also include overload protection devices and short-circuit protection devices. Of course, the drive unit of the refrigeration equipment may also include other functional devices, which will not be described in detail here.

[0037] In practical applications, a refrigeration system can include multiple refrigeration devices. Each refrigeration device is connected to the output of a rectifier circuit via a second switching module and an inverter. The stable DC power output from the rectifier circuit is converted into AC power required for the operation of the refrigeration device by the inverter, thereby driving the refrigeration device. The controller of the refrigeration system is connected to the output of the rectifier circuit via a first switching module. The stable DC power output from the rectifier circuit powers the controller of the refrigeration system via the first switching module. After being powered, the controller can control the operation of each refrigeration device, thereby adjusting the cooling capacity of the refrigeration system to meet the cooling requirements of high-power devices. The multiple refrigeration devices in the refrigeration system can be, but are not limited to, compressors, fans, water pumps, and refrigerant pumps. The following explanation uses an example where the refrigeration devices in the refrigeration system are a compressor, fan, water pump, and refrigerant pump.

[0038] In one possible implementation, if the voltage amplitude of the stable DC output from the rectifier circuit is the same as the power supply voltage required by the controller of the refrigeration equipment, then the rectifier circuit can directly supply power to the controller of the refrigeration equipment. If the voltage amplitude of the stable DC output from the rectifier circuit is different from the power supply voltage amplitude required by the controller of the refrigeration equipment, the drive device of the refrigeration equipment may further include a voltage regulating circuit connected between the first switching module and the controller of the refrigeration equipment. This voltage regulating circuit can be configured as a boost circuit or a buck circuit according to the specific amplitude of the output voltage of the rectifier circuit and the power supply voltage of the controller. The voltage regulating circuit can convert the voltage amplitude of the DC output from the rectifier circuit into the power supply voltage of the controller, thereby meeting the power supply voltage requirements of the controller of the refrigeration equipment and ensuring that the controller of the refrigeration equipment can work normally.

[0039] In practical applications, the refrigerant flow rate within multiple refrigeration components of a refrigeration system is typically adjusted by regulating the opening of electrically controlled valves. (See [link to relevant documentation]). Figure 2 As shown in the embodiment of this application, the driving device for the refrigeration equipment also includes electrically controlled valves connected to multiple refrigeration components. These electrically controlled valves can be connected to a voltage regulating circuit and obtain power from the voltage regulating circuit. The controller can adjust the refrigerant flow rate through each refrigeration component by controlling the opening degree of the electrically controlled valves, thereby achieving the purpose of regulating the refrigeration capacity of the refrigeration equipment.

[0040] The driving device for the refrigeration equipment provided in this application embodiment can rectify and boost the AC power output from the AC power supply. Therefore, the rectifier circuit can include a rectification section and a boost section. The boost section can perform harmonic compensation when the voltage and current phases on the line are different. Thus, the boost operation of the boost section can reduce the harmonic components on the line. Compared with the rectification method using uncontrollable switching devices in the prior art, there are fewer harmonic components on the line. The rectifier circuit can output stable DC power to the inverter connected to the downstream, ensuring the stable operation of the refrigeration equipment connected to the inverter. Since the harmonic components on the line are reduced, the impact on the AC power supply connected to the rectifier circuit can also be reduced, improving the power quality of the AC power supply and ensuring the safe operation of other loads connected to the AC power supply.

[0041] In practical applications, because the rectifier circuit has a boost function, the voltage amplitude of the rectifier circuit output increases. At this time, the output terminal of the rectifier circuit can act as a DC power supply and provide power to multiple refrigeration devices in the refrigeration equipment through the second switching module. If the power receiving line at the inverter input terminal is reversed, that is, the end of the inverter input side receiving a high level is connected to the negative terminal of the DC power supply, and the end of the inverter input side receiving a low level is connected to the positive terminal of the DC power supply, a large number of devices will be damaged due to the large amplitude of the DC power supply. Therefore, the driving device of the refrigeration equipment provided in this application embodiment also includes a DC reverse connection protection circuit connected between the rectifier and the inverter. This DC reverse connection protection circuit can be connected between the rectifier and the second switching module, or between the second switching module and the inverter.

