JP2010081741A - Generator/motor controller and vehicle system equipped with the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a generator/motor controller increasing a power generation amount at the time of regeneration and preventing generator/motor damage due to overheating. <P>SOLUTION: The generator/motor controller is provided with: an inverter part and a field excitation part. The inverter part controls the generator/motor in a driving mode driving an internal combustion engine with power supplied from a power supply device for starting the internal combustion engine, in a power generation mode supplying power generated at the time of normal driving to the power supply device, and in a regenerative power generation mode for performing regenerative power generation when the vehicle decelerates and performing orthogonal conversion between the power supply device and the generator/motor. The field excitation part controls the field current of the generator/motor. In the regenerative power generation mode, the field current of the generator/motor is set to be identical to the maximum value in the driving mode, which exceeds the maximum value of the field current in the power generation mode, when the regenerative power generation is started. Then, the temperatures of respective parts of the generator/motor and the generator/motor controller are measured. When at least one of the measured temperatures in the respective parts exceeds a previously decided threshold, the field current is lowered. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a generator motor controller that controls a generator motor having a shaft connected to an internal combustion engine, and a vehicle system including the generator motor controller.

  Conventionally, for the purpose of improving the fuel efficiency of a vehicle, it has been proposed to increase the power generation amount of a generator motor and recover the deceleration energy when the vehicle is decelerated. In one of the proposals, the automatic transmission is locked up when the vehicle is decelerated, and then the amount of power generated by the generator motor is increased more than usual in a state where the fuel cut is performed (for example, patents) Reference 1). In another proposal, the pumping loss of the engine is controlled by operating the throttle valve of the engine at the time of regenerative power generation of the generator motor, and the deceleration of the vehicle due to the increase in the torque of the power generation device at the time of regenerative power generation is controlled (for example, , See Patent Document 2).

Japanese Patent Application Laid-Open No. 7-310566 JP-A-11-107805

  However, in the above-mentioned proposal, the amount of power generation is increased in a state where the cooling performance of the generator motor is reduced due to deceleration by increasing the amount of power generation compared with steady power generation at the time of deceleration. There is a problem of exceeding the temperature.

  An object of the present invention is to provide a generator motor control device capable of increasing the amount of power generation during regeneration and preventing damage to the generator motor due to overheating, and a vehicle system including the same.

  The generator motor control device according to the present invention includes a drive mode in which a rotating shaft connected to an internal combustion engine is rotated by electric power supplied from an electric power supply device to start the internal combustion engine, and the rotating shaft is rotated by the internal combustion engine. In the generator motor control device that controls the generator motor in a power generation mode for supplying the power generated by the operation to the power supply device and a regenerative power generation mode for performing regenerative power generation when the vehicle decelerates, the power supply device and the generator motor In the regenerative power generation mode, when starting regenerative power generation, the field current of the generator motor is provided. Is the same as the maximum value in the drive mode that exceeds the maximum value of the field current in the power generation mode, and then the temperature of the generator motor and each part of itself is measured. To, if at least one of the temperature of each part exceeding the threshold value predetermined, lower the field current.

  The effect of the generator motor control device according to the present invention is that the regenerative power generation time is short and it is possible to carry out power generation above the continuous rating, so that the field current flows more than the continuous rating during regenerative power generation. Therefore, it is possible to increase the amount of power generation and efficiently regenerate, improving the fuel efficiency of the vehicle. In the generator motor, the field current in the drive mode for starting the internal combustion engine that needs to generate high torque in a short time is the upper limit value, so the upper limit value of the field current during regeneration is the field current in the drive mode. By doing so, it is possible to set the field current and the power generation output within a range where the generator motor does not fail. It is possible to prevent the generator motor from being damaged by making a determination based on a threshold value that allows for a temperature rise during regenerative power generation.

