Generator starting control system

Abstract

The utility model relates to the technical field of generator control, and relates to a generator start control system, a generator comprises a first engine and a first motor, and further comprises a storage battery, and a generator control module and an inversion module which are connected with the storage battery; the storage battery is used for supplying power to the generator control module; the generator control module is used for starting a first engine through a first motor after being electrified; the first engine is used for driving the first motor to rotate; the first motor is used for starting the first engine or outputting alternating current; the inverse module is used for converting the direct current into the alternating current or converting the alternating current into the direct current. When the generator is started, the storage battery supplies power to the first motor through the motor control module, and the first generator is started by the first motor; the first generator is started through electric energy, the problems of high oil consumption and much pollution in the starting process of an automobile generator system can be solved, and the generator starting cost is reduced.

Description

Technical Field

[0001] This application relates to the field of generator control technology, and in particular to a generator starting control system. Background Technology

[0002] Electric vehicles typically use a generator as their primary power source. The generator's output can directly power the vehicle's powertrain, lighting, air conditioning, and other electrical equipment, or it can charge the battery, which then powers the aforementioned equipment. In recent years, electric vehicle technology has developed rapidly. Existing high-speed electric vehicles often use high-voltage batteries (with an operating voltage of 200 volts or higher) to store energy, achieving long driving ranges and fast charging capabilities. This places higher demands on the generator system.

[0003] A generator consists of an engine and a motor. In current technology, the engine is usually started by fuel, and the engine drives the generator rotor to generate electricity. High-voltage batteries are usually used in conjunction with high-voltage motors and high-speed engines. Starting a high-speed engine with fuel consumes a large amount of fuel, resulting in high power generation costs. In addition, the combustion of fuel in a short period of time produces a large amount of harmful gases, so improvements are needed. Utility Model Content

[0004] To address the issues of high fuel consumption and pollution during the startup of automotive generator systems, this application provides a generator startup control system.

[0005] The generator starting control system provided in this application includes a generator, a battery, and a generator control module and an inverter module connected to the battery;

[0006] The generator includes a first engine and a first motor; the first engine is used to drive the first motor to rotate, and the first motor is used to start the first engine or output alternating current.

[0007] The battery is used to power the generator control module;

[0008] The generator control module is used to start the first engine via the first motor after power is supplied;

[0009] The alternating current output from the first motor is converted into direct current through the generator control module;

[0010] The inverter module is connected to the generator control module. The inverter module is used to convert DC power into AC power or AC power into DC power.

[0011] Optionally, the inverter module includes a DC-DC conversion unit and a bidirectional inverter conversion unit connected to the generator control module.

[0012] The DC-DC converter unit is bidirectionally connected to the battery. It converts the input voltage to a preset voltage specification.

[0013] The bidirectional inverter conversion unit is used to convert the DC power input to the bidirectional inverter conversion unit into AC power or to convert the AC power input into DC power.

[0014] Optionally, the generator control module includes a reverse-rotation unit and an engine power supply unit.

[0015] The input terminal of the reverse-rotating unit is connected to the output terminal of the battery through a DC-DC conversion unit, and the output terminal of the reverse-rotating unit is connected to the input terminal of the first motor. The reverse-rotating unit is used to convert DC power into AC power.

[0016] The input terminal of the engine power supply unit is connected to the output terminal of the battery, and the output terminal of the engine power supply unit is connected to the input terminal of the first engine. The engine power supply unit is used to supply power to the starting module / operating module of the first engine.

[0017] Optionally, the generator control module also includes a rectifier unit;

[0018] The input terminal of the rectifier unit is connected to the output terminal of the first motor, and the output terminal of the rectifier unit is connected to the input terminal of the bidirectional inverter conversion unit.

[0019] The system's output circuits include a first output circuit, a second output circuit, a third output circuit, a fourth output circuit, and a fifth output circuit.

[0020] The first output circuit includes a storage battery, an engine power supply unit, and a first engine connected in sequence.

[0021] The second output circuit includes a battery, a DC-DC converter, a reverse support unit, and a first motor connected in sequence.

[0022] The third output circuit includes a first motor, a rectifier unit, and a bidirectional inverter unit connected in sequence.

