Range extender and its method for controlling power generation

Abstract

The present invention provides a range extender, which includes a rotational speed-torque decoupling module, an NT / TN two control mode selection module, a multi-mode driving selection module, and a normal / rapid power increase and decrease mode selection module; the multi-mode driving selection module, the rotational speed-torque decoupling module, the normal / rapid power increase and decrease mode selection module, and the NT / TN two control mode selection module are sequentially connected by signals. The present invention also provides a method for controlling power generation of a range extender. The present invention has constant power / constant voltage / multi-point / power following power generation modes, with diverse power generation modes; NT (torque / rotational speed) and TN (rotational speed / torque) two control modes; and smoothness in power increase and decrease. The permanent magnet synchronous range extender controller (RCU) of the present invention is compatible with the engine rotational speed-generator torque (NT) control mode and the engine torque-generator rotational speed (TN) control mode, and has a wider application range, providing more choices for customers.

Description

Technical Field

[0001] The present invention relates to a range extender, and more particularly to a range extender and a method for controlling power generation thereof. Background Art

[0002] A range extender is a power generation device used in hybrid electric vehicles. There is an independent power generation system inside the range extender. This power generation system drives the piston to move through a gasoline engine, and the piston drives the crank-link mechanism to drive the generator to rotate, thereby converting the chemical energy of gasoline into mechanical energy and then into electrical energy.

[0003] Existing range extenders have the following disadvantages:

[0004] 1. The working mode is single, such as working at a constant power point;

[0005] 2. There are bumps when increasing or decreasing power, and the power switching is uneven;

[0006] 3. The control mode is single, only one mode of NT (torque / speed).

[0007] Therefore, it is necessary to improve the existing technology. Summary of the Invention

[0008] The technical problem to be solved by the present invention is to provide an efficient range extender and a method for controlling power generation thereof.

[0009] To solve the above technical problem, the present invention provides a range extender, including a speed-torque decoupling module, an NT / TN two control mode selection module, a multi-mode driving selection module, and a general / rapid power increase and decrease mode selection module;

[0010] The multi-mode driving selection module, the speed-torque decoupling module, the general / rapid power increase and decrease mode selection module, and the NT / TN two control mode selection module are sequentially connected by signals.

[0011] As an improvement to the range extender of the present invention:

[0012] The multi-mode driving selection module is used to select a driving mode, and the driving mode includes a normal mode, an ECO mode, and a sport mode;

[0013] The speed-torque decoupling module is used to decouple the mechanical power REPwrSet to obtain a speed request and a torque request;

[0014] The general / rapid power increase and decrease module is used to perform a first-order inertia link processing on the target speed and the target torque, so that the target value responds relatively slowly;

[0015] The NT / TN two control mode selection module is used to select a control mode, and the control mode includes an NT mode and a TN mode;

[0016] In the NT mode, for the engine speed - motor torque, after decoupling, the target speed is sent to the engine and the target torque is sent to the motor; meanwhile, the engine operates in the speed control mode and the motor operates in the torque control mode.

[0017] In the TN mode, for the engine torque - motor speed, after decoupling, the target speed is sent to the motor and the target torque is sent to the engine; meanwhile, the motor operates in the speed control mode and the engine operates in the torque control mode.

[0018] As a further improvement to the range extender of the present invention:

[0019] A plateau correction module is provided in the speed - torque decoupling module, and the plateau correction module is used to correct the speed - torque according to the atmospheric pressure signal AtmPre.

[0020] The present invention also provides a method for controlling power generation of a range extender, including the following steps:

[0021] 1) The VCU sends the driving signal to the multi - mode driving selection module. The multi - mode driving selection module selects the driving mode according to the driving signal and sends it to the speed - torque decoupling module;

[0022] 2) The VCU sends the target mechanical power REPwrSet to the speed - torque decoupling module. The speed - torque decoupling module, according to the target mechanical power REPwrSet and the driving mode, obtains the pre - correction speed request SpdReq_pre and torque request TrqReq_pre through decoupling and sends them to the plateau correction module;

[0023] 3) The VCU sends the atmospheric pressure signal AtmPre to the plateau correction module. The plateau correction module obtains the atmospheric pressure correction coefficient according to the atmospheric pressure signal AtmPre, and then, according to the atmospheric pressure correction coefficient, the pre - correction speed request SpdReq_pre and torque request TrqReq_pre, obtains the target torque TrqReq and target speed SpdReq, and sends them as the pre - torque value ISGTrqCmd_pre and pre - speed value ISGSpdCmd_pre to the general / rapid power - up / down module;