Embodiment 1 FIG.
1 is a cross-sectional view of a generator motor to which a generator motor control apparatus according to Embodiment 1 of the present invention is attached. FIG. 2 is a schematic configuration diagram of the vehicle system according to Embodiment 1 of the present invention.
In addition, in Embodiment 1 of this invention, the generator motor 1 and the generator motor control apparatus 101 are comprised integrally, However, You may isolate | separate.
The vehicle system according to Embodiment 1 of the present invention includes an internal combustion engine (not shown), a generator motor 1 to which the internal combustion engine is connected, a generator motor control device 101 that controls the generator motor 1, and power transfer between the generator motor 1. Power supply device 16 for performing vehicle operation, vehicle control device 102 for controlling the vehicle system, and vehicle information acquisition device group 103 for acquiring information on the vehicle system. The power supply device 16 includes a power storage device 161 such as a battery.

A generator motor 1 according to Embodiment 1 of the present invention includes a field winding 2 and a rotor 4 having a field iron core 3 covering the field winding 2, and a housing 7 that rotatably holds the rotor 4. 8, a stator 6 provided to cover the rotor 4 and having an armature winding 5, and a pulley 12 connected to an internal combustion engine (not shown) via a belt (not shown) and attached to an end of the rotor 4. And a slip ring 13 connected to the field winding 2 and attached to the other end of the rotor 4, and a brush holder 15 that holds a brush 14 that slides on the slip ring 13.
Since the internal combustion engine and the generator motor 1 are connected by a belt, power can be exchanged with each other.
The vehicle information acquisition device group 103 includes a rotation speed of the rotor 4, an armature current of the armature winding 5, a field current of the field winding 2, each part of the generator motor 1, and each part of the generator motor control device 101. A sensor for measuring temperature is included.

A generator motor control apparatus 101 according to Embodiment 1 of the present invention is connected to an armature winding 5 to supply an armature current, and to a field winding 2 to be connected to a field winding 2 to supply a field current. And a control circuit unit 10 that controls the operation of the generator motor 1.
The power circuit unit 9 includes an upper arm switching element and a lower arm switching element connected to each phase of the armature winding 5. Then, the power is bidirectionally converted between the generator motor 1 and the power supply device 16 by controlling the switching element.
The field current control unit 11 includes a switching circuit 17 connected to the field winding 2 of the rotor 4 and a regulator circuit 19 including a free wheel diode 18, and the switching element 17 is based on a command from the control circuit unit 10. Is controlled on and off to control the field current flowing in the field winding 2 to control the power generation amount and drive torque of the generator motor 1.

  The control circuit unit 10 controls the generator motor 1 in three modes based on vehicle information input from the vehicle control device 102. The three modes are a driving mode in which a rotating shaft connected to the internal combustion engine is rotated by electric power supplied from the power supply device 16 to start the internal combustion engine, and rotation by the internal combustion engine when the vehicle is constant speed or acceleration. There are a power generation mode in which power generated by rotating the shaft is supplied to the power supply device 16 and a regenerative power generation mode in which regenerative power generation is performed when the vehicle decelerates.

In the control circuit unit 10, an upper limit value of the field current that can be passed in the control in the drive mode and the power generation mode is set for each mode. The upper limit value in the drive mode is a large value for starting the internal combustion engine in a short time. On the contrary, the upper limit value in the power generation mode always generates power during steady running, so it is considerably higher than the upper limit value in the drive mode. Small value.
The control circuit unit 10 employs the upper limit value in the drive mode as the upper limit value of the field current in the regenerative power generation mode.

  The control circuit unit 10 includes the measured generator motor 1 and generator motor controller so that each part of the generator motor 1 and generator motor controller 101 is not overheated and damaged when generating power in the power generation mode and regenerative generator mode. An allowable temperature to be compared with the temperature of each part 101 is set for each part. The control circuit unit 10 reduces the field current when the measured temperature of each part of the generator motor 1 and the generator motor control device 101 exceeds the allowable temperature to reduce each field of the generator motor 1 and the generator motor control apparatus 101. Reduce the field current so that the temperature of is less than the allowable temperature.