[0023] The fourth output circuit includes a first motor, a rectifier unit, a DC-DC converter unit, and a battery connected in sequence;

[0024] The fifth output circuit includes an AC power grid, a bidirectional inverter conversion unit, a DC-DC conversion unit, and a battery connected in sequence.

[0025] Optionally, the rectifier unit includes three parallel rectifier circuits, each of which is configured to correspond one-to-one with the three-phase output terminals of the first motor.

[0026] Each rectifier circuit includes a series-connected thyristor and diode. The phase line corresponding to each rectifier circuit in the three-phase output terminal of the first motor is connected to the anode of the thyristor and the cathode of the diode, respectively. The anode of the thyristor is connected to the cathode of the diode. The cathode of the thyristor is connected to the positive terminal of the bus, and the positive terminal of the diode is connected to the negative terminal of the bus. The control electrode of the thyristor is connected to a control signal source.

[0027] Optionally, the rectifier unit also includes a filter capacitor connected in parallel with the three rectifier circuits, wherein the cathode of the thyristor in the rectifier circuit is connected to the positive terminal of the filter capacitor, and the positive terminal of the diode is connected to the negative terminal of the filter capacitor.

[0028] Optionally, the anti-reverse unit includes three parallel first control loops, the outputs of which are respectively connected to the three-phase inputs of the first motor; the first control loop includes a first MOSFET and a second MOSFET connected in series.

[0029] The drain of the first MOSFET is connected to one terminal of the battery, the source of the second MOSFET is connected to the other terminal of the battery, and the drain of the second MOSFET is connected to the source of the first MOSFET. The gate of the first MOSFET is used to receive a first control signal, and the gate of the second MOSFET is used to receive a second control signal.

[0030] Optionally, the generator control module includes an engine power supply unit and a motor drive unit.

[0031] The engine power supply unit is used to supply power to the starting module / operating module of the first engine.

[0032] The current-mode conversion unit has a first conversion mode and a second conversion mode;

[0033] In the first conversion mode, the current mode conversion unit is used to convert the AC power output by the first engine into DC power of a preset specification.

[0034] In the second conversion mode, the current mode conversion unit is used to convert the DC power output from the battery into AC power that can be used to drive the first motor.

[0035] The system's output circuits include the sixth, seventh, eighth, ninth, tenth, and eleventh output circuits.

[0036] The sixth output circuit includes a battery, a DC-DC converter, a current mode converter, and a first motor connected in sequence;

[0037] The seventh output circuit includes a battery, an engine power supply unit, and a first engine connected in sequence;

[0038] The eighth output circuit includes a first motor, a current mode conversion unit, and a bidirectional inverter conversion unit connected in sequence;

[0039] The ninth output circuit includes a first motor, a current mode conversion unit, a DC-DC conversion unit, and a battery connected in sequence;

[0040] The tenth output circuit includes a first motor, a current mode conversion unit, an engine power supply unit, and a first engine connected in sequence;

[0041] The eleventh output circuit includes an AC power grid, a bidirectional inverter conversion unit, a DC-DC conversion unit, and a battery connected in sequence.

[0042] Optionally, the current-mode conversion unit includes three parallel second control loops, each corresponding to one of the three phase input terminals of the first engine. One end of each second control loop is connected to the positive terminal of the battery, and the other end is connected to the negative terminal of the battery. Each second control loop includes a third MOSFET and a fourth MOSFET connected in reverse series. The source of the third MOSFET is connected to one end of the battery, the source of the fourth MOSFET is connected to the drain of the third MOSFET, and the drain of the fourth MOSFET is connected to the other end of the battery. The input terminal of the first engine is connected between the source of the fourth MOSFET and the drain of the third MOSFET. The drain of the fourth MOSFET is used to connect to the input terminal of the DC-DC conversion unit. The gate of the third MOSFET is used to receive a third control signal, and the gate of the fourth MOSFET is used to receive a fourth control signal.

[0043] Optionally, it also includes a main control module. The battery, generator control module and inverter module are all connected to the main control module. The main control module is connected to a button module and a display module. The button module is used to send control commands, and the display module is used to display the generator's operating information.

[0044] Optionally, the system further includes an MPPT module, which is connected to the battery. The MPPT module is used to receive electrical energy output from an external power generation system, and its output terminal can be connected to a DC load.

