A method and system for online switching control of multiple operation modes of a DCDC converter

Abstract

The present application relates to the technical field of converter operation mode switching, in particular to a DCDC converter multiple operation mode online switching control method and system, the method comprising the following steps: determining multiple operation modes of the converter, constructing a mode node network based on the multiple operation modes; setting a monitoring body for the mode node network; determining the current operation mode of the converter, and acquiring actual operation data of the current operation mode in real time based on the monitoring body; acquiring target operation data of a target operation mode in real time based on a capture point; determining a target node chain based on the actual operation data and the target operation data; when the current operation mode ends, adjusting the actual value to a target data value based on the target node chain, and switching the converter from the current operation mode to the next operation mode when the actual data value reaches the target data value, thereby achieving smooth transition from the current operation mode to the target operation mode and avoiding voltage jump and current impact caused by sudden change of control instructions.

Description

Technical Field

[0001] This invention relates to the field of converter operating mode switching technology, specifically to an online switching control method and system for multiple operating modes of a DC-DC converter. Background Technology

[0002] When a converter switches between multiple operating modes, it typically needs to adjust the actual operating data (such as voltage and current values) of the current operating mode to the target operating data of the target operating mode. Existing converters, when switching from the current operating mode to the target operating mode, usually directly issue a target operating data command, causing the actual operating data to jump from the current value to the target value. This abrupt change in control command causes excessive voltage change rate, leading to current and voltage oscillations, which affect the stable operation of the converter and the load equipment.

[0003] To address these issues, we propose an online switching control method and system for multiple operating modes of a DC-DC converter. Summary of the Invention

[0004] The purpose of this invention is to provide an online switching control method and system for multiple operating modes of a DC-DC converter, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a method and system for online switching control of multiple operating modes of a DC-DC converter, the method comprising the following steps: Multiple operating modes of the converter are determined, and a mode node network is constructed based on these modes. Monitoring entities are set up for the mode node network, including monitoring points, capture points, and node chains. Determine the current operating mode of the converter, and acquire the actual operating data of the current operating mode in real time based on the monitoring body; acquire the target operating data of the target operating mode in real time based on the capture point; determine the target node chain based on the actual operating data and the target operating data; When the current operating mode ends, the actual value is adjusted to the target data value based on the target node chain. When the actual data value reaches the target data value, the converter is switched from the current operating mode to the next operating mode.

[0006] Preferably, the step of determining multiple operating modes of the converter and constructing a mode node network based on these multiple operating modes includes: Obtain multiple operating modes of the converter and configure a mode node for each operating mode; Multiple nodes in the aforementioned operating modes are connected to form a mode node network.

[0007] Preferably, the step of setting up a monitoring body for the pattern node network includes: Monitoring points and capture points are set for the pattern node network. The monitoring point corresponds to the pattern node corresponding to the current running mode in the pattern node network, and the capture point corresponds to the pattern node corresponding to the target running mode in the pattern node network. Multiple data nodes are set up between the monitoring point and the capture point to form a node chain, and a management terminal is configured for the node chain; the node chain of the monitoring point, capture point and configuration management terminal is used as the monitoring body.

[0008] Preferably, the step of setting up multiple data nodes between the monitoring point and the capture point to form a node chain, and configuring the management terminal for the node chain includes: The monitoring system is configured with tracking points and management points. Multiple data nodes are stored in the management points, and the tracking points and management points are used as management terminals. A node chain is formed by sequentially connecting monitoring points, multiple data nodes, and capture points, and communication connections are established between multiple data nodes located on the node chain. Establish a communication connection between the tracking point and the management point. The tracking point is used to collect current characteristic parameters flowing between adjacent data nodes in real time, and the management point is used to update and manage the node chain.

[0009] Preferably, the steps of determining the current operating mode of the converter, acquiring actual operating data of the current operating mode in real time based on monitoring entities, acquiring target operating data of the target operating mode in real time based on capture points, and determining the target node chain based on the actual operating data and the target operating data include: Determine the current operating mode of the converter, obtain the actual operating data of the last step of the current operating mode based on the monitoring points, obtain the target operating data of the target operating mode based on the capture points, and establish a node chain based on the actual operating data and the target operating data; The management end distributes multiple data nodes on the node chain, and connects the monitoring points, multiple data nodes and capture points to obtain the initial node chain. Each data node corresponds to a transitional running data. The current parameters between two adjacent nodes in the initial node chain are acquired in real time. The current characteristic parameters are compared with the preset oscillation threshold. The management point manages the data nodes in the node chain according to the comparison results to obtain the target node chain.

