CN110966129B - Diesel engine control system, control method and controller - Google Patents
Diesel engine control system, control method and controller Download PDFInfo
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- CN110966129B CN110966129B CN201811151748.6A CN201811151748A CN110966129B CN 110966129 B CN110966129 B CN 110966129B CN 201811151748 A CN201811151748 A CN 201811151748A CN 110966129 B CN110966129 B CN 110966129B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N11/00—Starting of engines by means of electric motors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B63/00—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices
- F02B63/04—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices for electric generators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N11/00—Starting of engines by means of electric motors
- F02N11/08—Circuits specially adapted for starting of engines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N11/00—Starting of engines by means of electric motors
- F02N11/08—Circuits specially adapted for starting of engines
- F02N11/0862—Circuits specially adapted for starting of engines characterised by the electrical power supply means, e.g. battery
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Abstract
The invention provides a diesel engine control system, a control method and a controller, wherein the system comprises a diesel engine, an asynchronous motor, a rectifier, a charging device and a controller, the diesel engine is respectively connected with the asynchronous motor and the controller, the rectifier is respectively connected with the asynchronous motor, the charging device and the controller, and the controller is used for controlling the on-off of the charging device according to the current rotating speed of the diesel engine. When the current rotating speed is lower than a first preset rotating speed, the charging device is controlled to charge the support capacitor of the rectifier, and when the voltage value of the support capacitor meets a preset condition, the rectifier is controlled to provide three-phase alternating current for the asynchronous motor, so that the asynchronous motor works under the working condition of the motor to drive the diesel engine to work. The diesel engine control system adopts the asynchronous motor, does not need a special starting motor to drive the diesel engine to work, realizes the monitoring of the working state of the diesel engine through the controller, not only saves the space, but also realizes the automatic control of the system.
Description
Technical Field
The embodiment of the invention relates to the technical field of diesel engines, in particular to a diesel engine control system, a diesel engine control method and a diesel engine controller.
Background
The diesel generator set is a power supply device which takes a diesel engine as a prime mover and drags a synchronous generator to generate electricity, and is a generating set which has the advantages of quick start, convenient operation and maintenance, less operation and less investment and has stronger adaptability to the environment. The starting performance of a diesel engine in a diesel generating set is good and bad, the starting performance is very important to the usability of the diesel engine, the starting performance is poor, time and labor are wasted, and the normal use of the diesel engine is seriously influenced.
Because the diesel engine can not be automatically switched from a static state to a working state, the crankshaft must be rotated by external force until the crankshaft reaches the rotating speed necessary for the diesel engine to start combustion. At present, a starting motor is generally used for driving a diesel engine to enter a working state in a starting stage of the diesel engine. The starting motor comprises a direct current motor and a transmission structure, wherein the storage battery supplies power to the direct current motor, the transmission structure drives the diesel engine to start, when the diesel engine starts normally, the direct current motor serves as a direct current generator, the diesel engine drives the direct current generator to generate power, and the storage battery is charged for the next starting and the power utilization of load equipment.
The starting motor is required to be used in the scheme, the space is occupied, and the starting motor is required to be controlled independently.
Disclosure of Invention
The invention provides a diesel engine control system, a control method and a controller, a special starting motor is not needed to drive a diesel engine to work, the working state of the diesel engine is monitored through the controller, not only is the space saved, but also the automatic control of the system is realized.
A first aspect of the present invention provides a diesel engine control system comprising: the device comprises a diesel engine, an asynchronous motor, a rectifier, a charging device and a controller; the diesel engine is respectively connected with the asynchronous motor and the controller, and the rectifier is respectively connected with the asynchronous motor, the charging device and the controller;
the controller is used for acquiring the current rotating speed of the diesel engine;
when the current rotating speed is lower than a first preset rotating speed, controlling the charging device to charge a support capacitor of the rectifier;
and when the voltage value of the supporting capacitor meets a preset condition, controlling the rectifier to provide three-phase alternating current for the asynchronous motor so that the asynchronous motor works under the working condition of the motor to drive the diesel engine to work.
