A power converter, control method, and related devices

Abstract

The application discloses a power converter, a control method and related devices. The power converter comprises a first cabinet and a second cabinet. The first cabinet comprises a first power supply circuit, a first heat dissipation device and a second heat dissipation device. The second cabinet comprises a second power supply circuit, a third heat dissipation device and a fourth heat dissipation device. The first heat dissipation device and the third heat dissipation device are connected to the first power supply circuit. The second heat dissipation device and the fourth heat dissipation device are connected to the second power supply circuit. In this way, by cross-supplying the heat dissipation devices in the first cabinet and the second cabinet, in the case that the first power supply circuit or the second power supply circuit is powered off, there is a heat dissipation device that can continue to operate in the first cabinet and the second cabinet, and the heat dissipation device that continues to operate can be used to cool the inside of the power converter, thereby avoiding damage to components of the power converter due to excessively high temperature, and improving the safety and reliability of the power converter.

Description

Technical Field

[0001] This application relates to the field of power converter technology, and in particular to a power converter, control method and related apparatus. Background Technology

[0002] A power converter is a device that converts electrical energy from one form (such as voltage, current, or frequency) to another. During operation, excessively high internal temperatures can negatively impact the performance and efficiency of the converter's components, and may even damage them. Therefore, heat dissipation devices are necessary to cool the power converter during operation.

[0003] However, in related technologies, when the power supply circuit of the heat dissipation device is de-energized, the heat dissipation device will stop working, causing the internal temperature of the power converter to rise, which in turn will damage the components of the power converter. Summary of the Invention

[0004] In view of the above problems, this application provides a power converter, control method and related device, which aims to solve the problem of the internal temperature of the power converter rising due to power outage, which in turn leads to the damage of the components of the power converter.

[0005] The embodiments of this application disclose the following technical solutions:

[0006] In a first aspect, embodiments of this application provide a power converter, which includes a first cabinet and a second cabinet. The first cabinet includes a first power supply circuit, a first heat dissipation device, and a second heat dissipation device. The second cabinet includes a second power supply circuit, a third heat dissipation device, and a fourth heat dissipation device. The first heat dissipation device and the third heat dissipation device are connected to the first power supply circuit, and the second heat dissipation device and the fourth heat dissipation device are connected to the second power supply circuit.

[0007] In conjunction with the first aspect, in one possible implementation, it further includes: a controller for increasing the fan speed of the second heat dissipation device in the event of a first power supply circuit failure and a first operating state of the first heat dissipation device being stopped; the first operating state is determined by at least one of a first temperature of the first cabinet or a first fan speed.

[0008] In the event of a failure in the second power supply circuit and the second operating state of the second heat dissipation device being stopped, the airflow speed of the first heat dissipation device is increased; the second operating state is determined by at least one of the first temperature or the first airflow speed.

[0009] In conjunction with the first aspect, in one possible implementation, it further includes: a controller for increasing the fan speed of the fourth heat dissipation device in the event of a first power supply circuit failure and a third operating state of the third heat dissipation device being stopped; the third operating state is determined by at least one of a second temperature of the second cabinet or a second fan speed.

[0010] In the event of a failure in the second power supply circuit and the fourth operating state of the fourth heat dissipation device being stopped, the fan speed of the third heat dissipation device is increased; the fourth operating state is determined by at least one of the second temperature or the second fan speed.

[0011] In conjunction with the first aspect, in one possible implementation, it further includes: a controller for increasing the airflow speed of at least one of the second or fourth heat dissipation devices when a first power supply circuit fails and both the first operating state of the first heat dissipation device and the third operating state of the third heat dissipation device are stopped; the first operating state is determined by at least one of the first temperature or the first airflow speed of the first cabinet, and the third operating state is determined by at least one of the second temperature or the second airflow speed of the second cabinet.

[0012] In the event of a failure in the second power supply circuit, and the fact that both the second operating state of the second heat dissipation device and the fourth operating state of the fourth heat dissipation device are stopped, the airflow speed of at least one of the first or third heat dissipation devices is increased; the second operating state is determined by at least one of the first temperature or the first airflow speed, and the fourth operating state is determined by at least one of the second temperature or the second airflow speed.

[0013] In conjunction with the first aspect, in one possible implementation, the controller is configured to determine a first duty cycle of the first heat dissipation device or a second duty cycle of the second heat dissipation device based on at least one of a first temperature or a first wind speed; wherein the first temperature is positively correlated with the first duty cycle, the first temperature is positively correlated with the second duty cycle, the first wind speed is negatively correlated with the first duty cycle, and the first wind speed is negatively correlated with the second duty cycle.

[0014] In conjunction with the first aspect, in one possible implementation, the controller is configured to determine a third duty cycle of the third heat dissipation device or a fourth duty cycle of the fourth heat dissipation device based on at least one of a second temperature or a second wind speed; wherein the second temperature is positively correlated with the third duty cycle, the second temperature is positively correlated with the fourth duty cycle, the second wind speed is negatively correlated with the third duty cycle, and the second wind speed is negatively correlated with the fourth duty cycle.

[0015] In conjunction with the first aspect, in one possible implementation, the first power supply circuit is a DC-DC converter circuit, and the second power supply circuit is an AC-DC converter circuit; the first side of the DC-DC converter circuit is connected to the DC side of the power converter, the second side of the DC-DC converter circuit is connected to the first heat dissipation device and the third heat dissipation device, the AC side of the AC-DC converter circuit is connected to the AC side of the power converter, and the DC side of the AC-DC converter circuit is connected to the second heat dissipation device and the fourth heat dissipation device.

[0016] Secondly, embodiments of this application provide a control method for a power converter. The power converter includes a first cabinet and a second cabinet. The first cabinet includes a first power supply circuit, a first heat dissipation device, and a second heat dissipation device. The second cabinet includes a second power supply circuit, a third heat dissipation device, and a fourth heat dissipation device. The first heat dissipation device and the third heat dissipation device are connected to the first power supply circuit, and the second heat dissipation device and the fourth heat dissipation device are connected to the second power supply circuit.

[0017] Control methods include:

[0018] In the event of a failure in the first power supply circuit and the first operating state of the first heat dissipation device being stopped, the airflow speed of the second heat dissipation device is increased; the first operating state is determined by at least one of the first temperature of the first cabinet or the first airflow speed.

