JP2020202675A - Power supply device and control method thereof - Google Patents

Abstract

To provide a power supply device that can apply a low-cost, low-precision sensor as a sensor that measures signals to grasp the phase of a generator, and controls the phase of the inverter so as to generate maximum power at a constant voltage while eliminating the need for a DC current sensor.SOLUTION: A control unit CNT of a power supply device determines the phase adjustment direction (retard angle, advance angle) and phase adjustment amount (step length) of the phase of the next inverter on the basis of a relationship between the current output voltage output in the phase of the current inverter and a target voltage, and a relationship between the phase of the current output voltage and the previous inverter, and performs the phase control of the inverter at the next phase adjusted by the phase adjustment amount and the determined phase adjustment direction.SELECTED DRAWING: Figure 1

Description

The present invention relates to a power supply device and a method for controlling the power supply device.

Conventionally, in charging using a three-phase generator, a power supply device that charges a three-phase full bridge circuit by performing phase control and AC-DC conversion is known (see, for example, Patent Document 1).

Such a conventional power supply device has, for example, the characteristics shown in FIG. 3, and by utilizing these characteristics, the three-phase alternating current output from the three-phase generator is converted into direct current to a constant voltage. can do.

As the environment used as a product, it is often used in the relationship of generated power ≥ required load, as in the required load A (FIG. 3).

However, as in the required load B, it may be used in the relationship of generated power <required load.

In the case of the required load A, it is desirable to converge to the phase C from the viewpoint of keeping the DC voltage constant, and in the case of the required load B, the DC voltage is output as much as possible so that the DC voltage does not deviate from the target voltage. From the viewpoint of making it as long as possible, it is desirable to converge to phase D (Fig. 3).

Here, in order to control the phase to keep the DC voltage constant and to generate the maximum power, the signal for grasping the phase (the position of the rotating shaft of the three-phase generator), the DC voltage, and the DC current are used. It is easy to imagine measuring.

However, a sensor such as a resolver or an electromagnetic pickup is used as a signal for grasping the phase, but the sensor is expensive if it has high accuracy, and the inexpensive sensor has low accuracy. The same applies to the sensor that measures the direct current.

Therefore, there is also a method of eliminating the DC current sensor by calculating the rotation speed of the three-phase generator from the signal for grasping the phase and obtaining the phase-generated power characteristic from the rotation speed and the phase to control the phase. ..

However, if the phase-generated power characteristic is calculated in a state where the phase is out of phase, the phase of the maximum power generation remains out of phase. Therefore, in order to generate the maximum power, the signal for grasping the phase must be highly accurate. There is a need.

Japanese Unexamined Patent Publication No. 2011-4524

Therefore, the present invention makes it possible to apply a low-cost and low-precision sensor as a sensor for measuring a signal for grasping the phase of a generator, and also eliminates the need for a DC current sensor to generate maximum power at a constant voltage. It is an object of the present invention to provide a power supply device capable of phase-controlling an inverter.

The power supply device according to one aspect of the present invention is
A power supply device that supplies a predetermined voltage to a battery.
A generator that outputs AC voltage by generating electricity,
An inverter that rectifies the AC voltage output by the generator and outputs a DC output voltage,
A control unit that controls the phase of the inverter by a drive signal so that the output voltage approaches a preset target voltage based on the output voltage output by the inverter and the rotation phase and rotation speed of the generator. With
The control unit
Based on the relationship between the current output voltage output in the phase of the current inverter and the target voltage, and the relationship between the current output voltage and the previous output voltage output in the phase of the previous inverter. Determine the phase adjustment direction and phase adjustment amount of the phase of the inverter next time,
The inverter is characterized in that the phase control of the inverter is executed in the next phase adjusted by the determined phase adjustment direction and the phase adjustment amount.

In the power supply device
The control unit
The first step to acquire the current output voltage output in the phase of the current inverter, and
The second step of comparing the output voltage of this time with the target voltage, and
When it is determined in the second step that the output voltage of this time is equal to or higher than the target voltage, the third step of determining the phase adjustment direction as the advance angle is executed.

