JP2011097677A - Motor drive unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a motor drive unit which reduces both physical quantity such as vibration or noise, and power consumption of a motor (including an inverter), or minimizes one of them on condition that either of them is not larger than a threshold. <P>SOLUTION: A phase correction means 33 selects a phase correction pattern whose current value [A] is minimum from among remaining phase correction patterns, and sets a phase correction amount [degree] in the phase correction pattern as a phase correction amount to be added to a current phase 18. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a motor drive device that rotationally drives a fan or the like used in an air conditioner or the like.

  As a conventional motor drive device, there is a device that is provided with a vibration sensor or a microphone, and changes an energization waveform output from an inverter according to vibration or noise components acquired therefrom, thereby reducing vibration or noise (for example, see Patent Document 1). .

  In addition, there has been proposed a motor drive device that drives the motor so that the power consumption is minimized by advancing or retarding the phase angle of the current output from the inverter (see, for example, Patent Document 2).

JP-A-4-364394 (page 4-6, FIG. 4) JP-A-4-140093 (page 3-6, FIG. 1)

  However, since the motor driving devices according to Patent Document 1 and Patent Document 2 are intended to reduce either vibration or noise or power consumption, driving that reduces power consumption along with vibration or noise. Or, it is impossible to drive to minimize the other under the condition that one of them is below a certain threshold value, and it is not applicable to a motor drive device that needs to reduce vibration or noise and power consumption. was there.

  The present invention has been made to solve the above-described problems, and reduces both a physical quantity such as vibration or noise and power consumption of a motor (including an inverter), or one of them is less than a threshold value. The object is to obtain a motor drive that minimizes the other under the conditions.

  A motor driving device according to the present invention includes a switching element that converts a DC voltage into an AC voltage, an inverter that rotates the motor by the AC voltage, and an electric quantity detection unit that detects an electric quantity supplied to the inverter. A rotation position detection means for detecting the rotation position of the motor, a physical quantity detection means for detecting a physical quantity indicating the state of the motor, and a control section for controlling the operation of the switching element, the control section comprising: The current phase output to the motor is calculated based on the rotational position received from the rotation detection unit, and the electrical quantity received from the electrical quantity detection unit and the physical quantity received from the physical quantity detection unit are small. As described above, phase correction means for correcting the current phase is provided.

  According to the present invention, it is possible to obtain a motor drive device that can drive a motor with a phase that reduces the noise value and the current value, and that can reduce noise and reduce power consumption.

1 is an overall configuration diagram of a motor drive device according to Embodiment 1 of the present invention. It is an internal block diagram of the control part 4 of the motor drive device which concerns on Embodiment 1 of this invention. 4 is a flowchart showing the operation of the control unit 4 of the motor drive device according to Embodiment 1 of the present invention, in particular, the operation of the phase correction means 33. It is a figure which shows the phase correction pattern which the phase correction means 33 of the motor drive device which concerns on Embodiment 1 of this invention hold | maintains. It is an internal block diagram of the control part 4 of the motor drive device which concerns on Embodiment 2 of this invention. 7 is a flowchart showing the operation of the control unit 4 of the motor drive device according to Embodiment 2 of the present invention, in particular, the phase correction means 33. It is a figure which shows the phase correction pattern which the phase correction means 33 of the motor drive device which concerns on Embodiment 2 of this invention hold | maintains. It is an internal block diagram of the control part 4 of the motor drive device which concerns on Embodiment 3 of this invention. 7 is a flowchart showing the operation of the control unit 4 of the motor drive device according to Embodiment 3 of the present invention, in particular, the operation of the phase correction means 33.

Embodiment 1 FIG.
(Overall configuration of motor drive unit)
FIG. 1 is an overall configuration diagram of a motor drive device according to Embodiment 1 of the present invention.
As shown in FIG. 1, the DC power source 1 is connected to the power input side of the inverter 2, and the motor 3 such as a brushless DC motor is connected to the output side of the inverter 2. The inverter 2 includes a switching element (not shown). The switching element is controlled in opening / closing operation by PWM control based on the PWM waveform information 25 output by the control unit 4 to convert a DC voltage into an AC voltage. The converted AC voltage is supplied to the motor 3 to be driven to rotate.

