A control system, method, and generator set for preventing generator set shutdown and blasting.

Abstract

This invention discloses a control system, method, and generator set for preventing generator set shutdown and backfiring. The system includes an ignition signal detection module, a fuel supply solenoid valve, an excitation voltage regulation module, and a main control module. The ignition signal detection module, fuel supply solenoid valve, and excitation voltage regulation module are all connected to the main control module. The ignition signal detection module detects the engine's ignition signal. The main control module outputs corresponding control commands based on the ignition signal to control the energization state of the fuel supply solenoid valve and the excitation voltage regulation module. The fuel supply solenoid valve is installed on the engine's fuel supply line and is used to disconnect or connect the fuel supply line according to the control commands of the main control module. The excitation voltage regulation module is connected to the generator and is used to connect or disconnect the generator's output according to the control commands of the main control module. This invention can prevent backfiring when the generator set's engine abnormally shuts down.

Description

Technical Field

[0001] This invention relates to the field of generator set technology, and in particular to a control system, method, and generator set for preventing generator set from shutting down and blasting. Background Technology

[0002] A generator set is a complete set of mechanical equipment that converts other forms of energy into electrical energy. Currently, generator sets using fuel engines as their power source mainly provide temporary power for hospitals, hotels, homes, urban construction, environmental protection, and other fields.

[0003] Fuel engines can be categorized into those that use only fuel (such as gasoline or diesel), those that use only natural gas (such as liquefied petroleum gas (LPG) or natural gas (NG), and multi-fuel engines that use both fuel and natural gas. Multi-fuel engines typically use a fuel selection switch to switch between the various fuels they use.

[0004] A generator set that uses a fuel engine as its power source mainly consists of an engine, a generator, and a power output module. The engine is driven by the generator through a crankshaft, and the generator's power output terminal is connected to the power input terminal of the power output module. The engine drives the generator to rotate through the crankshaft, causing the generator to generate electricity. The power output module converts the electricity output by the generator into the voltage required by the load to supply power to the load.

[0005] Generator sets that use fuel engines as power sources often experience abnormal engine shutdowns, such as shutdown due to CO alarm, shutdown due to lack of oil, or shutdown due to human error while under load.

[0006] When the engine is turned off, the spark plugs in the engine cylinders immediately stop igniting. However, the crankshaft and flywheel assembly continue to rotate due to inertia, decelerating under the influence of the remaining gas resistance torque and frictional torque until the pistons gradually come to a complete stop. During this process, the air-fuel mixture drawn into the engine remains unburned. The excess combustible mixture is discharged with the exhaust gas into the exhaust pipe. Upon encountering sparks or overheated exhaust gas in the exhaust pipe, it can ignite and produce a popping sound, causing flames to shoot out of the muffler exhaust port. This poses a significant safety hazard and, in severe cases, can damage the muffler.

[0007] Therefore, how to prevent backfiring (deflagration) when the generator set engine shuts down abnormally is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0008] The purpose of this invention is to provide a control system, method, and generator set for preventing backfire when the generator engine shuts down abnormally.

[0009] To achieve the above-mentioned objectives of the present invention, according to a first aspect of the present invention, a control system for preventing generator set shutdown and backfiring is provided. The generator set includes an engine, a generator, and a power output module. The engine is driven and connected to the generator, and the generator is connected to the power output module. The power output module is used to connect to an electrical load and supply power to the electrical load. The control system includes:

[0010] The system includes an ignition signal detection module, a fuel supply solenoid valve, an excitation voltage regulation module, and a main control module. The ignition signal detection module, fuel supply solenoid valve, and excitation voltage regulation module are each connected to the main control module.

[0011] The ignition signal detection module is used to detect the ignition signal of the engine and send the detected ignition signal to the main control module.

[0012] The main control module is used to receive the ignition signal and output corresponding control commands according to the ignition signal to control the power-on state of the fuel supply solenoid valve and the excitation voltage regulation module.

