Distributed parallel operation control system and method based on high-power water-cooled power supply

Abstract

The invention discloses a distributed parallel operation control system and method based on a high-power water-cooled power supply. A CAN interface is used for receiving and transmitting protocol signals output by each device in real time; the ARM control system is used for starting a CAN protocol control algorithm, analyzing data and signals received by the CAN interface, judging whether output current of an equipment system is changed or not, judging whether adjustment is needed or not, detecting equipment disconnection or adding of new equipment or the like, and determining the running parameter state of the water-cooling power supply; the power control system feeds back to the ARM control system in real time, calculates an output current value and sends the output current value to the power control system, and the power control system controls loop output power and generates a current sharing control signal. A control command is transmitted through a CAN parallel operation cable and a customized interface protocol to realize parallel operation of a plurality of power supplies and management of the number of the power supplies on the bus, the operation state and logic control. And reliable, stable and rapid data communication and autonomous and controllable distributed parallel operation control can be realized.

Description

Technical Field

[0001] The present invention relates to a high-power, parallel networking mode power supply application technology, and in particular to a distributed parallel control system and method based on a high-power water-cooled power supply. Background Art

[0002] In many usage scenarios, thousands of amperes or even higher currents are required, and a modular splicing method is generally used. In this method, multiple power supplies need to be connected in parallel to achieve high current output.

[0003] In the prior art, the conventional processing method is: adopting the RS485 communication mode and combining the Modbus protocol to realize the parallel mode. If the number of parallel machines is too large, the communication time between the host and the slave is too long, and the efficiency is very low.

[0004] In view of this, the present invention is proposed. Summary of the invention

[0005] The purpose of the present invention is to provide a distributed parallel control system and method based on a high-power water-cooled power supply to solve the above-mentioned technical problems existing in the prior art.

[0006] The objective of the present invention is achieved through the following technical solutions:

[0007] The distributed parallel control system based on high-power water-cooled power supply of the present invention comprises a CAN communication interface, an ARM control system and a power control system;

[0008] The CAN interface is used to send and receive the output protocol signals of each device in real time;

[0009] The ARM control system is used to start the CAN protocol control algorithm, analyze the data and signals received by the CAN interface, determine whether the output current of the device system has changed and whether it needs to be adjusted, detect device disconnection or the addition of new devices, automatically adjust the output of each power supply to meet the needs of the device system, and determine the operating parameter status of the water-cooled power supply;

[0010] The power control system feeds back to the ARM control system in real time to calculate the output current value and send it to the power control system. The power control system controls the loop output power and generates a current sharing control signal.

[0011] The above-mentioned method for realizing distributed parallel control based on the high-power water-cooled power supply distributed parallel control system comprises the steps of:

[0012] 1) Independent power supply devices of the same model are connected in parallel through the CAN port and then powered on in sequence;

[0013] 2) Each power supply automatically broadcasts the status and data of the device in a 100ms cycle;

[0014] 3) Each device's ARM control system monitors the CAN port data all the time, and the algorithm is to detect the number of power supplies on the bus every 1 second;

[0015] 4) The ARM control system determines whether there is host control according to the system settings. If not, the master-slave mode on the bus is changed through software algorithms based on the principle that the smallest address is the host;

[0016] 5) If the power supply is in the output state, the local or remote control of this power supply sends a data modification, and it is immediately changed to the host mode, and the other power supplies become slave mode, and modify the corresponding output value, and send the current value to the slave through the CAN bus. The power control part of the host provides the basic current sharing signal, and the slave automatically controls the operation of the set current and voltage parameters;

[0017] 6) If a slave device on the bus fails, the slave device will report the failure information three times. After three times, the CAN bus broadcast data will be turned off, and the local power supply parameters will be set to 0 or the input power supply will be turned off. Other devices will operate normally.

[0018] Compared with the prior art, the distributed parallel control system and method based on high-power water-cooled power supplies provided by the present invention realizes the parallel operation of multiple power supplies and the management of the number of power supplies on the bus, operating status, and logical control through CAN parallel cables and customized interface protocols. It can achieve reliable, stable, and fast data communication and autonomous and controllable distributed parallel control. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the principle of a distributed parallel control system based on a high-power water-cooled power supply provided in an embodiment of the present invention.

