JP4263424B2 - Generator control device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a generator control device, and more particularly, to a generator control device that generates electric power using the power of an internal combustion engine transmitted via a power transmission member.
[0002]
[Prior art]
Conventionally, this type of generator control device is a motor control device that generates electric power from an internal combustion engine and starts the internal combustion engine, based on the remaining capacity of a secondary battery that can be charged and discharged by the motor. A device that determines the amount of power generated by a motor has been proposed (for example, Japanese Patent Laid-Open No. 2000-125414). In this device, the allowable power is obtained from the remaining capacity of the secondary battery, the control torque is calculated by multiplying this by the actual rotational speed, and the conversion coefficient is calculated, and the motor is generated using this control torque. Drive control is performed as a machine.
[0003]
[Problems to be solved by the invention]
However, such a generator control device merely calculates the control torque based on the remaining capacity of the secondary battery, and does not consider the durability of the system. For example, when the output shaft of the internal combustion engine and the rotating shaft of the generator are belted, depending on the calculated control torque, belt slippage or damage to the belt may occur.
[0004]
The generator control device of the present invention is intended to drive and control a generator in consideration of the properties and power transmission state of a power transmission member that transmits power from an internal combustion engine.
[0005]
[Means for solving the problems and their functions and effects]
The generator control apparatus of the present invention employs the following means in order to achieve the above-described object.
[0006]
The generator control device of the present invention comprises:
A control device for a generator that generates electric power by the power of an internal combustion engine transmitted through a power transmission member,
Power generation torque setting means for setting the power generation torque of the generator based on the property and / or power transmission state of the power transmission member;
Control means for driving and controlling the generator using the set power generation torque;
It is a summary to provide.
[0007]
In the generator control device according to the present invention, the power generation torque of the generator that generates power by the power of the internal combustion engine transmitted through the power transmission member is set based on the property of the power transmission member and the power transmission state. The generator is driven and controlled using the generated power generation torque. Since the generator is driven and controlled using the power generation torque set based on the properties and power transmission state of the power transmission member, the power transmission by the power transmission member can be performed more appropriately. As a result, the internal combustion engine and the generator can be operated efficiently.
[0008]
In such a generator control device of the present invention, the generator control torque setting means for setting the power generation request torque based on the remaining capacity of the secondary battery that can be charged by the generator is provided, and the power generation torque setting means includes the power generation torque setting means. The power generation request torque set by the request torque setting means may be a means for setting the power generation torque by correcting the power generation request torque based on the property and / or power transmission state of the power transmission member. If it carries out like this, the remaining capacity of a secondary battery can be made appropriate, and transmission of power by a power transmission member can be performed more appropriately.
[0009]
In the control device for a generator according to the present invention that corrects the required power generation torque, the power generation torque setting means is a limit torque setting means for setting a limit torque based on a property and / or power transmission state of the power transmission member. The power generation request torque is set as the power generation torque when the power generation request torque is less than or equal to the set limit torque, and when the power generation request torque is greater than the set limit torque, the limit torque is set as the power generation torque. It can also be a means to set as. In this case, the limiting torque setting means may set the limiting torque based on the relationship between the operating state of the internal combustion engine and the properties of the power transmission member and the power transmission state. Further, the limit torque setting means sets the rotation speed and output torque as the operating state of the internal combustion engine, and the allowable maximum torque allowed from the characteristics of the power transmission member and the power transmission state at this rotation speed and this output torque as the limit torque. It can also be done.
[0010]
In the generator control device of the present invention, the power generation torque setting means is a means for setting the power generation torque by using the operating state of the internal combustion engine as the power transmission state of the power transmission member. You can also. Since the power transmission member transmits the power of the internal combustion engine to the generator, the operating state of the internal combustion engine reflects the power transmission state of the power transmission member. Therefore, by setting the power generation torque based on the operating state of the internal combustion engine, the power transmission by the power transmission member can be performed more appropriately. In this aspect of the generator control device of the present invention, the power generation torque setting means is means for setting the power generation torque based on the rotational speed and output torque as the operating state of the internal combustion engine. You can also.
[0011]
Further, in the generator control device of the present invention, the power transmission member is a belt hung on an output shaft of the internal combustion engine and a rotation shaft of the generator, and the power generation torque setting means is the power transmission member. The power generation torque may be set to prevent belt slippage based on the belt properties and / or the power transmission state. In this way, it is possible to generate power without belt slippage.
