CN118380975A - Direct current bus short-circuit protection control method and device of range extender and range extender system - Google Patents
Direct current bus short-circuit protection control method and device of range extender and range extender system Download PDFInfo
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- CN118380975A CN118380975A CN202410545365.6A CN202410545365A CN118380975A CN 118380975 A CN118380975 A CN 118380975A CN 202410545365 A CN202410545365 A CN 202410545365A CN 118380975 A CN118380975 A CN 118380975A
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- 239000003990 capacitor Substances 0.000 claims description 12
- 238000004804 winding Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 abstract description 7
- 238000011217 control strategy Methods 0.000 abstract description 3
- 238000004590 computer program Methods 0.000 description 17
- 238000010248 power generation Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
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- 230000008878 coupling Effects 0.000 description 3
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/22—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
- H02H3/087—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current for DC applications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/268—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured for DC systems
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Abstract
The invention discloses a direct current bus short-circuit protection control method and device of a range extender and a range extender system, comprising the steps of detecting whether a short-circuit fault occurs in the direct current bus of the range extender; when a short circuit fault is detected to occur on a direct current bus of the range extender, starting active short circuit protection, and receiving a short circuit protection instruction by an engine controller of the range extender to control the speed reduction of an engine of the range extender; and the generator controller of the range extender receives the short-circuit protection instruction to control the generator of the range extender to generate braking torque so as to accelerate the engine to stop rotating. According to the invention, the direct-current bus short-circuit protection is realized only by a control strategy, a detection loop and a switch are not required to be additionally added, the equipment cost is not required to be increased, and the direct-current bus short-circuit protection can be rapidly realized.
Description
Technical Field
The invention relates to the field of bus short-circuit protection, in particular to a direct-current bus short-circuit protection control method and device of a range extender and a range extender system.
Background
In order to solve the problem of short circuit detection of a direct current output bus of the range extender, a detection protection unit and a thermistor are additionally arranged between a controller of the range extender and a battery pack, and a starting switch in a control loop is used for protecting the direct current loop through detecting a level signal. The automobile control system has the defects that a detection loop and a switch are added between an additional controller and the battery pack, more circuit units are added, the control is complex, the cost is increased, a large space volume is occupied, and the arrangement space requirement on an automobile is high.
Disclosure of Invention
The embodiment of the invention provides a direct current bus short-circuit protection control method and device of a range extender and a range extender system, which are used for solving the problems of complex short-circuit protection control and high cost caused by adding a detection loop in the prior art.
A direct current bus short-circuit protection control method of a range extender comprises the following steps:
Detecting whether a short circuit fault occurs in a direct current bus of the range extender;
When a short-circuit fault is detected to occur on a direct current bus of the range extender, starting the short-circuit protection of the direct current bus, and receiving a short-circuit protection instruction by an engine controller of the range extender to control the speed reduction of an engine of the range extender; and the generator controller of the range extender receives a short-circuit protection instruction to control the generator of the range extender to generate braking torque so as to accelerate the engine to stop rotating.
A direct current bus short circuit protection control device of a range extender comprises:
The generator controller is used for detecting whether a short circuit fault occurs in a direct current bus of the range extender; when a short circuit fault is detected to occur on a direct current bus of the range extender, a fault state signal is sent to the whole vehicle controller, and a short circuit protection instruction sent by the whole vehicle controller is received so as to control a generator of the range extender to generate braking torque and accelerate the engine to stop rotating;
And the engine controller is used for receiving a short-circuit protection instruction sent by the whole vehicle controller so as to control the engine of the range extender to reduce speed.
A range extender system, the range extender system comprising:
The control output end of the engine controller is connected with the control input end of the engine;
the control output end of the generator controller is connected with the control input end of the generator;
the generator controller and the engine controller are used for jointly realizing the direct current bus short-circuit protection control method.