Next, a procedure for controlling the generator motor 1 will be described. FIG. 3 is a flowchart showing a regenerative power generation control routine executed by the generator motor control apparatus 101 according to the first embodiment of the present invention.
The vehicle control device 102 detects the load and running state of the vehicle and instructs the generator motor control device 101 about the control mode of the generator motor 1. When starting the internal combustion engine, the drive mode is instructed. When it is detected that the vehicle is in a steady running state, the power generation mode is instructed. When it is detected that the vehicle is decelerating, the regenerative power generation mode is instructed.
In addition, since the control in the generator motor control apparatus 101 when receiving the instruction of the drive mode and the power generation mode is general, the description thereof is omitted.

When an instruction for the regenerative power generation mode is received, the regenerative power generation control routine is started. In the regenerative power generation mode, control in the power generation mode is performed before that.
In step 101, the control is switched from the power generation mode to the regenerative power generation mode.
In step 102, the upper limit value that can flow as the field current is changed from the upper limit value in the power generation mode to the upper limit value in the drive mode.
In step 103, the temperature of each part of the generator motor 1 and the generator motor control device 101 and the rotation speed of the generator motor 1 are acquired from the vehicle information acquisition device group 103.
In step 104, the field current is determined from the temperature of each part of the generator motor 1 and the generator motor control device 101 and the rotational speed of the generator motor 1, and the field current control unit 11 is controlled to determine the field value. Control the magnetic current.

In step 105, it is determined whether or not an instruction for the regenerative power generation mode is input from the vehicle control device 102. When no instruction for the regenerative power generation mode is input, the regenerative power generation control routine is terminated, and the instruction for the regenerative power generation mode is received. When it is input, the process proceeds to step 106.
In step 106, it is determined whether or not the temperature of each part of the generator motor 1 and the generator motor control device 101 is equal to or lower than the allowable temperature. When the temperature of all the parts is equal to or lower than the allowable temperature, the process returns to step 105, When the temperature exceeds the allowable temperature, the routine proceeds to step 107.
In step 107, the field current is determined so that the temperatures of all parts of the generator motor 1 and the generator motor control device 101 are equal to or lower than the allowable temperature, and the field current control unit 11 is controlled to set the field current to the determined value. Control the current and return to step 105.

Thus, since regenerative power generation is performed so that the temperatures of all parts of the generator motor 1 and the generator motor control device 101 are maintained below the allowable temperature, damage to the generator motor 1 and the generator motor control device 101 due to overheating can be prevented. .
Further, in regenerative power generation, if the temperature of all parts of the generator motor 1 and the generator motor control device 101 is equal to or lower than the allowable temperature, the field current can be increased to an upper limit value larger than the upper limit value in the power generation mode. More power can be generated than when power is generated in the power generation mode, and deceleration energy can be regenerated more effectively.
Moreover, since the upper limit value of the field current that can be passed to the generator motor 1 is the upper limit value that can be passed in the drive mode in which a large torque needs to be generated in a short time, the upper limit value that can be passed in the drive mode for regenerative power generation Even if the field current of 1 is supplied, the temperature of each part of the generator motor 1 and the generator motor control device 101 does not exceed the allowable temperature.

In addition, since the generator motor control device 101 notifies the vehicle control device 102 of the reduced power generation amount, the vehicle control device 102 can accurately calculate the total amount of regenerative power generation, and the decrease in power generation amount is not a malfunction but as a normal operation. Judgment can be made.
Also, the deceleration time is shorter than the time during steady operation, and the field current flowing during regenerative power generation is made larger than the field current flowing during power generation during steady operation to increase the amount of power generation. However, regenerative power generation can be carried out more effectively without any problems.