[0010] Preferably, the step of acquiring the current parameters between two adjacent nodes in the initial node chain in real time, comparing the current characteristic parameters with a preset oscillation threshold, and managing the data nodes in the node chain based on the comparison result to obtain the target node chain includes: Real-time acquisition of current parameters between two adjacent nodes in the initial node chain, including current change rate and current fluctuation amplitude; Determine whether the current parameters meet the preset oscillation threshold; When the current parameter meets the preset oscillation threshold, the management point distributes and inserts new data nodes into the node chain. The new data nodes are inserted into the remaining node chain after the current data node, and a communication connection is established between the new data nodes and other data nodes. The corresponding transition operation data is re-formulated for each data node in the remaining node chain after the insertion of the new data node, so that the transition operation data corresponding to the data nodes in the remaining node chain are arranged in arithmetic descending order to obtain the updated target node chain. When the current parameter does not meet the preset oscillation threshold, the management point randomly selects a data node from the remaining node chain, and re-formulates the corresponding transition operation data for each data node in the remaining node chain after the data node is selected, so that the transition operation data corresponding to the data nodes in the remaining node chain are in an arithmetic progression state, and the updated target node chain is obtained.

[0011] Preferably, the step of adjusting the actual value to the target data value based on the target node chain when the current operating mode ends, and switching the converter from the current operating mode to the next operating mode when the actual data value reaches the target data value, includes: When the current running mode ends, obtain the target node chain corresponding to the current running mode; According to the arrangement order of data nodes in the target node chain of the capture point, the actual data value of the capture point converter is adjusted to the transition operation data corresponding to each data node in turn; After completing the transitional data adjustment for one data node, it automatically jumps to the next data node to continue the adjustment. When the adjustment reaches the last data node in the target node chain of the capture point, it means that the actual data value has reached the target data value, and the converter will switch from the current operating mode to the next operating mode.

[0012] An online switching control system for multiple operating modes of a DC-DC converter, applied to any one of the above-described online switching control methods for multiple operating modes of a DC-DC converter, includes: The module is used to determine multiple operating modes of the converter and construct a mode node network based on these modes. Monitoring entities are set up for the mode node network, including monitoring points, capture points, and node chains. The control and transition module is used to determine the current operating mode of the converter, acquire the actual operating data of the current operating mode in real time based on the monitoring body, acquire the target operating data of the target operating mode in real time based on the capture point, and determine the target node chain based on the actual operating data and the target operating data. The mode switching module is used to adjust the actual value to the target data value based on the target node chain when the current operating mode ends, and to switch the converter from the current operating mode to the next operating mode when the actual data value reaches the target data value.

[0013] Compared with the prior art, the beneficial effects of the present invention are: By constructing a mode node network, mode nodes are configured for each operating mode, and a node chain containing multiple data nodes is set between the monitoring point and the capture point. Each data node corresponds to a transitional operating data arranged in an arithmetic progression. The converter gradually adjusts the actual data value according to the order of the data nodes in the node chain, realizing a smooth transition from the current operating mode to the target operating mode and avoiding voltage jumps and current surges caused by sudden changes in control commands. Based on real-time monitoring of oscillations, subsequent transitional operation data that has not yet been executed is dynamically reallocated. When oscillations are detected, data nodes are inserted into the remaining node chain to refine the step size and suppress oscillations; when no oscillations are detected, data nodes are removed from the remaining node chain to increase the step size and improve the control speed. The degree of oscillation is positively correlated with the number of inserted nodes; the more severe the oscillation, the more nodes are inserted, the smaller the voltage step size, and the smoother the adjustment, achieving adaptive elastic scaling of the node chain. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the method flow of the present invention; Figure 2 This is a system structure block diagram of the present invention. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] For examples, please refer to Figures 1 to 2 This invention provides a method and system technical solution for online switching control of multiple operating modes of a DC-DC converter: A method for online switching control of multiple operating modes of a DC-DC converter includes the following steps: S1: Determine multiple operating modes of the converter, and construct a mode node network based on the multiple operating modes; set up monitoring entities for the mode node network, wherein the monitoring entities include monitoring points, capture points and node chains; The steps for determining multiple operating modes of the converter and constructing a mode node network based on these modes include: obtaining multiple operating modes of the converter and configuring a mode node for each operating mode; connecting multiple operating mode nodes to form a mode node network, where the connection indicates that direct switching between two operating mode nodes is feasible; determining the switching path from the current mode node to the target mode node in the mode node network based on the current mode node corresponding to the current operating mode and the target mode node corresponding to the target operating mode; and performing mode switching between the current mode node and the target mode node according to the switching path. Specifically, each operating mode node contains at least the operating parameter set, mode boundary conditions, and node identifier for that mode. The node identifier indicates the type of operating mode corresponding to that node. A connection indicates the feasibility of direct switching between two operating mode nodes. Direct switching refers to switching from the current operating mode to the target operating mode, which is the next operating mode. For example, if the current operating mode is constant input voltage mode and the next operating mode is constant output voltage mode, then the switch is from constant input voltage mode to constant output voltage mode. During this switching process, voltage oscillations may occur, requiring adjustments based on the actual voltage value of the current operating mode and the next operating mode. The target voltage value is determined, and a node chain is established to buffer voltage regulation. Based on the node chain, the actual voltage value is adjusted to the target voltage value, thereby completing the voltage loop regulation. Through the regulation of the voltage loop, the switching of the converter's operating mode is completed. It can effectively buffer and regulate the voltage according to the node chain, reducing oscillations caused by sudden changes in control commands. It can achieve seamless switching between different operating modes when the DC-DC converter is in operation, better adapting to complex operating conditions in different fields. It ensures that the voltage command will not change suddenly when switching between different modes online, and can achieve smooth and seamless transition between different operating modes, ensuring the safe and stable operation of the equipment.