[0045] In summary, this application includes the following beneficial technical effects:

[0046] After the battery powers the generator control module, the module converts DC power to AC power to supply the first motor. When the first motor is powered on, the coils on its stator generate a magnetic field, driving the rotor to rotate around its own axis, converting electrical energy into mechanical energy. At this time, the first motor operates as a motor, and its shaft drives the shaft of the first engine to rotate synchronously. The rotating shaft of the first engine drives the flywheel of the first engine to rotate. The flywheel stores energy during rotation, and when its speed reaches a preset value, it can automatically drive the shaft of the first engine to rotate, starting the first engine. After the first engine starts, the battery is turned off. At this point, the first engine drives the rotor of the first motor to generate electricity. Compared to fuel, electricity is a clean energy source and does not emit large amounts of harmful gases during use. Starting the first engine with battery power reduces the problems of high fuel consumption and pollution during the startup of the car's generator system.

[0047] The first input terminal of the inverter module is connected to the generator control module, and the first output terminal of the inverter module can be used to power AC electrical equipment by using the electrical energy output by the first motor to power AC electrical equipment; the second input terminal of the inverter module is connected to the AC power grid, and the second output terminal of the inverter module is connected to the battery, so that the system can charge the battery through the AC power grid. Attached Figure Description

[0048] Figure 1 A flowchart illustrating the generator starting control system provided in Example 1;

[0049] Figure 2 A circuit diagram of the generator starting control system provided in Example 1;

[0050] Figure 3 This is a flowchart illustrating the generator starting control system provided in Example 2.

[0051] Figure 4 The circuit diagram of the generator starting control system provided in Example 2.

[0052] Reference numerals: 11, First engine; 12, First motor; 2, Main control module; 3, Battery; 4, Generator control module; 41, Rectifier unit; 411, Thyristor; 412, Diode; 413, Filter capacitor; 42, Anti-reverse unit; 421, First MOSFET; 422, Second MOSFET; 43, Engine power supply unit; 44, Motor drive unit; 441, Third MOSFET; 442, Fourth MOSFET; 5, Inverter module; 51, DC-DC conversion unit; 511, First N-channel MOSFET; 512, Second N-channel MOSFET; 513, Common mode inductor; 52, Bidirectional inverter conversion unit; 6, MPPT module.

[0053] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0054] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0055] In the description of this application, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0056] In the description of this application, unless otherwise specified and limited, it should be noted that the terms "installation", "connection" and "linking" should be interpreted broadly. For example, they can refer to mechanical or electrical connections, or internal connections between two components. They can be direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0057] Example 1

[0058] Reference Figure 1 The diagram shown is a flowchart illustrating a generator starting control system according to an embodiment of this application. The generator starting control system includes a generator, a main control module 2, and a battery 3, a generator control module 4, and an inverter module 5, all communicatively connected to the main control module 2.

[0059] The generator includes a first engine 11 and a first motor 12. The shafts of the first engine 11 and the first motor 12 are connected by a drive or by a mechanical coupling. A flywheel is mounted on the shaft of the first engine 11. The first engine 11 is started by driving the flywheel to rotate. When the flywheel reaches a certain speed, it can drive the shaft of the first engine 11 to rotate circumferentially around itself. When the first engine 11 is running normally, it can drive the shaft of the first motor 12 to rotate, thereby controlling the rotor of the first motor 12 to rotate and cut the magnetic field generated by the coil wound on the stator, converting mechanical energy into electrical energy and outputting it in the form of alternating current. In this embodiment, the alternating current output by the first motor 12 is three-phase medium-frequency alternating current.

[0060] The generator control module 4 can convert the DC power output from the battery 3 into AC power to drive the first motor 12 or convert the AC power output from the first motor 12 into DC power; the inverter module 5 is used to convert DC power into AC power or AC power into DC power.