Note that the allowable temperature may be set in anticipation of a temperature increase until the end of regenerative power generation, and by doing so, the generator motor 1 and the generator motor control device 101 can be more reliably protected.
Moreover, although the allowable temperature set to each part of the generator motor 1 and the generator motor control device 101 is one, it may be changed between the power generation mode and the regenerative power generation mode. At this time, the allowable temperature in the regenerative power generation mode is set lower than that in the power generation mode. In the regenerative power generation mode, a large amount of field current is supplied to increase the amount of power generation. However, since the vehicle decelerates, the cooling performance of each part decreases, and thus the temperature rise value increases. Therefore, each part can be protected more reliably by making the allowable temperature lower than that in the power generation mode.

Embodiment 2. FIG.
FIG. 4 is a schematic configuration diagram of a vehicle system according to Embodiment 2 of the present invention. FIG. 5 is a flowchart showing the procedure of the regenerative power generation control routine executed by the generator motor control apparatus 101B according to Embodiment 2 of the present invention.
In the generator motor control apparatus 101 according to the first embodiment of the present invention, the field current in the regenerative power generation mode is rapidly increased to the determined field current, but the generator motor control according to the second embodiment of the present invention is performed. The apparatus 101B is different in that it increases at a predetermined rate of change when increasing to the determined field current, and is otherwise the same, so the same parts are denoted by the same reference numerals and description thereof is omitted.

The vehicle control device 102B according to the second embodiment of the present invention detects the load and running state of the vehicle and instructs the generator motor control device 101 of the control mode of the generator motor 1. When starting the internal combustion engine, the drive mode is instructed. Further, when it is detected that the vehicle is in a steady running state, the power generation mode is instructed. Further, when it is detected that the vehicle is decelerating, a deceleration is obtained, and a regenerative power generation mode instruction and a deceleration notification are sent to the generator motor control device 101B.
In addition, since the control by the generator motor control device 101B when receiving the instruction of the drive mode and the power generation mode is general, the description is omitted.

When an instruction for the regenerative power generation mode is received from the vehicle control device 102, the regenerative power generation control routine is started. In the regenerative power generation mode, control in the power generation mode is performed before that.
In step 201, the control is switched from the power generation mode to the regenerative power generation mode.
In step 202, the upper limit value that can flow as the field current is changed from the upper limit value in the power generation mode to the upper limit value in the drive mode.
In step 203, the temperature of each part of the generator motor 1 and the generator motor control device 101 </ b> B and the rotation speed of the generator motor 1 are acquired from the vehicle information acquisition device group 103.
In step 204, a field current is determined from the temperature of each part of the generator motor 1 and the generator motor control device 101B and the rotational speed of the generator motor 1.
In step 205, the field change rate is obtained from the deceleration, the field current at the start of control is determined from the previously determined field current and field change rate, and determined by controlling the field current control unit 11. The field current is controlled to be a value.

In step 206, it is determined whether or not an instruction for the regenerative power generation mode is input from the vehicle control device 102B. When the instruction for the regenerative power generation mode is not input, the regenerative power generation control routine is terminated, and the instruction for the regenerative power generation mode is issued. When it is input, the process proceeds to step 207.
In Step 207, it is determined whether or not the temperature of each part of the generator motor 1 and the generator motor control device 101B is equal to or lower than the allowable temperature. When the temperature of all the parts is equal to or lower than the allowable temperature, the process proceeds to Step 208, When the temperature exceeds the allowable temperature, the process proceeds to step 209.
In step 208, a new field current is determined from the current field current and the field change rate, and the field current is controlled so as to be a value determined by controlling the field current control unit 11, and the process proceeds to step 206. Return.
In step 209, the field current is determined so that the temperature of all parts of the generator motor 1 and the generator motor control device 101B is equal to or lower than the allowable temperature, and the field current control unit 11 is controlled so as to have the determined value. Then, the field current is controlled to return to step 206.