[0018] The steps for setting up a monitoring entity for a pattern node network include: setting monitoring points and capture points for the pattern node network, wherein the monitoring point corresponds to the pattern node corresponding to the current operating mode in the pattern node network, and the capture point corresponds to the pattern node corresponding to the target operating mode in the pattern node network; setting up multiple data nodes between the monitoring point and the capture point to form a node chain; configuring a management terminal for the node chain; and using the node chain of the monitoring point, capture point, and configuration management terminal as the monitoring entity.

[0019] Multiple data nodes are connected between monitoring points and capture points to form a node chain. The steps for configuring a management terminal for the node chain include: configuring tracking points and management points in the monitoring body, storing multiple data nodes in the management point, using the tracking point and management point as the management terminal, and sequentially connecting the monitoring point, multiple data nodes, and capture point to form a node chain; establishing communication connections between multiple data nodes on the node chain; establishing a communication connection between the tracking point and the management point, wherein the tracking point is used to collect current characteristic parameters flowing through adjacent data nodes in real time, and the management point is used to update and manage the node chain; in the management point... Specifically, a mode node is an abstract node representing a specific operating mode of a converter. It includes the set of operating parameters for that mode (the electrical parameters the converter should maintain under that mode, including voltage, current, and frequency values), mode boundary conditions, and a node identifier (a unique code identifying the type of operating mode corresponding to that node). This data structure or database record is deployed in the management server. The management terminal is an industrial control computer deployed in a virtual machine or container, equipped with a network communication interface and database storage capabilities. It is a control plane entity used for unified management of the mode node network, node chain, and data nodes. Monitoring points are data acquisition points set on the mode node corresponding to the current operating mode in the mode node network. The system acquires real-time operating data of the current operating mode, including actual voltage and current values. The ADC sampling circuit on the converter control board or the variable reading interface in the digital signal processor converts the analog signals output by the voltage and current sensors into digital signals. The capture point is set as a data acquisition point on the mode node corresponding to the target operating mode in the mode node network. It is used to acquire the target operating data of the target operating mode in real time. During the node chain adjustment process, the target operating data corresponding to the capture point remains unchanged and serves as the endpoint reference of the adjustment process. The register storage unit on the converter control board or the read-only variable in the memory stores the preset target value of the target operating mode. A node chain is an ordered data structure formed by sequentially connecting monitoring points, multiple data nodes, and capture points. It represents the transition adjustment path from the current operating data to the target operating data. Each node chain uniquely corresponds to one operating mode switching process. It is stored in a linked list structure or array in the management terminal memory. Each element stores a pointer to a data node and its corresponding transition operating data value. Data nodes are the basic building blocks in the node chain. Each data node corresponds to a transition operating data value, indicating the intermediate value that the converter should reach during the adjustment process. Data nodes are arranged in order in the node chain, and the transition operating data corresponding to the previous data node satisfies a certain relationship with the transition operating data corresponding to the next data node. The system uses an arithmetic progression relationship and virtual node instances allocated in the management virtual machine. Each instance contains a node identifier, transitional running data values, a predecessor node pointer, and a successor node pointer. Tracking points are monitoring units set between two adjacent data nodes to collect current characteristic parameters flowing between adjacent data nodes in real time, including the rate of change of current and the amplitude of current fluctuation. The tracking points compare the collected current characteristic parameters with a preset oscillation threshold to determine whether current oscillation occurs during the adjustment process between adjacent data nodes. The tracking points are deployed on an independent sampling module on the converter control board or as a software monitoring thread in the management virtual machine. When the tracking points run in the form of a virtual machine on the management end, they serve as a monitoring service within the management end.The management point is the core functional unit of the management terminal. Based on the comparison between the current characteristic parameters reported by the tracking points and a preset oscillation threshold, it performs data node distribution, insertion, or removal operations on the data nodes in the node chain. It is a control logic module running within the management terminal's virtual machine, executing the node management algorithm as a software service. The management point and the management terminal can be deployed on the same physical server or in the same virtual machine.