In the power supply device
The control unit
When it is determined in the second step that the current output voltage is less than the target voltage, the difference between the current output voltage and the previous output voltage output in the phase of the previous inverter is preset. The fourth step to determine whether or not it is above the specified value,
When it is determined in the fourth step that the difference between the current output voltage and the previous output voltage is less than the specified value, it is determined to maintain the phase adjustment direction in the previous phase adjustment direction. It is characterized by executing the fifth step and.

In the power supply device
The control unit
If it is determined in the fourth step that the difference between the current output voltage and the previous output voltage is equal to or greater than the specified value, whether or not the current output voltage has increased from the previous output voltage. The sixth step to determine whether
When it is determined in the sixth step that the current output voltage has not increased from the previous output voltage, the seventh step of determining that the phase adjustment direction is reversed from the previous phase adjustment direction. It is characterized by executing.

In the power supply device
The control unit
When it is determined in the sixth step that the current output voltage has increased from the previous output voltage, the eighth step of determining to maintain the phase adjustment direction in the previous phase adjustment direction is executed. It is characterized by doing.

In the power supply device
The control unit
After determining the next phase adjustment direction, the ninth step of calculating and determining the next phase adjustment amount based on the difference between the current output voltage and the target voltage is executed.

In the power supply device
The control unit
When the difference between the current output voltage and the target voltage is equal to or greater than a preset reference value, the next phase adjustment amount is determined to be the preset first phase adjustment amount.
On the other hand, when the difference between the current output voltage and the target voltage is less than the reference value, the next phase adjustment amount is determined to be the second phase adjustment amount set smaller than the first phase adjustment amount. To do
It is characterized by that.

In the power supply device
The control unit
The tenth step is executed in which the phase obtained by adding the determined phase adjustment amount in the determined phase adjustment direction to the phase of the phase control of the inverter this time is used as the phase of the phase control of the next inverter. It is a feature.

In the power supply device
The control unit
It is characterized in that the eleventh step of controlling the phase of the inverter is executed in the next phase adjusted by the phase adjustment direction and the phase adjustment amount determined in the tenth step.

In the power supply device
The control unit
The first step is characterized in that the output voltage of the inverter is acquired for each predetermined rotation speed of the engine process, for each preset time, for each specified mechanical angle, or for each specified electric angle. ..

In the power supply device
The generator
It is characterized in that it generates electricity in response to the drive of the engine and outputs the AC voltage, and the battery voltage of the battery is supplied to the load connected to the battery.

In the power supply device
The control unit
When the output voltage of the inverter fluctuates beyond the preset reference range due to the fluctuation of the required load due to the load and the fluctuation of the battery voltage, after the elapse of the preset standby time,
Based on the relationship between the current output voltage output in the phase of the current inverter and the target voltage, and the relationship between the current output voltage and the previous output voltage output in the phase of the previous inverter. Determine the phase adjustment direction and phase adjustment amount of the phase of the inverter next time,
The inverter is characterized in that the phase control of the inverter is executed in the next phase adjusted by the determined phase adjustment direction and the phase adjustment amount.

In the power supply device
The control unit
When the output voltage of the inverter fluctuates beyond a preset reference range due to fluctuations in the rotation of the engine and fluctuations in the AC voltage output by the generator, a preset standby time of After the lapse,
Based on the relationship between the current output voltage output in the phase of the current inverter and the target voltage, and the relationship between the current output voltage and the previous output voltage output in the phase of the previous inverter. Determine the phase adjustment direction and phase adjustment amount of the phase of the inverter next time,
The inverter is characterized in that the phase control of the inverter is executed in the next phase adjusted by the determined phase adjustment direction and the phase adjustment amount.

In the power supply device
The generator is a three-phase alternator, and the inverter is a three-phase full-bridge circuit.

The control method of the power supply device according to one aspect of the present invention is
A power supply device that supplies a predetermined voltage to a battery, a generator that outputs an AC voltage by generating power, an inverter that rectifies the AC voltage output by the generator and outputs a DC output voltage, and an inverter. A control unit that controls the phase of the inverter by a drive signal so that the output voltage approaches a preset target voltage based on the output voltage output by the inverter and the rotation phase and rotation speed of the generator. It is a control method of a power supply device equipped with
The control unit
Based on the relationship between the current output voltage output in the phase of the current inverter and the target voltage, and the relationship between the current output voltage and the previous output voltage output in the phase of the previous inverter. Determine the phase adjustment direction and phase adjustment amount of the phase of the inverter next time,
The inverter is characterized in that the phase control of the inverter is executed in the next phase adjusted by the determined phase adjustment direction and the phase adjustment amount.