[0012]
In the generator control device according to the present invention, the power generation torque setting means may be means for setting the power generation torque based on a rating of the power generator.
[0013]
In the generator control device of the present invention, the generator may be a generator motor that can start the internal combustion engine with power output through the power transmission member upon receiving power supply. it can.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described using examples. FIG. 1 is a configuration diagram showing an outline of a configuration of a generator motor control device 20 as an embodiment of the present invention. As shown in the figure, the generator motor control device 20 according to the embodiment generates power by power from the engine 10 via a belt 12 hung on the crankshaft 11 of the engine 10 or cranks and starts the engine 10 to generate power. This is a control device that drives and controls a starter motor generator (hereinafter abbreviated as “starter MG”) 13 as an electric motor, and is configured around an electronic control unit 30.
[0015]
The engine 10 is configured as an internal combustion engine driven by, for example, gasoline or light oil. The crankshaft 11 of the engine 10 is connected to a stepped or continuously variable transmission 14 via a damper or the like (not shown) so that power from the engine 10 is output to the drive shaft 15 via the transmission 14. It has become. Operation control of the engine 10, for example, fuel injection control, ignition control, intake air amount adjustment control, and the like are performed by an engine electronic control unit (hereinafter referred to as engine ECU) 16. The engine ECU 16 communicates with the electronic control unit 30 and outputs data related to the operating state of the engine 10 to the electronic control unit 30 as necessary.
[0016]
The starter MG 13 exchanges power with the battery 18 as a secondary battery via the inverter circuit 17, and receives drive control from the electronic control unit 30.
[0017]
The electronic control unit 30 is configured as a microprocessor centered on the CPU 32. In addition to the CPU 32, a ROM 34 for storing a processing program, a RAM 36 for temporarily storing data, an input / output port and a communication port (not shown), Is provided. The electronic control unit 30 includes a rotation speed Nst of the starter MG13 detected by the rotation speed sensor 40 attached to the starter MG13, a phase current of the starter MG13 detected by a current sensor (not shown) attached to the inverter circuit 17, a battery The battery voltage V detected by the voltage sensor 42 connected between the 18 output terminals, the battery current i detected by the current sensor 44 attached to the power line from the battery 18, and the temperature sensor 46 attached to the battery 18. The battery temperature T detected by is input through the input port. Further, a switching control signal or the like is output from the electronic control unit 30 to the inverter circuit 17 via an output port. Further, as described above, the electronic control unit 30 is connected to the engine ECU 16 via the communication port, and the rotational speed Ne and output of the engine 10 detected from the engine ECU 16 by a rotational speed sensor (not shown) as necessary. Data such as torque Te can be input.
[0018]
Next, the operation of the control apparatus 20 for the generator motor according to the embodiment thus configured will be described. FIG. 2 is a flowchart showing an example of a torque control routine executed by the electronic control unit 30 in order to drive and control the starter MG13. This routine is repeatedly executed every predetermined time (for example, every 8 msec).
[0019]
When the torque control routine is executed, the CPU 32 of the electronic control unit 30 first starts the battery current i detected by the current sensor 44, the battery voltage V detected by the voltage sensor 42, and the starter detected by the rotation speed sensor 40. A process of reading data necessary for control such as the rotational speed Nst of the MG 13, the remaining capacity (SOC) of the battery 18, the rotational speed Ne of the engine 10 and the torque Te supplied from the engine ECU 16 is performed (step S 100). Here, the reading of the remaining capacity (SOC) of the battery 18 is calculated based on the integration of the charging / discharging current (battery current i) of the battery 18 by executing a remaining capacity (SOC) calculation routine (not shown) in the embodiment. The data stored at a predetermined address in the RAM 36 is read. As a matter of course, the remaining capacity (SOC) of the battery 18 may be other than that based on the integration of the charge / discharge current of the battery 18.
[0020]
Subsequently, the charge / discharge request amount Pch is calculated based on the remaining capacity (SOC) of the battery 18 (step S102). In the embodiment, the charge / discharge request amount Pch is calculated by setting the relationship between the remaining capacity (SOC) of the battery 18 and the charge / discharge request amount Pch and storing it in the ROM 34 in advance as a charge / discharge request amount derivation map. When the capacity (SOC) is given, the charge / discharge request amount Pch corresponding to the remaining capacity (SOC) is derived from the charge / discharge request amount derivation map. FIG. 3 shows an example of a charge / discharge request amount derivation map. In the charge / discharge request amount derivation map of FIG. 3, the charge / discharge request amount Pch is set in the direction in which the remaining capacity (SOC) approaches the predetermined value Scon.