In one possible implementation, the system further comprises an overvoltage limiter connected to the rectifier;
the overvoltage limiter is used for converting the direct-current voltage output by the rectifier into the voltage required by the work of load equipment.
In one possible implementation, the switching device is an insulated gate bipolar transistor IGBT, or a metal oxide semiconductor field effect transistor MOSFET.
In one possible implementation, the charging device is a battery.
A second aspect of the present invention provides a diesel engine control method applied to the diesel engine control system according to any one of the first aspects of the present invention, the method including:
acquiring the current rotating speed of the diesel engine;
when the current rotating speed is lower than a first preset rotating speed, controlling the charging device to charge a support capacitor of the rectifier;
and when the voltage value of the supporting capacitor meets a preset condition, controlling the rectifier to provide three-phase alternating current for the asynchronous motor so that the asynchronous motor works under the working condition of the motor to drive the diesel engine to work.
In a possible implementation manner, the controlling the rectifier to provide a three-phase alternating current for the asynchronous motor when the voltage value of the supporting capacitor meets a preset condition includes:
when the voltage value of the supporting capacitor is larger than or equal to a preset pressure value, a pulse control signal is sent to a switch device of the rectifier to control the on-off of the switch device, and three-phase alternating current is provided for the asynchronous motor.
In one possible implementation, the method further includes:
and when the current rotating speed is greater than or equal to a second preset rotating speed, controlling the charging device to be disconnected from the rectifier and controlling the rectifier to output direct current.
A third aspect of the present invention provides a controller comprising:
the acquisition module is used for acquiring the current rotating speed of the diesel engine;
the execution module is used for controlling a charging device to charge a support capacitor of the rectifier when the current rotating speed is lower than a first preset rotating speed;
the execution module is further used for controlling the rectifier to provide three-phase alternating current for the asynchronous motor when the voltage value of the supporting capacitor meets a preset condition, so that the asynchronous motor works under the working condition of the motor to drive the diesel engine to work.
A fourth aspect of the present invention provides a controller comprising:
a memory;
a processor; and
a computer program;
wherein the computer program is stored in the memory and configured to be executed by the processor to implement the method according to any one of the second aspects of the invention.
A fifth aspect of the invention provides a computer readable storage medium having stored thereon a computer program for execution by a processor to perform the method according to any one of the second aspects of the invention.
The embodiment of the invention provides a diesel engine control system, a diesel engine control method and a diesel engine controller. When the current rotating speed is lower than a first preset rotating speed, the charging device is controlled to charge the support capacitor of the rectifier, and when the voltage value of the support capacitor meets a preset condition, the rectifier is controlled to provide three-phase alternating current for the asynchronous motor, so that the asynchronous motor works under the working condition of the motor to drive the diesel engine to work. The diesel engine control system adopts the asynchronous motor, does not need a special starting motor to drive the diesel engine to work, realizes the monitoring of the working state of the diesel engine through the controller, not only saves the space, but also realizes the automatic control of the system.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a diesel engine control system according to an embodiment of the present invention;
FIG. 2 is a schematic connection diagram of a diesel engine control system according to an embodiment of the present invention;
fig. 3 is a schematic flow chart of a diesel engine control method according to an embodiment of the present invention;
FIG. 4 is a schematic flow chart illustrating a method for controlling a diesel engine according to another embodiment of the present invention;
fig. 5 is a schematic structural diagram of a controller according to an embodiment of the present invention;
fig. 6 is a schematic diagram of a hardware structure of a controller according to an embodiment of the present invention.
Description of reference numerals:
11-a diesel engine;
12-an asynchronous machine;
13-a rectifier;
14-a charging device;
15-a controller;
TV 1-voltage sensor;
IA 1-current sensor.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terms "first," "second," "third," and the like in the description and in the claims, and in the above-described drawings, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein.