  If the field current is suddenly increased at the same time as the deceleration starts, the torque of the generator motor 1 increases abruptly and the ride comfort deteriorates. On the other hand, like the generator motor control device 101B according to Embodiment 2 of the present invention, the amount of power generated by the generator motor 1 can be reduced without causing a sense of incongruity by changing the field current at a predetermined rate of change according to the deceleration of the vehicle. Can be increased.

Embodiment 3 FIG.
FIG. 6 is a schematic configuration diagram of a vehicle system according to Embodiment 3 of the present invention. FIG. 7 is a flowchart showing the procedure of the regenerative power generation control routine executed by the generator motor control apparatus 101C according to the third embodiment of the present invention.
The vehicle control device 102C according to the third embodiment of the present invention detects the load and running state of the vehicle and instructs the generator motor control device 101C of the control mode of the generator motor 1. When starting the internal combustion engine, the drive mode is instructed. Further, when it is detected that the vehicle is in a steady running state, the power generation mode is instructed. Also, when it is detected that the vehicle is decelerating, the deceleration and regenerative power generation time are obtained to instruct the regenerative power generation mode, the deceleration is obtained, and the braking force required for the vehicle, information on the route being traveled , Renewable power generation time is notified from traffic information such as traffic jams and traffic lights.
Further, the vehicle control apparatus 102C determines whether or not to perform idling stop due to traffic jam or waiting for a signal from the traffic information, and estimates the stop time when the idling stop is performed from the traffic information when it is determined to perform idling stop. Then, the generator motor control device 101C is notified of the estimated stoppage time during which the idling stop is performed.
In addition, since the control by the generator motor control device 101C when receiving the instruction of the drive mode and the power generation mode is general, the description is omitted.

When an instruction for the regenerative power generation mode is received from the vehicle control apparatus 102C, the regenerative power generation control routine is started. In the regenerative power generation mode, control in the power generation mode is performed before that.
In step 301, control is switched from the power generation mode to the regenerative power generation mode.
In step 302, the upper limit value that can flow as the field current is changed from the upper limit value in the power generation mode to the upper limit value in the drive mode.
In step 303, the temperature of each part of the generator motor 1 and the generator motor control device 101 </ b> C and the rotation speed of the generator motor 1 are acquired from the vehicle information acquisition device group 103.
In step 304, the maximum temperature of each part during regenerative power generation is estimated from the temperature of each part of the generator motor 1 and the generator motor control device 101C and the regenerative power generation possible time, and the estimated maximum temperature of at least one part is the allowable temperature. The field current is determined from the rotational speed of the generator motor 1 so as to be as follows.
In step 305, the field change rate is obtained from the deceleration, the field current at the start of regenerative power generation is determined from the previously determined field current and field change rate, and determined by controlling the field current control unit 11. The field current is controlled so as to be the value obtained.

In step 306, it is determined whether or not an instruction for the regenerative power generation mode is input from the vehicle control apparatus 102C. When the instruction for the regenerative power generation mode is not input, the regenerative power generation control routine is terminated, and the instruction for the regenerative power generation mode is issued. When it is input, the process proceeds to step 307.
In step 307, it is determined whether or not the stop time is zero. If the stop time is not zero, the process proceeds to step 308. If the stop time is zero, the process proceeds to step 309.
In step 308, the allowable temperature is reset based on the stoppage time during which idling is stopped, and the process proceeds to step 309.
In step 309, it is determined whether or not the temperature of each part of the generator motor 1 and the generator motor control device 101C is equal to or lower than the allowable temperature. When the temperature of all parts is equal to or lower than the allowable temperature, the process proceeds to step 310, When the temperature exceeds the allowable temperature, the process proceeds to step 311.
In step 310, a new field current is determined from the current field current and the field change rate, and the field current is controlled to be a value determined by controlling the field current control unit 11, and the process proceeds to step 306. Return.
In step 311, the field current is determined so that the temperature of all parts of the generator motor 1 and the generator motor control device 101 </ b> C is equal to or lower than the allowable temperature, and the field current control unit 11 is controlled so as to have the determined value. Then, the field current is controlled to return to step 306.