[0024] 4) The VCU sends the fast rise and fall command FastPowerRep to the general / fast rise and fall power module; the general / fast rise and fall power module starts the normal mode or the fast rise / fall mode according to the fast rise and fall command FastPowerRep, performs signal merging processing on the fast rise and fall command FastPowerRep, and then filters the previous torque value ISGTrqCmd_pre and the previous speed value ISGSpdCmd_pre according to the merged fast rise and fall command FastPowerRep to make the response curve smoother, obtaining the torque value ISGTrqCmd and the speed value ISGSpdCmd;

[0025] 5) The VCU sends the mode selection command RECtriMode to the NT / TN two control mode selection modules. The NT / TN two control mode selection modules start the engine speed - motor torque module or the engine torque - motor speed module according to the mode selection command RECtriMode; the engine speed - motor torque module or the engine torque - motor speed module receives the target torque TrqReq and the target speed SpdReq;

[0026] The GCU and ECU send the current torque value RETrq and the current speed value RESpd of the range extender to the engine speed - motor torque module and the engine torque - motor speed module; the engine speed - motor torque module or the engine torque - motor speed module corrects the issued command parameters according to the torque value ISGTrqCmd and the speed value ISGSpdCmd, the current torque value RETrq and the current speed value RESpd of the range extender, obtains the corrected torque value or speed value, and sends it to the engine or the motor.

[0027] As an improvement to the range extender control power generation method of the present invention:

[0028] The map of the driving mode includes 15 range extender operating condition points,

[0029] If the 15 points are calibrated to be exactly the same, a constant power generation mode is achieved;

[0030] If more than two and less than 15 operating condition points are calibrated to be the same, a multi - point power generation mode is achieved;

[0031] Maintain the output voltage constant, and achieve a constant voltage power generation mode by adjusting the speed and torque.

[0032] As a further improvement to the range extender control power generation method of the present invention:

[0033] The corrected rotational speed request SpdReq output is the rotational speed request SpdReq_pre before correction divided by the atmospheric pressure correction coefficient, and the corrected torque request TrqReq is the torque request TrqReq_pre before correction multiplied by the atmospheric pressure correction coefficient.

[0034] As a further improvement to the method for controlling power generation of the range extender of the present invention:

[0035] In step 4, a first-order inertial filtering method is used for the filtering process.

[0036] The power generation strategy of the present invention mainly includes the following:

[0037] 1. General / rapid power increase and decrease mode;

[0038] 2. Constant power / constant voltage / multi-point / power following power generation mode

[0039] 3. Support for selection of two control modes: NT (torque / rotational speed) and TN (rotational speed / torque);

[0040] 4. Selection of multiple modes: economy / sports / normal;

[0041] 5. High altitude correction mode;

[0042] The technical advantages of the range extender of the present invention and its method for controlling power generation are:

[0043] The present invention has a constant power / constant voltage / multi-point / power following power generation mode, with diverse power generation modes; two control modes: NT (torque / rotational speed) and TN (rotational speed / torque); and smoothness in power increase and decrease. The permanent magnet synchronous range extender controller (RCU) of the present invention is compatible with the engine speed - generator torque (NT) control mode and the engine torque - generator speed (TN) control mode, with a wider application range, providing more choices for customers. Description of the Drawings

[0044] The following further elaborates on the specific embodiments of the present invention in conjunction with the drawings.

[0045] Figure 1 It is a diagram of the rotational speed - torque decoupling module;

[0046] Figure 2 It is a functional block diagram of the rotational speed - torque decoupling module;

[0047] Figure 3 It is a functional logic block diagram of the rotational speed - torque decoupling module;

[0048] Figure 4 It is a functional logic block diagram of the NT / TN two control mode selection module;

[0049] Figure 5It is the functional logic block diagram of the multi-mode driving selection module;

[0050] Figure 6 It is the functional logic block diagram of the general / rapid power lift mode selection module;

[0051] Figure 7 It is the functional logic block diagram of the altitude correction function. Specific implementation mode

[0052] The present invention will be further described below in conjunction with specific embodiments, but the protection scope of the present invention is not limited thereto.

[0053] Embodiment 1, range extender, such as Figure 1-7 shown, including a speed-torque decoupling module, an NT / TN two control mode selection module, a multi-mode driving selection module, and a general / rapid power lift mode selection module.