[0020] S2: Determine the current operating mode of the converter, acquire the actual operating data of the current operating mode in real time based on the monitoring body; acquire the target operating data of the target operating mode in real time based on the capture point; determine the target node chain based on the actual operating data and the target operating data; The steps for determining the current operating mode of the converter, acquiring the actual operating data of the current operating mode in real time based on the monitoring points, acquiring the target operating data of the target operating mode in real time based on the capture points, and determining the target node chain based on the actual operating data and the target operating data include: determining the current operating mode of the converter, acquiring the actual operating data of the last step of the current operating mode based on the monitoring points, acquiring the target operating data of the target operating mode based on the capture points, establishing a node chain based on the actual operating data and the target operating data, distributing multiple data nodes on the node chain at the management end, connecting the monitoring points, multiple data nodes, and capture points to obtain the initial node chain, each data node corresponding to a transitional operating data, acquiring the current parameters between two adjacent nodes in the initial node chain in real time, comparing the current characteristic parameters with a preset oscillation threshold, and managing the data nodes in the node chain according to the comparison results to obtain the target node chain; Specifically, the current operating mode of the converter is acquired in real time. The monitoring device is positioned within this current operating mode (the monitoring device changes in real time based on the current operating mode; when the current operating mode switches to the target operating mode, the target operating mode is used as the current operating mode, and the monitoring device is used to monitor the current operating mode, monitoring different operating modes according to the changes in the current operating mode). The actual operating data of the current operating mode is monitored through monitoring points. By assigning capture points to the mode nodes corresponding to the target operating mode, the target operating data corresponding to the target operating mode is acquired in real time. During the process of adjusting the actual operating data to the target operating data, multiple transitional operating data are set, and these transitional operating data are arranged in a descending arithmetic progression. Each transitional operating data corresponds to a data node, which is managed through a management terminal. This allows for real-time monitoring of whether there are oscillations or stable conditions in the converter during the adjustment of the actual operating data, and the subsequent adjustments are based on the oscillation situation. The available transitional operating data is redistributed, with the specific allocation determined by gradually inserting or removing data nodes in the remaining node chain. This allows for real-time updates of the number of data nodes and corresponding transitional operating data in the subsequent node chain based on the adjustment progress of the actual operating data, making it more suitable for the current operating data transition under the current situation, improving transition efficiency, and reducing transition oscillations. During converter mode switching, the remaining unexecuted transitional operating data is dynamically adjusted based on real-time monitored oscillations. By inserting or removing data nodes, oscillation suppression, resource optimization, and adaptive smoothing are achieved without interrupting control. A node chain containing multiple data nodes is set between the monitoring point and the capture point, with each data node corresponding to a transitional operating data arranged in an arithmetic progression. The converter gradually adjusts the actual data value according to the order of the data nodes in the node chain, smoothly transitioning from the current operating mode to the target operating mode and avoiding abrupt changes in control commands.

[0021] The steps for obtaining the target node chain by acquiring the current parameters between two adjacent nodes in the initial node chain in real time, comparing the current characteristic parameters with a preset oscillation threshold, and managing the data nodes in the node chain based on the comparison results include: acquiring the current parameters between two adjacent nodes in the initial node chain in real time, including the current change rate and current fluctuation amplitude; determining whether the current parameters meet the preset oscillation threshold; when the current parameters meet the preset oscillation threshold, the management point distributes and inserts new data nodes into the node chain, the new data nodes are inserted into the remaining node chain after the current data node, communication connections are established between the new data nodes and other data nodes, and corresponding transition operation data is re-formulated for each data node in the remaining node chain after the insertion of the new data node, so that the transition operation data corresponding to the data nodes in the remaining node chain are arranged in an arithmetic progression, resulting in an updated target node chain; when the current parameters do not meet the preset oscillation threshold, the management point randomly selects a data node from the remaining node chain, and re-formulates corresponding transition operation data for each data node in the remaining node chain after the selected data node, so that the transition operation data corresponding to the data nodes in the remaining node chain are in an arithmetic progression, resulting in an updated target node chain.

[0022] It should be noted that determining whether the current parameters meet the preset oscillation threshold specifically includes: calculating the absolute value of the current change rate; when the absolute value of the current change rate exceeds the first preset threshold, it is determined that there is an impulsive change; calculating the number of fluctuations of the current fluctuation amplitude within a unit time window; when the number of fluctuations exceeds the second preset threshold, it is determined that there is high-frequency oscillation; when both the existence of impulsive change and the existence of high-frequency oscillation are met, the current parameters are determined to meet the preset oscillation threshold.