  Since the internal combustion engine rotates in the power generation mode and the generator motor 1 also rotates accordingly, the amount of heat generated by power generation is dissipated, but in the regenerative power generation mode, the rotation of the internal combustion engine slows down due to deceleration, and accordingly the generator motor 1 Since the rotation of the motor also becomes slower, the cooling performance is lowered. Therefore, the amount of heat generated by regenerative power generation is calculated using the field current as a parameter, and the temperature of each part is estimated in consideration of the decrease in cooling performance of each part. The estimated temperature of each part is below the allowable temperature. By determining a large field current, it is possible to reliably protect the generator motor 1 and the generator motor control device 101C. As a result, the maximum amount of regenerative power generation can be secured while protecting the generator motor 1 and the generator motor control device 101C.

  When the generator motor 1 is rotating, each part is cooled by a fan provided in the rotor 4. In general, in the generator motor 1, the temperature of the stator 6 through which a large current flows is the highest. When idling is stopped, the internal combustion engine is stopped, so that the fan is stopped and the generator motor 1 and the generator motor control device 101C cannot be cooled. For this reason, heat moves so that the whole temperature becomes uniform. Generally, the temperature of parts other than the stator 6 rises due to heat received from the stator 6. And there exists a site | part with low allowable temperature in the site | part where temperature rises, and the temperature of the site | part may exceed allowable temperature. Here, by estimating the stop time when idling stop is performed in advance, the temperature change of each part during idling stop is estimated, and the immediately preceding regenerative power generation is performed so that the changing temperature does not exceed the allowable temperature. To control. As a result, the temperature deterioration of each part can be prevented more reliably.

Embodiment 4 FIG.
FIG. 8 is a schematic configuration diagram of a vehicle system according to Embodiment 4 of the present invention.
The vehicle system according to Embodiment 4 of the present invention is different from the vehicle system according to Embodiment 1 of the present invention in the power supply device 16D, and is otherwise the same. The description is omitted.
The power supply device 16D according to the fourth embodiment of the present invention is different from the power supply device 16 according to the first embodiment of the present invention in that a regenerative power charging dedicated power storage device 162 is added. Therefore, the same reference numerals are attached to the same parts, and the description is omitted. That is, the power supply device 16D according to the fourth embodiment of the present invention includes the power storage device 161 used during normal operation and the regenerative power charging dedicated power storage device 162 that stores power during regenerative power generation.
Switching elements 171 and 172 are interposed between the power storage device 161, the regenerative power charging dedicated power storage device 162, and the power circuit unit 9, respectively. The switching elements 171 and 172 are ON / OFF controlled by the vehicle control device 102D.

  In the vehicle system according to Embodiment 4 of the present invention, the amount of electric power generated is not large during normal operation, that is, when controlling in the power generation mode, so that a general power storage device 161 having an electric power receiving performance, for example, an ordinary battery Charge the generated power. On the other hand, when controlling in the regenerative power generation mode during deceleration, in order to regenerate more power as electric power than during normal operation, the field current of the generator motor 1 is increased to increase the amount of power generation. Therefore, the regenerative power charging dedicated power storage device 162 is preferably a power storage device that can accept a large amount of power, that is, has a high power density at the time of charging, such as a capacitor.