[0021]
Next, the battery power Pb is calculated from the product of the battery current i and the battery voltage V (step S104), and the calculated battery power Pb is set with a predetermined value α in the positive and negative directions from the charge / discharge request amount Pch. It is determined whether or not the charge / discharge amount is within an appropriate range (step S106). Here, the predetermined value α sets the dead zone. When the battery power Pb is within the appropriate charge / discharge amount range, the power generation request power Pst currently used is left as it is (step S108), and when the battery power Pb falls below the proper charge / discharge amount range, the power generation request power Pst is set to the predetermined power amount β. When the battery power Pb exceeds the charge / discharge amount appropriate range, the power generation request power Pst is decreased by the predetermined power amount β (step S112). Here, the predetermined power amount β is a step amount when changing the power generation required power Pst, and is determined by the performance of the starter MG13, the required reaction speed, the interval at which this torque control routine is repeated, and the like.
[0022]
When the power generation required power Pst is set in this way, a limit torque Tmin1 for preventing the belt 12 from slipping is set based on the rotational speed Ne of the engine 10 and the torque Te (step S114). Here, whether the belt 12 slips or not depends on the properties of the belt 12 and the power transmission state of the belt 12, and the power transmission state of the belt 12 depends on the rotational speed Ne, the torque Te, It is determined by the torque of the starter MG13. The limit torque Tmin1 for preventing the belt 12 from slipping is set as a limit of the power generation torque Tst * of the starter MG13, and thus can be set using the rotational speed Ne of the engine 10 and the torque Te. Therefore, it can be said that the rotational speed Ne and the torque Te of the engine 10 are elements that reflect the power transmission state of the belt 12. In the embodiment, the limit torque Tmin1 is set by determining the relationship between the rotational speed Ne of the engine 10 and the torque Te and the limit torque Tmin1 through experiments or the like and storing them in the ROM 34 in advance as a limit torque derivation map. When the number Ne and the torque Te are given, the corresponding limit torque Tmin1 is derived from the stored limit torque derivation map. FIG. 4 shows a tendency regarding the magnitudes of the rotational speed Ne, torque Te, and limit torque Tmin1 of the engine 10 in the limit torque derivation map. The limit torque derivation map is determined by the performance of the engine 10, the performance of the starter MG13, the properties of the belt 12, and the like.
[0023]
When the limit torque Tmin1 is set, the minimum rated torque Tmin2 is calculated from the rotation speed Nst of the starter MG13 and the battery voltage V (step S116). The minimum rated torque Tmin2 is determined by the manufacturer or the like according to the performance of the starter MG13. In the embodiment, the minimum rated torque Tmin2 is the minimum given as a relationship among the rotational speed Nst, the battery voltage V, and the minimum rated torque Tmin2 from the manufacturer of the starter MG13. The rated torque derivation map is stored in the ROM 34 in advance, and when the rotation speed Nst and the battery voltage V are given, the corresponding minimum rated torque Tmin2 is derived from the stored minimum rated torque derivation map.
[0024]
Next, the larger one of the set limit torque Tmin1 and the minimum rated torque Tmin2 is set as the lower limit guard value Tmin (step S118). In the embodiment, the limit torque Tmin1 and the minimum rated torque Tmin2 have negative values because they are power generation torques. Accordingly, in the processing of step S118, the larger of both, that is, the smaller of the absolute values is set as the lower limit guard value Tmin.
[0025]
Then, the power generation request torque Tst is calculated by the following equation (1) using the power generation request power Pst, the rotation speed Nst of the starter MG13 and the efficiency η set in steps S106 to S112 (step S120), and the power generation request torque is calculated. The lower limit guard value Tmin is selected by using the lower limit guard value Tmin, that is, the lower limit guard value Tmin is selected when the power generation request torque Tst is smaller than the lower limit guard value Tmin. The power generation torque command Tst * is selected and set (step S122), the starter MG13 is driven and controlled using this power generation torque command Tst * (step S124), and this routine is terminated.