[0061] After the generator control module 4 is powered on, it can start the first engine 11 through the first motor 12. The specific starting principle is as follows: When the first engine 11 needs to be started, the main control module 2 sends a power-on command to the battery 3. After receiving the power-on command, the battery 3 outputs DC power. The DC power output by the battery 3 is processed by the generator control module 4 and output as three-phase AC power to power the first motor 12. After the first motor 12 is powered by AC, the coils on the stator generate a magnetic field and drive the rotor of the first motor 12 to rotate around its own axis, converting electrical energy into mechanical energy. At this time, the first motor 12 operates as a motor. The shaft of the first motor 12 drives the shaft of the first engine 11 to rotate synchronously. When the shaft of the first engine 11 rotates, it drives the flywheel to rotate. The flywheel stores energy during rotation. When the speed of the flywheel reaches the preset value, it can drive the shaft of the first engine 11 to rotate on its own, and the first engine 11 starts. After the first engine 11 starts, the battery 3 is turned off. At this time, the first engine 11 drives the rotor of the first motor 12 to rotate to realize the power generation function.

[0062] Compared to fuel, electricity is a clean energy source that does not emit large amounts of harmful gases when in use; starting the first engine 11 with the electricity from the storage battery 3 can reduce the problems of high fuel consumption and pollution during the startup of the car's generator system.

[0063] The generator starting control system also includes a button module and a display module that are communicatively connected to the main control module 2. Both the button module and the display module are connected to the battery 3. The button module can send control commands, and the display module can display the generator's operating information. The operating information includes the engine's operating status information, the load power consumption information connected to the generator's output circuit, the inverter module 5's operating status information, the generator control module 4's operating status information, and the battery 3's power information, so that the user can understand the generator's operating status in real time.

[0064] The first input terminal of the inverter module 5 is connected to the generator control module 4, and the first output terminal of the inverter module 5 can be connected to AC electrical equipment to power the AC electrical equipment using the electrical energy output by the first motor 12. The second input terminal of the inverter module 5 is connected to the AC power grid, and the second output terminal of the inverter module 5 is connected to the storage battery 3, so that the system can charge the storage battery 3 through the AC power grid.

[0065] The inverter module 5 includes a DC-DC conversion unit 51 and a bidirectional inverter conversion unit 52 connected to the generator control module 4. The DC-DC conversion unit 51 is bidirectionally connected to the battery 3. The DC-DC conversion unit 51 is used to convert the voltage of the input DC power to a preset specification voltage. The bidirectional inverter conversion unit 52 is used to convert the input DC power to AC power or convert the input AC power to DC power.

[0066] The generator control module 4 includes a rectifier unit 41, an anti-reverse unit 42, and an engine power supply unit 43.

[0067] The input terminal of the rectifier unit 41 is connected to the output terminal of the first motor 12, and the output terminal of the rectifier unit 41 is connected to the input terminal of the bidirectional inverter conversion unit 52.

[0068] The input terminal of the reverse support unit 42 is connected to the output terminal of the storage battery 3 through the DC-DC conversion unit 51, and the output terminal of the reverse support unit 42 is connected to the input terminal of the first motor 12. The reverse support unit 42 is used to convert DC power into AC power.

[0069] The input terminal of the engine power supply unit 43 is connected to the output terminal of the battery 3, and the output terminal of the engine power supply unit 43 is connected to the input terminal of the first engine 11. The engine power supply unit 43 is used to supply power to the starting module / operating module of the first engine 11.

[0070] The input terminal of the rectifier unit 41 is connected to the output terminal of the first motor 12, and the output terminal of the rectifier unit 41 is connected to the input terminal of the bidirectional inverter conversion unit 52.

[0071] The generator system's output circuits during startup and operation include a first output circuit, a second output circuit, a third output circuit, a fourth output circuit, and a fifth output circuit.

[0072] The first output circuit includes a storage battery 3, an engine power supply unit 43, and a first engine 11 connected in sequence; the first output circuit is used to supply power to the starting module or working module of the first engine 11 through the storage battery 3.

[0073] The second output circuit includes a battery 3, a DC-DC converter 51, a reverse support unit 42 and a first motor 12 connected in sequence; the second output circuit is used to supply power to the first motor 12 through the battery 3, so that the first motor 12 can drive the first engine 11 to start.

[0074] The third output circuit includes a first motor 12, a rectifier unit 41, and a bidirectional inverter conversion unit 52 connected in sequence; the third output circuit is used to supply power to AC electrical equipment using the electrical energy output by the first motor 12.