The vehicle control device 102D according to the fourth embodiment of the present invention detects the load and running state of the vehicle, instructs the generator motor control device 101 about the control mode of the generator motor 1, and stores the power storage device 161 of the power supply device 16D. Alternatively, the regenerative power charging dedicated power storage device 162 is selected. When starting the internal combustion engine after stopping for a predetermined time or longer, the drive mode is instructed and the switching element 171 is turned on to select the power storage device 161. In addition, when starting the internal combustion engine after stopping for less than a predetermined time, an instruction for the drive mode is given and the switching element 172 is turned on to select the regenerative power charging dedicated power storage device 162. When it is detected that the vehicle is in a steady running state, the power generation mode is instructed and the switching element 171 is turned on to select the power storage device 161. When it is detected that the vehicle is decelerating, the regenerative power generation mode is instructed and the switching element 172 is turned on to select the regenerative power charging power storage device 162.
In addition, since the control in the generator motor control apparatus 101 when receiving the instruction of the drive mode and the power generation mode is general, the description thereof is omitted.

In the fourth embodiment of the present invention, the regenerative power can be reliably recovered by providing the regenerative power charging dedicated power storage device 162 having a large power receiving performance.
In addition, since the electric power stored during regenerative power generation is used after stopping in a short time, such as restart after the end of idling stop, it is possible to secure a capacity for receiving the electric power regenerated during the next deceleration, The power generated by regenerative power generation can be reliably recovered.

Embodiment 5 FIG.
FIG. 9 is a schematic configuration diagram of a vehicle system according to Embodiment 5 of the present invention.
The vehicle system according to Embodiment 5 of the present invention is different from the vehicle system according to Embodiment 4 of the present invention in that the power supply device 16E is the same, and the other parts are the same. The description is omitted.
In power supply device 16E according to Embodiment 5 of the present invention, charging circuit 20 for transferring power from regenerative power charging dedicated power storage device 162 to power storage device 161 is added to power supply device 16D according to Embodiment 4 of the present invention. Since the other points are the same, the same parts are denoted by the same reference numerals and the description thereof is omitted. The charging circuit 20 is controlled by the vehicle control device 102E.

  The vehicle control device 102E according to the fifth embodiment of the present invention detects the load and running state of the vehicle, instructs the generator motor control device 101 about the control mode of the generator motor 1, and stores the power storage device 161 of the power supply device 16. Alternatively, the regenerative power charging dedicated power storage device 162 is selected. When starting the internal combustion engine after stopping for a predetermined time or longer, the drive mode is instructed and the switching element 171 is turned on to select the power storage device 161. In addition, when starting the internal combustion engine after stopping for less than a predetermined time, an instruction for the drive mode is given and the switching element 172 is turned on to select the regenerative power charging dedicated power storage device 162. When it is detected that the vehicle is in a steady running state, the power generation mode is instructed and the switching element 171 is turned on to select the power storage device 161. When it is detected that the vehicle is decelerating, the regenerative power generation mode is instructed and the switching element 172 is turned on to select the regenerative power charging power storage device 162. When it is detected that the vehicle has stopped for a predetermined time or longer, the charging circuit 20 is controlled to transfer power from the regenerative power charging dedicated power storage device 162 to the power storage device 161.

In the vehicle system according to Embodiment 5 of the present invention, the regenerative power charging dedicated power storage device 162 with good power receiving performance is not good at storing power for a long time because the self-discharge is large. After parking, that is, after stopping for a predetermined time or longer, the power stored in the regenerative power charging dedicated power storage device 162 is charged to the power storage device 161 that is normally used, so that loss of power during the parking period can be reduced. it can.
In addition, although it takes a cost to achieve both a good power receiving performance and a small self-discharge with a single power storage device, the cost of the vehicle can be reduced by sharing the role.