[0026]
[Expression 1]
Tst = Pst / Nst / η (1)
[0027]
According to the generator motor control device 20 of the embodiment described above, the power generation torque command Tst * is set using the limit torque Tmin1 set so as not to cause the belt 12 to slip. Transmission of power to MG 13 can be performed more appropriately. As a result, the engine 10 and the starter MG13 can be operated efficiently. Moreover, since the power generation torque command Tst * is set using the minimum rated torque Tmin2 determined from the rated value of the starter MG13, an overload is not applied to the starter MG13. As a result, the durability of the belt 12 and the starter MG13 can be enhanced.
[0028]
In the generator motor control device 20 of the embodiment, the battery power Pb and the charge / discharge request amount Pch derived from the remaining capacity (SOC) of the battery 18 are compared with the power generation request power Pst, and the power supply request power Pst is increased or decreased by a predetermined power amount β. However, it is also possible to perform proportional control or integral control that increases or decreases the difference between the battery power Pb and the charge / discharge request amount Pch multiplied by the gain, or without performing the feedback control. Alternatively, the charge / discharge request amount Pch may be set as the power generation request power Pst as it is.
[0029]
In the generator motor control apparatus 20 of the embodiment, the larger of the limit torque Tmin1 and the minimum rated torque Tmin2 is set as the lower limit guard value Tmin, but the minimum rated torque Tmin2 is not calculated and the limit torque Tmin1 is used as it is. Tmin may be used as a lower limit guard for the required power generation torque Tst.
[0030]
In the generator motor control apparatus 20 of the embodiment, the starter MG 13 is configured as a generator motor and functions as a motor so that the engine 10 can be cranked. However, it functions only as a generator that generates power by the power from the engine 10. It does n’t matter what you do.
[0031]
In the generator motor control apparatus 20 of the embodiment, the belt 12 is used to transmit the power of the engine 10 to the starter MG13. However, since the power of the engine 10 may be transmitted to the starter MG13, for example, other than the belt 12 such as a chain. It is good also as a power transmission member.
[0032]
In the generator motor control apparatus 20 of the embodiment, the power of the engine 10 is output to the drive shaft 15 via the transmission 14, but may be applied to a power output apparatus 120 as shown in FIG. . In the illustrated power output apparatus 120, the same reference numerals are assigned to the same components as those in the embodiment. As shown in the figure, the power output device 120 includes an engine 10 whose operation is controlled by the engine ECU 16, a starter MG 13 attached to the crankshaft 11 of the engine 10 via a belt 12, and power generation whose driving is controlled by the motor ECU 149. The motor 140, the sun gear 131 connected to the crankshaft 11 of the engine 10, the ring gear 132 fixed to the case 139 by the brake B 1, and the two pinion gears 133 and 134 are held rotatably and revolved, and the motor 140 rotates. A planetary gear 130 including a carrier 135 to which a shaft 141 is connected, and an input shaft 151 that can be connected to the carrier 135 and the ring gear 132 by clutches C1 and C2 and controlled by the CVTECU 159. Comprising a CVT14B for outputting to the output shaft 152 to shift the power to be, and a hybrid electronic control unit 70 that controls the whole consists device mainly by CPU72 and ROM 74, RAM 76.
[0033]
The starter MG 13 can exchange electric power with the battery 18 through an inverter circuit 17 through an electric power line (not shown), and is driven and controlled by the hybrid electronic control unit 70 through the engine ECU 16. In addition, the motor 140 can exchange power with the battery 18 via the inverter circuit 143, and data relating to the state of the battery 18 such as the remaining capacity (SOC) is transmitted by the motor ECU 149 as necessary according to the electronic control unit 70 for the hybrid. Is output. The hybrid electronic control unit 70 controls driving of the clutch C1, the clutch C2, and the brake B1 through input / output ports and communication ports (not shown), and exchanges various control signals and data with the engine ECU 16, the motor ECU 149, and the CVTECU 159.
[0034]
In the power output device 120 configured as described above, the hybrid electronic control unit 70 outputs data related to the state of the battery 18 from the motor ECU 149 and outputs a switching control signal and the like to the inverter circuit 17 via the engine ECU 16. Since the MG 13 is driven and controlled, it can be said that it has the same function as the electronic control unit 30 of the embodiment. Therefore, when the hybrid electronic control unit 70 controls the starter MG13, the torque control routine shown in FIG. 2 can be applied as it is.