[0054] A high altitude correction module is also provided in the speed-torque decoupling module.

[0055] The present invention can select the range extender power generation mode to be constant power mode power generation, multi-point mode power generation, or power following mode power generation. It is achieved through the speed-torque decoupling module:

[0056] 1), constant power generation mode:

[0057] That is, the range extender only works at a fixed operating point, and the generated power remains constant.

[0058] 2), constant voltage power generation mode:

[0059] That is, when there is no battery pack to provide high voltage, the power generation power of the range extender remains constant, and the power generation voltage remains constant, which is mostly applicable to the limp mode.

[0060] 3), multi-point power generation mode:

[0061] That is, the range extender works on the optimal economic operation line, with a limited number of operating points.

[0062] 4), power following power generation mode:

[0063] That is, the range extender follows the power generation power command requested by the VCU and works in the entire optimal economic operation range.

[0064] Regardless of the selected power generation mode, during the process from startup to the start of power generation, the actual power generation power of the range extender will start from the minimum power generation power, migrate along the optimal power generation curve, and gradually rise to the target power generation power, completing the coordinated control process of the engine and the generator, avoiding the unstable operation caused by the inconsistent response speed between the two, and also avoiding the poor fuel consumption / emission caused by deviating from the optimal power generation curve.

[0065] The engine control unit (ECU) has two control modes: torque control and speed control. The generator control unit (GCU) also has two control modes: torque control and speed control. The permanent magnet synchronous range extender control unit (RCU) is mainly used to respond to the instructions of the VCU to achieve coordinated control of the engine and the generator.

[0066] Through various driving modes, the ECO, Sport, and Normal modes can be selected. ECO, Sport, and Normal are three operating modes of the whole vehicle. When the whole vehicle operates in different modes, the calculation of the target mechanical power of the range extender and the decoupling path will also be different.

[0067] (1) Normal mode: The normal mode. In this mode, the range extender will pay attention to both the power performance and economy of the vehicle;

[0068] (2) ECO mode: The economy mode. In this mode, the range extender will pay more attention to the economy of the vehicle;

[0069] (3) Sport mode: The power mode. In this mode, the range extender will pay more attention to the power performance of the vehicle;

[0070] The RCU supports two power conversion strategies: general power increase and decrease and rapid power increase and decrease. In the general / rapid power increase and decrease mode

[0071] When the selection module selects the function of rapidly increasing or decreasing power, the RCU can rapidly increase or decrease the power generation power to better respond to the power request instruction of the vehicle control unit.

[0072] In the high-altitude low-pressure environment, due to the decrease in the engine intake pressure, the maximum allowable torque value of the range extender decreases. Therefore, in the high-altitude environment, the RCU will make appropriate corrections to the control strategy to control the range extender to reduce torque and increase speed to adapt to the high-altitude environment.

[0073] Function implementation:

[0074] 1. In the power generation state, in order to enable the range extender to quickly respond to the target power in real time, the RCU needs to decouple the target mechanical power into the target speed and target torque instructions;

[0075] 2. In the power generation state, the NT / TN two control modes can be selected. The former is the engine speed - motor torque, and the latter is the engine torque - motor speed. In this way, a set of RCUs can select two control modes through calibration and can be adapted to more ECUs and GCUs;

[0076] 3. In the power generation state, high-altitude correction is required to increase the speed and decrease the torque to ensure that the range extender can also respond to the target power in the high-altitude state;

[0077] 4. In the power generation state, it is necessary to respond to the driving mode command of the vehicle VCU and select the corresponding range extender operating condition line in different driving modes;

[0078] 5. In order to prevent the target speed and target torque from being directly stepped after decoupling, it is necessary to process the target speed and target torque with the first-order inertia link so that the target value responds more slowly.

[0079] 6. Respond to the rapid power increase and decrease instructions of the vehicle VCU. By calibrating the time constants of different first-order inertia links, the response speed can be adjusted to complete the normal power increase and decrease, as well as the rapid power increase and decrease operations of the range extender.

[0080] 1. Multiple mode driving selection module:

[0081] Function implementation method:

[0082] Change the driving mode input and observe that under different driving mode inputs, the target torque TrqReq and target speed SpdReq that need to be output are different according to the map lookup table in each mode.

[0083] When the driving mode is 0 and 1, it runs according to the calibrated map in normal mode.