[0020] Figure 2 A software process control flow chart of a distributed parallel control method for high-power water-cooled power supplies provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0021] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, not all of the embodiments, which does not constitute a limitation of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the protection scope of the present invention.

[0022] The contents not described in detail in the examples of the present invention belong to the prior art known to professionals in the field. If no specific conditions are specified in the examples of the present invention, the conditions are carried out according to the conventional conditions in the field or the conditions recommended by the manufacturer. If the manufacturer is not specified in the reagents or instruments used in the examples of the present invention, they are all conventional products that can be purchased commercially.

[0023] The distributed parallel control system based on high-power water-cooled power supply of the present invention comprises a CAN communication interface, an ARM control system and a power control system;

[0024] The CAN interface is used to send and receive the output protocol signals of each device in real time;

[0025] The ARM control system is used to start the CAN protocol control algorithm, analyze the data and signals received by the CAN interface, determine whether the output current of the device system has changed and whether it needs to be adjusted, detect device disconnection or the addition of new devices, automatically adjust the output of each power supply to meet the needs of the device system, and determine the operating parameter status of the water-cooled power supply;

[0026] The power control system feeds back to the ARM control system in real time to calculate the output current value and send it to the power control system. The power control system controls the loop output power and generates a current sharing control signal.

[0027] The CAN interface protocol detects a bus cycle of 1 second, and the CAN interface communication speed is less than or equal to 500,000 bps.

[0028] Any device on the CAN bus can become the master, and other slaves are controlled autonomously.

[0029] The ARM control system detects the number of power supplies on the bus, and resets the parameters of the slaves and the current sharing control signal of the power control system.

[0030] The above-mentioned method for realizing distributed parallel control based on the high-power water-cooled power supply distributed parallel control system comprises the steps of:

[0031] 1) Independent power supply devices of the same model are connected in parallel through the CAN port and then powered on in sequence;

[0032] 2) Each power supply automatically broadcasts the status and data of the device in a 100ms cycle;

[0033] 3) Each device's ARM control system monitors the CAN port data all the time, and the algorithm is to detect the number of power supplies on the bus every 1 second;

[0034] 4) The ARM control system determines whether there is host control according to the system settings. If not, the master-slave mode on the bus is changed through software algorithms based on the principle that the smallest address is the host;

[0035] 5) If the power supply is in the output state, the local or remote control of this power supply sends a data modification, and it is immediately changed to the host mode, and the other power supplies become slave mode, and modify the corresponding output value, and send the current value to the slave through the CAN bus. The power control part of the host provides the basic current sharing signal, and the slave automatically controls the operation of the set current and voltage parameters;

[0036] 6) If a slave device on the bus fails, the slave device will report the failure information three times. After three times, the CAN bus broadcast data will be turned off, and the local power supply parameters will be set to 0 or the input power supply will be turned off. Other devices will operate normally.

[0037] In summary, the distributed parallel control system and method based on high-power water-cooled power supply in the embodiment of the present invention realizes the parallel operation of multiple power supplies and the management of the number of power supplies on the bus, operating status, and logical control through CAN parallel cable and customized interface protocol transmission control commands. It can realize reliable, stable, and fast data communication and autonomous and controllable distributed parallel control.

[0038] In order to more clearly demonstrate the technical solution and technical effects provided by the present invention, the embodiments of the present invention are described in detail with specific embodiments below.

[0039] Example 1

[0040] A high-power distributed parallel control system and method based on a water-cooled power supply, and logic algorithm control of a software program.

[0041] The hardware of the control system and method includes a CAN communication interface, an ARM control system, and a control system.

[0042] The specific implementation method is as follows: the power supply equipment in the network is connected in parallel to the CAN interfaces of other power supply equipment in turn through the CAN parallel cable, a 120-ohm resistor is connected in parallel to the first power supply and the last power supply, and a parallel software protocol algorithm is added to the ARM control system of the power supply equipment to generate logic control algorithm signals and data, and then the control commands are transmitted through the CAN parallel cable and the customized interface protocol to realize the parallelization of multiple power supplies and the management of the number of power supplies on the bus, the operating status, and the logic control.

[0043] like Figure 1 As shown, the high-power water-cooled power distributed parallel control system provided by the present invention includes a CAN interface, an ARM control system and a power control system.

[0044] The CAN interface is used to send and receive output protocol signals of various devices in real time.