According to the direct current bus short-circuit protection control method, the direct current bus short-circuit protection control device and the range extender system, when the direct current bus of the range extender has a short-circuit fault, short-circuit protection instructions are respectively sent to the engine and the generator of the range extender, on one hand, the engine of the range extender is controlled to reduce speed, on the other hand, the generator of the range extender is controlled to generate braking torque, and the engine is accelerated to stop rotating. The invention realizes active short-circuit protection only by a control strategy, does not need to additionally increase a detection loop and a switch, does not need to increase equipment cost, and can rapidly realize direct current bus short-circuit protection.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments of the present invention will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an application environment of a method for controlling short-circuit protection of a DC bus of a range extender according to an embodiment of the present invention;
FIG. 2 is a flow chart of a method for controlling the short-circuit protection of a DC bus of a range extender according to an embodiment of the invention;
FIG. 3 is another flow chart of a method for controlling the short-circuit protection of a DC bus of a range extender according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a DC bus short-circuit protection control device according to an embodiment of the invention;
FIG. 5 is a circuit topology of a range extender system in an embodiment of the invention;
FIG. 6 is a schematic diagram of a computer device in accordance with an embodiment of the invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The direct current bus short-circuit protection control method of the range extender provided by the embodiment of the invention can be applied to an application environment shown in figure 1. Specifically, the direct current bus short-circuit protection control method is applied to a range extender system, the range extender system comprises an engine controller and a generator controller which are shown in fig. 1, and the engine controller and the generator controller are respectively communicated with a whole vehicle controller through a network and are used for realizing direct current bus short-circuit protection control of the range extender.
In one embodiment, as shown in fig. 2, a method for controlling short-circuit protection of a dc bus of a range extender is provided, and the method is applied to the engine controller and the generator controller in fig. 1, and includes the following steps:
s201, detecting whether a short circuit fault occurs in a direct current bus of the range extender;
The direct current bus voltage of the range extender can be monitored in real time, and when the direct current bus voltage is detected to drop to or below a certain fault voltage threshold value Uh, the short circuit fault of the direct current bus is judged. Specifically, the fault voltage threshold Uh may be a highest threshold set according to past historical fault voltage data.
S202, when a short-circuit fault is detected to occur to a direct current bus of the range extender, starting the short-circuit protection of the direct current bus, and receiving a short-circuit protection instruction by an engine controller of the range extender to control the speed reduction of an engine of the range extender; and the generator controller of the range extender receives a short-circuit protection instruction to control the generator of the range extender to generate braking torque so as to accelerate the engine to stop rotating.
When the short-circuit fault is judged to be sent by the direct-current target, the short-circuit fault state bit SC is fed back to the whole vehicle controller by the generator controller, and when the whole vehicle controller judges that the short-circuit fault state bit SC is effective, the power generation mode is controlled to be exited, the short-circuit protection mode is entered, and the active short-circuit protection is started. The method comprises the following steps: the vehicle controller sends a short-circuit protection instruction to the engine controller and the generator controller, and the engine controller receives the instruction and then controls the engine to slow down; after receiving the instruction, the generator controller controls the generator to generate braking torque so as to accelerate the engine to stop rotating.
According to the direct-current bus short-circuit protection control method, when the direct-current bus of the range extender has a short-circuit fault, short-circuit protection instructions are respectively sent to the engine and the generator of the range extender, so that on one hand, the engine speed reduction of the range extender is controlled, on the other hand, the generator of the range extender is controlled to generate braking torque, and the engine is accelerated to stop rotating. The invention utilizes the existing range extender system to realize active short-circuit protection only by a control strategy, does not need to additionally increase a detection loop and a switch, and can rapidly realize direct-current bus short-circuit protection without increasing equipment cost. After the direct current output bus of the range extender system is short-circuited, the short-circuit current flowing through the direct current output bus is equal to the short-circuit current of the motor, the short-circuit current is not too large, and the control system protects and controls the delay at ms level, so that the protection effect can be achieved.