[0013] The fuel supply solenoid valve is installed on the fuel supply line of the engine, and the fuel supply solenoid valve is used to disconnect or connect the fuel supply line according to the control command of the main control module.

[0014] The excitation voltage regulation module is connected to the generator and is used to turn the generator output on or off according to the control command of the main control module.

[0015] Preferably, the main control module includes an ignition signal sampling circuit, a fuel solenoid valve switch, an excitation control switch, and an MCU controller, wherein,

[0016] The ignition signal detection module is connected to the ignition signal sampling circuit, the fuel supply solenoid valve is connected to the fuel solenoid valve switch, the excitation voltage regulation module is connected to the excitation control switch, and the ignition signal sampling circuit, the fuel solenoid valve switch, and the magnetic control switch are respectively connected to the MCU controller.

[0017] Preferably, the engine is a multi-fuel engine.

[0018] Preferably, the control system further includes a fuel selection switch.

[0019] Accordingly, the main control module also includes a fuel identification circuit connected to the MCU controller, and the fuel selection switch is connected to the fuel identification circuit.

[0020] Preferably, the fuel supply solenoid valve includes a gas solenoid valve and a fuel solenoid valve.

[0021] Accordingly, the fuel solenoid valve switch includes a gas solenoid valve switch and a fuel solenoid valve switch.

[0022] in,

[0023] The gas solenoid valve is installed on the gas supply line of the engine, and the gas solenoid valve is connected to the gas solenoid valve switch.

[0024] The fuel solenoid valve is installed on the fuel supply line of the engine, and the fuel solenoid valve is connected to the fuel solenoid valve switch.

[0025] Preferably, the main control module is further configured to output corresponding control commands based on the on / off state of the fuel selection switch to control the energization state of the fuel supply solenoid valve.

[0026] Preferably, the excitation voltage regulation module is an automatic voltage regulator (AVR).

[0027] According to a second aspect of the present invention, a generator set is provided, including the control system for preventing generator set shutdown and blasting as described in any of the first aspects above.

[0028] According to a third aspect of the present invention, the present invention provides a control method for preventing generator set shutdown and backfiring, applied to the control system for preventing generator set shutdown and backfiring as described in any of the first aspects above, the control method comprising the following steps:

[0029] S1, During engine operation, the ignition signal of the engine is detected in real time by the ignition signal detection module;

[0030] S2, the main control module determines whether an abnormal engine shutdown event has occurred based on the engine's ignition signal;

[0031] S3, when an abnormal engine shutdown event occurs, the main control module controls the fuel supply solenoid valve on the fuel supply pipeline that currently supplies fuel to the engine to close, thereby cutting off the fuel input to the engine. At the same time, the main control module controls the excitation voltage regulation module to de-energize, thereby disconnecting the output of the generator.

[0032] Preferably, determining whether an abnormal engine shutdown event has occurred based on the engine's ignition signal includes:

[0033] S21, start timing from the moment the current ignition pulse signal is detected;

[0034] S22, if no next ignition pulse signal is detected after the preset time has elapsed, an abnormal engine shutdown event is determined to have occurred.

[0035] As can be seen from the above technical solution, the present invention provides a control system to prevent generator set engine shutdown and backfiring. The system detects the engine's ignition signal through an ignition signal detection module and outputs corresponding control commands through a main control module to control the energization status of the fuel supply solenoid valve and the excitation voltage regulation module based on the ignition signal. Thus, when the generator set's engine experiences abnormal shutdown, the main control module controls the fuel supply solenoid valve to cut off the fuel supply and controls the excitation voltage regulation module to disconnect the generator output. This ensures that, on the one hand, no excess fuel passes through the carburetor and combustion chamber into the muffler when the engine is not ignited; on the other hand, disconnecting the generator output after no ignition prevents the engine from carrying an electrical load, thereby increasing the duration of the engine's rotation due to flywheel inertia. This allows for more complete expulsion of excess combustible mixture from the muffler, effectively preventing backfiring when the generator set's engine experiences abnormal shutdown.