[0019] In the event of a failure in the second power supply circuit and the second operating state of the second heat dissipation device being stopped, the airflow speed of the first heat dissipation device is increased; the second operating state is determined by at least one of the first temperature or the first airflow speed.

[0020] In conjunction with the second aspect, in one possible implementation, the method also includes:

[0021] In the event of a failure in the first power supply circuit and the third operating state of the third heat dissipation device being stopped, the fan speed of the fourth heat dissipation device is increased; the third operating state is determined by at least one of the second temperature or the second fan speed of the second cabinet.

[0022] In the event of a failure in the second power supply circuit and the fourth operating state of the fourth heat dissipation device being stopped, the fan speed of the third heat dissipation device is increased; the fourth operating state is determined by at least one of the second temperature or the second fan speed.

[0023] In conjunction with the second aspect, in one possible implementation, the method further includes:

[0024] In the event of a first power supply circuit failure, and both the first operating state of the first heat dissipation device and the third operating state of the third heat dissipation device being stopped, the fan speed of at least one of the second or fourth heat dissipation devices is increased; the first operating state is determined by at least one of the first temperature or the first fan speed of the first cabinet, and the third operating state is determined by at least one of the second temperature or the second fan speed of the second cabinet.

[0025] In the event of a failure in the second power supply circuit, and the fact that both the second operating state of the second heat dissipation device and the fourth operating state of the fourth heat dissipation device are stopped, the airflow speed of at least one of the first or third heat dissipation devices is increased; the second operating state is determined by at least one of the first temperature or the first airflow speed, and the fourth operating state is determined by at least one of the second temperature or the second airflow speed.

[0026] Thirdly, embodiments of this application provide a control device, including a processor and a memory, wherein the processor is connected to the memory, the memory is used to store programs, instructions or code, and the processor is used to execute the programs, instructions or code in the memory to complete the control method of the power converter as described in the first aspect.

[0027] Fourthly, embodiments of this application provide a computer-readable storage medium storing a computer program, which is loaded by a processor to execute the control method of the power converter as described in the first aspect.

[0028] Beneficial effects:

[0029] The power converter provided in this application includes a first cabinet and a second cabinet. The first cabinet includes a first power supply circuit, a first heat dissipation device, and a second heat dissipation device. The second cabinet includes a second power supply circuit, a third heat dissipation device, and a fourth heat dissipation device. The first heat dissipation device and the third heat dissipation device are connected to the first power supply circuit, and the second heat dissipation device and the fourth heat dissipation device are connected to the second power supply circuit.

[0030] Thus, in this embodiment, by connecting the two heat dissipation devices (the first heat dissipation device and the second heat dissipation device) of the first cabinet to different power supply circuits, and connecting the two heat dissipation devices (the third heat dissipation device and the fourth heat dissipation device) of the second cabinet to different power supply circuits, the heat dissipation devices in the first cabinet and the second cabinet are cross-powered. In the event of a power failure in either the first or second power supply circuit, there is a heat dissipation device in both the first and second cabinets that can continue to operate. This operating heat dissipation device can be used to cool the inside of the power converter, preventing the components of the power converter from being damaged due to excessive temperature, and improving the safety and reliability of the power converter. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the 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.

[0032] Figure 1 This is a schematic diagram of the structure of a power converter provided in an embodiment of this application;

[0033] Figure 2 A schematic diagram illustrating a connection method for a power supply circuit provided in an embodiment of this application;

[0034] Figure 3 This is a schematic diagram of another power converter provided in an embodiment of this application;

[0035] Figure 4 A flowchart illustrating a control method for a power converter provided in an embodiment of this application;

[0036] Figure 5 A schematic diagram illustrating a method for determining the duty cycle according to an embodiment of this application;

[0037] Figure 6 This is a schematic diagram of the structure of a control device provided in an embodiment of this application. Detailed Implementation

[0038] During the operation of a power converter, the temperature of its internal cavity affects the performance and efficiency of its components. As an example, taking an inverter as an example, suppose the power supply circuit for the cooling system fails due to over- or under-voltage issues. The inverter's internal cooling system generates significant heat due to insufficient heat dissipation. This excessive heat may damage the inverter's drive module and reactors, or even cause the inverter to malfunction and burn out, thus reducing its safety and reliability.

[0039] To address the aforementioned problems, embodiments of this application provide a power converter, a control method, and related devices. The power converter includes a first cabinet and a second cabinet. The first cabinet includes a first power supply circuit, a first heat dissipation device, and a second heat dissipation device. The second cabinet includes a second power supply circuit, a third heat dissipation device, and a fourth heat dissipation device. The first and third heat dissipation devices are connected to the first power supply circuit, and the second and fourth heat dissipation devices are connected to the second power supply circuit.

[0040] Thus, in this embodiment, by connecting the two heat dissipation devices (the first heat dissipation device and the second heat dissipation device) of the first cabinet to different power supply circuits, and connecting the two heat dissipation devices (the third heat dissipation device and the fourth heat dissipation device) of the second cabinet to different power supply circuits, the heat dissipation devices in the first cabinet and the second cabinet are cross-powered. In the event of a power failure in either the first or second power supply circuit, there is a heat dissipation device in both the first and second cabinets that can continue to operate. This operating heat dissipation device can be used to cool the inside of the power converter, preventing the components of the power converter from being damaged due to excessive temperature, and improving the safety and reliability of the power converter.

[0041] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0042] See Figure 1 This figure is a schematic diagram of the structure of a power converter provided in an embodiment of this application, combined with... Figure 1 As shown, the power converter 10 provided in this application embodiment may include: a first cabinet 11 and a second cabinet 12. The first cabinet includes: a first power supply circuit 111, a first heat dissipation device 112 and a second heat dissipation device 113. The second cabinet 12 includes: a second power supply circuit 121, a third heat dissipation device 122 and a fourth heat dissipation device 123.

[0043] The first heat dissipation device 112 and the third heat dissipation device 122 are connected to the first power supply circuit, and the second heat dissipation device 113 and the fourth heat dissipation device 123 are connected to the second power supply circuit.