The power supply device according to one aspect of the present invention is a power supply device that supplies a predetermined voltage to a battery, and rectifies a generator that outputs an AC voltage by generating power and an AC voltage output by the generator. The inverter outputs the DC output voltage, and the inverter is driven by a drive signal so that the output voltage approaches a preset target voltage based on the output voltage output by the inverter and the rotation phase and rotation speed of the generator. It is equipped with a control unit for phase control.

Then, the control unit is responsible for the relationship between the current output voltage and the target voltage output in the phase of the current (current) inverter, and the previous output in the phase of the current output voltage and the previous (previous) inverter. The phase adjustment direction (retard angle, advance angle) and phase adjustment amount (step length) of the phase of the next (next) inverter are determined based on the relationship with the output voltage of, and the determined phase adjustment direction and phase adjustment amount are used. The phase control of the inverter is executed at the adjusted next (next) phase.

As a result, according to the power supply device according to one aspect of the present invention, it is possible to apply a low-cost and low-precision sensor as a sensor for measuring a signal for grasping the phase of a generator, and a DC current sensor. The phase of the inverter can be controlled so as to generate the maximum power at a constant voltage while eliminating the need for.

FIG. 1 is a circuit diagram showing an example of the configuration of the power supply device 100 according to the embodiment of the present invention. FIG. 2 is a flow chart showing an example of a control operation of the power supply device 100 according to the embodiment shown in FIG. FIG. 3 is a diagram of the relationship between the generated power of the power supply device and the phase.

Hereinafter, the power supply device according to the present invention will be described with reference to the drawings.

FIG. 1 is a circuit diagram showing an example of the configuration of the power supply device 100 according to the embodiment of the present invention. Further, FIG. 2 is a flow chart showing an example of a control operation of the power supply device 100 according to the embodiment shown in FIG.

Here, the power supply device 100 shown in FIG. 1 is loaded on, for example, a vehicle (not shown). In this case, the battery BATT is loaded on the vehicle, and the output voltage Vout output by the power supply device 100 is supplied to the load load of the vehicle.

That is, the power supply device 100 shown in FIG. 1 supplies a predetermined voltage to the battery BATT based on the AC voltage generated and output by the generator G when the engine E of the vehicle is driven. There is.

Then, the battery voltage of the battery BATT is supplied to the load load connected to the battery BATT.

The power supply device 100 includes, for example, a generator G, an inverter X, and a control unit CNT, as shown in FIG.

Then, the generator G is designed to output an AC voltage by generating electricity.

The generator G generates electricity according to the drive of the engine E and outputs an AC voltage.

In this embodiment, the generator G is, for example, a three-phase alternating current generator. The generator G may be a single-phase generator.

Further, the inverter X is adapted to rectify the AC voltage output by the generator G and output the DC output voltage Vout.

In the present embodiment, the inverter X is, for example, a three-phase full bridge circuit.

Further, the control unit CNT uses a drive signal SD to bring the output voltage Vout closer to a preset target voltage based on the output voltage Vout output by the inverter X and the rotation phase and rotation speed of the generator G. The phase of X is controlled.

In particular, the control unit CNT has the relationship between the current output voltage Vout output in the phase of the current (current) inverter X and the target voltage described above, and the current output voltage Vout and the previous (previous) inverter. To determine the phase adjustment direction (retard, advance) and phase adjustment amount (step length) of the phase of the next (next) inverter X based on the relationship with the previous output voltage Vout output in the phase of X. It has become.

Further, the control unit CNT is adapted to execute the phase control of the inverter X in the next (next) phase adjusted by the determined phase adjustment direction and the phase adjustment amount.

Here, more specifically, the control unit CNT is adapted to acquire the current output voltage Vout output in the phase of the current (current) inverter X (first step S1 in FIG. 2).