[0036] The control method for preventing generator set shutdown and backfiring of the present invention and the generator set have the same technical effects as the control system for preventing generator set shutdown and backfiring described above, and will not be repeated here.

[0037] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0038] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0039] The above-mentioned additional aspects and / or advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, wherein:

[0040] Figure 1 This is a block diagram of the control system for preventing generator set shutdown and blasting in a preferred embodiment of the present invention.

[0041] Figure 2 This is a schematic diagram of the generator set in a preferred embodiment of the present invention;

[0042] Figure 3 This is a flowchart of a control method for preventing generator set shutdown and blasting in a preferred embodiment of the present invention. Detailed Implementation

[0043] 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.

[0044] like Figure 1 As shown, this embodiment of the invention provides a control system to prevent generator set from shutting down and blasting. The generator set includes an engine 100, a generator 200 and a power output module 300. The engine 100 is driven to the generator 200, and the generator 200 is connected to the power output module 300. The power output module 300 is used to connect to the electrical load 400 and supply power to the electrical load 400.

[0045] The control system includes:

[0046] The system comprises an ignition signal detection module 1, a fuel supply solenoid valve 2, an excitation voltage regulation module 3, and a main control module 4. The ignition signal detection module 1, fuel supply solenoid valve 2, and excitation voltage regulation module 3 are all connected to the main control module 4.

[0047] Ignition signal detection module 1 is used to detect the ignition signal of engine 100 and send the detected ignition signal to main control module 4;

[0048] The main control module 4 is used to receive the ignition signal and output corresponding control commands according to the ignition signal to control the energization status of the fuel supply solenoid valve 2 and the excitation voltage regulation module 3.

[0049] Fuel supply solenoid valve 2 is installed on the fuel supply line of engine 100. Fuel supply solenoid valve 2 is used to disconnect or connect the fuel supply line according to the control command of main control module 4.

[0050] The excitation voltage regulation module 3 is connected to the generator 200. The excitation voltage regulation module 3 is used to turn on or off the output of the generator 200 according to the control command of the main control module 4.

[0051] The working principle of the control system for preventing generator set shutdown and blasting in this invention is as follows:

[0052] During the operation of the generator set, the ignition signal detection module 1 detects the ignition signal of the engine 100, and the main control module 4 outputs corresponding control commands based on the ignition signal to control the energization status of the fuel supply solenoid valve 2 and the excitation voltage regulation module 3. Thus, when the engine 100 of the generator set experiences abnormal shutdown, the main control module 4 controls the fuel supply solenoid valve 2 to cut off the fuel supply, and the main control module 4 controls the excitation voltage regulation module 3 to disconnect the generator 200 output.

[0053] In summary, this embodiment provides a control system to prevent generator set shutdown and backfiring. It can detect the ignition signal of engine 100 during generator set operation and determine whether the generator set has abnormally shut down based on the detected ignition signal. When engine 100 of the generator set abnormally shuts down, it promptly and quickly cuts off the fuel supply and disconnects the output of generator 200. This ensures that, on the one hand, no excess fuel enters the muffler through the carburetor and combustion chamber when engine 100 is not ignited; on the other hand, by disconnecting the output of generator 200 after no ignition, engine 100 is no longer carrying the electrical load 400, thereby increasing the duration of engine 100's rotation due to flywheel inertia. This allows for more complete exhaust of excess combustible mixture from the muffler, ultimately effectively preventing backfiring when generator set engine 100 abnormally shuts down.

[0054] Based on the above embodiments, in one embodiment, the main control module 4 includes an ignition signal sampling circuit 41, a fuel solenoid valve switch 42, an excitation control switch 43, and an MCU controller 44, wherein,

[0055] Ignition signal detection module 1 is connected to ignition signal sampling circuit 41, fuel supply solenoid valve 2 is connected to fuel solenoid valve switch 42, excitation voltage regulation module 3 is connected to excitation control switch 43, and ignition signal sampling circuit 41, fuel solenoid valve switch 42 and excitation control switch are respectively connected to MCU controller 44.