[0042] It should be noted that the DC reverse connection protection circuit can use a diode with unidirectional conductivity as the DC reverse connection protection device or other devices with the above-mentioned functions in the industry. This application does not impose any further restrictions here.

[0043] In practical applications, because the rectifier circuit has a boost function, the output voltage amplitude of the rectifier circuit increases. Therefore, the inverter model downstream of the rectifier circuit needs to be configured accordingly based on the output voltage amplitude of the rectifier circuit, for example, the withstand voltage value. During the operation of the refrigeration equipment's drive unit, if impact energy is generated on the line, it will cause damage to the refrigeration equipment's drive unit and the refrigeration equipment itself. Therefore, the inverter provided in this application embodiment can also be configured with a lightning protection device to protect the safety of the refrigeration equipment's drive unit and the refrigeration equipment. The lightning protection circuit can be a surge protector or surge protection circuit with lightning protection function, which will not be described in detail here.

[0044] In one implementation, the rectifier circuit can consist of two independent circuits. For example, the rectifier circuit may include an uncontrolled rectifier circuit composed of uncontrolled switching devices and a boost circuit. When the current and voltage in the circuit are out of phase, the boost circuit can perform harmonic compensation when the voltage and current on the line are out of phase, thereby providing a stable DC output to the inverter connected to the downstream.

[0045] The boost circuit can be a boost circuit or other circuits or chips in the industry with DC voltage boosting function; this application does not impose any restrictions on this. The uncontrollable switching device can be a diode or other devices in the industry with the above functions; this application does not impose any restrictions on this.

[0046] In some implementations, the rectifier circuit can be composed of a single circuit, such as a Vienna circuit, which rectifies and boosts the AC power output from an AC power source. A Vienna circuit consists of an inductor, uncontrolled switching devices, and electrically controlled switching devices. When the current and voltage phases in the circuit are different, harmonic compensation can be achieved by controlling the on and off states of the switching devices in the Vienna circuit, thereby providing a stable DC output to the inverter connected downstream. For example, as... Figure 3 The diagram shown illustrates one possible structure of a rectifier circuit using a Vienna circuit. (See also...) Figure 3 As shown, taking a three-phase AC power supply with AC power output as an example, see [link to example]. Figure 3 As shown, inductor L1, diodes D1 and D3, MOSFETs Q1 and Q2 complete the rectification and boosting of phase A AC power; inductor L2, diodes D3 and D4, MOSFETs Q3 and Q4 complete the rectification and boosting of phase B AC power; and inductor L3, diodes D5 and D6, MOSFETs Q5 and Q6 complete the rectification and boosting of phase C AC power.

[0047] It should be noted that, Figure 3 The Vienna circuit shown is an example of a three-phase AC power supply using a three-phase three-wire system for power transmission. Depending on the transmission method of the three-phase AC power supply and the selection of electrical control switching devices, the rectifier circuit provided in this application embodiment may also have other circuit structures, which are not limited here.

[0048] See also Figure 3 As shown, taking the rectification and boosting process of phase A AC power as an example, when the voltage amplitude of phase A AC power is lower than the voltage of the DC bus formed by capacitors C1 and C2, MOSFETs Q1 and Q2 can be turned on. The electrical energy of phase A AC power can be stored in inductor L1 through inductor L1, MOSFETs Q1 and Q2. When MOSFETs Q1 and Q2 are turned off, the electrical energy of phase A AC power is superimposed with the electrical energy stored in inductor L1 and output to the DC bus through diode D1, thereby completing the rectification and boosting process of phase A AC power.

[0049] It should be noted that the above Figure 3 The rectifier circuit structure shown is only an example. In actual use, the rectifier circuit can also adopt other circuit topologies or chips with the above functions in the industry. This application does not limit this too much.