[0035]
Further, in a vehicle equipped with this power output device 120, when traveling backward when the remaining capacity (SOC) of the battery 18 is reduced, the clutch C1 is engaged, the clutch C2 is released, and the brake B1 is frictionally engaged to cause the ring gear 132 to engage. By limiting the rotation of the engine, the “engine friction mode” is selected in which the power of the engine 10 is output to the carrier 135 in the reverse direction. In this mode, in order to prevent wear due to frictional engagement of the brake B1, the engine 10 needs to be driven at a low speed and in a high torque region in consideration of the fact that the engine starts at a low speed. Even in such a case, the above-described torque control routine is effectively used.
[0036]
Next, another example of torque control of the starter MG 13 in the power output device 120 will be described. FIG. 6 is a flowchart showing an example of a torque control routine executed by the hybrid electronic control unit 70. This routine is repeatedly executed every predetermined time (for example, every 8 msec).
[0037]
When this torque control routine is executed, the CPU 72 of the hybrid electronic control unit 70 is first set from the battery current i, the battery voltage V, the engine speed Ne, the torque Te, the amount of depression of the accelerator pedal, and the like. Data necessary for control such as the target engine speed Ne * of the engine 10 and the remaining capacity (SOC) of the battery 18 is read (step S200), and the battery power Pb is calculated from the product of the battery current i and the battery voltage V (step S200). Then, based on the calculated battery power Pb, remaining capacity (SOC), and battery current i, power generation required power Ps is calculated (step S204). In the embodiment, the calculation of the required power generation power Ps is performed by setting the relationship among the battery power Pb, the remaining capacity (SOC), the battery current i, and the required power generation power Ps, and storing it in the ROM 74 in advance as a power generation required power derivation map. When the battery power Pb, the remaining capacity (SOC), and the battery current i are given, the corresponding power generation required power Ps is derived from the power generation required power derivation map.
[0038]
When the power generation request power Ps is obtained in this way, the power generation request torque Tst of the starter MG13 is calculated by the following equation (2) based on the power generation request power Ps (step S206). Here, in Expression (2), k is a ratio of pulleys attached to hang the belt 12 on the crankshaft 11 of the engine 10 and the rotation shaft of the starter MG13. In the embodiment, the target rotational speed Ne * of the engine 10 is used to calculate the required power generation torque Tst of the starter MG13. This is based on the premise that the engine 10 is controlled at the target rotational speed Ne *.
[0039]
[Expression 2]
Tst = Ps / (Ne * · k · 60 / 2π) (2)
[0040]
Next, the allowable generated power Pr of the starter MG13 based on the restriction of the belt 12 is calculated based on the rotational speed Ne of the engine 10 and the load of the engine 10 (step S208). In the embodiment, the calculation of the allowable generated power Pr is performed by obtaining the relationship between the rotational speed Ne of the engine 10 and the load and the allowable generated power Pr by experiments or simulations, and storing it in the ROM 74 in advance as an allowable generated power derivation map. When the rotation speed Ne and the load of the engine 10 are given, the corresponding allowable generated power Pr is derived from the allowable generated power deriving map. An example of the allowable generated power derivation map is shown in FIG. As shown in the figure, in the embodiment, the allowable generated power Pr is set to increase as the rotational speed Ne of the engine 10 increases, and to decrease as the load of the engine 10 increases. Since the load of the engine 10 is equal to the torque Te if the rotational speed Ne is the same, the allowable generated power derivation map can also be expressed using the torque Te instead of the load. As described above, the rotation speed Ne and the torque Te of the engine 10 can be considered as elements that reflect the power transmission state of the belt 12, and therefore the rotation speed Ne and the load of the engine 10 also reflect the power transmission state of the belt 12. It can be said that it is an element to do. Therefore, it can be said that the allowable generated power Pr is determined based on the transmission state of the power of the belt 12. In this power output device 120, the control device 20 of the generator motor is used by obtaining the relationship between the power transmission state of the belt 12 and the limit torque Tmin1 from the viewpoint of whether or not the belt 12 slips. The relationship between the power transmission state of the belt 12 and the allowable generated power Pr was determined and used from the viewpoint of whether slippage or breakage occurred from the vibration simulation of the belt 12.
[0041]
When the allowable power generation power Pr is thus obtained, the power generation allowable torque Tr of the starter MG13 is calculated by the following equation (3) based on the allowable power generation power Pr (step S210). Here, in equation (3), k is the ratio of pulleys as in equation (2). In the embodiment, the rotational speed Ne of the engine 10 is used to calculate the power generation allowable torque Tr of the starter MG13. This is because the belt 12 can be more reliably adapted to the constraints of the belt 12 than when the target rotational speed Ne * is used.