It will be understood that the terms "comprises" and "comprising," and any variations thereof, as used herein, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Reference throughout this specification to "one embodiment" or "another embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the appearances of the phrases "in one embodiment" or "in this embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The diesel engine control system provided by the invention solves the problem that a starting motor is required when a diesel engine in a railway vehicle is started, and the vehicle is not required to provide extra three-phase alternating current for the starting motor, so that the space occupied by the starting motor is saved.
The following describes the diesel engine control system and the control method provided by the present invention in detail with reference to the specific embodiments and the accompanying drawings.
Fig. 1 is a schematic structural diagram of a diesel engine control system according to an embodiment of the present invention, and as shown in fig. 1, the diesel engine control system according to the embodiment includes:
the system comprises a diesel engine 11, an asynchronous motor 12, a rectifier 13, a charging device 14 and a controller 15; the diesel engine 11 is respectively connected with the asynchronous motor 12 and the controller 15, and the rectifier 13 is respectively connected with the asynchronous motor 12, the charging device 14 and the controller 15;
the controller 15 is used for acquiring the current rotating speed of the diesel engine 11;
when the current rotating speed is lower than a first preset rotating speed, controlling a charging device 14 to charge a support capacitor of the rectifier 13;
when the voltage value of the support capacitor meets the preset condition, the rectifier 13 is controlled to provide three-phase alternating current for the asynchronous motor 12, so that the asynchronous motor 12 works under the working condition of the motor to drive the diesel engine 11 to work.
In this embodiment, the asynchronous motor 12 is also called an induction motor, and is an ac motor that generates electromagnetic torque by interaction between an air gap rotating magnetic field and a rotor winding induced current, thereby converting electromechanical energy into mechanical energy.
Optionally, the asynchronous motor 12 of this embodiment is a three-phase asynchronous motor, the three-phase asynchronous motor is a motor powered by three-phase alternating current that is simultaneously switched in, a rotor and a stator rotating magnetic field of the three-phase asynchronous motor rotate in the same direction at different rotating speeds, and a slip ratio exists; the rotating speed of the rotor of the three-phase asynchronous motor is lower than that of a rotating magnetic field, and the rotor winding generates electromotive force and current due to relative motion between the rotor winding and the magnetic field and interacts with the magnetic field to generate electromagnetic torque so as to realize energy conversion.
Specifically, the asynchronous machine 12 may function as both a motor and a generator depending on various operating conditions. As a generator, the motor forms a rotating magnetic field by three-phase current of a stator, at the moment, a rotor cuts magnetic lines of force, receives electromagnetic force, rotates and converts electric energy into mechanical energy; when the rotor is excited as a generator, mechanical energy is converted into electrical energy when the rotor is subjected to mechanical torque, and the motor is converted into a generator.
In this embodiment, the rectifier 13 is a device for converting ac three-phase power generated by the asynchronous motor into dc power, and when the charging device 14 supplies power to the rectifier 13, the rectifier 13 may generate three-phase ac power with variable voltage and frequency according to instructions of the controller 15, so as to provide a three-phase power supply for the asynchronous motor 12.
The diesel engine control system provided by the embodiment of the invention comprises a diesel engine, an asynchronous motor, a rectifier, a charging device and a controller, wherein the diesel engine is respectively connected with the asynchronous motor and the controller, the rectifier is respectively connected with the asynchronous motor, the charging device and the controller, and the controller is used for controlling the on-off of the charging device according to the current rotating speed of the diesel engine. When the current rotating speed is lower than a first preset rotating speed, the charging device is controlled to charge the support capacitor of the rectifier, and when the voltage value of the support capacitor meets a preset condition, the rectifier is controlled to provide three-phase alternating current for the asynchronous motor, so that the asynchronous motor works under the working condition of the motor to drive the diesel engine to work. The diesel engine control system adopts the asynchronous motor, does not need a special starting motor to drive the diesel engine to work, realizes the monitoring of the working state of the diesel engine through the controller, not only saves the space, but also realizes the automatic control of the system.
