JP4670746B2 - Generator control device - Google Patents

Description

  The present invention relates to a generator control device that performs vector control.

  As a motor control device that performs vector control of motor operation, PI control is performed using the current command value and the actual current actually flowing to the motor for the first term on the right side of each voltage equation shown in the following equations 1 and 2. By carrying out, the voltage command values Vd and Vq on the left side of the following equations 1 and 2 are obtained, and each switching element of the inverter for driving the motor is turned on and off based on the voltage command values Vd and Vq. There is something to make. (For example, see Patent Document 1)

  R is the resistance of the electric winding, p is the differential operator, ω is the angular velocity, Id is the d-axis current, Iq is the q-axis current, Ld is the d-axis inductance, Lq is the q-axis inductance, and Ke is the induced voltage constant. Show.

  In such a motor control device, the output voltage of the inverter is limited in the field-weakening region during power running or the region where the input voltage to the inverter is used more than the maximum value. At this time, in order to increase the torque, if the first term on the right side of Formula 2 above, that is, the voltage command value Vq on the left side of Formula 2 is increased by increasing the current command value of the q axis, the above number is relatively increased. The voltage command value Vd on the left side of 1 decreases, and the current flowing through the d-axis decreases. For this reason, the current that can be passed through the q-axis also decreases, and the torque is limited, which may prevent the torque from being increased to a desired value.

Therefore, in order to prevent the torque from being limited when setting the current command value in the field-weakening field region during power running or the region where the input voltage to the inverter is used more than the maximum value, There is a motor control device that sets a current command value in preference to a q-axis current command value. (For example, see Patent Document 2)
JP 2003-88193 A JP-A-9-74800

  When a motor is used as a generator (when used for regeneration), for example, when generating power from the engine driving force of a car or using it as a regenerative brake, torque is caused by accelerator operation, gear change, or fluctuations in the regenerative brake force. Variations may occur. At this time, it is necessary to set the d-axis and q-axis current command values so as to stabilize the generated voltage (regenerative voltage).

  However, as described above, in the motor control device that preferentially sets the d-axis current command value, when the output voltage decreases due to a decrease in the voltage command value Vq during regeneration, the voltage command value Vd also relatively increases. The limit value of the voltage that is decreased and applied to the inverter, that is, the upper limit value of the regenerative voltage is lowered. Therefore, in the motor control device, the upper limit value of the regenerative voltage may be lower than a predetermined voltage. For example, when the battery is charged with regenerative power, there is a problem that the regenerative battery cannot be charged if the upper limit value of the regenerative voltage is lower than the battery voltage. In addition, when another device is operated with regenerative power, the operation of the device becomes unstable.

  Therefore, an object of the present invention is to provide a generator control device capable of stabilizing the generated voltage.

In order to solve the above problems, the present invention adopts the following configuration.
That is, the generator control device of the present invention includes a current command value setting means for setting a current command value based on an input request value, and a voltage command value setting for setting a voltage command value according to the current command value. And switching control means for controlling on / off of each switching element of the inverter for controlling the generator according to the voltage command value. The current command value setting means prioritizes and sets the q-axis current command value over the d-axis current command value when raising the generated voltage at least during torque fluctuation.

  As a result, when the generated voltage is raised, the d-axis current command value can be set after raising the generated voltage first, so that the upper limit value of the generated voltage can be prevented from being lowered. Can be stabilized. In the present invention, the generator is a concept including an electric motor (motor), and the generated voltage can be interpreted as a regenerative voltage.

  The current command value setting means includes a first current command value setting means and a second current command value setting means, and the first current command value setting means sets the first current command value with respect to the required value. The second current command value setting means prioritizes the q-axis current command value so as to follow the q-axis first current command value by giving priority to the q-axis over the d-axis when raising the generated voltage at least. You may comprise so that it may set.

  The second current command value setting means includes priority determination means, and the priority determination means determines whether or not to prioritize the q-axis from the increase or decrease in the result of comparing the first current command value and the previous current command value. It may be configured to determine.

  In addition, when giving priority to the q-axis, the second current command value setting means determines that the q-axis first current command value approaches the q-axis first current command value according to the q-axis actual current value and the previous q-axis current command value. You may comprise so that the electric current command value of an axis | shaft may be set.

  In addition, when giving priority to the q-axis, the current command value setting means determines a fluctuation value according to the q-axis actual current value and the previous q-axis current command value, and sets the variation value to the previous q-axis current command value. You may comprise so that the value which added the fluctuation value may be set as a q-axis current command value.