[0075] The fourth output circuit includes a first motor 12, a rectifier unit 41, a DC-DC converter unit 51 and a storage battery 3 connected in sequence; the fourth output circuit is used to charge the storage battery 3 using the electrical energy output by the first motor 12.

[0076] The fifth output circuit includes an AC power grid, a bidirectional inverter conversion unit 52, a DC-DC conversion unit 51, and a storage battery 3 connected in sequence; the fifth output circuit is used to charge the storage battery 3 using electrical energy input from the external AC power grid.

[0077] In this embodiment, the rectifier unit 41 includes three parallel rectifier circuits, and the three rectifier circuits are respectively configured to correspond one-to-one with the three-phase output terminals of the first motor 12;

[0078] Each rectifier circuit includes a thyristor 411 and a diode 412 connected in series. The phase lines corresponding to each rectifier circuit in the three-phase output terminals of the first motor 12 are connected to the anode of the thyristor 411 and the cathode of the diode 412, respectively. The anode of the thyristor 411 is connected to the cathode of the diode 412, the cathode of the thyristor 411 is connected to the positive terminal of the bus, and the anode of the diode 412 is connected to the negative terminal of the bus. The control electrode of the thyristor 411 is connected to a control signal source, which can output a current control signal. The thyristor 411 can convert alternating current into adjustable direct current; in practical use, the output current of the thyristor 411 can be controlled by the current control signal. The diode 412 has unidirectional conductivity and can convert the alternating current output by the first motor 12 into unidirectional pulsed direct current, so that the generator can charge the DC load or the battery 3.

[0079] The rectifier unit 41 also includes a filter capacitor 413 connected in parallel with the three rectifier circuits. The cathode of the thyristor 411 in the rectifier circuit is connected to the positive terminal of the filter capacitor 413, and the positive terminal of the diode 412 is connected to the negative terminal of the filter capacitor 413. The filter capacitor 413 can absorb voltage fluctuations in the circuit, filter out noise in the circuit, and ensure the stability and reliability of the circuit.

[0080] The anti-reverse unit 42 includes three parallel first control loops, the outputs of which are respectively connected to the three-phase inputs of the first motor 12; the first control loop includes a first MOSFET 421 and a second MOSFET 422 connected in series.

[0081] The drain of the first MOSFET 421 is connected to one terminal of the battery 3, the source of the second MOSFET 422 is connected to the other terminal of the battery 3, and the drain of the second MOSFET 422 is connected to the source of the first MOSFET 421; the gate of the first MOSFET 421 is used to receive the first control signal, and the gate of the second MOSFET 422 is used to receive the second control signal.

[0082] The conduction state of the first MOSFET 421 is controlled by adjusting the gate voltage of the first MOSFET 421. When the first MOSFET 421 is in the conduction state, the current flows from the source to the drain of the first MOSFET 421, thereby powering the first motor 12 and driving the shaft of the first motor 12 to rotate. The second MOSFET 422 is used to cut off or limit the current. By controlling the gate voltage of the second MOSFET 422, the circuit can be quickly cut off to prevent overcurrent or other abnormal conditions from damaging the generator.

[0083] In this embodiment, the battery 3 is a high-voltage battery (the working voltage of the battery 3 is 200V-400V); the voltage output by the battery 3 is boosted / buckled by the DC-DC conversion unit 51 and then connected to the first MOSFET 421 and the second MOSFET 422, so that the anti-coupling unit 42 can supply power to the first motor 12 with a suitable voltage.

[0084] The DC-DC converter unit 51 includes a first N-channel MOSFET 511, a second N-channel MOSFET 512, and a common-mode inductor 513. The drain of the first N-channel MOSFET 511 is connected to the positive terminal of the bus. The output terminal of the rectifier unit 41 is connected to the positive terminal of the bus. The source of the first N-channel MOSFET 511 is connected to the drain of the second N-channel MOSFET 512, and the source of the second N-channel MOSFET 512 is connected to the negative terminal of the bus. One terminal of the battery 3 is connected to the first N-channel MOSFET 511. The source of the first N-channel MOSFET 511 and the drain of the second N-channel MOSFET 512 are connected at the connection point. The other terminal of the battery 3 is connected to the source of the second N-channel MOSFET 512. One end of the common-mode inductor 513 is connected to the positive terminal of the battery 3, and the other end is connected to the connection point between the source of the first N-channel MOSFET 511 and the drain of the second N-channel MOSFET 512. The common-mode inductor 513 is used to suppress common-mode interference and improve signal quality and system performance.