[0050] In practical applications, a dedicated boost circuit can be configured inside the rectifier circuit, or a... Figure 3The Vienna circuit shown performs a boost conversion; therefore, the rectifier circuit has a DC port, which can be the output, input, or intermediate node of the rectifier circuit. For example, if the rectifier circuit consists of an uncontrolled rectifier circuit and a boost circuit, the DC port can be the connection point between the uncontrolled rectifier circuit and the boost circuit, or it can be the output of the boost circuit. If the rectifier circuit is a Vienna circuit, see [link to relevant documentation]. Figure 3 As shown, inductor L1, diodes D1 and D3, MOSFETs Q1 and Q2 can form a BOOST circuit; inductor L2, diodes D3 and D4, MOSFETs Q3 and Q4 can form a BOOST circuit; and inductor L3, diodes D5 and D6, MOSFETs Q5 and Q6 can form a BOOST circuit. Therefore, the ends of inductors L1, L2, and L3 connected to the AC power supply can serve as the DC port of the rectifier circuit, and the two ends of bus capacitors C1 and C2 can also serve as the DC port of the rectifier circuit. That is, the rectifier circuit provided in this embodiment can also be connected to an external DC power supply device, and the electrical energy output from the DC power supply can be used to drive the connected cooling equipment.

[0051] In some implementations, see Figure 4 As shown, the drive unit of the refrigeration equipment can also be connected to an external energy storage device or the drive unit of the refrigeration equipment can be equipped with an internal energy storage device. The energy storage device can be connected to the DC port of the rectifier circuit. When the AC power supply connected to the drive unit of the refrigeration equipment is normal, the AC power supply provides power and drives the refrigeration equipment to operate. When the AC power supply connected to the drive unit of the refrigeration equipment fails, the energy storage device provides power and drives the refrigeration equipment to operate.

[0052] In practical applications, the energy storage device can be charged by a separate DC power supply, or it can obtain charging energy when the AC power supply connected to the refrigeration equipment's drive unit is normal, ensuring that the energy storage device has sufficient power to supply the refrigeration equipment in the event of an AC power failure. If the energy storage device can obtain power when the AC power supply is normal, it can also provide power to drive the refrigeration equipment during peak electricity consumption periods of the AC power-connected equipment, and receive and store electrical energy from the AC grid during off-peak electricity consumption periods of the AC power-connected equipment, thereby alleviating the supply pressure on the AC power supply.

[0053] In one example, the voltage output by the energy storage device can be converted into a DC bus voltage by controlling the on-time and off-time of the switching devices inside the boost circuit. In this case, the energy storage device may consist only of a battery pack, which may be composed of multiple batteries connected in series or in parallel.

[0054] In another example, if the boost circuit cannot meet the conversion between the battery pack and the DC bus voltage, the energy storage device includes not only the battery pack but also a battery charging and discharging circuit. This battery charging and discharging circuit is connected between the battery pack and the DC port of the rectifier circuit. It can control the charging and discharging time of the battery pack, convert the voltage of the battery pack to the voltage required by the rectifier circuit, and convert the voltage of the DC port of the rectifier circuit to the charging voltage of the battery pack.

[0055] In some implementations, see Figure 5 As shown, the drive unit of the refrigeration equipment can also be connected to an external new energy power generation system. This new energy power generation system can be connected to the DC port of the rectifier circuit. This new energy power generation system can provide power and drive the refrigeration equipment to operate when the AC power supply fails.

[0056] Based on the above description, it can be seen that the built-in boost section in the rectifier circuit can perform harmonic compensation on the power supply of the line. Therefore, even when the load connected to the downstream end of the rectifier circuit is an inductive load, the normal operation of the load can still be guaranteed, and the impact on the AC power supply connected to the drive unit of the refrigeration equipment can be reduced, thereby improving the quality of the AC power supply.

[0057] In practical applications, the rectifier circuit is mainly connected to the downstream load through the first switching module and the second switching module. Therefore, the power supply timing of the load can be controlled by controlling the closing and opening of the first switching module and the multiple second switching modules. The first switching module and the multiple second switching modules can be selected as air switches or other switching devices with switching functions, and this application does not impose any further restrictions.

[0058] In some embodiments, the AC power supply is electrically connected to the refrigeration equipment through the driving device of the refrigeration equipment. In actual use, the AC power supply can also be connected to multiple other loads. When the refrigeration equipment fails, the AC power supply may fail, affecting the normal operation of other loads. Therefore, the driving device of the refrigeration equipment provided in this application embodiment also includes an isolation circuit for realizing electrical isolation between the AC power supply and the refrigeration equipment. The isolation circuit can be connected between the output terminal of the rectifier circuit and the first switching module, and between the output terminal of the rectifier circuit and multiple second switching modules.