The current command value setting means may be configured to prioritize and set the q-axis current command value over the d-axis current command value when the generated voltage is lowered during torque fluctuation.
Thus, when the generated voltage is lowered, the d-axis current command value can be set after the generated voltage is lowered first, so that the lower limit value of the generated voltage can be prevented from being raised. Can be stabilized.

The current command value setting means may be configured to prioritize and set the d-axis current command value over the q-axis current command value when the rotational speed of the generator increases.
Thereby, even if the rotation speed of the generator increases, the upper limit value of the generated voltage can be set first, so that the generated voltage can be stabilized.

The current command value setting means may be configured to prioritize and set the d-axis current command value over the q-axis current command value when the rotational speed of the generator decreases.
Thereby, even if the rotation speed of the generator decreases, the lower limit value of the generated voltage can be set first, so that the generated voltage can be stabilized.

  The current command value setting means includes a first current command value setting means and a second current command value setting means, and the first current command value setting means sets the first current command value with respect to the required value. The second current command value setting means sets the q-axis current command value so as to follow the q-axis first current command value when the q-axis current command value is given priority over the d-axis current command value. A value may be set, and the previous d-axis current command value may be set as the d-axis current command value.

When the q-axis current command value is set with priority, the generated voltage can be reliably stabilized by not changing the d-axis current command value.
The current command value setting means includes a first current command value setting means and a second current command value setting means, and the first current command value setting means sets the first current command value with respect to the required value. The second current command value setting means sets the d-axis current command value so as to follow the first d-axis current command value when setting the d-axis current command value with priority. The q-axis current command value may be set as the q-axis current command value.

  When the d-axis current command value is set with priority, the generated voltage can be reliably stabilized by not changing the q-axis current command value.

  According to the present invention, the generated voltage can be stabilized.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
In the present invention, the generator control is described as regeneration control during motor regeneration. That is, the motor is a generator, and the regenerative voltage is a generated voltage. FIG. 1 is a diagram illustrating a motor control device according to an embodiment of the present invention.

  A motor control device 1 shown in FIG. 1 includes a rotor electrical angle calculation unit 2, a rotation speed calculation unit 3, an angular velocity calculation unit 4, a three-phase / two-phase conversion unit 5, a subtraction unit 6, and a PI control unit 7. And a map 8 (first current command value setting means), a current command value setting unit 9 (second current command value setting means), and an inverter control unit 10. In addition, the current command value setting means described in the claims is configured by, for example, a map 8 and a current command value setting unit 9.

  The rotor electrical angle calculation unit 2 calculates the electrical angle θ of the rotor based on a position (for example, the U-phase axis) of the motor 11 based on a signal output from the electrical angle detection unit 12 provided in the motor 11. To do. The electrical angle detector 12 may be, for example, a resolver or a rotary encoder. The motor 11 may be a PM motor (Permanet Magnet Motor).

The rotational speed calculator 3 calculates the rotational speed V (r / min) of the rotor of the motor 11 based on the electrical angle θ and the rotational time of the rotor.
The angular velocity calculation unit 4 calculates the angular velocity ω (rad / s) based on the rotational speed V.

  The three-phase / two-phase conversion unit 5 calculates an electrical angle from a U-phase current Iu and a W-phase current Iw output from a current detection unit 14 provided between the motor 11 and an inverter 13 for driving the motor 11. Based on θ, the U-phase current Iu, the V-phase current Iv, and the W-phase current Iw flowing in each phase of the motor 11 are the actual current Id1 that flows in the d-axis direction of the motor 11 and the actual current that flows in the q-axis direction of the motor 11. Convert to Iq1. In addition, the said current detection part 14 can consider a Hall element etc., for example.

  The subtraction unit 6 calculates a difference value Vdc3 between the voltage Vdc1 detected by the voltage detection unit 16 provided between the inverter 13 and the battery 15 and the required value Vdc2 input from the outside. Note that the voltage detector 16 may be a shunt resistor, for example.

The PI control unit 7 performs PI control on the difference value Vdc3 and outputs a torque command value T.
The map 8 includes a map command value Id2 (d-axis first current command value) and map command value Iq2 (q-axis first current) corresponding to the input torque command value T, the requested value Vdc2, and the rotation speed V. Command value) and field weakening current command value Id3 (d-axis current command value when torque is zero).