[0023] The new data node is inserted into the remaining node chain after the current data node. Specifically, this includes: identifying two adjacent nodes that trigger the oscillation threshold as a reference node pair; using the next node in the reference node pair as the insertion reference point; inserting the new data node after the insertion reference point; and then using the node chain with the new data node inserted, the remaining node chain consists of multiple data nodes located after the insertion reference point.

[0024] Re-determine the corresponding transitional operation data for each data node, so that the transitional operation data for the data nodes on the remaining node chain are in an arithmetic progression. Specifically, this includes: determining the initial transitional operation data corresponding to the first data node on the node chain; determining the target operation data corresponding to the capture point; calculating the arithmetic progression tolerance based on the total number of data nodes on the node chain; and assigning transitional operation data to each data node sequentially from the first data node to the data node corresponding to the capture point according to the tolerance, and adjusting the voltage value of the current operation mode to the voltage value of the target operation mode as needed.

[0025] Before the management point distributes and inserts a new data node into the node chain, the process includes: the management point sending a distribution instruction to the new data node through a control channel, the distribution instruction carrying the target node chain identifier and the insertion position; the new data node updating its local topology affiliation information according to the distribution instruction and establishing data channel connections with the predecessor and successor nodes; and the management point updating the global topology version and data sharding mapping table.

[0026] Specifically, the current parameters between two adjacent nodes in the initial node chain are acquired in real time. These current parameters include the rate of change of current and the amplitude of current fluctuations. It is then determined whether the current parameters meet a preset oscillation threshold. If the current parameters meet the preset oscillation threshold, the management point distributes and inserts a new data node into the node chain (the remaining node chain after the current data node), and establishes a communication connection between the new data node and other data nodes. Based on the communication connection, in the remaining node chain, the corresponding transitional operation data is reallocated to each data node (the data on other data nodes is proportionally allocated to the newly inserted data node, so that the data nodes in the resulting node chain correspond to the transitional operation data). The transition operation data is arranged in an arithmetic descending order, and the target operation data corresponding to the capture point remains unchanged. The transition operation data decreases in an arithmetic descending order according to the data node sequence, thus updating the node chain. When the current parameter does not meet the preset oscillation threshold, the management point randomly selects a data node from the remaining node chain. Based on the communication connection between multiple data nodes, the transition operation data corresponding to the data node is proportionally distributed to other data nodes. The transition operation data between the remaining data nodes is reset so that the transition operation data corresponding to the data node distribution on the node chain is in an arithmetic descending state, and the target operation data corresponding to the last capture point remains unchanged.