[0045] The ARM control system is used to start the CAN protocol control algorithm, analyze the data and signals received by the CAN interface, determine whether the output current of the equipment system has changed and whether it needs to be adjusted, detect whether the equipment is offline or a new device is added, automatically adjust the output of each power supply to meet the needs of the equipment system, determine the operating parameter status of the water-cooled power supply, and send it to the display control system;

[0046] The power control system feeds back to the ARM control system in real time to calculate the output current value and send it to the power control system, and the power control system controls the loop output power.

[0047] The specific process is software flow control such as Figure 2 :

[0048] 1) If Figure 1 As shown in the figure, independent power supply devices of the same model are connected in parallel through the CAN port and then loaded and powered on in sequence.

[0049] 2) Each power supply automatically broadcasts the status and data of the device in a 100ms cycle.

[0050] 3) Each device's ARM control system monitors the CAN port data all the time, and the algorithm is to detect the number of power supplies on the bus every 1 second.

[0051] 4) The ARM control system determines whether there is host control based on the system settings. If not, the master-slave mode on the bus is changed through a software algorithm (the principle of the smallest address being the host).

[0052] 5) If the power supply is in output state, the local or remote control of this power supply sends a data modification, and it is immediately changed to the host mode. The other power supplies become slave mode, and modify the corresponding output value. The current value is sent to the slave through the CAN bus. The power control part of the host provides the basic current sharing signal, and the slave automatically controls the operation of the set current and voltage parameters.

[0053] 6) If a slave device on the bus fails, the slave device will report the failure information three times. After three times, the CAN bus broadcast data will be turned off, and the local power supply parameters will be set to 0 or the input power supply will be turned off. Other devices will operate normally.

[0054] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims. The information disclosed in the background technology section of this article is only intended to deepen the understanding of the overall background technology of the present invention, and should not be regarded as an admission or in any form that the information constitutes prior art known to those skilled in the art.

Claims

1. A distributed parallel control system based on high-power water-cooled power supply, characterized in that: Including CAN communication interface, ARM control system and power control system; The CAN interface is used to send and receive the output protocol signals of each device in real time; The ARM control system is used to start the CAN protocol control algorithm, analyze the data and signals received by the CAN interface, determine whether the output current of the device system has changed and whether it needs to be adjusted, detect device disconnection or the addition of new devices, automatically adjust the output of each power supply to meet the needs of the device system, and determine the operating parameter status of the water-cooled power supply; The power control system feeds back to the ARM control system in real time to calculate the output current value and send it to the power control system. The power control system controls the loop output power and generates a current sharing control signal.

2. The distributed parallel control system based on high-power water-cooled power supply according to claim 1 is characterized in that: The CAN interface protocol detects a bus cycle of 1 second, and the CAN interface communication speed is less than or equal to 500,000 bps.

3. The distributed parallel control system based on high-power water-cooled power supply according to claim 2 is characterized in that: Any device on the CAN bus can become the master, and other slaves are controlled autonomously.

4. The distributed parallel control system based on high-power water-cooled power supply according to claim 1 is characterized in that: The ARM control system detects the number of power supplies on the bus, and resets the parameters of the slaves and the current sharing control signal of the power control system.

5. A method for implementing distributed parallel control based on a high-power water-cooled power supply distributed parallel control system according to any one of claims 1 to 4, characterized in that: Includes steps: 1) Independent power supply devices of the same model are connected in parallel through the CAN port and then powered on in sequence; 2) Each power supply automatically broadcasts the status and data of the device in a 100ms cycle; 3) Each device's ARM control system monitors the CAN port data all the time, and the algorithm is to detect the number of power supplies on the bus every 1 second; 4) The ARM control system determines whether there is host control according to the system settings. If not, the master-slave mode on the bus is changed through software algorithms based on the principle that the smallest address is the host; 5) If the power supply is in the output state, the local or remote control of this power supply sends a data modification, and it is immediately changed to the host mode, and the other power supplies become slave mode, and modify the corresponding output value, and send the current value to the slave through the CAN bus. The power control part of the host provides the basic current sharing signal, and the slave automatically controls the operation of the set current and voltage parameters; 6) If a slave device on the bus fails, the slave device will report the failure information three times. After three times, the CAN bus broadcast data will be turned off, and the local power supply parameters will be set to 0 or the input power supply will be turned off. Other devices will operate normally.

Images