The DC voltage supplied to the inverter 2 by the DC power source 1 is detected as voltage information 11 by the voltage detection means 5, and this voltage information 11 is transmitted to the control unit 4. Further, the direct current supplied to the inverter 2 by the direct current power source 1 is detected as current information 12 by the current detection means 6, and this current information 12 is also transmitted to the control unit 4.
The voltage detection means 5 and the current detection means 6 correspond to the “electric quantity detection means” of the present invention.

A position sensor 7 is installed in the motor 3, and the position sensor 7 detects the position of the magnetic pole while the motor 3 is rotating as position information 13 and transmits this position information 13 to the control unit 4. Furthermore, a sound sensor 8 is installed in the motor 3, and this sound sensor 8 detects the rotation sound of the motor 3, or the rotation sound of the fan when the motor 3 is driven to rotate. The noise information 14 is detected and transmitted to the control unit 4.
The position sensor 7 and the sound sensor 8 correspond to the “rotational position detection unit” and the “physical quantity detection unit” of the present invention, respectively.

(Configuration and operation of control unit 4)
FIG. 2 is an internal configuration diagram of the control unit 4 of the motor drive device according to Embodiment 1 of the present invention.
As shown in FIG. 2, the control unit 4 includes at least a command voltage calculation unit 31, a phase calculation unit 32, a phase correction unit 33, and a PWM waveform generation unit 34.

  The command voltage calculation unit 31 receives the position information 13 detected by the position sensor 7, and calculates the actual rotational speed 15 of the motor 3 from the position information 13. Further, the command voltage calculation unit 31 acquires the current command rotational speed 16, and based on the command rotational speed 16 and the actual rotational speed 15, the command voltage 17 that causes the actual rotational speed 15 to reach the command rotational speed 16. Is calculated.

  The phase calculation unit 32 receives the position information 13 detected by the position sensor 7 and the actual rotation number 15 calculated by the command voltage calculation unit 31, and based on the position information 13 and the actual rotation number 15, an inverter A current phase 18, which is a phase of current that 2 outputs to the motor 3, is calculated.

The phase correction unit 33 receives the current information 12 detected by the current detection unit 6 and the noise information 14 detected by the sound sensor 8, and the current value in the current information 12 and the noise value in the noise information 14. Is set so that both are small, and a correction current phase 19 is calculated by adding this phase correction amount to the current phase 18 received from the phase calculation unit 32.
Note that the current value in the current information 12 and the noise value in the noise information 14 correspond to the “electricity” and “physical quantity” of the present invention, respectively.

  The PWM waveform generator 34 is based on the voltage information 11 detected by the voltage detector 5, the command voltage 17 received from the command voltage calculator 31, and the corrected current phase 19 received from the phase corrector 33. PWM waveform information 25 for PWM-controlling the switching element is generated and output to the inverter 2.

(Operation of the phase correction means 33)
FIG. 3 is a flowchart showing the operation of the control unit 4 of the motor drive device according to the first embodiment of the present invention, in particular, the operation of the phase correction unit 33. FIG. 4 shows the phase correction pattern held by the phase correction unit 33. FIG. Hereinafter, the operation of the phase correction means 33 will be described with reference to FIG.

(S101)
Since the optimum phase of the current differs depending on the rotation speed of the motor 3, the phase correction means 33 does not start the operation of setting the phase correction amount for the current phase 18 below until the rotation speed of the motor 3 is stabilized. When it is determined that the rotation speed of the motor 3 is stable, the process proceeds to step S102.

(S102)
First, the phase correction unit 33 selects one of the held phase correction patterns. Here, for example, the phase correction pattern A shown in FIG. 4 is selected, and the phase correction amount is set to −2 degrees.
The phase correction pattern is held by the phase correction unit 33. However, the phase correction unit 33 need not be held by the phase correction unit 33, and is held by one of the control units 4. It may be in an accessible state.