[0056] During the operation of the generator set, the ignition signal of the engine 100 detected by the ignition signal detection module 1 is collected in real time or according to a preset sampling frequency by the ignition signal sampling circuit 41 and sent to the MCU controller 44. The MCU controller 44 determines whether the engine 100 has abnormally shut down based on the received ignition signal. When the engine 100 abnormally shuts down, the MCU controller 44 controls the fuel supply solenoid valve 2 to disconnect the fuel supply pipeline through the fuel solenoid valve switch 42, thereby cutting off the fuel supply to the engine 100. It also disconnects the excitation voltage regulation module 3 from the generator 200 through the excitation control switch 43, so that the generator 200 has no excitation input and no voltage output, thereby disconnecting the external load 400 of the generator set.

[0057] The control system for preventing generator set shutdown and backfiring of this application is applicable to single-fuel engines that use only fuel oil or natural gas, as well as multi-fuel engines that use both fuel oil and natural gas simultaneously. In one embodiment, engine 100 is a multi-fuel engine.

[0058] Based on the above embodiments, in one embodiment, the control system further includes a fuel selection switch 5.

[0059] Correspondingly, the main control module 4 also includes a fuel identification circuit 45 connected to the MCU controller 44, and the fuel selection switch 5 is connected to the fuel identification circuit 45; the main control module 4 is also used to output corresponding control commands to control the energization state of the fuel supply solenoid valve 2 according to the on / off state of the fuel selection switch 5.

[0060] In this embodiment, for a generator set that uses a multi-fuel engine as its power source, a fuel selection switch 5 and a fuel identification circuit 45 are provided. The fuel identification circuit 45 identifies the type of fuel currently in use based on the current state of the fuel selection switch 5. The MCU controller 44 of the main control module 4 outputs corresponding control commands based on the on / off state of the fuel selection switch 5 (different on / off states of the fuel selection switch 5 correspond to different types of fuel currently in use) to control the energization state of the corresponding fuel supply solenoid valve 2.

[0061] Based on the above embodiments, in one embodiment, the fuel supply solenoid valve 2 includes a gas solenoid valve 21 and a fuel solenoid valve 22.

[0062] Accordingly, the fuel solenoid valve switch 42 includes a gas solenoid valve switch 421 and a fuel solenoid valve switch 422.

[0063] in,

[0064] The gas solenoid valve 21 is installed on the gas supply line of the engine 100, and the gas solenoid valve 21 is connected to the gas solenoid valve switch 421.

[0065] The fuel solenoid valve 22 is installed on the fuel supply line of the engine 100 and is connected to the fuel solenoid valve switch 422.

[0066] Specifically, in this embodiment, the excitation voltage regulation module 3 is an automatic voltage regulator (AVR).

[0067] When the fuel selection switch 5 selects fuel, the main control module 4 recognizes the fuel status and starts operation. It controls the fuel solenoid valve switch 422 and the gas solenoid valve switch 421, causing the fuel solenoid valve 22 to open and the gas solenoid valve 21 to close, ensuring that fuel can enter the carburetor for combustion. After successful start-up, the main control module 4 samples the ignition signal of the engine 100 detected by the ignition signal detection module 1 in real time through the ignition signal sampling circuit 41. If the ignition signal of the engine 100 is not detected within a preset time, the main control module 4 immediately controls the fuel solenoid valve switch 422 to close, cutting off the fuel input. At the same time, the control module connects the excitation control switch 43, causing the automatic voltage regulator (AVR) to disconnect the excitation. Since the generator 200 has no excitation input, the generator 200 has no voltage output, and the external load 400 is disconnected. At this time, the rotational load of engine 100 is reduced. Due to the rotational inertia of the flywheel, engine 100 drives the piston to move. The rotation of the piston drives the air through the carburetor and combustion chamber and then into the muffler to dilute and discharge the unburned combustible mixture. This avoids damage to the muffler or external flames caused by the combustible mixture in the muffler cavity and the high temperature after the engine 100 stops ignition.