  The current command value setting unit 9 sets the current command value Id4 and the current command value Iq4 based on the actual current Id1, the actual current Iq1, the map command value Id2, the map command value Iq2, and the field weakening current command value Id3. To do.

The inverter control unit 10 includes a voltage command value setting unit 17 (voltage command value setting unit) and a PWM control unit 18 (switching control unit).
The voltage command value setting unit 17 sets the voltage command value Vd and the voltage command value Vq based on the actual current Id1, the actual current Iq1, the current command value Id4, the current command value Iq4, and the angular velocity ω.

  For example, the voltage command value setting unit 17 multiplies the difference value between the actual current Id1 and the current command value Id4 by a constant Kp in the p (Proportional) term of the PI control calculation, and the actual current Id1 and the current command value Id4. A value corresponding to the first term of the right side of Equation 1 is obtained by adding the value obtained by multiplying the difference value of I by the constant Ki of the I (Integral) term of the PI control calculation, and the right side of Equation 1 is obtained from that value. The voltage command value Vd is set by subtracting the second term ωLqIq.

  For example, the voltage command value setting unit 17 multiplies the difference value between the actual current Iq1 and the current command value Iq4 by a constant Kp, and the difference value between the actual current Iq1 and the current command value Iq4 by a constant Ki. The value corresponding to the first term on the right side of the equation (2) is obtained by adding the calculated value to the value, and the second term ωLdId on the right side of the equation (2) and ωKe of the third term are added to the value. Set the value Vq.

  Based on the electrical angle θ, the voltage command value Vd, and the voltage command value Vq, the PWM control unit 18 applies PWM (Pulse Width Modulation) to each switching element of the inverter 13 (for example, IGBT (Insulated Gate Bipolar Transistor)). ) Drive signals S1 to S6 for turning on / off by control are output.

For example, the PWM control unit 18 adds the electrical angle θ and tan ⁻¹ (voltage command value Vq / voltage command value Vd) to thereby adjust the rotor position based on a certain position (for example, the U-phase axis) of the motor 11. The control phase is obtained, the fundamental wave for PWM control corresponding to the control phase is compared with the reference wave, and the drive signals S1 to S6 are output.

  Note that the inverter control unit 10 may turn on and off each switching element of the inverter 13 by control other than PWM control (for example, overmodulation control, 180-degree rectangular wave control, or the like).

FIG. 2 is a diagram showing the current command value setting unit 9.
The current command value setting unit 9 shown in FIG. 2 includes subtraction units 19 and 20, an Id fluctuation value determination unit 21, an Iq fluctuation value determination unit 22, subtraction units 23 and 24, and a priority flag determination unit 25 (priority determination). Means), a new current command value determination unit 26, and command value storage units 27 and 28.

The subtractor 19 calculates a difference value ΔId1 between the actual current Id1 and the previous current command value Id5 (previous d-axis current command value).
The subtracting unit 20 calculates a difference value ΔIq1 between the actual current Iq1 and the previous current command value Iq5 (previous q-axis current command value).

  The Id fluctuation value determining unit 21 determines a fluctuation value Id6 of the current command value Id4 based on the difference value ΔId1. The magnitude of the fluctuation value Id6 can be set arbitrarily. For example, the fluctuation value Id6 may be set so that the fluctuation value Id6 is 1A when the difference value ΔId1 is 0 to 3A, and the fluctuation value Id6 is 2A when the difference value ΔId1 is 4 to 6A.

  The Iq fluctuation value determining unit 22 determines the fluctuation value Iq6 of the current command value Iq4 based on the difference value ΔIq1. The magnitude of the fluctuation value Iq6 can be arbitrarily set within a preset upper limit value or less. Thus, by providing an upper limit value for the magnitude of the fluctuation value Iq6, a sudden change in the current command value Iq4 is prevented. As a result, the voltage command value setting unit 17 prevents the output voltage of the inverter 13 from being saturated due to the gain (Kp, Ki, etc.) during the PI control calculation, and the motor operation control has good responsiveness to the current command value Iq4. It can be performed.

The subtracting unit 23 calculates a difference value ΔId2 obtained by subtracting the absolute value of the previous current command value Id5 from the absolute value of the map command value Id2.
The subtracting unit 24 calculates a difference value ΔIq2 obtained by subtracting the absolute value of the previous current command value Iq5 from the absolute value of the map command value Iq2.