(S103)
The phase correcting unit 33 corrects the current phase 18 received from the phase calculating unit 32 with the above-described phase correction amount, calculates the corrected current phase 19, and supplies the corrected current phase 19 to the PWM waveform generating unit 34. Send. The PWM waveform generation unit 34 generates PWM waveform information 25 based on the correction current phase 19, the voltage information 11 and the command voltage 17 described above, and outputs the PWM waveform information 25 to the inverter 2. The inverter 2 performs PWM control on the motor 3 based on the PWM waveform information 25 and rotationally drives it.

(S104)
When the rotational speed of the motor 3 is stabilized, the control unit 4 receives the current information 12 via the current detection means 6 and receives the noise information 14 via the sound sensor 8.

(S105)
The control unit 4 stores the current information 12 and noise information 14 received in step S104 in the phase correction pattern A selected by the phase correction unit 33 in step S102.

(S106)
The phase correction unit 33 determines whether or not the processing shown in steps S102 to S105 has been performed for all of the held phase correction patterns (phase correction pattern A to phase correction pattern E in FIG. 4). Check. As a result of the confirmation, if the above processing is performed for all the phase correction patterns, the process proceeds to step S107. On the other hand, if not, the process returns to step S102.

(S107)
The phase correcting unit 33 excludes a pattern having a noise value [dB] threshold value (for example, 50 [dB]) or more from a preset phase correction pattern. In FIG. 4, the phase correction unit 33 excludes the phase correction pattern A to the phase correction pattern C having values filled with noise values.

(S108)
The phase correction means 33 is a phase correction pattern (phase correction in FIG. 4) having the smallest current value [A] among the remaining phase correction patterns (phase correction pattern D and phase correction pattern E in FIG. 4). Pattern D) is selected, and the phase correction amount [degree] in the phase correction pattern is set as the phase correction amount to be added to the current phase 18. In FIG. 4, +1 [degree] is set as the phase correction amount.

  By the operation as described above, the phase correction unit 33 sets the phase correction amount to be added to the current phase 18 received from the phase calculation unit 32.

(Effect of Embodiment 1)
With the above configuration and operation, the noise value can be suppressed below the threshold value, and the motor 3 can be driven at a phase where the current value is minimized under the conditions, noise can be reduced and power consumption can be reduced. A motor drive device can be obtained.

  In the present embodiment, as shown in FIG. 2 and FIG. 3, the operation is performed to minimize the current value. However, the present invention is not limited to this. The voltage information 11 may be received from the means 5, the power value may be calculated from the voltage information 11 and the current information 12, and the power value may be minimized. In this case, the power value corresponds to the “electric amount” of the present invention.

  In the present embodiment, the sound sensor 8 is provided to reduce the detected noise. However, the present invention is not limited to this, and instead of the sound sensor 8 or the sound sensor 8. In addition, it may be configured to include a vibration sensor. In this case, the motor 3 can be driven so that the vibration level or the vibration level and the noise value are suppressed to a threshold value or less and the current value or power value is minimized. In this case, the vibration sensor corresponds to “physical quantity detection means” of the present invention, and the vibration level corresponds to “physical quantity” of the present invention.

  In the above operation, the phase correction pattern is selected so that the noise value (or vibration level) is equal to or less than the threshold value and the current value (or power value) is minimized. However, the present invention is not limited to this. Instead, the phase correction pattern may be selected such that the current value (or power value) is equal to or less than the threshold value and the noise value (or vibration level) is minimized. Furthermore, it is good also as operation | movement which selects the phase correction pattern that both a noise value (or vibration level) and an electric current value (or electric power value) become below a threshold value. Even with this operation, a motor drive device that can reduce noise (or vibration) and reduce power consumption can be obtained.

Embodiment 2. FIG.
The motor drive device according to the present embodiment will be described focusing on differences from the configuration and operation of the motor drive device according to the first embodiment. Here, the overall configuration of the motor drive device according to the present embodiment is the same as the overall configuration of the motor drive device according to Embodiment 1 shown in FIG.

(Configuration and operation of control unit 4)
FIG. 5 is an internal configuration diagram of the control unit 4 of the motor drive device according to Embodiment 2 of the present invention. Here, in FIG. 5, the same reference numerals are given to the same portions described in FIG. 2 in the first embodiment.
As shown in FIG. 5, the control unit 4 includes at least a command voltage calculation unit 31, a phase calculation unit 32, a phase correction unit 33, a PWM waveform generation unit 34, and a noise value determination unit 35.