[0085] In a preferred embodiment of this example, the generator starting control system further includes an MPPT module 6. MPPT stands for Maximum Power Point Tracking. The MPPT module 6 is used to receive electrical energy output from an external power generation system, and the output terminal of the MPPT module 6 is connected to the battery 3.

[0086] The input terminal of MPPT module 6 is connected to the output terminal of external power generation systems such as solar panels, wind power generation systems or geothermal power generation systems, so as to store the electrical energy of the external power generation system in the battery 3 and charge the battery 3.

[0087] Example 2

[0088] The difference between Embodiment 2 and Embodiment 1 is that the generator control module 4 includes an engine power supply unit 43 and a motor drive unit 44.

[0089] The engine power supply unit 43 is used to supply power to the start-up module / operation module of the first engine 11.

[0090] The current-mode conversion unit has a first conversion mode and a second conversion mode;

[0091] In the first conversion mode, the current mode conversion unit is used to convert the AC power output by the first engine 11 into DC power of a preset specification.

[0092] In the second conversion mode, the current mode conversion unit is used to convert the DC power output from the battery 3 into AC power that can be used to drive the first motor 12;

[0093] The system's output circuits include the sixth, seventh, eighth, ninth, tenth, and eleventh output circuits.

[0094] The sixth output circuit includes a storage battery 3, a DC-DC conversion unit 51, a current mode conversion unit and a first motor 12 connected in sequence; the sixth output circuit supplies power to the first motor 12 through the storage battery 3 to drive the first engine 11 to start.

[0095] The seventh output circuit includes a storage battery 3, an engine power supply unit 43 and a first engine 11 connected in sequence; the seventh output circuit supplies power to the starting module or working module of the first engine 11 through the storage battery 3.

[0096] The eighth output circuit includes a first motor 12, a current mode conversion unit, and a bidirectional inverter conversion unit 52 connected in sequence; the eighth output circuit supplies power to AC electrical equipment through the electrical energy output by the first motor 12.

[0097] The ninth output circuit includes a first motor 12, a current mode conversion unit, a DC-DC conversion unit 51, and a battery 3 connected in sequence; the ninth output circuit charges the battery 3 with the electrical energy output from the first motor 12.

[0098] The tenth output circuit includes a first motor 12, a current mode conversion unit, an engine power supply unit 43, and a first engine 11 connected in sequence; the tenth output circuit supplies power to the starting module and working module of the first engine 11 through the electrical energy output by the first motor 12.

[0099] The eleventh output circuit includes an AC power grid, a bidirectional inverter conversion unit 52, a DC-DC conversion unit 51, and a storage battery 3 connected in sequence. The eleventh output circuit is used to charge the storage battery 3 using an external AC power grid.

[0100] The current-mode conversion unit includes three parallel second control loops, each corresponding to a three-phase input terminal of the first engine 11. One end of each second control loop is connected to the positive terminal of the battery 3, and the other end is connected to the negative terminal of the battery 3. Each second control loop includes a third MOSFET 441 and a fourth MOSFET 442 connected in reverse series. The source of the third MOSFET 441 is connected to one end of the battery 3, the source of the fourth MOSFET 442 is connected to the drain of the third MOSFET 441, and the drain of the fourth MOSFET 442 is connected to the other end of the battery 3. The input terminal of the first engine 11 is connected between the source of the fourth MOSFET 442 and the drain of the third MOSFET 441. The drain of the fourth MOSFET 442 is used to connect to the input terminal of the DC-DC conversion unit 51. The gate of the third MOSFET 441 is used to receive a third control signal, and the gate of the fourth MOSFET 442 is used to receive a fourth control signal.

[0101] When the generator is running normally, and the current mode conversion unit is in the first conversion mode, the current flows from the output terminal of the first motor 12 to the battery 3. The PN junctions in the third MOSFET 441 and the fourth MOSFET 442 have unidirectional conductivity. The PN junction in the junction field-effect transistor can convert the AC power output from the first motor 12 into unidirectional pulsed DC power, achieving a rectification effect. The AC power output from the first motor 12 is rectified by the control circuit into DC power, which can supply power to DC loads or charge the battery 3.