Fig. 2 is a schematic connection diagram of a diesel engine control system according to an embodiment of the present invention, and based on the embodiment, the diesel engine control system according to the embodiment further includes: an overpressure limiter.
As shown in fig. 2, the overvoltage limiter of the present embodiment is connected to a rectifier;
the overvoltage limiter is used for converting the direct current voltage output by the rectifier into the voltage required by the load equipment to work.
Specifically, the over-voltage limiter includes a voltage sensor TV1 and a current sensor IA1, as shown in fig. 2.
The voltage sensor is a sensor capable of sensing the measured voltage and converting the measured voltage into a usable output signal, in various automatic detection and control systems, tracking and collecting alternating current and direct current voltage signals changing at high speed are often required, and the voltage sensor is adopted in the embodiment to collect the voltage value of the output end of the overvoltage limiter, so that the voltage value output to the load equipment is ensured to meet the requirement.
The current sensor is a detection device, can sense the information of the current to be detected, and can convert the detected current information into an electric signal meeting certain standard requirements or information in other required forms according to a certain rule and output the electric signal or the information in other required forms so as to meet the requirements of information transmission, processing, storage, display, recording, control and the like. The current value output by the current sensor in the embodiment meets the current value requirement of the load device.
In the implementation, the rectifier adopts a three-phase rectifier circuit topology structure and comprises six switching devices, each switching device of the rectifier is connected with the controller, and the controller sends instructions to the six switching devices according to monitoring results to control the on-off of the switching devices.
Specifically, the switching device is an insulated gate bipolar transistor IGBT or a metal oxide semiconductor field effect transistor MOSFET.
The IGBT is a composite fully-controlled voltage-driven power semiconductor device composed of a BJT (bipolar transistor) and an MOS (insulated gate field effect transistor), and has the advantages of both high input impedance of the MOSFET and low conduction voltage drop of the GTR. The GTR saturation voltage is reduced, the current carrying density is high, but the driving current is large; the MOSFET has small driving power, high switching speed, large conduction voltage drop and small current carrying density. The IGBT integrates the advantages of the two devices, and has small driving power and reduced saturation voltage. The method is very suitable for being applied to the fields of current transformation systems with direct-current voltage of 600V or more, such as alternating-current motors, frequency converters, switching power supplies, lighting circuits, traction transmission and the like.
The MOSFET is a field effect transistor in which a gate of a metal layer (M) controls a semiconductor (S) by the effect of an electric field through an oxide layer (O). MOSFETs are classified into two types, i.e., N-type and P-type, according to their "channel" (working carrier) polarities, and are also commonly referred to as NMOSFETs and PMOSFETs.
Optionally, the charging device of this embodiment is a storage battery, the storage battery includes a switching device, the switching device is the same as the switching device in the rectifier, and the specific structure and the working principle of the switching device refer to the above embodiments, which are not described herein again.
Optionally, the controller of this embodiment includes a DSP processor, where the DSP processor is respectively connected to each switching device in the rectifier and the switching device in the charging device through an interface, and the DSP processor sends a pulse control signal to each switching device through the interface to control on/off of each switching device.
It should be noted that, if the number of the switch devices is greater than the number of the interfaces of the DSP processor, the expansion of the interfaces of the DSP processor may be realized by adding the FPGA processor. Specifically, the DSP processor is connected with the FPGA processor, and the FPGA processor is connected with each switch device. Through the arrangement, the problem that the control of the switching device cannot be realized due to the limited number of the interfaces of the DSP is solved.