The priority flag determination unit 25 outputs the priority flag F1 or the priority flag F2 based on the respective signs of the difference value ΔId2 and the difference value ΔIq2.
That is, the priority flag determination unit 25 outputs the priority flag F1 when the signs of the difference value ΔId2 and the difference value ΔIq2 are both positive or negative. The priority flag determination unit 25 also determines that the sign of the difference value ΔId2 is positive and the sign of the difference value ΔIq2 is negative, or the sign of the difference value ΔId2 is negative and the sign of the difference value ΔIq2 is positive. At this time, the priority flag F2 is output.

  The new current command value determination unit 26 determines the d-axis current based on the field weakening current Id3, the previous current command value Id5, the previous current command value Iq5, the fluctuation value Id6, the fluctuation value Iq6, and the priority flag F1 or F2. The command value Id4 and the q-axis current command value Iq4 are determined.

  That is, when the priority flag F1 is input, the new current command value determination unit 26 adds the previous current command value Iq5 and the fluctuation value Iq6 so that the current command value Iq4 approaches the map command value Iq2, and then the weakening field. The previous current command value Id5 and the fluctuation value Id6 are added so that the current command value Id4 approaches the map command value Id2 with the magnetic current Id3 as a lower limit value.

  Further, when the priority flag F2 is input, the new current command value determination unit 26 sets the field weakening current Id3 as a lower limit value and the current command value Id5 and the fluctuation value so that the current command value Id4 approaches the map command value Id2. After adding Id6, the previous current command value Iq5 and the fluctuation value Iq6 are added so that the current command value Iq4 approaches the map command value Iq2.

  When adding the previous current command value Id5 and the fluctuation value Id6, the current command value Id4 increases from the previous setting when the sign of the fluctuation value Id6 is positive, and when the sign of the fluctuation value Id6 is negative, the current command The value Id4 decreases from the previous setting.

  Further, when adding the previous current command value Iq5 and the fluctuation value Iq6, the current command value Iq4 increases from the previous setting when the sign of the fluctuation value Iq6 is positive, and when the sign of the fluctuation value Iq6 is negative, the current command The value Iq4 decreases from the previous setting.

The command value storage unit 27 stores the current command value Id4 and outputs the stored current command value Id4 as the previous current command value Id5 when the next current command value Id4 is set.
The command value storage unit 28 stores the current command value Iq4, and outputs the stored current command value Iq4 as the previous current command value Iq5 when the next current command value Iq4 is set.

  FIG. 3A is a diagram for explaining an example of a current command value setting operation in the current command value setting unit 9 at the time of regeneration, and FIG. 3B is a diagram in the current command value setting unit 9 at the time of power running. It is a figure for demonstrating an example of electric current command value setting operation | movement. 3A and 3B, the horizontal axis indicates the current command value Iq4, and the vertical axis indicates the current command value Id4. Point A indicates the current command value Id4 and current command value Iq4 (that is, the previous current command value Id5 and the previous current command value Iq5) at the previous setting, and the tips of the thick arrows indicate the map command values Id2 and Iq2, respectively. Show. Of the thick arrows, the white arrow indicates the direction of torque fluctuation, and the hatched arrow indicates the direction of fluctuation of the rotational speed of the motor 11. The thin arrows indicate the setting order of the current command values Id4 and Iq4. Further, the command value setting operation in the current command value setting unit 9 is the same in both power running and regeneration.

(When the priority flag F1 is output from the priority flag determination unit 25)
First, the current command value setting unit 9 adds the previous current command value Iq5 and the fluctuation value Iq6 so that the current command value Iq4 becomes equal to the map command value Iq2, and outputs the added value as the current command value Iq4. The previous current command value Id5 is output as it is as the current command value Id4. Next, the current command value setting unit 9 outputs the previous current command value Iq5 as the current command value Iq4 as it is, and the previous current command value Id5 and the fluctuation value Id6 so that the current command value Id4 becomes equal to the map command value Id2. And the added value is output as a current command value Id4.

That is, the current command value setting unit 9 changes the current command value Id4 and the current command value Iq4 in the direction (1) shown in FIG. 3A or 3B (the difference value ΔId2 and the difference value ΔIq2). When both signs are positive), after increasing the current command value Iq4 (1-1), the current command value Id4 is increased (1-2). As a result, during regeneration, the torque of the motor 11 increases and the voltage Vdc (regenerative voltage) increases. Here, “increase” and “decrease” the current command value means to increase / decrease the current amount without changing the sign, and to increase / decrease the absolute value of the current value. (The same applies to the following)
Further, the current command value setting unit 9 changes the current command value Id4 and the current command value Iq4 in the direction (2) shown in FIG. 3A or 3B (the difference value ΔId2 and the difference value ΔIq2). When both signs are negative), the current command value Iq4 is decreased (2-1), and then the current command value Id4 is decreased (2-2). As a result, during regeneration, the voltage Vdc decreases while the torque of the motor 11 decreases.