[0084] When driving mode is 2, it runs according to the calibrated map in ECO mode.

[0085] When driving mode is 3, it runs according to the calibrated sport mode map.

[0086] 2. Speed ​​torque decoupling module:

[0087] Function Implementation Method

[0088] After different target mechanical powers REPwrSet are input, the speed and torque corresponding to the map are obtained through decoupling as the speed request SpdReq_pre and torque request TrqReq_pre before correction.

[0089] The maps are slightly different for different modes. For example, the sports mode focuses more on power, the economic mode is more fuel-efficient, and the normal mode takes both into account and runs at the optimal power point.

[0090] Currently, the map supports the calibration of 15 operating points of the range extender. The operating points of the range extender are predetermined, for example, the data is confirmed through bench experiments, and then written into the table in the module. The 15 points are connected to form the range extender operating line, and the range extender can follow the power along this operating line.

[0091] If 15 points are calibrated to be exactly the same, a constant power generation mode can be achieved.

[0092] If more than two and less than 15 operating points are calibrated to be the same, a multi-point power generation mode can be achieved.

[0093] By maintaining the output voltage constant and adjusting the speed and torque, a constant voltage power generation mode can be achieved.

[0094] III. High-altitude correction module

[0095] The high-altitude correction module is a sub-module inside the decoupling module, which corrects the decoupled value and then outputs it;

[0096] Function implementation method:

[0097] The VCU sends the atmospheric pressure signal AtmPre to the high-altitude correction module. The speed-torque decoupling module obtains the pre-correction speed request SpdReq_pre and torque request TrqReq_pre according to the target mechanical power REPwrSet. The high-altitude correction module looks up the table according to the atmospheric pressure signal AtmPre to obtain the atmospheric pressure correction coefficient;

[0098] Under different atmospheric pressures, the atmospheric pressure correction coefficients are different. The output corrected speed request SpdReq is the pre-correction speed request SpdReq_pre / the atmospheric pressure correction coefficient, and the corrected torque request TrqReq is the pre-correction torque request TrqReq_pre * the atmospheric pressure correction coefficient.

[0099] In the high-altitude mode, the engine torque will decrease. To obtain the same power, when the torque cannot reach, the method of increasing the speed and reducing the torque will be selected to reach the corresponding power value.

[0100] IV. General / rapid power increase and decrease module:

[0101] To prevent the target speed and target torque decoupled by the speed-torque decoupling module from being directly stepped down, it is necessary to process the target speed and target torque through a first-order inertia link so that the target value responds more slowly.

[0102] The general / rapid power increase and decrease module modifies the instruction issuing speed of the normal and rapid modes, which can be simply understood as the speed of time;

[0103] Function implementation method:

[0104] The above module only takes the motor target torque as an example. The settings of the motor target speed, engine target torque, and engine target speed are similar to the motor target torque and will not be elaborated here.

[0105] Under different fast rise and fall commands, the motor target speed, motor target torque, engine target speed, and engine target torque have different response rates, which are related to the calibrated first-order inertia time constant. Among them, when the fast rise and fall commands are 0 and 3, the response rates are the same; when the fast rise and fall commands are 1 and 2, the response rates are the same;

[0106] Fast rise and fall commands: 0 (normal) - normal, 1 (rise) / 2 (fall) - fast rise and fall power request, 3 - reserved. This is an instruction issued by the VCU; when the fast rise and fall commands are 2 and 0, the normal mode is started; when the fast rise and fall command is 1, the fast mode is started.

[0107] The first-order inertia time constants of the motor target speed, motor target torque, engine target speed, and engine target torque can be calibrated separately, and the first-order inertia time constants in the fast rise / fall and normal modes can be calibrated separately; changing the calibrated first-order inertia time constant will also result in different response rates.

[0108] The VCU sends the fast rise and fall command FastPowerRep to the general / fast rise and fall power module; the general / fast rise and fall power module starts the normal mode or the fast rise / fall mode according to the fast rise and fall command FastPowerRep, performs signal merging processing on the fast rise and fall command FastPowerRep, and then filters the previous torque value ISGTrqCmd_pre according to the merged fast rise and fall command FastPowerRep using the first-order inertia filtering method to make the response curve smoother and obtain the torque value ISGTrqCmd.

[0109] V. NT / TN two control mode selection module:

[0110] The NT / TN two control mode selection module integrates the NT / TN two control modes. In the former, the motor controls the torque and the generator controls the speed; in the latter, the motor controls the speed and the generator controls the torque.