The diesel engine control system provided by the embodiment comprises a diesel engine, an asynchronous motor, a rectifier, a charging device, a controller and an overvoltage limiter, wherein the diesel engine is respectively connected with the asynchronous motor and the controller, the rectifier is respectively connected with the asynchronous motor, the charging device and the controller, and the overvoltage limiter is connected with the rectifier. The controller is used for controlling the on-off of the charging device according to the current rotating speed of the diesel engine. When the current rotating speed is lower than a first preset rotating speed, controlling a charging device to charge a support capacitor of a rectifier, and when the voltage value of the support capacitor meets a preset condition, controlling the rectifier to provide three-phase alternating current for an asynchronous motor so that the asynchronous motor works under the working condition of a motor to drive a diesel engine to work; the overvoltage limiter is used for converting the direct current voltage output by the rectifier into the voltage required by the load equipment to work. The diesel engine control system adopts the asynchronous motor, does not need a special starting motor to drive the diesel engine to work, realizes the monitoring of the working state of the diesel engine through the controller, not only saves the space, but also realizes the automatic control of the system.
Based on the diesel engine control system of each embodiment, the invention also provides a diesel engine control method, the execution main body of the control method is a controller in the diesel engine control system, and the real-time monitoring and control of the working state of the diesel engine are realized through the controller. The diesel engine control method provided by the invention is explained in detail with reference to specific embodiments.
Fig. 3 is a schematic flow chart of a diesel engine control method according to an embodiment of the present invention, and as shown in fig. 3, the diesel engine control method according to the embodiment includes the following steps:
s301, acquiring the current rotating speed of the diesel engine;
s302, when the current rotating speed is lower than a first preset rotating speed, controlling a charging device to charge a support capacitor of a rectifier;
and S303, when the voltage value of the supporting capacitor meets a preset condition, controlling the rectifier to provide three-phase alternating current for the asynchronous motor so that the asynchronous motor works under the working condition of the motor to drive the diesel engine to work.
As shown in fig. 2, when the voltage value of the supporting capacitor C1 of the rectifier is monitored to be greater than or equal to a preset pressure value (e.g., 750V), the controller sends a pulse control signal to the switching device of the rectifier to control the switching of the switching device, so as to provide three-phase alternating current for the asynchronous motor.
In this embodiment, the support capacitor of rectifier converts the electric energy into magnetic field energy, and under the effect in rotating magnetic field, control switch device makes the rotational speed in rotating magnetic field be less than asynchronous machine rotor rotational speed, and asynchronous machine work is under the motor operating mode this moment, and the motor drives the diesel engine work this moment.
According to the method for controlling the diesel engine, the current rotating speed of the diesel engine is obtained, and the rectifier is controlled to provide three-phase alternating current for the asynchronous motor when the current rotating speed is lower than the first preset rotating speed, so that the asynchronous motor works under the working condition of the motor to drive the diesel engine to reach the preset rotating speed.
Fig. 4 is a schematic flow chart of a diesel engine control method according to another embodiment of the present invention, and as shown in fig. 4, the diesel engine control method according to this embodiment includes the following steps:
s401, acquiring the current rotating speed of the diesel engine;
s402, when the current rotating speed is larger than or equal to a second preset rotating speed, the charging device is controlled to be disconnected from the rectifier, and the rectifier is controlled to output direct current.
In this embodiment, the controller sends a control signal to the switching device in the charging device to disconnect the charging device from the rectifier, and simultaneously sends a pulse control signal to the switching device of the rectifier to control the switching of the switching device, so that the rectifier outputs stable direct current.
According to the diesel engine control method provided by the embodiment, the current rotating speed of the diesel engine is obtained, and when the current rotating speed is greater than or equal to the second preset rotating speed, the charging device is controlled to be disconnected from the rectifier, and the rectifier is controlled to output stable direct current. By the method, the diesel engine can provide stable direct current for the load equipment, and normal work of the load equipment is ensured.
Fig. 5 is a schematic structural diagram of a controller according to an embodiment of the present invention, and as shown in fig. 5, the controller 50 according to this embodiment includes:
the acquisition module 51 is used for acquiring the current rotating speed of the diesel engine;
the execution module 52 is configured to control the charging device to charge the support capacitor of the rectifier when the current rotation speed is lower than a first preset rotation speed;
the execution module 52 is further configured to control the rectifier to provide three-phase alternating current for the asynchronous motor when the voltage value of the support capacitor meets a preset condition, so that the asynchronous motor operates under a working condition of the motor to drive the diesel engine to operate.