In the first step S1, the control unit CNT outputs the inverter X for each predetermined number of revolutions of the engine E process, for each preset time, for each specified machine angle, or for each specified electric angle. The voltage Vout is acquired.

Then, the control unit CNT compares the current output voltage Vout acquired in the first step S1 with the above-mentioned target voltage (second step S2 in FIG. 2), and the current output voltage Vout is equal to or higher than the target voltage. If it is determined that there is, the phase adjustment direction is determined as the advance angle (third step S3 in FIG. 2).

Further, when the control unit CNT determines that the current output voltage Vout acquired in the first step S1 is less than the target voltage described above, the acquired current output voltage Vout and the previous (previous) inverter X It is determined whether or not the difference from the previous output voltage Vout output in the phase of is equal to or greater than a preset predetermined value (fourth step S4 in FIG. 2).

Further, when the control unit CNT determines in the fourth step S4 that the difference between the current output voltage Vout and the previous output voltage Vout is less than the specified value, the control unit CNT maintains the phase adjustment direction in the previous phase adjustment direction. (5th step S5 in FIG. 2).

Further, when the control unit CNT determines in the fourth step S4 that the difference between the current output voltage Vout and the previous output voltage Vout is equal to or greater than the above-mentioned specified value, the current output voltage Vout is the previous one. It is determined whether or not the output voltage has risen from Vout (sixth step S6 in FIG. 2).

Further, when the control unit CNT determines in the sixth step S6 that the current output voltage Vout has not risen from the previous output voltage Vout, the control unit CNT determines that the phase adjustment direction is reversed from the previous phase adjustment direction. (7th step S7 in FIG. 2).

Further, when the control unit CNT determines in the sixth step S6 that the current output voltage Vout is rising from the previous output voltage Vout, the control unit CNT determines to maintain the phase adjustment direction in the previous phase adjustment direction. (8th step S8 in FIG. 2).

Further, after determining the next phase adjustment direction, the control unit CNT calculates and determines the next phase adjustment amount (step length) based on the difference between the current output voltage Vout and the target voltage. (9th step S9 in FIG. 2).

Here, for example, when the difference between the output voltage Vout this time and the target voltage described above is equal to or greater than the preset reference value, the control unit CNT sets the next phase adjustment amount in advance. The amount of phase adjustment is determined.

On the other hand, when the difference between the output voltage Vout and the target voltage this time is less than the above-mentioned reference value, the control unit CNT is set to make the next phase adjustment amount smaller than the first phase adjustment amount. The amount of two-phase adjustment is determined.

In this way, by adjusting the next phase adjustment amount according to the difference between the current output voltage Vout and the target voltage, the phase adjustment amount is reduced as the output voltage Vout approaches the target voltage, and the output is output. The voltage Vout can be finely adjusted.

Further, the control unit CNT adds the phase adjustment amount determined in the ninth step S9 in the determined phase adjustment direction to the phase of the phase control of the inverter X this time (currently) to obtain the next phase. The process of setting the phase of the phase control of the inverter X (10th step S10) is executed.

Further, the control unit CNT executes the process of controlling the phase of the inverter X (11th step S11) at the next (next) phase adjusted by the phase adjustment direction and the phase adjustment amount determined in the 10th step S10. It has become.

The control unit CNT is set in advance when the output voltage Vout of the inverter X fluctuates beyond a preset reference range due to fluctuations in the required load due to the load phase and fluctuations in the battery voltage. After the elapse of the standby time, the relationship between the current output voltage Vout and the target voltage output in the phase of the current (current) inverter X, and the phase of the current output voltage Vout and the previous (previous) inverter X. Based on the relationship with the previous output voltage Vout output in, the phase adjustment direction (retard angle, advance angle) and phase adjustment amount (step length) of the phase of the next (next) inverter X are determined, and the determined phase. The phase control of the inverter X may be executed in the next (next) phase adjusted by the adjustment direction and the phase adjustment amount.

As a result, when the load fluctuation occurs, the output voltage Vout of the inverter X is made constant, and then the phase adjustment direction (retard angle, advance angle) and phase adjustment amount of the phase of the next (next) inverter X are made constant. It is possible to reduce the influence of load fluctuation on the phase control by determining the (step length) and controlling the phase of the inverter X in the next (next) phase adjusted by the determined phase adjustment direction and phase adjustment amount. it can.