[0102] When the engine starts, after the battery 3 supplies power to the current mode conversion unit, the gate of the first MOSFET 421 receives a voltage signal to control the third MOSFET 441 to become in the conducting state. Current flows from the source of the third MOSFET 441 to the drain of the third MOSFET 441, thereby supplying power to the first motor 12 to drive the shaft of the first motor 12 to rotate.

[0103] It should be understood that the embodiments are for illustrative purposes only and are not limited to this structure in the scope of the patent application. In the description of this specification, references to terms such as "an embodiment," "some embodiments," "example," "specific example," "a implementation," "a preferred implementation," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0104] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A generator starting control system, characterized in that, It includes a generator, a storage battery (3), and a generator control module (4) and an inverter module (5) connected to the storage battery (3); The generator includes a first engine (11) and a first motor (12); the first engine (11) is used to drive the first motor (12) to rotate, and the first motor (12) is used to start the first engine (11) or output AC power; The storage battery (3) is used to power the generator control module (4); The generator control module (4) is used to start the first engine (11) via the first motor (12) after power is supplied; The alternating current output by the first motor (12) is converted into direct current through the generator control module (4); The inverter module (5) is connected to the generator control module (4). The inverter module (5) is used to convert DC power into AC power or AC power into DC power. The inverter module (5) includes a DC-DC conversion unit (51) and a bidirectional inverter conversion unit (52) connected to the generator control module (4). The DC-DC converter unit (51) is bidirectionally connected to the battery (3). The DC-DC converter unit (51) is used to convert the input voltage of the DC-DC converter unit (51) into a preset specification voltage. The bidirectional inverter conversion unit (52) is used to convert the DC power input to the bidirectional inverter conversion unit (52) into AC power or to convert the AC power input into DC power; The generator control module (4) includes a reverse-drive unit (42) and an engine power supply unit (43). The input terminal of the anti-reverse unit (42) is connected to the output terminal of the battery (3) through the DC-DC conversion unit (51), and the output terminal of the anti-reverse unit (42) is connected to the input terminal of the first motor (12). The anti-reverse unit (42) is used to convert DC power into AC power. The input terminal of the engine power supply unit (43) is connected to the output terminal of the battery (3), and the output terminal of the engine power supply unit (43) is connected to the input terminal of the first engine (11). The engine power supply unit (43) is used to supply power to the starting module / working module of the first engine (11).

2. The generator starting control system as described in claim 1, characterized in that, The generator control module (4) also includes a rectifier unit (41); The input terminal of the rectifier unit (41) is connected to the output terminal of the first motor (12), and the output terminal of the rectifier unit (41) is connected to the input terminal of the bidirectional inverter conversion unit (52). The system's output circuits include a first output circuit, a second output circuit, a third output circuit, a fourth output circuit, and a fifth output circuit; The first output circuit includes a storage battery (3), an engine power supply unit (43), and a first engine (11) connected in sequence; The second output circuit includes a battery (3), a DC-DC converter (51), a reverse support unit (42), and a first motor (12) connected in sequence; The third output circuit includes a first motor (12), a rectifier unit (41), and a bidirectional inverter conversion unit (52) connected in sequence; The fourth output circuit includes a first motor (12), a rectifier unit (41), a DC-DC converter unit (51), and a battery (3) connected in sequence; The fifth output circuit includes an AC power grid, a bidirectional inverter conversion unit (52), a DC-DC conversion unit (51), and a storage battery (3) connected in sequence.

3. The generator starting control system as described in claim 2, characterized in that, The rectifier unit (41) includes three parallel rectifier circuits, and the three rectifier circuits are respectively set to correspond one-to-one with the three-phase output terminals of the first motor (12); Each rectifier circuit includes a series-connected thyristor (411) and diode (412). The phase line corresponding to each rectifier circuit in the three-phase output terminal of the first motor (12) is connected to the anode of the thyristor (411) and the cathode of the diode (412), respectively. The anode of the thyristor (411) is connected to the cathode of the diode (412). The cathode of the thyristor (411) is connected to the positive terminal of the bus, and the positive terminal of the diode (412) is connected to the negative terminal of the bus. The control electrode of the thyristor (411) is connected to a control signal source.