Optionally, the executing module 52 is specifically configured to send a pulse control signal to a switching device of the rectifier when the voltage value of the supporting capacitor is greater than or equal to a preset pressure value, control on/off of the switching device, and provide three-phase alternating current for the asynchronous motor.
Optionally, the executing module 52 is further configured to control the charging device to disconnect from the rectifier and control the rectifier to output the direct current when the current rotating speed is greater than or equal to a second preset rotating speed.
The controller provided in this embodiment may execute the technical solutions of the above method embodiments, and the implementation principles and technical effects are similar, which are not described herein again.
Fig. 6 is a schematic diagram of a hardware structure of a controller according to an embodiment of the present invention, and as shown in fig. 6, a controller 60 according to the embodiment of the present invention includes:
a memory 61;
a processor 62; and
a computer program;
wherein the computer program is stored in the memory 61 and configured to be executed by the processor 62 to implement the technical solution of any one of the foregoing method embodiments, and the implementation principle and technical effect thereof are similar, and are not described herein again.
Alternatively, the memory 61 may be separate or integrated with the processor 82.
When the memory 61 is a device independent of the processor 62, the controller 60 further includes:
a bus 63 for connecting the memory 61 and the processor 62.
Embodiments of the present invention also provide a computer-readable storage medium, on which a computer program is stored, where the computer program is executed by the processor 62 to implement the steps performed by the diesel engine control method in the above method embodiments.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described embodiments of the apparatus are merely illustrative, and for example, the division of modules is only one logical division, and other divisions may be realized in practice, for example, a plurality of modules may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or modules, and may be in an electrical, mechanical or other form.
Modules described as separate parts may or may not be physically separate, and parts displayed as modules may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
In addition, functional modules in the embodiments of the present invention may be integrated into one processing unit, or each module may exist alone physically, or two or more modules are integrated into one unit. The unit formed by the modules can be realized in a hardware form, and can also be realized in a form of hardware and a software functional unit.
The integrated module implemented in the form of a software functional module may be stored in a computer-readable storage medium. The software functional module is stored in a storage medium and includes several instructions to enable a computer device (which may be a personal computer, a server, or a network device) or a processor (processor) to execute some steps of the methods according to the embodiments of the present application.
It should be understood that the Processor may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in connection with the present invention may be embodied directly in a hardware processor, or in a combination of the hardware and software modules within the processor.
The memory may comprise a high-speed RAM memory, and may further comprise a non-volatile storage NVM, such as at least one disk memory, and may also be a usb disk, a removable hard disk, a read-only memory, a magnetic or optical disk, etc.
The bus may be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended ISA (EISA) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, the buses in the figures of the present application are not limited to only one bus or one type of bus.
The storage medium may be implemented by any type or combination of volatile or non-volatile memory devices, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.
An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an Application Specific Integrated Circuits (ASIC). Of course, the processor and the storage medium may reside as discrete components in an electronic device or host device.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A diesel engine control system, comprising: the device comprises a diesel engine, an asynchronous motor, a rectifier, a charging device and a controller; the diesel engine is respectively connected with the asynchronous motor and the controller, and the rectifier is respectively connected with the asynchronous motor, the charging device and the controller;
the controller is used for acquiring the current rotating speed of the diesel engine;
when the current rotating speed is lower than a first preset rotating speed, controlling the charging device to charge a support capacitor of the rectifier;
and when the voltage value of the supporting capacitor meets a preset condition, controlling the rectifier to provide three-phase alternating current for the asynchronous motor so that the asynchronous motor works under the working condition of the motor to drive the diesel engine to work.
2. The system of claim 1, further comprising an overvoltage limiter, the overvoltage limiter connected to the rectifier;
the overvoltage limiter is used for converting the direct-current voltage output by the rectifier into the voltage required by the work of load equipment.
3. The system of claim 1, wherein the switching device of the rectifier is an Insulated Gate Bipolar Transistor (IGBT) or a Metal Oxide Semiconductor Field Effect Transistor (MOSFET).