[0044] In this embodiment, the first cabinet 11 is located at the top of the second cabinet 12. It should be understood that the second cabinet 12 and the first cabinet 11 are sequentially distributed vertically from bottom to top, as follows: Figure 1 As shown. In one possible implementation, the first cabinet 11 and the second cabinet 12 can also be distributed in other ways. As an example, the second cabinet 12 and the first cabinet 11 are distributed vertically from top to bottom, or the first cabinet 11 and the second cabinet 12 are distributed in directions other than the vertical direction, without specific limitations here.

[0045] It should be noted that, in the embodiments of this application, the power converter may be, but is not limited to, an inverter, and no specific limitation is made here.

[0046] The term "heat dissipation device" refers to a device used to dissipate heat from the inside of a power converter, such as an axial fan, a centrifugal fan, a mixed-flow fan, etc., without any specific limitation here.

[0047] A power supply circuit refers to a device used to provide electrical energy to a heat dissipation device. The first power supply circuit differs from the second power supply circuit. In one possible implementation, it combines... Figure 2 As shown, the first power supply circuit 11 can be a DC-DC converter 21, and the second power supply circuit 12 can be an AC-DC converter 22. The first side of the DC-DC converter 21 is connected to the DC side of the power converter, and the second side of the DC-DC converter 21 is connected to the first heat sink 112 and the third heat sink 122. The AC side of the AC-DC converter 22 is connected to the AC side of the power converter, and the DC side of the AC-DC converter 22 is connected to the second heat sink 113 and the fourth heat sink 123.

[0048] In this implementation, the power supply circuit can draw power from either the DC or AC side of the power converter to power the heat dissipation device. However, since the heat dissipation device cannot be directly connected to the DC side or the AC side of the power converter, in this embodiment, a DC-DC converter circuit can be used to convert the voltage on the DC side of the power converter into the operating voltage of the heat dissipation device (i.e., the first and third heat dissipation devices), and an AC-DC converter circuit can be used to convert the voltage on the AC side of the power converter into the operating voltage of the heat dissipation device (i.e., the second and fourth heat dissipation devices).

[0049] In this way, on the one hand, there is no need to set up an additional independent power supply, reducing costs; on the other hand, it is possible to provide power to the first, second, third, and fourth heat dissipation devices while reducing costs.

[0050] It should be understood that by connecting the first heat dissipation device in the first cabinet and the third heat dissipation device in the second cabinet to the first power supply circuit, and by connecting the second heat dissipation device in the first cabinet and the fourth heat dissipation device in the second cabinet to the second power supply circuit, it is possible to ensure that there is a normally operating heat dissipation device in both the first and second cabinets even if either the first or second power supply circuit is de-energized, thereby allowing the normally operating heat dissipation device to cool the corresponding cabinet.

[0051] As an example, suppose the first power supply circuit is de-energized while the second power supply circuit is energized normally. In this case, the first and third heat dissipation devices connected to the first power supply circuit will stop operating, but the second and fourth heat dissipation devices connected to the second power supply circuit can still operate normally. At this time, the first cabinet can be cooled by the second heat dissipation device, and the second cabinet can be cooled by the fourth heat dissipation device.

[0052] In this embodiment of the application, by cross-supplying the two heat dissipation devices in the first cabinet with the two heat dissipation devices in the second cabinet, the components of the power converter can be prevented from being damaged due to excessive temperature, thereby improving the safety and reliability of the power converter.

[0053] Based on the power converter provided in the above embodiments, in order to further improve the safety and reliability of the components in the first cabinet, in one possible implementation, the power converter may further include: a controller.

[0054] A controller is a device, apparatus, or program used to manage and control other components or circuits. In the embodiments of this application, the controller can be an external controller, a controller integrated separately inside the power converter, or the controller of the power converter itself; no specific limitation is made here.

[0055] In one possible implementation, the controller can be an FPGA controller. An FPGA (Field-Programmable Gate Array) controller is a highly flexible programmable logic device. FPGA controllers can be flexibly configured and customized according to specific application requirements to achieve optimized control logic. Simultaneously, FPGA controllers have parallel processing capabilities, enabling them to handle multiple tasks simultaneously, improving system response speed and computational power.

[0056] The controller is used to increase the airflow speed of the second heat dissipation device 113 when the first power supply circuit 111 fails and the first operating state of the first heat dissipation device 112 is stopped.

[0057] A power supply circuit fault refers to a malfunction in the power supply circuit itself, such as a short circuit, over / under voltage fault, or hardware failure, etc., without being specifically limited to these. In the embodiments of this application, a power supply circuit fault may result in the inability to supply power to the corresponding heat dissipation device, thereby causing the corresponding heat dissipation device to stop operating.

[0058] Operating status refers to whether the heat dissipation device is running or stopped. First temperature refers to the temperature inside the first cabinet, and first airflow speed refers to the speed of airflow in the air ducts of the first cabinet.

[0059] It should be understood that, under normal operating conditions (i.e., both the first and second power supply circuits are powered normally), the first temperature of the first heat dissipation device and the second heat dissipation device in the first cabinet should be less than or equal to the first preset temperature, and the first airflow should be greater than or equal to the first preset airflow. When the first or second power supply circuit fails, the first or second heat dissipation device in the first cabinet can still operate normally (i.e., the second heat dissipation device operates normally when the first power supply circuit fails; or the first heat dissipation device operates normally when the second power supply circuit fails). In this case, the first temperature of the first cabinet should exceed the first preset temperature, and the first airflow in the first cabinet should be less than the preset airflow.

[0060] As an example, assuming that both the first and second power supply circuits are normal, the first temperature is 30 degrees Celsius, the first wind speed is 10 meters per second, the first preset temperature is 35 degrees Celsius, and the first preset wind speed is 8 meters per second; assuming that the first power supply circuit is de-energized, then the first operating state of the first heat dissipation device is stopped, at which time the first temperature may be 40 degrees Celsius and the first wind speed may be 5 meters per second.

[0061] Therefore, the first operating state can be determined by at least one of the first temperature or the first wind speed of the first cabinet 11.

[0062] In one possible implementation, the first operating state can be determined by a first temperature. For example, it can be determined whether the first temperature is greater than a first preset temperature, or whether the rate of temperature change of the first temperature within a preset time is greater than the rate of temperature change of the first preset temperature, to determine whether the first operating state is running or stopped. The first preset temperature refers to the maximum temperature allowed when the first heat dissipation device is operating normally, and the first preset temperature change rate refers to the maximum rate of temperature change allowed when the first heat dissipation device is operating normally. Wherein, if the first temperature is greater than the first preset temperature, or the rate of temperature change of the first temperature within a preset time is greater than the rate of temperature change of the first preset temperature, then the first operating state is stopped.