[0027] For example: Suppose a converter needs to switch from its current operating mode to a target operating mode. The current operating mode voltage is 100V, and the target operating mode voltage is 50V. The target operating mode is the next operating mode the converter needs to switch to. Assume that during the process of adjusting from 100V to 50V, the total number of data nodes in the corresponding node chain is 5 (node ​​A, node B, node C, node D, node E), and the capture point is node E, which is the last node in the node chain. The value corresponding to this node is the target voltage value of the target operating mode, which remains constant. The tolerance is then calculated. The corresponding calculation formula is: Transitional operating data is allocated sequentially from the first data node to the data node corresponding to the capture point: Node A is 100V, which is the current operating data of the last frame corresponding to the current operating mode collected by the monitoring point; Node B is 87.5V; Node C is 75V; Node D is 62.5V; and Node E (capture point) is 50V. These are preliminary node chains set according to the target operating parameters of the target operating mode. The current operating data of the current operating mode is first adjusted based on the preliminary node chain, and the corresponding stability is judged. The tracking point monitors in real time whether oscillations occur during this voltage change process, and based on the monitoring, notifies the management point to add or remove data nodes in subsequent node chains to adjust the current operating data as quickly as possible. The voltage is adjusted to the target operating data. During the adjustment process from the current operating mode voltage value of 100V to the target operating mode voltage value of 50V: the converter's voltage output value gradually decreases from 100V corresponding to node A to 50V corresponding to node E according to the order of data nodes in the node chain; the voltage change amplitude at each step is 12.5V, maintaining an arithmetic decreasing pattern; the voltage value stays at the transition operating data corresponding to each data node for a preset time length to complete the operation adjustment of the current stage; finally, the target operating data of 50V is reached at the capture point (node ​​E). When the target operating data is reached, the switching of the converter's operating mode is triggered to avoid oscillation caused by sudden changes in control commands; when the current parameter meets the preset oscillation threshold, the two adjacent nodes that trigger the oscillation threshold are identified as nodes B and C. Using the next node in the reference node pair (node ​​C) as the insertion reference point, the new data node is inserted after node C. After inserting the new data node (node ​​F), the node chain becomes: Node A (grab point) → Grab point Node B (grab point) → Grab point Node C (grab point) → Grab point Node F (grab point) → Grab point Node D (grab point) → Grab point Node E. After the new data node is inserted, the voltage is adjusted from 87.5V corresponding to node B to 50V corresponding to node E. The adjustment start point is the transitional operating data of 87.5V corresponding to node B; the adjustment end point is the target operating data of 50V corresponding to node E; the node chain participating in the reallocation is the remaining node chain after node B, including nodes C, F, D, and E; the tolerance is recalculated. for: Following the order from the first node after the adjustment starting point to the grab point, transitional operating data is assigned to each data node in sequence: Node A is 100V, Node B is 87.5V (the adjustment starting point remains unchanged), Node C is 78.125V, Node F is 68.75V, Node D is 59.375V, and Node E (grab point) is 50V. During the adjustment process from the current operating mode voltage value of 100V to the target operating mode voltage value of 50V: Node B (87.5V) grab point → grab point node C (78.125V) grab point. 125V) Grab point → Grab point node F (68.75V) Grab point → Grab point node D (59.375V) Grab point → Grab point node E (50V). Since the adjustment process from node A to node B was already completed before inserting the new data node, we only need to continue adjusting from node B onwards. The first stage adjusts from node A (100V) to node B (87.5V) with a step size of 12.5V. The second stage adjusts from node B (87.5V) to node E (50V). Points C, F, and D have a step size of 9.375V; the 87.5V corresponding to node B is used as the adjustment starting point and remains unchanged; all nodes after node B (nodes C, F, D, and E) redistribute transitional operating data according to the new tolerance of 9.375V; the target operating data of 50V corresponding to node E remains unchanged; the newly inserted node F obtains transitional operating data of 68.75V, filling the voltage step between nodes C and D; the adjustment starting point is the transitional operating data (87.5V) corresponding to the previous node in the reference node pair that triggers the oscillation threshold; the adjustment ending point is the target operating data (50V) corresponding to the grab point and remains unchanged; the redistribution range is all data nodes in the remaining node chain after the adjustment starting point; the tolerance calculation formula is: tolerance = (adjustment starting voltage value grab point - grab point target voltage value) ÷ total number of data nodes in the remaining node chain of the grab point; the newly inserted node is inserted after the next node (node ​​C) in the reference node pair; the function of the newly inserted node is to increase the voltage adjustment step and make the voltage change smoother. During the adjustment from node A to node B, if the preset oscillation threshold is not met, a non-captured data node can be randomly removed from the remaining data nodes in the node chain. After removing the data node, the corresponding transition operation data for the other data nodes in the remaining node chain is redefined, thereby increasing the subsequent adjustment step size and improving the subsequent adjustment speed. By inserting a new data node when the current parameter meets the preset oscillation threshold, the voltage adjustment step size is refined, and the voltage change rate is reduced, thereby effectively suppressing the current oscillation generated by the converter during mode switching. The transition operation data corresponding to the previous node in the reference node that triggers the oscillation threshold is used as the new adjustment starting point, keeping the completed adjustment process unaffected by node insertion and achieving lossless continuation of the adjustment process.To improve the speed of regulation and avoid current oscillations caused by voltage surges, the data is redistributed starting from 87.5V (instead of 100V) to ensure that the regulation process is uninterrupted and does not jump. Only the remaining node chain between the regulation start point and the grab point is redistributed for transitional operation, while the data nodes before the node insertion point remain unchanged. The degree of oscillation is positively correlated with the number of inserted nodes. The more severe the oscillation, the more nodes are inserted, the smaller the voltage step size, and the smoother the regulation, thus achieving adaptive elastic scaling of the node chain.

[0028] S3: When the current operating mode ends, the actual value is adjusted to the target data value based on the target node chain. When the actual data value reaches the target data value, the converter is switched from the current operating mode to the next operating mode. When the current operating mode ends, the actual value is adjusted to the target data value based on the target node chain. When the actual data value reaches the target data value, the steps to switch the converter from the current operating mode to the next operating mode include: when the current operating mode ends, obtaining the target node chain corresponding to the current operating mode; adjusting the actual data value of the converter at the capture point to the transitional operating data corresponding to each data node in the order of the data nodes in the capture point target node chain; after completing the adjustment of the transitional operating data corresponding to one data node, automatically jumping to the next data node to continue the adjustment; when the adjustment reaches the last data node in the capture point target node chain, which means that the actual data value has reached the target data value, the converter is switched from the current operating mode to the next operating mode.