4. The system of claim 1, wherein the charging device is a battery.
5. A diesel engine control method applied to the diesel engine control system according to any one of claims 1 to 4, the method comprising:
acquiring the current rotating speed of the diesel engine;
when the current rotating speed is lower than a first preset rotating speed, controlling the charging device to charge a support capacitor of the rectifier;
and when the voltage value of the supporting capacitor meets a preset condition, controlling the rectifier to provide three-phase alternating current for the asynchronous motor so that the asynchronous motor works under the working condition of the motor to drive the diesel engine to work.
6. The method according to claim 5, wherein the controlling the rectifier to provide three-phase alternating current for the asynchronous motor when the voltage value of the supporting capacitor meets a preset condition comprises:
when the voltage value of the supporting capacitor is larger than or equal to a preset pressure value, a pulse control signal is sent to a switch device of the rectifier to control the on-off of the switch device, and three-phase alternating current is provided for the asynchronous motor.
7. The method of claim 5, further comprising:
and when the current rotating speed is greater than or equal to a second preset rotating speed, controlling the charging device to be disconnected from the rectifier and controlling the rectifier to output direct current.
8. A controller, comprising:
the acquisition module is used for acquiring the current rotating speed of the diesel engine;
the execution module is used for controlling a charging device to charge a support capacitor of the rectifier when the current rotating speed is lower than a first preset rotating speed;
the execution module is further used for controlling the rectifier to provide three-phase alternating current for the asynchronous motor when the voltage value of the supporting capacitor meets a preset condition, so that the asynchronous motor works under the working condition of the motor to drive the diesel engine to work.
9. A controller, comprising:
a memory;
a processor; and
a computer program;
wherein the computer program is stored in the memory and configured to be executed by the processor to implement the method of any one of claims 5-7.
10. A computer-readable storage medium, having stored thereon a computer program for execution by a processor to perform the method of any one of claims 5-7.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1530536A (en) * | 2003-03-13 | 2004-09-22 | 本田技研工业株式会社 | engine generator |
| CN102790586A (en) * | 2011-05-17 | 2012-11-21 | 本田技研工业株式会社 | Inverter generator |
| JP2013092097A (en) * | 2011-10-25 | 2013-05-16 | Denso Corp | Control device for starter generator |
| CN104712485A (en) * | 2013-12-17 | 2015-06-17 | 北车大连电力牵引研发中心有限公司 | Diesel engine starter and diesel generating set |
| CN106677949A (en) * | 2017-03-17 | 2017-05-17 | 苏州市双马机电有限公司 | Starting device and method for digital power generator electrically started in reverse dragging manner |
| CN108105007A (en) * | 2017-11-27 | 2018-06-01 | 合肥凯利科技投资有限公司 | Internal combustion engine start power generator based on three-phase motor with permanent magnets |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1466779A3 (en) * | 2003-04-10 | 2006-09-06 | Hitachi, Ltd. | Motor control device |
-
2018
- 2018-09-29 CN CN201811151748.6A patent/CN110966129B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1530536A (en) * | 2003-03-13 | 2004-09-22 | 本田技研工业株式会社 | engine generator |
| CN102790586A (en) * | 2011-05-17 | 2012-11-21 | 本田技研工业株式会社 | Inverter generator |
| JP2013092097A (en) * | 2011-10-25 | 2013-05-16 | Denso Corp | Control device for starter generator |
| CN104712485A (en) * | 2013-12-17 | 2015-06-17 | 北车大连电力牵引研发中心有限公司 | Diesel engine starter and diesel generating set |
| CN106677949A (en) * | 2017-03-17 | 2017-05-17 | 苏州市双马机电有限公司 | Starting device and method for digital power generator electrically started in reverse dragging manner |
| CN108105007A (en) * | 2017-11-27 | 2018-06-01 | 合肥凯利科技投资有限公司 | Internal combustion engine start power generator based on three-phase motor with permanent magnets |
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