[0063] As an example, assuming the first preset temperature is 35 degrees Celsius and the first preset temperature change rate is 2 degrees Celsius per second, if the first temperature of the first cabinet is 40 degrees Celsius and the temperature change rate within the preset time is 10 degrees Celsius per second, then it indicates that the first heat dissipation device has stopped operating, that is, the first operating state is stopped.

[0064] In one possible implementation, the first operating state can be determined by a first wind speed. For example, it can be determined whether the first wind speed is greater than a first preset wind speed, or whether the rate of change of the first wind speed within a preset time is greater than the first preset rate of change of the wind speed, to determine whether the first operating state is running or stopped. The first preset wind speed refers to the maximum wind speed allowed when the first heat dissipation device is operating normally, and the first preset rate of change of the wind speed refers to the maximum rate of change of the wind speed allowed when the first heat dissipation device is operating normally. Specifically, when the first wind speed is less than the first preset wind speed, or when the rate of change of the first wind speed within a preset time is greater than the first preset rate of change of the wind speed, the first operating state is stopped.

[0065] As an example, assuming the first preset wind speed is 8 meters per second and the first preset wind speed change rate is 4 meters per second squared, if the first wind speed of the first cabinet is 5 meters per second and the wind speed change rate within the preset time is 8 meters per second squared, then it indicates that the first heat dissipation device has stopped operating, that is, the first operating state is stopped.

[0066] In one possible implementation, the first operating state can be determined by a first temperature and a first wind speed. For example, it can be determined whether the first temperature is greater than a first preset temperature and whether the first wind speed is greater than a first preset wind speed; or, it can be determined whether the first temperature is greater than a first preset temperature and whether the rate of change of the first wind speed within a preset time is greater than a first preset wind speed change rate; or, it can be determined whether the rate of change of the first temperature within a preset time is greater than a first preset temperature change rate and whether the first wind speed is greater than a first preset wind speed; or, it can be determined whether the rate of change of the first temperature within a preset time is greater than a first preset temperature change rate and whether the rate of change of the first wind speed within a preset time is greater than a first preset wind speed change rate.

[0067] Wherein, if the first temperature is less than or equal to the first preset temperature, and the rate of change of the first temperature within a preset time is less than or equal to the rate of change of the first preset temperature, and the first wind speed is greater than or equal to the first preset wind speed, and the rate of change of the first wind speed within a preset time is less than or equal to the rate of change of the first preset wind speed, then the first operating state is operating; if, after combining the four conditions in pairs, at least one condition in any combination is opposite, then the first operating state is stopped.

[0068] It should be understood that in the event of a failure in the first power supply circuit, it is also necessary to determine the first operating state of the first heat dissipation device. If the first operating state is "operating," it indicates that the failure in the first power supply circuit will not affect the first heat dissipation device, and there is no need to increase the fan speed of the second heat dissipation device to achieve the purpose of cooling. If the first operating state is "stopped," it indicates that the failure in the first power supply circuit cannot supply power to the first heat dissipation device normally, and the first heat dissipation device stops operating. In this case, it is necessary to increase the fan speed of the second heat dissipation device to achieve the purpose of cooling.

[0069] The controller is used to increase the airflow speed of the first heat dissipation device 112 when the second power supply circuit 121 fails and the second operating state of the second heat dissipation device 113 is stopped.

[0070] The second operating state is determined by at least one of the first temperature or the first wind speed. It should be noted that the method for determining the second operating state is the same as that for determining the first operating state; for related explanations, please refer to the explanation of the first operating state, which will not be repeated here.

[0071] It should be understood that in the event of a fault in the second power supply circuit, it is also necessary to determine the second operating state of the first heat dissipation device. If the second operating state is "operating," it indicates that the fault in the second power supply circuit will not affect the second heat dissipation device, and there is no need to increase the fan speed of the first heat dissipation device to achieve the purpose of cooling. If the second operating state is "stopped," it indicates that the fault in the second power supply circuit cannot supply power to the second heat dissipation device normally, and the second heat dissipation device stops operating. In this case, it is necessary to increase the fan speed of the first heat dissipation device to achieve the purpose of cooling.

[0072] In this embodiment, when the first power supply circuit fails and the first operating state is stopped, the fan speed of the second heat dissipation device is increased; when the second power supply circuit fails and the second operating state is stopped, the fan speed of the first heat dissipation device is increased. In this way, based on the cross power supply, the internal temperature of the first cabinet can be further reduced, protecting the internal components of the first cabinet and improving the safety and reliability of the first cabinet.

[0073] Based on the power converter provided in the above embodiments, in order to further improve the safety and reliability of the components in the second cabinet, in one possible implementation, the power converter may further include: a controller.

[0074] The controller is used to increase the airflow speed of the fourth heat dissipation device 123 when the first power supply circuit 111 fails and the third operating state of the third heat dissipation device 122 is stopped.

[0075] The third operating state is determined by at least one of the second temperature or the second wind speed of the second cabinet 12.

[0076] It should be noted that the method for determining the third operating state is similar to that for determining the first operating state. The difference is that the third operating state is determined based on at least one of the second temperature or the second wind speed of the second cabinet. Other determination steps and processes are the same. For relevant explanations, please refer to the method for determining the first operating state in the above embodiments, which will not be repeated here.

[0077] The controller is used to increase the airflow speed of the third heat dissipation device 122 when the second power supply circuit 121 fails and the fourth operating state of the fourth heat dissipation device 123 is stopped.

[0078] The fourth operating state is determined by at least one of the second temperature or the second wind speed.

[0079] It should be noted that the method for determining the fourth operating state is similar to that for determining the first operating state. The difference is that the fourth operating state is determined based on at least one of the second temperature or the second wind speed of the second cabinet. Other determination steps and processes are the same. For relevant explanations, please refer to the method for determining the first operating state in the above embodiments, which will not be repeated here.