[0068] When the fuel selection switch 5 selects natural gas, the main control module 4 recognizes this as a natural gas setting and starts operation. Before the generator set starts, the main control module 4 does not control the fuel solenoid valve 22 (normally open) and the natural gas solenoid valve 21 (normally closed) to prevent rapid battery depletion due to prolonged inactivity after selecting the natural gas setting. Only after detecting an engine start signal or when the engine speed exceeds a certain threshold will the main control module 4 control the fuel solenoid valve switch 422 and the natural gas solenoid valve switch 421, closing the fuel solenoid valve 22 and opening the natural gas solenoid valve 21 to ensure natural gas supply. After successful start-up, the main control module 4 samples the ignition signal of the engine 100 detected by the ignition signal detection module 1 in real time through the ignition signal sampling circuit 41. If the ignition signal of the engine 100 is not detected within a preset time, the main control module 4 immediately controls the gas solenoid valve switch 421 to close, causing the gas solenoid valve 21 to cut off the gas input. At the same time, the control module connects the excitation control switch 43, causing the automatic voltage regulator (AVR) to disconnect the excitation. Since the generator 200 has no excitation input, the generator 200 has no voltage output, and the external load 400 is disconnected. At this time, the rotational load of the engine 100 is reduced. Due to the rotational inertia of the flywheel, the piston of the engine 100 moves. The rotation of the piston drives the air through the carburetor and combustion chamber and then into the muffler to dilute and discharge the unburned combustible mixture. This avoids damage to the muffler or external flames caused by the combustible mixture in the muffler cavity deflagrizing at high temperatures after the engine 100 stops.

[0069] Based on the above embodiments, in one embodiment, the gas solenoid valve switch 421, the fuel solenoid valve switch 422, and the excitation control switch 43 all use MOSFETs.

[0070] like Figure 2 As shown, this embodiment of the invention also provides a generator set, including an engine 100, a generator 200 and a power output module 300. The engine 100 is driven to the generator 200, the generator 200 is connected to the power output module 300, and the power output module 300 is used to connect to the electrical load 400 to supply power to the electrical load 400. It also includes a control system for preventing the generator set from shutting down and blasting, as described in any of the above embodiments.

[0071] The working principle and beneficial effects of the generator set in this embodiment are the same as those of the control system for preventing generator set shutdown and backfiring in the above embodiments, and will not be repeated here.

[0072] like Figure 3 As shown, this embodiment of the invention also provides a control method for preventing generator set shutdown and blasting. This control method is applied to the control system for preventing generator set shutdown and blasting in any of the above embodiments. The control method includes the following steps:

[0073] S1, during engine operation, the ignition signal detection module detects the engine's ignition signal in real time.

[0074] S2, the main control module determines whether an abnormal engine shutdown event has occurred based on the engine's ignition signal;

[0075] S3, when an abnormal engine shutdown event occurs, the main control module controls the fuel supply solenoid valve on the fuel supply pipeline that is currently supplying fuel to the engine to close, thereby cutting off the fuel input to the engine. At the same time, the main control module controls the excitation voltage regulation module to de-energize, thereby disconnecting the generator output.

[0076] The working principle and beneficial effects of the control method for preventing generator set shutdown and blasting in this embodiment are the same as those of the control system for preventing generator set shutdown and blasting in the above embodiment, and will not be repeated here.

[0077] Based on the above embodiments, in one embodiment, step S2, determining whether an abnormal engine shutdown event has occurred based on the engine ignition signal, includes:

[0078] S21, start timing from the moment the current ignition pulse signal is detected;

[0079] S22, if no next ignition pulse signal is detected after the preset time has elapsed, an abnormal engine shutdown event is determined to have occurred.

[0080] It should be noted that the preset duration is at least longer than the time interval between two adjacent ignition pulses under normal ignition conditions at rated speed (i.e., one ignition cycle). The specific value of the preset duration is set according to the engine ignition cycle and specific needs. For engines with the same ignition cycle, the shorter the preset duration, the more sensitive the abnormal shutdown detection, thus allowing the strategy of the generator set anti-shutdown and backfiring control method to intervene more quickly in the event of abnormal shutdown, thereby achieving a better anti-shutdown and backfiring effect.