Further, when the output voltage Vout of the inverter X fluctuates from a preset reference range due to the fluctuation of the rotation of the engine E and the fluctuation of the AC voltage output by the generator G, the control unit CNT causes a fluctuation. , The relationship between the current output voltage Vout and the target voltage output in the phase of the inverter X this time (current) after the elapse of the preset standby time, and the current output voltage Vout and the previous (previous) Based on the relationship with the previous output voltage Vout output in the phase of the inverter X, the phase adjustment direction (retard angle, advance angle) and phase adjustment amount (step length) of the phase of the next (next) inverter X are determined. , The phase of the inverter X may be controlled in the next (next) phase adjusted by the determined phase adjustment direction and the phase adjustment amount.

As a result, when the rotation fluctuation of the engine E occurs, after the output voltage Vout of the inverter X is made constant, the phase adjustment direction (retard angle, advance angle) of the phase of the next (next) inverter X and The phase adjustment amount (step length) is determined, and the phase of the inverter X is controlled in the next (next) phase adjusted by the determined phase adjustment direction and the phase adjustment amount, so that the rotation fluctuation of the engine E with respect to the phase control is changed. The impact can be reduced.

Next, an example of a control method of the power supply device 100 having the above configuration will be described with reference to FIGS. 1 and 2.

As described above, first, the control unit CNT of the power supply device 100 shown in FIG. 1 acquires the current output voltage Vout output in the phase of the current (current) inverter X (first in FIG. 2). Step S1).

Then, the control unit CNT compares the current output voltage Vout acquired in the first step S1 with the target voltage (second step S2 in FIG. 2).

Then, based on this comparison result, the control unit CNT determines the phase adjustment direction as the advance angle when it is determined that the output voltage Vout this time is equal to or higher than the target voltage described above (the third in FIG. 2). Step S3).

On the other hand, when the control unit CNT determines in the second step S2 described above that the output voltage Vout this time is less than the target voltage described above, the output voltage Vout this time and the inverter X of the previous time (previous) It is determined whether or not the difference from the previous output voltage Vout output in phase is equal to or greater than a preset predetermined value (fourth step S4 in FIG. 2).

Then, when the control unit CNT determines in the fourth step S4 that the difference between the current output voltage Vout and the previous output voltage Vout is less than the specified value, the phase adjustment direction is changed to the previous phase adjustment direction. It is determined to maintain (fifth step S5 in FIG. 2).

Further, when the control unit CNT determines in the fourth step S4 that the difference between the current output voltage Vout and the previous output voltage Vout is equal to or greater than the above-mentioned specified value, the current output voltage Vout is increased. It is determined whether or not the output voltage has increased from the previous output voltage Vout (sixth step S6 in FIG. 2).

On the other hand, when the control unit CNT determines in the sixth step S6 that the current output voltage Vout has not risen from the previous output voltage Vout, the control unit CNT reverses the phase adjustment direction from the previous phase adjustment direction. (7th step S7 in FIG. 2).

Then, when the control unit CNT determines in the sixth step S6 that the current output voltage Vout is rising from the previous output voltage Vout, the control unit CNT maintains the phase adjustment direction in the previous phase adjustment direction. The process of determining (8th step S8 of FIG. 2) is executed.

After determining the next phase adjustment direction as described above, the control unit CNT calculates and determines the next phase adjustment amount based on the difference between the output voltage Vout this time and the target voltage described above. (9th step S9) is executed.

Here, for example, in the ninth step S9, when the difference between the output voltage Vout this time and the target voltage described above is equal to or greater than the preset reference value described above, the control unit CNT will perform the next time. The phase adjustment amount is determined to be a preset first phase adjustment amount.

On the other hand, in the ninth step S9, when the difference between the output voltage Vout this time and the target voltage described above is less than the reference value described above, the control unit CNT sets the next phase adjustment amount to the first phase. The second phase adjustment amount set to be smaller than the adjustment amount is determined.