[0029] An online switching control system for multiple operating modes of a DC-DC converter, applied to any of the above-mentioned online switching control methods for multiple operating modes of a DC-DC converter, includes: The module is used to determine multiple operating modes of the converter and construct a mode node network based on these modes. Monitoring entities are set up for the mode node network, including monitoring points, capture points, and node chains. The control and transition module is used to determine the current operating mode of the converter, acquire the actual operating data of the current operating mode in real time based on the monitoring body, acquire the target operating data of the target operating mode in real time based on the capture point, and determine the target node chain based on the actual operating data and the target operating data. The mode switching module is used to adjust the actual value to the target data value based on the target node chain when the current operating mode ends, and to switch the converter from the current operating mode to the next operating mode when the actual data value reaches the target data value.

[0030] This invention constructs a mode node network, configuring mode nodes for each operating mode, and establishing a node chain containing multiple data nodes between monitoring points and capture points. Each data node corresponds to a transitional operating data arranged in an arithmetic progression. The converter gradually adjusts the actual data values ​​according to the order of the data nodes in the node chain, achieving a smooth transition from the current operating mode to the target operating mode and avoiding voltage jumps and current surges caused by sudden changes in control commands. Tracking points are set between adjacent data nodes in the node chain to collect the rate of change of current and the amplitude of current fluctuations flowing through adjacent data nodes in real time. When the current parameter meets the preset oscillation threshold, the management point inserts a new data node into the remaining node chain, refining the voltage step size of the remaining control phase and reducing the voltage change rate, thereby effectively suppressing current and voltage oscillations generated by the converter during mode switching. Based on the real-time monitored oscillation situation, subsequent unexecuted transitional operating data is dynamically redistributed. When oscillation is detected, data nodes are inserted into the remaining node chain to refine the step size and suppress oscillation; when no oscillation is detected, data nodes are removed from the remaining node chain to increase the step size and improve the control speed. The degree of oscillation is positively correlated with the number of inserted nodes; the more severe the oscillation, the more nodes are inserted, the smaller the voltage step size, and the smoother the adjustment, achieving adaptive elastic scaling of the node chain. When inserting a new data node, the transitional operation data corresponding to the previous node in the reference node pair that triggered the oscillation threshold is used as the new adjustment starting point, ensuring that the completed adjustment process is not affected by the node insertion. The transitional operation data of the executed portion remains unchanged, without the need for backtracking or readjustment, achieving lossless continuation of the adjustment process and ensuring the continuity of converter mode switching. A capture point is set at the last data node position of the target node chain, and the actual data value of the converter is collected in real time through the capture point. Mode switching is only performed when the actual data value reaches the target data value. The actual data value at the time of switching is precisely matched with the initial data value of the target operating mode, avoiding electrical shocks caused by parameter mismatch. When dynamically adjusting the node chain, only the transitional operation data of the remaining node chain between the adjustment starting point and the capture point is redistributed. The data nodes before the node insertion point remain unchanged, and the transitional operation data that has been executed is not recalculated. The amount of data migration and computational overhead is reduced proportionally to the adjustment progress, reducing system resource consumption. The node chain parameters are dynamically adjusted based on real-time monitoring of oscillations, enabling mode switching to adapt to different load conditions, ambient temperatures, and grid operating conditions. This ensures the safe and stable operation of the converter under various operating conditions. During the DC-DC converter's startup, the node chain buffers and regulates the voltage, gradually adjusting the actual voltage value to the target value, thus regulating the voltage loop and switching the converter's operating mode. During the switching process, the voltage command remains stable, ensuring a smooth and seamless transition between different operating modes and guaranteeing the safe and stable operation of the equipment.

[0031] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0032] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A method for online switching control of multiple operating modes of a DC-DC converter, characterized in that, Includes the following steps: Determine multiple operating modes of the converter and construct a mode node network based on these multiple operating modes; A monitoring entity is set up for the pattern node network, wherein the monitoring entity includes monitoring points, capture points and node chains; Determine the current operating mode of the converter, and acquire the actual operating data of the current operating mode in real time based on the monitoring body; acquire the target operating data of the target operating mode in real time based on the capture point; determine the target node chain based on the actual operating data and the target operating data; When the current operating mode ends, the actual value is adjusted to the target data value based on the target node chain. When the actual data value reaches the target data value, the converter is switched from the current operating mode to the next operating mode.

2. The online switching control method for multiple operating modes of a DC-DC converter according to claim 1, characterized in that: The steps of determining multiple operating modes of the converter and constructing a mode node network based on these multiple operating modes include: Obtain multiple operating modes of the converter and configure a mode node for each operating mode; Multiple nodes in the aforementioned operating modes are connected to form a mode node network.