In an embodiment, as shown in fig. 3, the method for controlling a short-circuit fault of a dc bus further includes:
After a generator controller receives a short-circuit protection instruction, acquiring the current rotating speed of the generator in real time;
When the current rotating speed of the generator is larger than a preset high rotating speed threshold value, entering an active short-circuit protection mode, and controlling the generator of the range extender to generate a first braking torque;
When the current rotating speed of the generator is not greater than a preset high rotating speed threshold value, entering a power device closing protection mode, and controlling the generator of the range extender to generate a second braking torque, wherein the second braking torque is smaller than the first braking torque.
In consideration of that a larger torque is generated when the rotation speed of the generator is lower, which has an adverse effect on the stop of the engine crankshaft, by detecting the current rotation speed of the generator, when the current rotation speed of the generator is higher, for example, greater than a high rotation speed threshold value w1, the ASC (Active Short Circuit ) protection mode is entered, and the higher first braking torque generated by the generator is utilized to assist in accelerating the stop rotation of the engine.
When the current rotation speed of the generator is lower, for example, less than or equal to a high rotation speed threshold value w1, the SPO (SWITCHING PULSE OFF, power device off-line) protection mode is entered, and the generator of the range extender is controlled to generate lower second braking torque to assist in accelerating the stop rotation of the engine.
When the generator controller GCU detects that the generator rotating speed is reduced to 0, the exiting short-circuit protection state is sent to the whole vehicle controller VCU, when the whole vehicle controller VCU receives the exiting short-circuit protection state of the generator controller GCU, the exiting short-circuit protection mode is controlled to enter a shutdown mode, a shutdown command is sent to the engine controller EMS and the generator controller GCU to stop working, a fault state bit SC is stored until the fault is recovered and manually cleared, the next starting operation can be performed, and otherwise, starting is forbidden.
According to the direct-current bus short-circuit protection control method, the braking torque of different magnitudes is controlled to be generated by detecting and judging the current rotating speed of the generator in real time, the crankshaft of the engine is more reasonably accelerated to stop rotating, and the action time of counter electromotive force of the generator is shortened.
In one embodiment, the controlling the generator of the range extender to generate the first braking torque includes:
And controlling the upper bridge arm switching tube or the lower bridge arm switching tube of the generator controller to be all conducted so as to actively short-circuit the three-phase windings of the generator and enable the generator to generate a first braking torque.
After entering an ASC protection mode, the generator controller controls the upper bridge arm or the lower bridge arm to be all conducted, so that the three-phase windings of the motor are actively short-circuited, current is prevented from flowing to the side of the direct-current bus, braking torque is generated, the rotation of a crankshaft of the engine is accelerated, and the action time of counter electromotive force of the generator is shortened.
In one embodiment, the controlling the generator of the range extender to generate the second braking torque includes:
And controlling the upper bridge arm switching tube and the lower bridge arm switching tube of the generator controller to be closed completely, so that the generator generates a second braking torque lower than the first braking torque.
After entering the SPO protection mode, the upper bridge arm switch tube and the lower bridge arm switch are closed completely, so that impact of braking torque on an engine crankshaft is reduced.
In one embodiment, sending a short-circuit protection command to an engine controller of the range extender to control an engine deceleration of the range extender includes:
and after receiving the short-circuit protection instruction, the engine controller of the range extender generates a zero torque instruction and controls the engine to slow down.
According to the direct current bus short-circuit protection control method, the engine controller and the generator controller are matched, so that the short-circuit protection of the direct current output bus of the range extender can be solved, the range extender system can be effectively isolated from the short-circuit loop, short-circuit protection can be realized without an external circuit, and the range extender system is effectively protected.
In an embodiment, as shown in fig. 3, the detecting whether the dc bus of the range extender has a short circuit fault includes:
and acquiring the supporting capacitor voltage of the generator controller in real time, and judging that the direct current bus has short circuit fault when the supporting capacitor voltage is continuously smaller than or equal to a preset voltage threshold value in a continuous preset time period.