Then, after the ninth step S9, the control unit CNT adds the phase adjustment amount determined in the ninth step S9 to the phase of the phase control of the inverter X this time (currently) in the determined phase adjustment direction. The process (10th step S10) of using the obtained phase as the phase for the phase control of the next inverter X is executed.

Finally, the control unit CNT executes a process (11th step S11) of controlling the phase of the inverter X at the next (next) phase adjusted by the phase adjustment direction and the phase adjustment amount determined in the 10th step S10.

In the subsequent processing, the control unit CNT returns to the first step S1, replaces the phase of the phase control of the inverter X of the present time with the phase of the phase control of the new previous inverter X, and the next time described above. The phase of the phase control of the inverter X of the above is replaced with the phase of the phase control of the new inverter X this time, and the same process is executed.

The control operation of the power supply device 100 in the above steps enables the application of a low-cost and low-precision sensor as a sensor for measuring a signal for grasping the phase of the generator G, and eliminates the need for a DC current sensor. At the same time, the phase of the inverter can be controlled so as to generate maximum power at a constant voltage.

As described above, the power supply device according to one aspect of the present invention is a power supply device that supplies a predetermined voltage to the battery, and is a generator that outputs an AC voltage by generating power and a generator that outputs the AC voltage. An inverter that rectifies an AC voltage and outputs a DC output voltage, and an output voltage that approaches a preset target voltage based on the output voltage output by the inverter and the rotation phase and rotation speed of the generator. It includes a control unit that controls the phase of the inverter by a drive signal.

Then, the control unit is responsible for the relationship between the current output voltage and the target voltage output in the phase of the current (current) inverter, and the previous output in the phase of the current output voltage and the previous (previous) inverter. The phase adjustment direction (retard angle, advance angle) and phase adjustment amount (step length) of the phase of the next (next) inverter are determined based on the relationship with the output voltage of, and the determined phase adjustment direction and phase adjustment amount are used. The phase control of the inverter is executed at the adjusted next (next) phase.

As a result, according to the power supply device according to one aspect of the present invention, it is possible to apply a low-cost and low-precision sensor as a sensor for measuring a signal for grasping the phase of a generator, and a DC current sensor. The phase of the inverter can be controlled so as to generate the maximum power at a constant voltage while eliminating the need for.

Although some embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, as well as in the scope of the invention described in the claims and the equivalent scope thereof.

100 Power supply device E Engine G Generator X Inverter CNT Control unit BATT Battery Load Load

Claims (15)