3. The online switching control method for multiple operating modes of a DC-DC converter according to claim 1, characterized in that: The steps for setting up monitoring bodies in the mode node network include: Monitoring points and capture points are set for the pattern node network. The monitoring point corresponds to the pattern node corresponding to the current running mode in the pattern node network, and the capture point corresponds to the pattern node corresponding to the target running mode in the pattern node network. Multiple data nodes are set up between the monitoring point and the capture point to form a node chain, and a management terminal is configured for the node chain; the node chain of the monitoring point, capture point and configuration management terminal is used as the monitoring body.

4. The online switching control method for multiple operating modes of a DC-DC converter according to claim 3, characterized in that: The steps of setting up multiple data nodes between monitoring points and capture points to form a node chain, and configuring the management terminal for the node chain include: The monitoring system is configured with tracking points and management points. Multiple data nodes are stored in the management points, and the tracking points and management points are used as management terminals. A node chain is formed by sequentially connecting monitoring points, multiple data nodes, and capture points, and communication connections are established between multiple data nodes located on the node chain. Establish a communication connection between the tracking point and the management point. The tracking point is used to collect current characteristic parameters flowing between adjacent data nodes in real time, and the management point is used to update and manage the node chain.

5. The online switching control method for multiple operating modes of a DC-DC converter according to claim 1, characterized in that: The current operating mode of the converter is determined by acquiring the actual operating data of the current operating mode in real time based on the monitoring body. Real-time acquisition of target operation data based on capture points to determine the target's operating mode; The steps for determining the target node chain based on actual operational data and target operational data include: Determine the current operating mode of the converter, obtain the actual operating data of the last step of the current operating mode based on the monitoring points, obtain the target operating data of the target operating mode based on the capture points, and establish a node chain based on the actual operating data and the target operating data; The management end distributes multiple data nodes on the node chain, and connects the monitoring points, multiple data nodes and capture points to obtain the initial node chain. Each data node corresponds to a transitional running data. The current parameters between two adjacent nodes in the initial node chain are acquired in real time. The current characteristic parameters are compared with the preset oscillation threshold. The management point manages the data nodes in the node chain according to the comparison results to obtain the target node chain.

6. The online switching control method for multiple operating modes of a DC-DC converter according to claim 5, characterized in that: The steps of obtaining the current parameters between two adjacent nodes in the initial node chain in real time, comparing the current characteristic parameters with a preset oscillation threshold, and managing the data nodes in the node chain based on the comparison results to obtain the target node chain include: Real-time acquisition of current parameters between two adjacent nodes in the initial node chain, including current change rate and current fluctuation amplitude; Determine whether the current parameters meet the preset oscillation threshold; When the current parameter meets the preset oscillation threshold, the management point distributes and inserts new data nodes into the node chain. The new data nodes are inserted into the remaining node chain after the current data node, and a communication connection is established between the new data nodes and other data nodes. The corresponding transition operation data is re-formulated for each data node in the remaining node chain after the insertion of the new data node, so that the transition operation data corresponding to the data nodes in the remaining node chain are arranged in arithmetic descending order to obtain the updated target node chain. When the current parameter does not meet the preset oscillation threshold, the management point randomly selects a data node from the remaining node chain, and re-formulates the corresponding transition operation data for each data node in the remaining node chain after the data node is selected, so that the transition operation data corresponding to the data nodes in the remaining node chain are in an arithmetic progression state, and the updated target node chain is obtained.

7. The online switching control method for multiple operating modes of a DC-DC converter according to claim 1, characterized in that: The steps of adjusting the actual value to the target data value based on the target node chain when the current operating mode ends, and switching the converter from the current operating mode to the next operating mode when the actual data value reaches the target data value, include: When the current running mode ends, obtain the target node chain corresponding to the current running mode; According to the arrangement order of data nodes in the target node chain of the capture point, the actual data value of the capture point converter is adjusted to the transition operation data corresponding to each data node in turn; After completing the transitional data adjustment for one data node, it automatically jumps to the next data node to continue the adjustment. When the adjustment reaches the last data node in the target node chain of the capture point, it means that the actual data value has reached the target data value, and the converter will switch from the current operating mode to the next operating mode.

8. A DC-DC converter online switching control system for multiple operating modes, applied to the DC-DC converter online switching control method for multiple operating modes as described in any one of claims 1-7, characterized in that, include: The module is used to determine the multiple operating modes of the converter and to build a mode node network based on these multiple operating modes. A monitoring entity is set up for the pattern node network, wherein the monitoring entity includes monitoring points, capture points and node chains; The control and transition module is used to determine the current operating mode of the converter, acquire the actual operating data of the current operating mode in real time based on the monitoring body, acquire the target operating data of the target operating mode in real time based on the capture point, and determine the target node chain based on the actual operating data and the target operating data. The mode switching module is used to adjust the actual value to the target data value based on the target node chain when the current operating mode ends, and to switch the converter from the current operating mode to the next operating mode when the actual data value reaches the target data value.

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