[0111] Function implementation method:

[0112] In the NT mode, engine speed - motor torque. After decoupling, the target speed is sent to the engine and the target torque is sent to the motor. At the same time, the engine runs in the speed control mode and the motor runs in the torque control mode.

[0113] In the TN mode, engine torque - motor speed. After decoupling, the target speed is sent to the motor and the target torque is sent to the engine. At the same time, the motor runs in the speed control mode and the engine runs in the torque control mode.

[0114] The VCU sends the mode selection instruction RECtriMode to the mode selection module, and the mode selection module starts the engine speed - motor torque module or the engine torque - motor speed module according to the mode selection instruction; the engine speed - motor torque module or the engine torque - motor speed module receives the target torque TrqReq and the target speed SpdReq. The engine speed - motor torque module and the engine torque - motor speed module also receive the current torque value RETrq of the range extender and the current speed value RESpd of the range extender uploaded by the GCU and the ECU respectively, and the engine speed - motor torque module and the engine torque - motor speed module correct the issued instruction parameters through torque closed - loop and speed transformation to obtain the corrected torque value or speed value.

[0115] After the speed and torque are decoupled and corrected for high altitude, they are sent to the GCU / ECU; the RCU has an internal power closed - loop, performs PI regulation based on the feedback power and the requested power, and then inputs to the decoupling module for decoupling.

[0116] The power generation control method of the present invention includes the following steps:

[0117] 1). The VCU sends the driving signal to the multi - mode driving selection module, and the multi - mode driving selection module selects the driving mode according to the driving signal and sends it to the speed - torque decoupling module;

[0118] 2). The VCU sends the target mechanical power REPwrSet to the speed - torque decoupling module. The speed - torque decoupling module decouples according to the target mechanical power REPwrSet and the driving mode to obtain the pre - correction speed request SpdReq_pre and torque request TrqReq_pre, and sends them to the high - altitude correction module;

[0119] 3). The VCU sends the atmospheric pressure signal AtmPre to the high - altitude correction module. The high - altitude correction module obtains the atmospheric pressure correction coefficient according to the atmospheric pressure signal AtmPre, and then according to the atmospheric pressure correction coefficient, the pre - correction speed request SpdReq_pre and torque request TrqReq_pre, obtains the target torque TrqReq and the target speed SpdReq, and sends them as the pre - torque value ISGTrqCmd_pre and the pre - speed value ISGSpdCmd_pre to the general / rapid power - up / down module.

[0120] 4) VCU sends the fast rise and fall instruction FastPowerRep to the general / fast rise and fall power module; the general / fast rise and fall power module starts the normal mode or the fast rise / fast fall mode according to the fast rise and fall instruction FastPowerRep, performs signal merging processing on the fast rise and fall instruction FastPowerRep, and then filters the torque previous value ISGTrqCmd_pre and the speed previous value ISGSpdCmd_pre according to the merged fast rise and fall instruction FastPowerRep to make the response curve smoother, and obtain the torque value ISGTrqCmd and the speed value ISGSpdCmd.

[0121] 5) VCU sends the mode selection instruction RECtriMode to the NT / TN control mode selection modules. The NT / TN control mode selection modules start the engine speed-motor torque module or the engine torque-motor speed module according to the mode selection instruction RECtriMode; the engine speed-motor torque module or the engine torque-motor speed module receives the target torque TrqReq and the target speed SpdReq.

[0122] The GCU and ECU send the current torque value RETrq of the range extender and the current speed value RESpd of the range extender to the engine speed-motor torque module and the engine torque-motor speed module; the engine speed-motor torque module or the engine torque-motor speed module corrects and sends the instruction parameters according to the torque value ISGTrqCmd and the speed value ISGSpdCmd, the current torque value RETrq of the range extender and the current speed value RESpd of the range extender, obtains the corrected torque value or speed value, and sends it to the engine or motor.

[0123] Finally, it should be noted that the above examples are only some specific embodiments of the present invention. Obviously, the present invention is not limited to the above embodiments, and there are many variations. All variations that can be directly derived or associated with the content disclosed by a person skilled in the art should be considered as the protection scope of the present invention.