4. The generator starting control system as described in claim 3, characterized in that, The rectifier unit (41) also includes a filter capacitor (413) connected in parallel with the three rectifier circuits. The cathode of the thyristor (411) in the rectifier circuit is connected to the positive terminal of the filter capacitor (413), and the positive terminal of the diode (412) is connected to the negative terminal of the filter capacitor (413).

5. A generator starting control system as described in claim 2, 3, or 4, characterized in that, The anti-reverse unit (42) includes three parallel first control loops, the outputs of which are respectively connected to the three-phase inputs of the first motor (12); the first control loop includes a first MOSFET (421) and a second MOSFET (422) connected in series. The drain of the first MOSFET (421) is connected to one terminal of the battery (3), the source of the second MOSFET (422) is connected to the other terminal of the battery (3), and the drain of the second MOSFET (422) is connected to the source of the first MOSFET (421). The gate of the first MOSFET (421) is used to receive the first control signal, and the gate of the second MOSFET (422) is used to receive the second control signal.

6. A generator starting control system as described in claim 1, characterized in that, The generator control module (4) includes an engine power supply unit (43) and a motor drive unit (44). The engine power supply unit (43) is used to supply power to the start-up module / operation module of the first engine (11); The current-mode conversion unit has a first conversion mode and a second conversion mode; In the first conversion mode, the current mode conversion unit is used to convert the AC power output by the first engine (11) into DC power of a preset specification. In the second conversion mode, the current mode conversion unit is used to convert the DC power output from the battery (3) into AC power that can be used to drive the first motor (12); The system's output circuits include the sixth, seventh, eighth, ninth, tenth, and eleventh output circuits. The sixth output circuit includes a battery (3), a DC-DC converter (51), a current mode converter and a first motor (12) connected in sequence; The seventh output circuit includes a battery (3), an engine power supply unit (43), and a first engine (11) connected in sequence; The eighth output circuit includes a first motor (12), a current mode conversion unit, and a bidirectional inverter conversion unit (52) connected in sequence; The ninth output circuit includes a first motor (12), a current mode conversion unit and a DC-DC conversion unit (51) and a battery (3) connected in sequence; The tenth output circuit includes a first motor (12), a current mode conversion unit, an engine power supply unit (43), and a first engine (11) connected in sequence; The eleventh output circuit includes an AC power grid, a bidirectional inverter conversion unit (52), a DC-DC conversion unit (51), and a storage battery (3) connected in sequence.

7. A generator starting control system as described in claim 1, 2, 3, 4 or 6, characterized in that, The current mode conversion unit includes three parallel second control loops, each corresponding to a three-phase input terminal of the first engine (11). One end of each second control loop is connected to the positive terminal of the battery (3), and the other end is connected to the negative terminal of the battery (3). The second control loop includes a third MOSFET (441) and a fourth MOSFET (442) connected in reverse series. The source of the third MOSFET (441) is connected to one end of the battery (3), and the source of the fourth MOSFET (442) is connected to the third MOSFET. The drain of transistor (441) is connected, the drain of the fourth MOSFET (442) is connected to the other end of the battery (3), the input terminal of the first engine (11) is connected between the source of the fourth MOSFET (442) and the drain of the third MOSFET (441), the drain of the fourth MOSFET (442) is used to connect to the input terminal of the DC-DC conversion unit (51); the gate of the third MOSFET (441) is used to receive the third control signal, and the gate of the fourth MOSFET (442) is used to receive the fourth control signal.

8. A generator starting control system as described in claim 1, 2, 3, 4 or 6, characterized in that, It also includes a main control module (2), a battery (3), a generator control module (4) and an inverter module (5), all of which are connected to the main control module (2) for communication. The main control module (2) is connected to a button module and a display module for communication. The button module is used to send control commands, and the display module is used to display the generator's operating information.

9. A generator starting control system as described in claim 1, 2, 3, 4 or 6, characterized in that, The system also includes an MPPT module (6), which is connected to the battery (3). The MPPT module (6) is used to receive electrical energy output from an external power generation system. The output of the MPPT module (6) can be connected to a DC load.

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