It is sectional drawing which shows the structure of the generator motor which concerns on Embodiment 1 of this invention. 1 is a schematic configuration diagram of a vehicle system according to Embodiment 1 of the present invention. It is a flowchart which shows the procedure of the regenerative electric power generation control routine performed with the generator motor control apparatus which concerns on Embodiment 1 of this invention. It is a schematic block diagram of the vehicle system which concerns on Embodiment 2 of this invention. It is a flowchart which shows the routine of regenerative power generation control in the generator motor control apparatus which concerns on Embodiment 2 of this invention. It is a schematic block diagram of the vehicle system which concerns on Embodiment 3 of this invention. It is a flowchart which shows the routine of regenerative power generation control in the generator motor control apparatus which concerns on Embodiment 3 of this invention. It is a schematic block diagram of the vehicle system which concerns on Embodiment 4 of this invention. It is a schematic block diagram of the vehicle system which concerns on Embodiment 5 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Generator motor, 2 Field winding, 3 Field iron core, 4 Rotor, 5 Armature winding, 6 Stator, 7, 8 Housing, 9 Power circuit part, 10 Control circuit part, 11 Field current control part , 12 pulley, 13 slip ring, 14 brush, 15 brush holder, 16, 16D, 16E power supply device, 17 switching element, 18 reflux diode, 19 regulator circuit, 20 charging circuit, 101, 101B, 101C generator motor control device, 102, 102B, 102C, 102D, 102E Vehicle control device, 103 Vehicle information acquisition device group, 161 Power storage device, 162 Regenerative power charge dedicated power storage device, 171 and 172 Switching elements.

Claims (8)

A drive mode for rotating a rotating shaft connected to the internal combustion engine with electric power supplied from an electric power supply device for starting the internal combustion engine, and an electric power supply device for generating electric power by rotating the rotary shaft by the internal combustion engine In a generator motor control device for controlling a generator motor having a power generation mode to be supplied to and a regenerative power generation mode for performing regenerative power generation when the vehicle decelerates,
An inverter unit that performs orthogonal transformation bidirectionally between the power supply device and the generator motor; and a field current control unit that controls a field current of the generator motor,
In the regenerative power generation mode, when starting regenerative power generation, the field current of the generator motor is the same as the upper limit value in the drive mode exceeding the upper limit value of the field current in the power generation mode, and then the generator motor and A generator motor control device that measures the temperature of each part of itself and reduces the field current when at least one of the temperatures of each part exceeds a predetermined allowable temperature.   The generator motor control device according to claim 1, wherein a rate of change for increasing the field current when regenerative power generation is started is determined in accordance with a deceleration required for the vehicle. In the power generation mode, the temperature of each part of the generator motor and itself is measured, and when at least one of the temperatures of each part exceeds a predetermined allowable temperature of each part, the field current is lowered,
3. The generator motor control device according to claim 1, wherein an allowable temperature in the power generation mode for each part is different from an allowable temperature in the regenerative power generation mode.   Regenerative power generation time is estimated from the vehicle speed, the braking force required for the vehicle, road information and traffic information outside the vehicle, and the regenerative power generation time from the temperature of the generator motor and the respective parts of itself. 2. The generator motor control device according to claim 1, wherein the field current is determined so as not to exceed an allowable temperature of each part according to the amount of heat generated therein.   In a vehicle that performs idling stop, the stop time of the vehicle is predicted from road information and traffic information outside the vehicle, the temperature change of each part of the generator motor and its own part during the stop is estimated, and the allowable temperature of each part by the temperature change The generator motor control device according to any one of claims 1 to 4, wherein the amount of heat at the time of regeneration is limited so as not to exceed.   A vehicle system comprising the generator motor control device, the generator motor, and the power supply device according to claim 1. The power supply device includes a regenerative power charging dedicated power storage device,
The generator motor control device preferentially charges power generated in the regenerative power generation mode to the regenerative power charging dedicated power storage device, and in the immediately following drive mode, power is preferentially supplied from the regenerative power charging power storage device. The vehicle system according to claim 6, wherein the vehicle system is supplied to a generator motor.   The generator motor control device charges the regenerative power charging power storage device from the regenerative power charging dedicated power storage device to another power storage device until the amount of charge of the regenerative power charging dedicated power storage device becomes zero or the amount of power required for the next start of the internal combustion engine after the vehicle stops. The vehicle system according to claim 6 or 7, characterized in that:

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