When the noise value determination means 35 receives the noise information 14 detected by the sound sensor 8, determines whether or not the noise value in the noise information 14 exceeds a preset threshold, and determines that it has exceeded For this, a start command 20 for causing the phase correction unit 33 to perform a phase correction amount setting operation shown in FIG. 6 to be described later is transmitted to the phase correction unit 33.
The noise value determination means 35 corresponds to the “physical quantity determination means” of the present invention.

  The phase calculation unit 32 transmits the calculated current phase 18 directly to the PWM waveform generation unit 34 when the phase correction unit 33 has not performed the phase correction amount setting operation shown in FIG.

  When the phase correction unit 33 receives the activation command 20 from the noise level determination unit 35, the phase correction unit 33 performs the following operation. The phase correction unit 33 receives the current information 12 detected by the current detection unit 6 and the noise information 14 detected by the sound sensor 8, and the current value in the current information 12 and the noise value in the noise information 14. Is set so that both are small, and a correction current phase 19 is calculated by adding this phase correction amount to the current phase 18 received from the phase calculation unit 32.

  The PWM waveform generation unit 34 receives the voltage information 11 detected by the voltage detection unit 5, the command voltage 17 received from the command voltage calculation unit 31, and the correction current phase 19 received from the phase correction unit 33 or the phase calculation unit 32. Based on the received current phase 18, PWM waveform information 25 for PWM control of the switching element in the inverter 2 is generated and output to the inverter 2.

(Operation of the phase correction means 33)
FIG. 6 is a flowchart showing the operation of the control unit 4 of the motor drive device according to the second embodiment of the present invention, and in particular, the operation of the phase correction unit 33. FIG. 7 shows the phase correction pattern held by the phase correction unit 33. FIG. Hereinafter, the operation of the phase correction means 33 will be described with reference to FIG.

(S201)
Since the optimum phase of the current differs depending on the rotation speed of the motor 3, the phase correction means 33 does not start the operation of setting the phase correction amount for the current phase 18 below until the rotation speed of the motor 3 is stabilized. When it is determined that the rotation speed of the motor 3 is stable, the process proceeds to step S202.

(S202)
The noise value determination means 35 receives the noise information 14 detected by the sound sensor 8.

(S203)
The noise value determination means 35 determines whether or not the noise value in the received noise information 14 exceeds a preset threshold value. As a result of this determination, if it is determined that it has exceeded, the start command 20 is transmitted to the phase correction means 33 in order to perform the operations shown in steps S204 to S208, and the process proceeds to step S204. On the other hand, when it determines with not exceeding, it returns to step S202.

(S204)
When the phase correction unit 33 receives the activation command 20 from the noise value determination unit 35, the phase correction unit 33 selects one of the held phase correction patterns. Here, for example, the phase correction pattern A shown in FIG. 7 is selected, and the phase correction amount is set to +1 [degree].
The phase correction pattern is held by the phase correction unit 33. However, the phase correction unit 33 need not be held by the phase correction unit 33, and is held by one of the control units 4. It may be in an accessible state.

(S205)
The phase correcting unit 33 corrects the current phase 18 received from the phase calculating unit 32 with the above-described phase correction amount, calculates the corrected current phase 19, and supplies the corrected current phase 19 to the PWM waveform generating unit 34. Send. The PWM waveform generation unit 34 generates PWM waveform information 25 based on the correction current phase 19, the voltage information 11 and the command voltage 17 described above, and outputs the PWM waveform information 25 to the inverter 2. The inverter 2 performs PWM control on the motor 3 based on the PWM waveform information 25 and rotationally drives it.

(S206)
When the rotational speed of the motor 3 is stabilized, the control unit 4 receives the current information 12 via the current detection means 6 and receives the noise information 14 via the sound sensor 8.