[0080] In this embodiment, when the first power supply circuit fails and the third operating state is stopped, the fan speed of the fourth heat dissipation device is increased; when the second power supply circuit fails and the fourth operating state is stopped, the fan speed of the third heat dissipation device is increased. In this way, based on the cross power supply, the internal temperature of the second cabinet can be further reduced, protecting the internal components of the second cabinet and improving the safety and reliability of the second cabinet.

[0081] Based on the power converter provided in the above embodiments, in order to improve the safety and reliability of the power converter (i.e., improve the safety and reliability of the first cabinet and the second cabinet), in one possible implementation, the power converter may further include: a controller.

[0082] The controller is configured to increase the airflow speed of at least one of the second heat dissipation device 113 or the fourth heat dissipation device 123 when the first power supply circuit 111 fails and both the first operating state of the first heat dissipation device 112 and the third operating state of the third heat dissipation device 122 are stopped.

[0083] The first operating state is determined by at least one of the first temperature or the first wind speed of the first cabinet 11, and the third operating state is determined by at least one of the second temperature or the second wind speed of the second cabinet 12.

[0084] It should be understood that when the first power supply circuit fails, and both the first and third operating states are stopped, this indicates that the failure of the first power supply circuit will affect the normal operation of the heat dissipation device. In this case, it is necessary to increase the airflow speed of at least one of the second or fourth heat dissipation devices to cool the power converter. The second and fourth heat dissipation devices can be adjusted separately. For example, if the first temperature of the first cabinet is lower than the first preset temperature, the airflow speed of the second heat dissipation device remains unchanged; if the second temperature of the second cabinet is higher than the second preset temperature, the airflow speed of the fourth heat dissipation device is increased to cool the second cabinet.

[0085] The controller is configured to increase the airflow speed of at least one of the first heat dissipation device 112 or the third heat dissipation device 122 when the second power supply circuit 121 fails and both the second operating state of the second heat dissipation device 113 and the fourth operating state of the fourth heat dissipation device 123 are stopped.

[0086] The second operating state is determined by at least one of the first temperature or the first wind speed, and the fourth operating state is determined by at least one of the second temperature or the second wind speed.

[0087] It should be noted that the determination methods for the first operating state, the second operating state, the third operating state, and the fourth operating state can be found in the above embodiments, and will not be repeated here.

[0088] It should be understood that when the second power supply circuit fails, and both the second and fourth operating states are stopped, this indicates that the failure of the second power supply circuit will affect the normal operation of the heat dissipation device. In this case, it is necessary to increase the fan speed of at least one of the first or third heat dissipation devices to cool the power converter. The first and third heat dissipation devices can be adjusted separately. For example, if the first temperature of the first cabinet is greater than the first preset temperature, the fan speed of the first heat dissipation device is increased; if the second temperature of the second cabinet is greater than the second preset temperature, the fan speed of the third heat dissipation device is increased to cool the second cabinet.

[0089] It should be noted that, in the embodiments of this application, the first cabinet and the second cabinet can be cooled down. Compared with cooling the first cabinet or the second cabinet, the safety and reliability of the power converter can be further improved.

[0090] In this embodiment, the first operating state of the first heat dissipation device or the second operating state of the second heat dissipation device can be determined by at least one of the first temperature or the first wind speed of the first cabinet; the third operating state of the third heat dissipation device or the fourth operating state of the fourth heat dissipation device can be determined by at least one of the second temperature or the second wind speed of the second cabinet; and then, in the event of a power supply circuit failure and both corresponding heat dissipation devices being in a stopped state, the wind speed of at least one of the two heat dissipation devices in an operating state is increased to cool down at least one of the first or second cabinets, that is, to cool down the inside of the power converter and improve the safety and reliability of the power converter.

[0091] Based on the power converter provided in the above embodiments, in one possible implementation, the power converter may include a controller.

[0092] The controller is configured to determine a first duty cycle of the first heat dissipation device 112 or a second duty cycle of the second heat dissipation device 113 based on at least one of a first temperature or a first wind speed.

[0093] Among them, the first temperature is positively correlated with the first duty cycle, the first temperature is positively correlated with the second duty cycle, the first wind speed is negatively correlated with the first duty cycle, and the first wind speed is negatively correlated with the second duty cycle.

[0094] Duty cycle is an important parameter describing the operating characteristics of a heat dissipation device. It refers to the ratio of the actual operating time of the heat dissipation device within one control cycle to the total cycle time. This ratio is usually expressed as a percentage.

[0095] Duty cycle is a key concept in Pulse Width Modulation (PWM) technology. In PWM control, the rotational speed and airflow of the heat sink can be controlled by adjusting the duty cycle of the signal. When the duty cycle is high, the heat sink operates for a longer time within a control cycle, resulting in a relatively faster rotational speed and a larger airflow. Conversely, when the duty cycle is low, the heat sink operates for a shorter time, resulting in a relatively slower rotational speed and a smaller airflow.

[0096] It should be understood that the higher the temperature inside the cabinet, the higher the operating speed of the cooling device needs to be, thus generating a larger airflow (i.e., increasing the fan speed) to achieve the purpose of cooling. Therefore, the temperature of the cabinet is positively correlated with the duty cycle of the cooling device. Similarly, the lower the fan speed of the cabinet, the higher the temperature inside the cabinet will be due to the reduced fan speed. In this case, the cooling device needs to operate at a higher operating speed, thus generating a larger airflow (i.e., increasing the fan speed) to achieve the purpose of cooling. Therefore, the fan speed of the cabinet is negatively correlated with the duty cycle of the cooling device.

[0097] Positive correlation means that the two variables change in the same direction; that is, when the value of one variable increases or decreases, the value of the other variable also increases or decreases. Negative correlation means that the two variables change in opposite directions; that is, when the value of one variable increases or decreases, the value of the other variable decreases or increases.

[0098] It should be understood that, in the embodiments of this application, by determining the first duty cycle of the first heat dissipation device or the second duty cycle of the second heat dissipation device through at least one of the first temperature or the first wind speed of the first cabinet, and then using the first duty cycle to increase the wind speed of the first heat dissipation device, or using the second duty cycle to increase the wind speed of the second heat dissipation device, precise control of the wind speed of the heat dissipation device can be achieved, improving the control response speed and accuracy, and further improving the safety and reliability of the power converter.

[0099] Based on the power converter provided in the above embodiments, in one possible implementation, the power converter may include a controller.