A power supply device that supplies a predetermined voltage to a battery.
A generator that outputs AC voltage by generating electricity,
An inverter that rectifies the AC voltage output by the generator and outputs a DC output voltage,
A control unit that controls the phase of the inverter by a drive signal so that the output voltage approaches a preset target voltage based on the output voltage output by the inverter and the rotation phase and rotation speed of the generator. With
The control unit
Based on the relationship between the current output voltage output in the phase of the current inverter and the target voltage, and the relationship between the current output voltage and the previous output voltage output in the phase of the previous inverter. Determine the phase adjustment direction and phase adjustment amount of the phase of the inverter next time,
A power supply device characterized in that the phase control of the inverter is executed in the next phase adjusted by the determined phase adjustment direction and the phase adjustment amount. The control unit
The first step to acquire the current output voltage output in the phase of the current inverter, and
The second step of comparing the output voltage of this time with the target voltage, and
According to claim 1, when it is determined in the second step that the current output voltage is equal to or higher than the target voltage, the third step of determining the phase adjustment direction as the advance angle is executed. The power supply device described. The control unit
When it is determined in the second step that the current output voltage is less than the target voltage, the difference between the current output voltage and the previous output voltage output in the phase of the previous inverter is preset. The fourth step to determine whether or not it is above the specified value,
When it is determined in the fourth step that the difference between the current output voltage and the previous output voltage is less than the specified value, it is determined to maintain the phase adjustment direction in the previous phase adjustment direction. The power supply device according to claim 2, wherein the fifth step and the operation are performed. The control unit
If it is determined in the fourth step that the difference between the current output voltage and the previous output voltage is equal to or greater than the specified value, whether or not the current output voltage has increased from the previous output voltage. The sixth step to determine whether
When it is determined in the sixth step that the current output voltage has not increased from the previous output voltage, the seventh step of determining the phase adjustment direction to be reversed from the previous phase adjustment direction. The power supply device according to claim 3, wherein the power supply device according to claim 3. The control unit
When it is determined in the sixth step that the current output voltage has increased from the previous output voltage, the eighth step of determining to maintain the phase adjustment direction in the previous phase adjustment direction is executed. The power supply device according to claim 4, wherein the power supply device is characterized by the above. The control unit
The claim is characterized in that after determining the next phase adjustment direction, the ninth step of calculating and determining the next phase adjustment amount based on the difference between the current output voltage and the target voltage is executed. The power supply device according to any one of 1 to 5. The control unit
When the difference between the current output voltage and the target voltage is equal to or greater than a preset reference value, the next phase adjustment amount is determined to be the preset first phase adjustment amount.
On the other hand, when the difference between the current output voltage and the target voltage is less than the reference value, the next phase adjustment amount is determined to be the second phase adjustment amount set smaller than the first phase adjustment amount. To do
The power supply device according to any one of claims 1 to 6, characterized in that. The control unit
The tenth step is executed in which the phase obtained by adding the determined phase adjustment amount in the determined phase adjustment direction to the phase of the phase control of the inverter this time is used as the phase of the phase control of the next inverter. The power supply device according to any one of claims 1 to 7, wherein the power supply device is characterized. The control unit
The power supply device according to claim 8, wherein the eleventh step of controlling the phase of the inverter is executed in the next phase adjusted by the phase adjustment direction and the phase adjustment amount determined in the tenth step. The control unit
The first step is characterized in that the output voltage of the inverter is acquired for each predetermined number of revolutions of the engine process, for each preset time, for each specified mechanical angle, or for each specified electric angle. The power supply device according to any one of claims 2 to 9. The generator
Claims 1 to 10, wherein the AC voltage is output by generating electric power in response to the drive of the engine, and the battery voltage of the battery is supplied to the load connected to the battery. The power supply device according to any one item. The control unit
When the output voltage of the inverter fluctuates beyond the preset reference range due to the fluctuation of the required load due to the load and the fluctuation of the battery voltage, after the elapse of the preset standby time,
Based on the relationship between the current output voltage output in the phase of the current inverter and the target voltage, and the relationship between the current output voltage and the previous output voltage output in the phase of the previous inverter. Determine the phase adjustment direction and phase adjustment amount of the phase of the inverter next time,
The power supply device according to any one of claims 1 to 11, wherein the phase control of the inverter is executed in the next phase adjusted by the determined phase adjustment direction and the phase adjustment amount. The control unit
When the output voltage of the inverter fluctuates beyond a preset reference range due to fluctuations in the rotation of the engine and fluctuations in the AC voltage output by the generator, a preset standby time of After the lapse,
Based on the relationship between the current output voltage output in the phase of the current inverter and the target voltage, and the relationship between the current output voltage and the previous output voltage output in the phase of the previous inverter. Determine the phase adjustment direction and phase adjustment amount of the phase of the inverter next time,
The power supply device according to any one of claims 1 to 11, wherein the phase control of the inverter is executed in the next phase adjusted by the determined phase adjustment direction and the phase adjustment amount. The power supply device according to any one of claims 1 to 13, wherein the generator is a three-phase alternating current generator, and the inverter is a three-phase full bridge circuit. A power supply device that supplies a predetermined voltage to a battery, a generator that outputs an AC voltage by generating power, an inverter that rectifies the AC voltage output by the generator and outputs a DC output voltage, and an inverter. A control unit that controls the phase of the inverter by a drive signal so that the output voltage approaches a preset target voltage based on the output voltage output by the inverter and the rotation phase and rotation speed of the generator. It is a control method of a power supply device equipped with
The control unit
Based on the relationship between the current output voltage output in the phase of the current inverter and the target voltage, and the relationship between the current output voltage and the previous output voltage output in the phase of the previous inverter. Determine the phase adjustment direction and phase adjustment amount of the phase of the inverter next time,
A control method for a power supply device, characterized in that the phase control of the inverter is executed in the next phase adjusted by the determined phase adjustment direction and the phase adjustment amount.

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