[0081] During engine operation, when the speed exceeds the rated speed or the engine runs away, the engine speed is usually actively controlled to slow down by skipping ignition. During skipping ignition, the time interval between two adjacent ignition pulses of the engine will be 2 to 3 times the normal ignition cycle. Therefore, in order to avoid the strategy of preventing generator set shutdown and backfiring control method from intervening in the case of skipping ignition due to the preset duration being too short, in this embodiment, the preset duration is 3 to 5 normal ignition cycles.

[0082] Since the time interval between two adjacent ignition pulses varies with engine speed, and the engine will activate a skip ignition strategy when the engine speed exceeds the rated speed by a certain percentage (e.g., 20% above the rated speed), in some other embodiments, the preset duration can be dynamically adjusted according to the current engine speed. The preset duration is relatively longer when the engine speed is higher and relatively shorter when the engine speed is lower. This allows the main control module to respond more quickly to abnormal engine shutdown when the engine speed is low (and the time interval between two adjacent ignition pulses is relatively short), enabling the strategy of the generator set anti-shutdown and backfiring control method of this application to intervene as soon as possible. Preferably, the preset duration is 3 to 5 times the ignition cycle corresponding to the current engine speed.

[0083] In the embodiments provided in this application, it should be understood that the disclosed methods and systems can be implemented in other ways. The system embodiments described above are merely illustrative. For example, the division of modules is only a logical functional division, and in actual implementation, there may be other division methods, such as: multiple modules or components can be combined, or integrated into another system, or some features can be ignored or not executed. In addition, the coupling, direct coupling, or communication connection between the various components shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or modules, and can be electrical, mechanical, or other forms.

[0084] Furthermore, in the various embodiments of the present invention, each functional module can be fully integrated into a processor, or each module can be a separate device, or two or more modules can be integrated into a device; each functional module in the various embodiments of the present invention can be implemented in hardware or in the form of hardware plus software functional units.

[0085] Those skilled in the art will understand that all or part of the steps of the above method embodiments can be implemented by program instructions and related hardware. The aforementioned program instructions can be stored in a computer-readable storage medium. When the program instructions are executed, they perform the steps of the above method embodiments. The aforementioned storage medium includes various media that can store program code, such as mobile storage devices, read-only memory (ROM), magnetic disks, or optical disks.

[0086] It should be understood that the use of terms such as "system," "device," "unit," and / or "module" in this application is merely one method of distinguishing different components, elements, parts, sections, or assemblies at different levels. However, if other terms can achieve the same purpose, they may be replaced by other expressions.

[0087] As indicated in this application and claims, unless the context clearly indicates otherwise, the words "a," "an," "a," and / or "the" are not specifically singular and may include the plural. Generally, the terms "comprising" and "including" only indicate the inclusion of expressly identified steps and elements, which do not constitute an exclusive list, and the method or apparatus may also include other steps or elements. An element defined by the phrase "comprising an..." does not exclude the presence of other identical elements in the process, method, product, or apparatus that includes the element.

[0088] In the description of the embodiments of this application, unless otherwise stated, " / " means "or", for example, A / B can mean A or B; "and / or" in this document is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Furthermore, in the description of the embodiments of this application, "multiple" refers to two or more.

[0089] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0090] If a flowchart is used in this application, it is used to illustrate the operations performed by the system according to embodiments of this application. It should be understood that the preceding or following operations are not necessarily performed in exact order. Instead, the steps can be processed in reverse order or simultaneously. Furthermore, other operations can be added to these processes, or one or more steps can be removed from them.