[0100] The controller is configured to determine the third duty cycle of the third heat dissipation device 122 or the fourth duty cycle of the fourth heat dissipation device 123 based on at least one of the second temperature or the second wind speed.

[0101] Among them, the second temperature is positively correlated with the third duty cycle, the second temperature is positively correlated with the fourth duty cycle, the second wind speed is negatively correlated with the third duty cycle, and the second wind speed is negatively correlated with the fourth duty cycle.

[0102] It should be understood that, in the embodiments of this application, by determining the third duty cycle of the third heat dissipation device or the fourth duty cycle of the fourth heat dissipation device through at least one of the second temperature or the second wind speed of the second cabinet, and then using the third duty cycle to increase the wind speed of the third heat dissipation device, or using the fourth duty cycle to increase the wind speed of the fourth heat dissipation device, precise control of the wind speed of the heat dissipation device can be achieved, improving the control response speed and accuracy, and further improving the safety and reliability of the power converter.

[0103] Based on the power converter provided in the above embodiments, see [link to relevant documentation]. Figure 3 This figure is a schematic diagram of another power converter provided in an embodiment of this application. (Combined with...) Figure 3 As shown, in this embodiment, taking the heat dissipation device as a fan, the first power supply circuit as a DC-DC converter circuit, and the second power supply circuit as an AC-DC converter circuit as an example, the power converter 30 may include: a controller 31, a first cabinet 11, and a second cabinet 12.

[0104] The first cabinet 11 includes: a DC-DC conversion circuit 11-1, a fault detection unit 11-2, a first fan 11-3, a second fan 11-4, a temperature acquisition unit 11-5, and a wind speed acquisition unit 11-6.

[0105] The second cabinet 12 includes: an AC-DC conversion circuit 12-1, a fault detection unit 12-2, a third fan 12-3, a fourth fan 12-4, a temperature acquisition unit 12-5, and a wind speed acquisition unit 12-6.

[0106] The first fan 11-3 and the third fan 12-3 are connected to the DC-DC converter circuit 11-1, and the second fan 11-4 and the fourth fan 12-4 are connected to the AC-DC converter circuit 12-1. The DC-DC converter circuit 11-1 converts the DC voltage from the DC side of the power converter into the operating voltage of the fans to power the first fan 11-3 and the third fan 12-3. The AC-DC converter circuit 12-1 converts the AC voltage from the AC side of the power converter into the operating voltage of the fans to power the second fan 11-4 and the fourth fan 12-4. The DC-DC converter circuit 11-1 and the AC-DC converter circuit 12-1 also power the controller 31 to ensure its normal operation.

[0107] The fault detection unit refers to a device used to detect the operation of the corresponding power supply circuit. The fault detection unit 11-2 is used to detect the operation of the DC-DC converter circuit 11-1, and outputs fault signal 1 to the controller 31 when the DC-DC converter circuit 11-1 fails. The fault detection unit 12-2 is used to detect the operation of the AC-DC converter circuit 12-1, and outputs fault signal 2 to the controller 31 when the AC-DC converter circuit 12-1 fails.

[0108] Temperature acquisition unit refers to a device used to acquire the temperature inside the corresponding cabinet. Temperature acquisition unit 11-5 is used to acquire the first temperature inside the first cabinet 11, and temperature acquisition unit 12-5 is used to acquire the second temperature inside the second cabinet 12.

[0109] The wind speed acquisition unit refers to the device used to detect the wind speed inside the corresponding cabinet. Wind speed acquisition unit 11-6 is used to acquire the first wind speed inside the first cabinet, and wind speed acquisition unit 12-6 is used to acquire the second wind speed inside the second cabinet.

[0110] When a fault occurs in the DC-DC converter circuit 11-1, the fault detection unit 11-2 detects the fault and sends fault signal 1 to the controller 31. After receiving fault signal 1, the controller 31 determines the first operating state of the first fan 11-3 based on the first temperature collected by the temperature acquisition unit 11-5 and the first wind speed collected by the wind speed acquisition unit 11-6, and determines the third operating state of the third fan 12-3 based on the second temperature collected by the temperature acquisition unit 12-5 and the second wind speed collected by the wind speed acquisition unit 12-6. If both the first operating state of the first fan 11-3 and the third operating state of the third fan 12-3 are stopped, the controller 31 calculates and outputs a second duty cycle based on at least one of the first temperature or the first wind speed, and calculates and outputs a fourth duty cycle based on at least one of the second temperature or the second wind speed. The second duty cycle is used to increase the wind speed of the second fan 11-4, and the fourth duty cycle is used to increase the wind speed of the fourth fan 12-3, so that the temperature of at least one of the first cabinet or the second cabinet drops, ensuring that the power converter can operate at a reduced rating, and improving the safety and reliability of the power converter.

[0111] When the AC-DC converter circuit 12-1 malfunctions, the fault detection unit 12-2 detects the fault and sends a fault signal 2 to the controller 31. Upon receiving the fault signal 2, the controller 31 determines the second operating state of the second fan 11-4 based on the first temperature collected by the temperature acquisition unit 11-5 and the first wind speed collected by the wind speed acquisition unit 11-6, and determines the fourth operating state of the fourth fan 12-4 based on the second temperature collected by the temperature acquisition unit 12-5 and the second wind speed collected by the wind speed acquisition unit 12-6. If both the second operating state of the second fan 11-4 and the fourth operating state of the fourth fan 12-4 are stopped, the controller 31 calculates and outputs a first duty cycle based on at least one of the first temperature or the first wind speed, and calculates and outputs a third duty cycle based on at least one of the second temperature or the second wind speed. The first duty cycle is used to increase the wind speed of the first fan 11-3, and the third duty cycle is used to increase the wind speed of the third fan 12-3, so that the temperature of at least one of the first cabinet or the second cabinet drops, ensuring that the power converter can operate at a reduced rating, and improving the safety and reliability of the power converter.

[0112] Based on the power converter provided in the above embodiments, this application also provides a control method for the power converter, see [link to relevant documentation]. Figure 4 This figure is a schematic flowchart of a power converter control method provided in an embodiment of this application, combined with... Figure 4 As shown, the power converter provided in this application embodiment can be any of the power converters described in the above embodiments, and the control method can include:

[0113] S401: In the event of a fault in the first power supply circuit and the first operating state of the first heat dissipation device being stopped, increase the fan speed of the second heat dissipation device.