The circuit output end (i.e. the direct current output bus end) of the generator controller is connected in parallel with a supporting capacitor, when the direct current output bus loop is short-circuited, the energy on the supporting capacitor can be released through the short-circuit loop loss, so that the short-circuit fault of the direct current bus can be confirmed by detecting the voltage Udc of the supporting capacitor in a continuous preset time period t when the voltage Udc of the supporting capacitor is smaller than or equal to a preset voltage threshold U. And the generator controller GCU feeds the short-circuit fault state bit SC back to the whole vehicle controller VCU, and when the logic of the short-circuit fault state bit SC is TRUE, the short-circuit fault is established.
It should be understood that the sequence number of each step in the foregoing embodiment does not mean that the execution sequence of each process should be determined by the function and the internal logic, and should not limit the implementation process of the embodiment of the present invention.
In an embodiment, a dc bus short-circuit protection control device of a range extender is provided, where the dc bus short-circuit protection control device corresponds to the dc bus short-circuit protection control method in the foregoing embodiment one by one. As shown in fig. 4, the dc bus short-circuit protection control device includes a generator controller 41 and an engine controller 42. The functional modules are described in detail as follows:
A generator controller 41 for detecting whether a short circuit fault occurs in the dc bus of the range extender; when a short circuit fault is detected to occur on a direct current bus of the range extender, a fault state signal is sent to the whole vehicle controller, and a short circuit protection instruction sent by the whole vehicle controller is received so as to control a generator of the range extender to generate braking torque and accelerate the engine to stop rotating;
And the engine controller 42 is used for receiving a short-circuit protection instruction sent by the whole vehicle controller so as to control the engine speed reduction of the range extender.
Optionally, the generator controller 41 is further configured to obtain, in real time, a current rotation speed of the generator after receiving the short-circuit protection command; when the current rotating speed of the generator is larger than a preset high rotating speed threshold value, controlling the generator of the range extender to generate a first braking torque; and when the current rotating speed of the generator is not greater than a preset high rotating speed threshold value, controlling the generator of the range extender to generate a second braking torque, wherein the second braking torque is smaller than the first braking torque.
Optionally, the generator controller 41 is further configured to control all of the upper bridge arm switching tubes or the lower bridge arm switching tubes of the generator controller to be turned on, so as to actively short-circuit the three-phase windings of the generator, and enable the generator to generate the first braking torque.
Optionally, the generator controller 41 is further configured to control the upper bridge arm switching tube and the lower bridge arm switching tube of the generator controller to be turned off completely, so that the generator generates a second braking torque lower than the first braking torque.
Optionally, the engine controller 42 is configured to generate a zero torque command after receiving the short-circuit protection command, and control the engine to slow down.
Optionally, the generator controller 41 is further configured to obtain, in real time, a supporting capacitor voltage of the generator controller, and determine that the dc bus has a short circuit fault when the supporting capacitor voltage is detected to be continuously less than or equal to a preset voltage threshold in a continuous preset time period.
The specific limitation of the dc bus short-circuit protection control device may be referred to the limitation of the dc bus short-circuit protection control method hereinabove, and will not be described herein. All or part of each module in the direct current bus short-circuit protection control device can be realized by software, hardware and a combination thereof. The above modules may be embedded in hardware or may be independent of a processor in the computer device, or may be stored in software in a memory in the computer device, so that the processor may call and execute operations corresponding to the above modules.
In one embodiment, as shown in fig. 5, the range extender system circuit topology comprises an engine, an engine controller (EMS), a generator, and a Generator Controller (GCU), wherein a control output of the engine controller is connected to a control input of the engine, a control output of the generator controller is connected to a control input of the generator, an engine crankshaft is connected to a generator rotor shaft, the engine controller EMS is used to control the engine, and the generator controller GCU is used to control the generator.