[0091] The foregoing has provided a detailed description of a control system, method, and generator set for preventing generator set shutdown and backfiring, as provided by the present invention. The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A control system for preventing generator set from shutting down and blasting, the generator set comprising an engine, a generator, and a power output module, the engine being driven and connected to the generator, the generator being connected to the power output module, the power output module being used to connect to an electrical load and supply power to the electrical load, characterized in that, The control system includes: The system includes an ignition signal detection module, a fuel supply solenoid valve, an excitation voltage regulation module, and a main control module. The ignition signal detection module, fuel supply solenoid valve, and excitation voltage regulation module are each connected to the main control module. The ignition signal detection module is used to detect the ignition signal of the engine and send the detected ignition signal to the main control module. The main control module is used to receive the ignition signal and output corresponding control commands according to the ignition signal to control the power-on state of the fuel supply solenoid valve and the excitation voltage regulation module. The fuel supply solenoid valve is installed on the fuel supply line of the engine, and the fuel supply solenoid valve is used to disconnect or connect the fuel supply line according to the control command of the main control module. The excitation voltage regulation module is connected to the generator and is used to turn the generator output on or off according to the control command of the main control module.

2. The control system for preventing generator set shutdown and blasting according to claim 1, characterized in that, The main control module includes an ignition signal sampling circuit, a fuel solenoid valve switch, an excitation control switch, and an MCU controller. The ignition signal detection module is connected to the ignition signal sampling circuit, the fuel supply solenoid valve is connected to the fuel solenoid valve switch, the excitation voltage regulation module is connected to the excitation control switch, and the ignition signal sampling circuit, the fuel solenoid valve switch, and the magnetic control switch are respectively connected to the MCU controller.

3. The control system for preventing generator set shutdown and blasting according to claim 2, characterized in that, The engine is a multi-fuel engine.

4. The control system for preventing generator set shutdown and blasting according to claim 3, characterized in that, It also includes a fuel selection switch, Accordingly, the main control module also includes a fuel identification circuit connected to the MCU controller, and the fuel selection switch is connected to the fuel identification circuit.

5. The control system for preventing generator set shutdown and blasting according to claim 3, characterized in that, The fuel supply solenoid valve includes a gas solenoid valve and a fuel solenoid valve. Accordingly, the fuel solenoid valve switch includes a gas solenoid valve switch and a fuel solenoid valve switch. in, The gas solenoid valve is installed on the gas supply line of the engine, and the gas solenoid valve is connected to the gas solenoid valve switch. The fuel solenoid valve is installed on the fuel supply line of the engine, and the fuel solenoid valve is connected to the fuel solenoid valve switch.

6. The control system for preventing generator set shutdown and blasting according to claim 4, characterized in that, The main control module is also used to output corresponding control commands based on the on / off state of the fuel selection switch to control the energization state of the fuel supply solenoid valve.

7. The control system for preventing generator set shutdown and blasting according to any one of claims 1-6, characterized in that, The excitation voltage regulation module is an automatic voltage regulator (AVR).

8. A generator set, characterized in that, The control system for preventing generator set shutdown and blasting as described in any one of claims 1-7.

9. A control method for preventing generator set shutdown and blasting, characterized in that, The control system for preventing generator set shutdown and blasting as described in any one of claims 1-7, the control method comprising the following steps: S1, During engine operation, the ignition signal of the engine is detected in real time by the ignition signal detection module; S2, the main control module determines whether an abnormal engine shutdown event has occurred based on the engine's ignition signal; S3, when an abnormal engine shutdown event occurs, the main control module controls the fuel supply solenoid valve on the fuel supply pipeline that currently supplies fuel to the engine to close, thereby cutting off the fuel input to the engine. At the same time, the main control module controls the excitation voltage regulation module to de-energize, thereby disconnecting the output of the generator.

10. The control method for preventing generator set shutdown and blasting according to claim 9, characterized in that, The step of determining whether an abnormal engine shutdown event has occurred based on the engine's ignition signal includes: S21, start timing from the moment the current ignition pulse signal is detected; S22, if no next ignition pulse signal is detected after the preset time has elapsed, an abnormal engine shutdown event is determined to have occurred.

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