[0114] The first operating state is determined by at least one of the first temperature or the first wind speed of the first cabinet.

[0115] S402: In the event of a fault in the second power supply circuit and the second operating state of the second heat dissipation device being stopped, increase the fan speed of the first heat dissipation device.

[0116] The second operating state is determined by at least one of the first temperature or the first wind speed.

[0117] In one possible implementation, the method further includes:

[0118] A first duty cycle of the first heat dissipation device or a second duty cycle of the second heat dissipation device is determined based on at least one of a first temperature or a first wind speed; wherein the first temperature is positively correlated with the first duty cycle, the first temperature is positively correlated with the second duty cycle, the first wind speed is negatively correlated with the first duty cycle, and the first wind speed is negatively correlated with the second duty cycle.

[0119] In one possible implementation, the method further includes:

[0120] The third duty cycle of the third heat dissipation device or the fourth duty cycle of the fourth heat dissipation device is determined based on at least one of the second temperature or the second wind speed; wherein the second temperature is positively correlated with the third duty cycle, the second temperature is positively correlated with the fourth duty cycle, the second wind speed is negatively correlated with the third duty cycle, and the second wind speed is negatively correlated with the fourth duty cycle.

[0121] In one possible implementation, different duty cycles can be pre-set according to design requirements. Different duty cycles correspond to different judgment conditions, enabling rapid adjustment. Figure 6 As shown, in the event of a fault in the first power supply circuit or the second power supply circuit, the judgment condition can be:

[0122] If the temperature value is greater than the temperature threshold T_Limit1 and the wind speed value is less than the wind speed threshold Spd_Limit1, then the duty cycle of the heat dissipation device is set to Duty1.

[0123] If the temperature value is less than the temperature threshold T_Limit2, or the wind speed value is less than the wind speed threshold Spd_Limit2, then the duty cycle of the heat dissipation device is set to Duty2.

[0124] If the temperature value is less than the temperature threshold T_Limit3 and the wind speed value is greater than the wind speed threshold Spd_Limit3, then the duty cycle of the heat dissipation device is set to Duty_final; where Duty_final is the final duty cycle obtained through calculation.

[0125] Among them, 0 <Duty2<Duty1<100%;T_Limit1> T_Limit2>T_Limit3; Spd_Limit1 <Spd_Limit2<Spd_Limit3。

[0126] Based on the above judgment conditions, taking the failure of the second power supply circuit as an example to determine the first duty cycle of the first heat dissipation device, as an example, assuming the temperature value is the first temperature and the wind speed value is the first wind speed, then when the first temperature is greater than the temperature threshold T_Limit1 and the second wind speed is less than the wind speed threshold Spd_Limit1, the first duty cycle of the first heat dissipation device is set to Duty1; when the first temperature is less than the temperature threshold T_Limit2 or the second wind speed is less than the wind speed threshold Spd_Limit2, the first duty cycle of the first heat dissipation device is set to Duty2; when the first temperature is less than the temperature threshold T_Limit3 and the second wind speed is greater than the wind speed threshold Spd_Limit3, the first duty cycle of the first heat dissipation device is Duty_final.

[0127] It should be noted that multiple duty cycles can be preset. The relationship between the temperature threshold and wind speed threshold corresponding to each duty cycle depends on the relationship between the duty cycles. The larger the duty cycle, the larger the corresponding temperature threshold and the smaller the corresponding wind speed threshold.

[0128] It should be noted that the first duty cycle of the first heat dissipation device, the second duty cycle of the second heat dissipation device, the third duty cycle of the third heat dissipation device, and the fourth duty cycle of the fourth heat dissipation device can all be determined according to... Figure 5 The process for determining the duty cycle shown is implemented and will not be repeated here.

[0129] This application embodiment, by pre-setting judgment conditions and duty cycle, can quickly adjust the normally operating heat dissipation device in the event of a fault in the first or second power supply circuit, thereby cooling the power converter and improving its safety and reliability.

[0130] In one possible implementation, the method further includes:

[0131] In the event of a failure in the first power supply circuit and the third operating state of the third heat dissipation device being stopped, the fan speed of the fourth heat dissipation device is increased; the third operating state is determined by at least one of the second temperature or the second fan speed of the second cabinet.

[0132] In the event of a failure in the second power supply circuit and the fourth operating state of the fourth heat dissipation device being stopped, the fan speed of the third heat dissipation device is increased; the fourth operating state is determined by at least one of the second temperature or the second fan speed.

[0133] In one possible implementation, the method further includes:

[0134] In the event of a first power supply circuit failure, and both the first operating state of the first heat dissipation device and the third operating state of the third heat dissipation device being stopped, the fan speed of at least one of the second or fourth heat dissipation devices is increased; the first operating state is determined by at least one of the first temperature or the first fan speed of the first cabinet, and the third operating state is determined by at least one of the second temperature or the second fan speed of the second cabinet.

[0135] In the event of a failure in the second power supply circuit, and the fact that both the second operating state of the second heat dissipation device and the fourth operating state of the fourth heat dissipation device are stopped, the airflow speed of at least one of the first or third heat dissipation devices is increased; the second operating state is determined by at least one of the first temperature or the first airflow speed, and the fourth operating state is determined by at least one of the second temperature or the second airflow speed.

[0136] The control method of the power converter provided in this application embodiment has the same beneficial effects as the power converter provided in the above embodiments, and therefore will not be described again.

[0137] Based on the power converter provided in the above embodiments, in one possible implementation, see [link to relevant documentation]. Figure 6 The figure is a schematic diagram of a control device provided in an embodiment of this application.

[0138] The control device may include a memory 611 and a processor 612. The processor 612 may be connected to the controller of the power converter. Figure 6 As shown, the memory can be random access memory (RAM), flash memory, read-only memory (ROM), EPROM, non-volatile read-only memory (Electronic Programmable ROM), registers, hard disks, removable disks, etc.

[0139] The memory 611 can store computer instructions. When the computer instructions stored in the memory 611 are executed by the processor 612, the processor 612 can be used to execute the control method of the power converter. The memory 611 can also store data, such as information like the preset duty cycle involved in the above embodiments.