[0042]
[Equation 3]
Tr = Pr / (Ne · k · 60 / 2π) (3)
[0043]
Then, the calculated power generation request torque Tst and the power generation allowable torque Tr are compared, and the smaller one is set as the power generation torque command Tst * (step S212), and the starter MG13 is controlled to be driven by the set power generation torque command Tst *. (Step S214), and this routine is finished. The setting process of the power generation torque command Tst * in step S212 is a process of limiting the power generation request torque Tst obtained as the power generation request with the power generation allowable torque Tr.
[0044]
According to the power output device 120 described above, the power generation request torque Tst is limited by the power generation allowable torque Tr calculated from the allowable power generation Pr in a range where the belt 12 does not slip or break, and the power generation torque command Tst * is set. Therefore, power transmission from the engine 10 to the starter MG 13 by the belt 12 can be performed more appropriately. As a result, the engine 10 and the starter MG13 can be operated efficiently.
[0045]
Also in the power output device 120 of the embodiment, the starter MG13 is configured as a generator motor and the engine 10 can be cranked by functioning as a motor. However, the power output device 120 functions only as a generator that generates power by the power from the engine 10. It does not matter.
[0046]
Also in the power output device 120 of the embodiment, the belt 12 is used to transmit the power of the engine 10 to the starter MG13. However, since the power of the engine 10 may be transmitted to the starter MG13, for example, power other than the belt 12 such as a chain. A transmission member may be used.
[0047]
The embodiments of the present invention have been described using the embodiments. However, the present invention is not limited to these embodiments, and can be implemented in various forms without departing from the gist of the present invention. Of course you get.
[Brief description of the drawings]
FIG. 1 is a configuration diagram showing an outline of a configuration of a generator motor control device 20 as an embodiment of the present invention;
2 is a flowchart showing an example of a torque control routine executed by the electronic control unit 30. FIG.
FIG. 3 is an explanatory diagram showing an example of a required charge / discharge amount derivation map.
FIG. 4 is an explanatory diagram showing trends regarding the magnitudes of the rotational speed Ne, torque Te, and limit torque Tmin1 of the engine 10 in the limit torque derivation map.
FIG. 5 is a configuration diagram showing an outline of a configuration of a power output device 120 including a modification of the generator motor control device 20 of the embodiment.
FIG. 6 is a flowchart showing an example of a torque control routine executed by the hybrid electronic control unit 70;
FIG. 7 is an explanatory diagram showing an example of an allowable generated power derivation map.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Engine, 11 Crankshaft, 12 Belt, 13 Starter motor generator (starter MG), 14 Transmission, 15 Drive shaft, 16 Engine electronic control unit (engine ECU), 17 Inverter circuit, 18 Battery, 20 Control of generator motor Device, 30 Electronic control unit, 32 CPU, 34 ROM, 36 RAM, 40 Speed sensor, 42 Voltage sensor, 44 Current sensor, 46 Temperature sensor, 70 Hybrid electronic control unit, 72 CPU, 74 ROM, 76 RAM, 120 Power output device, 130 planetary gear, 131 sun gear, 132 ring gear, 133, 134 pinion gear, 135 carrier, 139 case, 140 motor, 141 rotating shaft, 143 inverter circuit, 149 motor ECU, 151 input Shaft, 152 output shaft, 159 CVTECU, C1, C2 clutch, B1 brake.

Claims (3)

A control device for a generator that generates electric power by the power of an internal combustion engine transmitted through a power transmission member,
The larger the number of revolutions of the internal combustion engine is, the larger the rotational speed of the internal combustion engine is based on the properties and / or power transmission state of the power transmission member with respect to the required power generation torque set based on the remaining capacity of the secondary battery that can be charged by the generator. The power generation is performed by limiting with a lower limit guard value which is set to a larger one of a limit torque and a rated torque of the generator which are set to tend to be limited as the output torque of the internal combustion engine decreases. Power generation torque setting means for setting the power generation torque of the machine ,
Control means for driving and controlling the generator using the set power generation torque;
A generator control device comprising: The generator control device according to claim 1 ,
The power transmission member is a belt hung on an output shaft of the internal combustion engine and a rotating shaft of the generator,
The power generation torque setting means is a means for setting the power generation torque so that belt slip does not occur based on the property and / or power transmission state of the belt as the power transmission member. 3. The generator control device according to claim 1, wherein the generator is a generator motor that can start the internal combustion engine by power that is supplied through the power transmission member when power is supplied.