The engine controller EMS and the generator controller GCU are respectively communicated and interacted with the whole vehicle controller VCU, under the normal power generation working condition, the whole vehicle controller VCU transmits a torque command to the engine controller EMS to control the torque of the engine, and transmits a rotating speed command to the engine controller GCU to control the rotating speed of the generator, so that the power generation is controlled. The rotating speed signal of the motor is fed back to the generator controller GCU in real time through hard wire connection. Under the power generation operation of the range extender system, the engine drives the generator to rotate, when the output end AB of the direct current bus is short-circuited, if the counter electromotive force of the generator is too high, current flows through the generator controller GCU through the diode uncontrollable rectification, and if the current is not processed in time, the generator controller GCU is damaged.
The generator controller and the engine controller of the embodiment are used for jointly realizing the direct current bus short-circuit protection control method in the embodiment of the direct current bus short-circuit protection control method.
Optionally, the range extender system further includes a complete vehicle controller VCU, configured to receive a fault state signal sent by the generator controller, determine that a short circuit fault occurs in the direct current bus according to the fault state signal, and send a short circuit protection instruction to the engine controller and the generator controller respectively.
As shown in fig. 3, when the system is in operation, the generator controller GCU detects the supporting capacitor voltage Udc in real time and compares the supporting capacitor voltage Udc with the voltage threshold U to be preset, if Udc is less than or equal to U in the time t, the generator controller GCU feeds back the short-circuit fault status bit SC to the vehicle controller VCU, and when the SC logic is TRUE, the short-circuit fault is established.
When the VCU judges that SC is TRUE, the VCU exits the power generation mode and enters a short-circuit protection mode, short-circuit protection instructions are respectively given to the EMS and the GCU, the EMS sends a zero torque instruction to reduce the speed of the engine, the GCU compares the current rotation speed W of the generator with a rotation speed threshold W1, when W is larger than W1, an ASC protection mode is used, and when W is smaller than or equal to W1, an SPO protection mode is used. When the generator controller GCU detects that the generator rotational speed drops to 0, the generator controller GCU issues an exit short-circuit protection state to the vehicle controller VCU.
According to the range extender system, the protection of the direct current output bus of the range extender can be improved, the range extender system can be effectively isolated from a short circuit loop, short circuit protection can be achieved without an external circuit, and the range extender system is effectively protected.
In one embodiment, fig. 6 is a schematic structural diagram of a computer device according to a fourth embodiment of the present invention. As shown in fig. 6, the computer device of this embodiment includes: at least one processor (only one shown in fig. 6), a memory, and a computer program stored in the memory and executable on the at least one processor, the processor executing the computer program to perform the steps of any of the various method embodiments described above.
The computer device may include, but is not limited to, a processor, a memory. It will be appreciated by those skilled in the art that fig. 6 is merely an example of a computer device and is not intended to be limiting, and that a computer device may include more or fewer components than shown, or may combine certain components, or different components, such as may also include a network interface, a display screen, an input device, and the like.
The Processor may be a CPU, but may also be other general purpose processors, digital signal processors (DIGITAL SIGNAL processors, DSPs), application SPECIFIC INTEGRATED Circuits (ASICs), off-the-shelf Programmable gate arrays (Field-Programmable GATE ARRAY, FPGA) or other Programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory includes a readable storage medium, an internal memory, etc., where the internal memory may be the memory of the computer device, the internal memory providing an environment for the execution of an operating system and computer-readable instructions in the readable storage medium. The readable storage medium may be a hard disk of a computer device, and in other embodiments may be an external storage device of a computer device, for example, a plug-in hard disk, a smart memory card (SMART MEDIA CARD, SMC), a Secure Digital (SD) card, a flash memory card (FLASH CARD), etc. that are provided on a computer device. Further, the memory may also include both internal storage units and external storage devices of the computer device. The memory is used to store an operating system, application programs, boot loader (BootLoader), data, and other programs such as program codes of computer programs, and the like. The memory may also be used to temporarily store data that has been output or is to be output.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-described division of the functional units and modules is illustrated, and in practical application, the above-described functional distribution may be performed by different functional units and modules according to needs, i.e. the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-described functions. The functional units and modules in the embodiment may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit, where the integrated units may be implemented in a form of hardware or a form of a software functional unit. In addition, the specific names of the functional units and modules are only for distinguishing from each other, and are not used for limiting the protection scope of the present invention. The specific working process of the units and modules in the above device may refer to the corresponding process in the foregoing method embodiment, which is not described herein again. The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the present invention may implement all or part of the flow of the method of the above-described embodiment, and may be implemented by a computer program to instruct related hardware, and the computer program may be stored in a computer readable storage medium, where the computer program, when executed by a processor, may implement the steps of the method embodiment described above. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, executable files or in some intermediate form, etc. The computer readable medium may include at least: any entity or device capable of carrying computer program code, a recording medium, a computer Memory, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), an electrical carrier signal, a telecommunications signal, and a software distribution medium. Such as a U-disk, removable hard disk, magnetic or optical disk, etc. In some jurisdictions, computer readable media may not be electrical carrier signals and telecommunications signals in accordance with legislation and patent practice.