(When the priority flag F2 is output from the priority flag determination unit 25)
First, the current command value setting unit 9 adds the previous current command value Id5 and the fluctuation value Id6 so that the current command value Id4 becomes equal to the map command value Id2, and outputs the added value as the current command value Id4. The previous current command value Iq5 is output as it is as the current command value Iq4. Next, the current command value setting unit 9 outputs the previous current command value Id5 as it is as the current command value Id4, and also the previous current command value Iq5 and the fluctuation value Iq6 so that the current command value Iq4 becomes equal to the map command value Iq2. And the added value is output as a current command value Iq4.

  That is, the current command value setting unit 9 changes the current command value Id4 and the current command value Iq4 in the direction (3) shown in FIG. 3A or 3B (the sign of the difference value ΔId2 is plus, When the sign of the difference value ΔIq2 is negative), after increasing the current command value Id4 (3-1), the current command value Iq4 is decreased (3-2). As a result, during regeneration, the rotation speed of the motor 11 increases while the voltage Vdc decreases.

  Further, the current command value setting unit 9 changes the current command value Id4 and the current command value Iq4 in the direction (4) shown in FIG. 3A or 3B (the sign of the difference value ΔId2 is minus, When the sign of the difference value ΔIq2 is positive), the current command value Id4 is decreased (4-1), and the current command value Iq4 is increased (4-2). As a result, during regeneration, the voltage Vdc increases while the rotational speed of the motor 11 decreases.

  In the current command value setting method, the method for bringing the current command values Id4 and Iq4 closer to the map command values Id2 and Iq2 is not limited to the above method. For example, when the priority flag F1 is output, the current command value may be gradually brought closer to the map command value while always changing the current command value Iq4 with priority. In this case, after the current command value Iq4 coincides with the map command value Iq2, the current command value Id4 is brought closer to the map command ground Id2.

  As described above, when the motor control device 1 of the present embodiment increases the regenerative voltage Vdc, the current command value Iq4 is given priority over the current command value Id4. Thus, when the regeneration voltage Vdc1 is raised, the current command value Id4 can be set after the voltage Vdc1 is raised first, so that the upper limit value of the voltage Vdc1 can be prevented from being lowered. The voltage Vdc1 can be stabilized at.

  The motor control device 1 of the present embodiment lowers the current command value Iq4 with priority over the current command value Id4 when lowering the regenerative voltage Vdc1. Thus, when the regeneration voltage Vdc1 is lowered, the current command value Id4 can be set after the voltage Vdc1 is lowered first, so that the lower limit value of the voltage Vdc1 can be prevented from being raised. The voltage Vdc1 can be stabilized at.

  Therefore, the motor control device 1 according to the present embodiment sets the current command value Iq4 with priority over the current command value Id4 during regeneration, so that the voltage Vdc is higher than the voltage of the battery 15 as instructed and Therefore, the motor 11 can be operated efficiently at the time of regeneration.

  Further, the motor control device 1 of the present embodiment decreases the current command value Iq4 after increasing the current command value Id4 when the rotation speed of the motor 11 during regeneration increases. Thereby, even if the rotation speed of the motor 11 is increased, the upper limit value of the voltage Vdc1 can be set first, so that the voltage Vdc can be prevented from becoming too higher than the voltage of the battery 15.

  Further, the motor control device 1 of the present embodiment increases the current command value Iq4 after decreasing the current command value Id4 when the rotation speed of the regenerative motor 11 decreases. Thereby, even if the rotation speed of the motor 11 decreases, the lower limit value of the voltage Vdc1 can be set first, so that the voltage Vdc1 can be prevented from becoming lower than the voltage of the battery 15.

Further, the motor control device of the present embodiment can perform the same control not only during regeneration (during power generation) but also during powering.
Moreover, although this embodiment demonstrated the motor control which performs power running and regeneration, you may apply when using a motor only as a generator.