Claims

1. Extended-range generator control power generation method, characterized in that: The extended-range generator includes a speed-torque decoupling module, an NT / TN two control mode selection module, a multi-mode driving selection module, and a normal / rapid power rise and fall mode selection module; The multi-mode driving selection module, the speed-torque decoupling module, the normal / rapid power rise and fall mode selection module, and the NT / TN two control mode selection module are sequentially connected by signals; The multi-mode driving selection module is used to select a driving mode, and the driving mode includes normal mode, ECO mode, and sport mode; The speed-torque decoupling module is used to decouple the mechanical power REPwrSet to obtain a speed request and a torque request; The normal / rapid power rise and fall module is used to perform a first-order inertia link processing on the target speed and target torque, so that the target value responds relatively slowly; The NT / TN two control mode selection module is used to select a control mode, and the control mode includes NT mode and TN mode; In the NT mode, engine speed - motor torque, the decoupled target speed is sent to the engine, and the target torque is sent to the motor; at the same time, the engine runs in a speed control mode, and the motor runs in a torque control mode; In the TN mode, engine torque - motor speed, the decoupled target speed is sent to the motor, and the target torque is sent to the engine; At the same time, the motor runs in a speed control mode, and the engine runs in a torque control mode; A plateau correction module is provided in the speed-torque decoupling module, and the plateau correction module is used to correct the speed and torque according to the atmospheric pressure signal AtmPre; The extended-range generator control power generation method includes the following steps: 1). The VCU sends a driving signal to the multi-mode driving selection module, and the multi-mode driving selection module selects a driving mode according to the driving signal and sends it to the speed-torque decoupling module; 2). The VCU sends the target mechanical power REPwrSet to the speed-torque decoupling module, and the speed-torque decoupling module obtains the pre-correction speed request SpdReq_pre and torque request TrqReq_pre through decoupling according to the target mechanical power REPwrSet and the driving mode, and sends them to the plateau correction module; 3). The VCU sends the atmospheric pressure signal AtmPre to the plateau correction module, and the plateau correction module obtains an atmospheric pressure correction coefficient according to the atmospheric pressure signal AtmPre, and then obtains the target torque TrqReq and target speed SpdReq according to the atmospheric pressure correction coefficient, the pre-correction speed request SpdReq_pre, and the torque request TrqReq_pre, and sends them as the torque previous value ISGTrqCmd_pre and the speed previous value ISGSpdCmd_pre to the normal / rapid power rise and fall module; 4), the VCU sends the fast rise and fall command FastPowerRep to the general / fast rise and fall power module; the general / fast rise and fall power module starts the normal mode or the fast rise / fall mode according to the fast rise and fall command FastPowerRep, performs signal merging processing on the fast rise and fall command FastPowerRep, and then filters the previous torque value ISGTrqCmd_pre and the previous speed value ISGSpdCmd_pre according to the merged fast rise and fall command FastPowerRep to make the response curve smoother, obtaining the torque value ISGTrqCmd and the speed value ISGSpdCmd; 5), the VCU sends the mode selection command RECtriMode to the NT / TN two control mode selection modules, and the NT / TN two control mode selection modules start the engine speed - motor torque module or the engine torque - motor speed module according to the mode selection command RECtriMode; the engine speed - motor torque module or the engine torque - motor speed module receives the target torque TrqReq and the target speed SpdReq; The GCU and the ECU send the current torque value RETrq and the current speed value RESpd of the range extender to the engine speed - motor torque module and the engine torque - motor speed module; the engine speed - motor torque module or the engine torque - motor speed module corrects the issued command parameters according to the torque value ISGTrqCmd, the speed value ISGSpdCmd, the current torque value RETrq and the current speed value RESpd of the range extender, obtains the corrected torque value or speed value, and sends it to the engine or the motor.

2. The range extender control power generation method according to claim 1, characterized in that: The map of the driving mode includes 15 range extender operating condition points, If the 15 points are calibrated to be exactly the same, a constant power generation mode is achieved; If more than two and less than 15 operating condition points are calibrated to be the same, a multi - point power generation mode is achieved; Maintain the output voltage constant, and achieve a constant voltage power generation mode by adjusting the speed and torque.

3. The range extender control power generation method according to claim 2, characterized in that: The output corrected speed request SpdReq is the previous speed request SpdReq_pre / atmospheric pressure correction coefficient, and the corrected torque request TrqReq is the previous torque request TrqReq_pre * atmospheric pressure correction coefficient.

4. The range extender control power generation method according to claim 3, characterized in that: In step 4, the filtering process uses a first - order inertial filtering method.

Images