The present invention may also be implemented as a computer program product for implementing all or part of the steps of the method embodiments described above, when the computer program product is run on a computer device, causing the computer device to execute the steps of the method embodiments described above.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and in part, not described or illustrated in any particular embodiment, reference is made to the related descriptions of other embodiments.
In an embodiment, a computer readable storage medium is provided, and a computer program is stored on the computer readable storage medium, and when the computer program is executed by a processor, the method for controlling the short-circuit protection of the dc bus in the above embodiment is implemented, for example, S201 to S202 shown in fig. 2, and in order to avoid repetition, a description is omitted here. Or when executed by a processor, the computer program implements the functions of each module/unit in the embodiment of the dc bus short-circuit protection control device, for example, the dc bus short-circuit protection control function shown in fig. 3, which is not repeated herein.
Those skilled in the art will appreciate that implementing all or part of the above described methods may be accomplished by way of a computer program stored on a non-transitory computer readable storage medium, which when executed, may comprise the steps of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in embodiments provided herein may include non-volatile and/or volatile memory. The nonvolatile memory can include Read Only Memory (ROM), programmable ROM (PROM), electrically Programmable ROM (EPROM), electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (SYNCHLINK) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), among others.
The present invention may also be implemented as a computer program product for implementing all or part of the steps of the method embodiments described above, when the computer program product is run on a computer device, causing the computer device to execute the steps of the method embodiments described above.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and in part, not described or illustrated in any particular embodiment, reference is made to the related descriptions of other embodiments.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
In the embodiments provided by the present invention, it should be understood that the disclosed apparatus/computer device and method may be implemented in other manners. For example, the apparatus/computer device embodiments described above are merely illustrative, e.g., the division of modules or units is merely a logical functional division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection via interfaces, devices or units, which may be in electrical, mechanical or other forms.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
The above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention, and are intended to be included in the scope of the present invention.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410545365.6A CN118380975A (en) | 2024-04-30 | 2024-04-30 | Direct current bus short-circuit protection control method and device of range extender and range extender system |
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| CN103192734A (en) * | 2013-03-20 | 2013-07-10 | 哈尔滨理工大学 | Range extender of city electric motor coach based on electric air conditioner and control method for range extender |
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| CN214057260U (en) * | 2020-09-18 | 2021-08-27 | 盐城工学院 | An electric vehicle range extender |
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| CN103192734A (en) * | 2013-03-20 | 2013-07-10 | 哈尔滨理工大学 | Range extender of city electric motor coach based on electric air conditioner and control method for range extender |
| CN105143645A (en) * | 2013-04-22 | 2015-12-09 | 三菱电机株式会社 | Engine shutdown control device and engine shutdown control method |
| CN103901301A (en) * | 2014-03-21 | 2014-07-02 | 北京天诚同创电气有限公司 | Fault diagnosis method for frequency converter |
| CN214057260U (en) * | 2020-09-18 | 2021-08-27 | 盐城工学院 | An electric vehicle range extender |
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