[0059] It should be noted that the isolation circuit can use LLC circuits or other circuits or chips with electrical isolation in the industry; see [link to relevant documentation]. Figure 6 The diagram shown is a schematic of one type of LLC circuit. Of course, other LLC circuit topologies can also be used, and this application does not impose any restrictions on them.

[0060] In practical applications, all components of the refrigeration equipment's drive unit can be fixed on a rack. The rack is equipped with fixed interfaces, through which the AC power supply, the various refrigeration components within the refrigeration equipment, and the refrigeration equipment's controller can be connected to the refrigeration equipment's drive unit. In another implementation, the refrigeration equipment's drive unit can also be configured as a flexible and detachable device. For example, the rectifier circuit, the first switch module, and the second switch module of the refrigeration equipment's drive unit can be fixed within a rack, and multiple switch modules within the drive unit can be fixedly connected to the drive unit. Of course, the refrigeration equipment's drive unit can also be installed in other ways, which are not limited in this application.

[0061] Based on the above description, this application also provides a cooling system, which can be located in a high-power device and is used to absorb the heat generated during the operation of the high-power device. The cooling system may include a cooling device and a drive unit for the aforementioned cooling device. The cooling device includes multiple cooling components.

[0062] Specifically, one end of the drive unit of the refrigeration equipment can be connected to an AC power source, and the other end of the drive unit can be connected to multiple refrigeration components and controllers in the refrigeration equipment. The drive unit can provide power to the multiple refrigeration components and controllers in the refrigeration equipment, thereby ensuring the normal operation of the refrigeration equipment.

[0063] In one example, the refrigeration equipment and its drive unit can be integrated inside a cabinet equipped with a power interface, through which an external AC power source can connect to the refrigeration equipment's drive unit.

[0064] In another example, the refrigeration equipment and its drive unit can also be integrated in different cabinets. The cabinet containing the refrigeration equipment drive unit is equipped with a power interface and a load interface. An external AC power supply can be connected to the refrigeration equipment drive unit through the power interface. Multiple refrigeration components and controllers in the refrigeration equipment can be connected to the refrigeration equipment drive unit through the load interface.

[0065] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A driving device for a refrigeration equipment, characterized in that, include: The system comprises a rectifier circuit, a first switching module, multiple second switching modules, and multiple inverters; wherein the multiple second switching modules and the multiple inverters correspond one-to-one. The input terminal of the rectifier circuit is connected to an AC power source, and the output terminal of the rectifier circuit is connected to the first switching module and the plurality of second switching modules. It is used to rectify and boost the voltage of the AC power source, as well as perform harmonic compensation and output the voltage. The first switch module is connected to the controller of the refrigeration equipment; Each second switch module is connected to a refrigeration device in the refrigeration equipment via a corresponding inverter, and the refrigeration device connected to each second switch module is different.

2. The apparatus according to claim 1, characterized in that, The rectifier circuit includes an uncontrolled rectifier circuit and a boost circuit.

3. The apparatus according to claim 1, characterized in that, The rectifier circuit is a Vienna circuit.

4. The apparatus according to claim 2 or 3, characterized in that, The driving device of the refrigeration equipment further includes an isolation circuit, which is connected between the output terminal of the rectifier circuit and the first switching module, and between the output terminal of the rectifier circuit and the plurality of second switching modules.

5. The apparatus according to claim 2 or 3, characterized in that, The rectifier circuit is also used to connect to an energy storage device or a new energy power generation system, and to boost the voltage output by the energy storage device or the new energy power generation system before outputting it.

6. The apparatus according to claim 1, characterized in that, The first switch module and the plurality of second switch modules include DC air switches.

7. The apparatus according to claim 2, characterized in that, The driving device of the refrigeration equipment also includes a voltage regulating circuit connected between the first switching module and the controller of the refrigeration equipment.

8. The apparatus according to claim 7, characterized in that, The voltage regulating circuit is also used to connect to the electrically controlled valve in the refrigeration equipment.

9. The apparatus according to claim 1, characterized in that, The driving device of the refrigeration equipment also includes a DC reverse connection protection circuit connected between the inverter and the rectifier circuit.

10. A refrigeration system, characterized in that, The invention includes a refrigeration device and a drive device for the refrigeration device as described in any one of claims 1 to 9, wherein the refrigeration device includes a controller and a plurality of refrigeration components.

Images