[0140] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented in software, it can be implemented, in whole or in part, as a computer program product. A computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the flow or function according to the embodiments of this application is generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that integrates one or more available media. The available medium can be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape) or a semiconductor medium (e.g., solid-state disk (SSD)).

[0141] This application also provides a readable storage medium for storing the methods provided in the above embodiments. Examples include random access memory (RAM), flash memory, read-only memory (ROM), EPROM, non-volatile read-only memory (EPROM), registers, hard disks, removable disks, or any other form of storage medium in the art.

[0142] In the embodiments of this application, the terms "first" and "second" (if they exist) are used only as name identifiers and do not represent the order of first and second.

[0143] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. Regarding the methods disclosed in the embodiments, since they correspond to the product embodiments disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to in the description of the product embodiments.

[0144] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A power converter, characterized in that, The power converter includes a first cabinet and a second cabinet. The first cabinet includes a first power supply circuit, a first heat dissipation device, and a second heat dissipation device. The second cabinet includes a second power supply circuit, a third heat dissipation device, and a fourth heat dissipation device. The first heat dissipation device and the third heat dissipation device are connected to the first power supply circuit, and the second heat dissipation device and the fourth heat dissipation device are connected to the second power supply circuit.

2. The power converter according to claim 1, characterized in that, Also includes: The controller is used to increase the fan speed of the second heat dissipation device when the first power supply circuit fails and the first operating state of the first heat dissipation device is stopped. The first operating state is determined by at least one of the first temperature or the first wind speed of the first cabinet. In the event of a fault in the second power supply circuit and the second operating state of the second heat dissipation device being stopped, the fan speed of the first heat dissipation device is increased; the second operating state is determined by at least one of the first temperature or the first fan speed.

3. The power converter according to claim 1, characterized in that, Also includes: The controller is used to increase the fan speed of the fourth heat dissipation device when the first power supply circuit fails and the third operating state of the third heat dissipation device is stopped. The third operating state is determined by at least one of the second temperature or the second wind speed of the second cabinet. If the second power supply circuit fails and the fourth operating state of the fourth heat dissipation device is stopped, the airflow speed of the third heat dissipation device shall be increased. The fourth operating state is determined by at least one of the second temperature or the second wind speed.

4. The power converter according to claim 1, characterized in that, Also includes: The controller is configured to increase the fan speed of at least one of the second or fourth heat dissipation devices when the first power supply circuit fails and both the first operating state of the first heat dissipation device and the third operating state of the third heat dissipation device are stopped; the first operating state is determined by at least one of the first temperature or the first fan speed of the first cabinet, and the third operating state is determined by at least one of the second temperature or the second fan speed of the second cabinet. In the event of a fault in the second power supply circuit, and the fact that both the second operating state of the second heat dissipation device and the fourth operating state of the fourth heat dissipation device are stopped, the fan speed of at least one of the first heat dissipation device or the third heat dissipation device is increased; the second operating state is determined by at least one of the first temperature or the first fan speed, and the fourth operating state is determined by at least one of the second temperature or the second fan speed.

5. The power converter according to claim 2 or 4, characterized in that, The controller is configured to determine a first duty cycle of the first heat dissipation device or a second duty cycle of the second heat dissipation device based on at least one of the first temperature or the first wind speed; wherein the first temperature is positively correlated with the first duty cycle, the first temperature is positively correlated with the second duty cycle, the first wind speed is negatively correlated with the first duty cycle, and the first wind speed is negatively correlated with the second duty cycle.

6. The power converter according to claim 3 or 4, characterized in that, The controller is configured to determine a third duty cycle of the third heat dissipation device or a fourth duty cycle of the fourth heat dissipation device based on at least one of the second temperature or the second wind speed; wherein the second temperature is positively correlated with the third duty cycle, the second temperature is positively correlated with the fourth duty cycle, the second wind speed is negatively correlated with the third duty cycle, and the second wind speed is negatively correlated with the fourth duty cycle.

7. The power converter according to any one of claims 1-4, characterized in that, The first power supply circuit is a DC-DC converter circuit, and the second power supply circuit is an AC-DC converter circuit. The first side of the DC-DC converter circuit is connected to the DC side of the power converter, the second side of the DC-DC converter circuit is connected to the first heat dissipation device and the third heat dissipation device, the AC side of the AC-DC converter circuit is connected to the AC side of the power converter, and the DC side of the AC-DC converter circuit is connected to the second heat dissipation device and the fourth heat dissipation device.

8. A control method for a power converter, characterized in that, The power converter includes a first cabinet and a second cabinet. The first cabinet includes a first power supply circuit, a first heat dissipation device, and a second heat dissipation device. The second cabinet includes a second power supply circuit, a third heat dissipation device, and a fourth heat dissipation device. The first heat dissipation device and the third heat dissipation device are connected to the first power supply circuit, and the second heat dissipation device and the fourth heat dissipation device are connected to the second power supply circuit. The control method includes: In the event of a fault in the first power supply circuit and the first operating state of the first heat dissipation device being stopped, the fan speed of the second heat dissipation device is increased; the first operating state is determined by at least one of the first temperature of the first cabinet or the first fan speed. In the event of a fault in the second power supply circuit and the second operating state of the second heat dissipation device being stopped, the fan speed of the first heat dissipation device is increased; the second operating state is determined by at least one of the first temperature or the first fan speed.

9. The power converter according to claim 8, characterized in that, The method further includes: In the event of a fault in the first power supply circuit and the third operating state of the third heat dissipation device being stopped, the airflow speed of the fourth heat dissipation device is increased; the third operating state is determined by at least one of the second temperature or the second airflow speed of the second cabinet. In the event of a fault in the second power supply circuit and the fourth operating state of the fourth heat dissipation device being stopped, the airflow speed of the third heat dissipation device is increased; the fourth operating state is determined by at least one of the second temperature or the second airflow speed.

10. A control device, characterized in that, The device includes a processor and a memory, the processor being connected to the memory, the memory being used to store programs, instructions, or code, and the processor being used to execute the programs, instructions, or code in the memory to perform the control method of the power converter as described in any one of claims 8-9.

11. A computer-readable storage medium, characterized in that, The device contains a computer program that is loaded by a processor to execute the control method for the power converter as described in any one of claims 8-9.

Images