  In this embodiment, the regenerative voltage is used for charging the battery 15, but an arbitrary device may be connected instead of the battery. Also in this case, since the voltage supplied to the device is stabilized, the operation of the device can be stabilized.

  In this embodiment, the Iq fluctuation value determining unit 22 sets the magnitude of the fluctuation value Iq6 within the preset upper limit value. However, the Id fluctuation value determining unit 21 similarly sets the magnitude of the fluctuation value Id6 in advance. It may be within the upper limit set. In this case, a sudden change in the current command value Id4 is prevented. As a result, it is possible to prevent the output voltage from being saturated during the PI control calculation of the voltage command value setting unit 17.

It is a figure which shows the motor control apparatus of embodiment of this invention. It is a figure which shows an electric current command value setting part. (A) is a figure for demonstrating the electric current command value setting operation | movement at the time of regeneration. (B) is a figure for demonstrating the electric current command value setting operation | movement at the time of power running.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Motor controller 2 Rotor electrical angle calculation part 3 Rotational speed calculation part 4 Angular speed calculation part 5 3 phase / 2 phase conversion part 6 Subtraction part 7 PI control part 8 Map 9 Current command value setting part 10 Inverter control part 11 Motor 12 Electricity Angle detection unit 13 Inverter 14 Current detection unit 15 Battery 16 Voltage detection unit 17 Voltage command value setting unit 18 PWM control unit 19 Subtraction unit 20 Subtraction unit 21 Id fluctuation value determination unit 22 Iq fluctuation value determination unit 23 Subtraction unit 24 Subtraction unit 25 Priority flag determination unit 26 New current command value determination unit 27 Command value storage unit 28 Command value storage unit

Claims (10)

Current command value setting means for setting the current command value based on the input request value;
Voltage command value setting means for setting a voltage command value according to the current command value;
Switching control means for controlling on and off of each switching element of the inverter for controlling the generator according to the voltage command value;
With
The current command value setting means sets the q-axis current command value with priority over the d-axis current command value when raising the generated voltage at least during torque fluctuation.
A control device for a generator. The generator control device according to claim 1,
The current command value setting means includes a first current command value setting means and a second current command value setting means,
The first current command value setting means sets a first current command value for the required value,
The second current command value setting means prioritizes the q axis over the d axis when at least increasing the generated voltage, and follows the first current command value of the q axis so as to follow the first current command value of the q axis. Set
A control device for a generator. The generator control device according to claim 2,
The second current command value setting means includes priority determination means,
The priority determination means determines whether or not to prioritize the q-axis from an increase or decrease in the result of comparing the first current command value and the previous current command value;
A control device for a generator. The generator control device according to claim 2,
When giving priority to the q-axis, the second current command value setting means is configured to approach the first current command value on the q-axis according to the actual current value on the q-axis and the previous current command value on the q-axis. Set the q-axis current command value,
A control device for a generator. The generator control device according to claim 1,
When the q-axis is prioritized, the current command value setting means determines a variation value according to the q-axis actual current value and the previous q-axis current command value, and sets the variation value to the previous q-axis current command value. A value obtained by adding the fluctuation value is set as the q-axis current command value.
A control device for a generator. The generator control device according to claim 1,
The current command value setting means prioritizes and sets the q-axis current command value over the d-axis current command value when lowering the generated voltage during torque fluctuation.
A control device for a generator. The generator control device according to claim 1,
The current command value setting means sets the current command value for the d axis with priority over the current command value for the q axis when the rotational speed of the generator increases.
A control device for a generator. The generator control device according to claim 1,
The current command value setting means sets the current command value for the d-axis with priority over the current command value for the q-axis when the rotational speed of the generator decreases.
A control device for a generator. The generator control device according to claim 1,
The current command value setting means includes a first current command value setting means and a second current command value setting means,
The first current command value setting means sets a first current command value for the required value,
The second current command value setting means sets the q-axis so as to follow the first current command value of the q-axis when setting the q-axis current command value in preference to the d-axis current command value. Current command value is set, and the previous d-axis current command value is set as the d-axis current command value.
A control device for a generator. The generator control device according to claim 1,
The current command value setting means includes a first current command value setting means and a second current command value setting means,
The first current command value setting means sets a first current command value for the required value,
The second current command value setting means sets the d-axis so as to follow the first current command value of the d-axis when the current command value of the d-axis is set with priority over the current command value of the q-axis. Current command value is set, and the previous q-axis current command value is set as the q-axis current command value.
A control device for a generator.

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