(S207)
The phase correction unit 33 is configured so that the current value in the current information 12 and the noise value in the noise information 14 received by the control unit 4 are preset threshold values (for example, a current value of 1.0 [A] and a noise value). 50 [dB]) or less. As a result of the determination, if both the current value and the noise value are equal to or less than the threshold value, the process proceeds to step S208. On the other hand, if the current value or the noise value is not less than or equal to the threshold value, the process returns to step S204. If the phase correction unit 33 selects the phase correction pattern A in FIG. 7 in step S204, both the current value and noise value are larger than the threshold value, and the process returns to step S204.

(S208)
The phase correction unit 33 determines the phase correction amount in the phase correction pattern (in FIG. 7, the phase correction pattern D in which neither the current value nor the noise value is filled) determined that both the current value and the noise value are equal to or less than the threshold value. [Degree] is set as a phase correction amount to be added to the current phase 18. In FIG. 7, −2 [degrees] is set as the phase correction amount.
In FIG. 6, when a phase correction pattern in which it is determined that both the current value and the noise value are equal to or smaller than the threshold value is found, the subsequent phase correction pattern is not selected, but FIG. 3 of the first embodiment. When the process is performed for all the phase correction patterns as in the process of step S106, there may be a plurality of phase correction patterns in which both the current value and the noise value are equal to or less than the threshold value. In that case, for example, the operation of selecting the one having the smallest current value or the smallest noise value in the plurality of phase correction patterns may be performed.

  By the operation as described above, the phase correction unit 33 sets the phase correction amount to be added to the current phase 18 received from the phase calculation unit 32.

(Effect of Embodiment 2)
With the above configuration and operation, it is possible to drive the motor 3 so that both the current value and the noise value are equal to or less than the threshold value, and it is possible to obtain a motor driving device that can reduce noise and reduce power consumption.
In addition, even when the noise increases due to individual differences of the motor 3 or each unit, differences in installation locations, aging deterioration, or the like, the motor 3 can be driven with a phase that can suppress the noise and current values below a threshold value.

  In this embodiment, as shown in FIGS. 6 and 7, the operation is performed using the current value. However, the present invention is not limited to this, and the phase correction unit 33 may be the voltage detection unit 5. It is good also as operation | movement which receives the voltage information 11 from this, calculates a power value from this voltage information 11 and the current information 12, and makes this power value below a predetermined threshold value.

  In the present embodiment, the sound sensor 8 is provided to reduce the detected noise. However, the present invention is not limited to this, and instead of the sound sensor 8 or the sound sensor 8. In addition, it may be configured to include a vibration sensor. In this case, the motor 3 can be driven so as to suppress the vibration level or the vibration level and the noise value below the threshold value.

  Further, in the above operation, the phase correction pattern in which both the noise value (or vibration level) and the current value (or power value) are equal to or less than a predetermined threshold is selected, but the present invention is not limited to this. As in the first embodiment, a noise correction value (or vibration level) is a threshold value or less, a phase correction pattern that minimizes a current value (or power value), or a current value (or power value) is a threshold value or less, and a noise value. An operation of selecting a phase correction pattern that minimizes (vibration level) may be employed. By adopting such an operation, it is possible to obtain a motor drive device that can reduce noise (or vibration) and reduce power consumption.

  In the above operation, when it is determined that the noise level (or vibration level) detected by the noise level determination unit 35 exceeds a predetermined threshold, the phase correction unit 33 performs the phase correction amount setting operation. However, the present invention is not limited to this. For example, a current value determination unit (or power value determination unit) is provided, and the current value (or power value) is determined by the current value determination unit (or power value determination unit). ) May exceed the predetermined threshold value, the phase correction unit 33 may perform an operation for setting the phase correction amount. In addition, when it is determined that the noise value (or vibration level) detected by the noise value determination unit 35 exceeds a predetermined threshold, or the current value (or power value determination unit) described above, The phase correction unit 33 may perform the phase correction amount setting operation when at least one of the conditions in the case where it is determined that the (power value) exceeds a predetermined threshold is satisfied. In this case, the current value determination means and the power value determination means correspond to the “electricity determination means” of the present invention.

  Further, in the present embodiment, the noise value determination means 35 is provided in order to take the timing at which the phase correction means 33 performs the phase correction amount setting operation, but the present invention is not limited to this. By providing the timing means, the phase correction means 33 may be configured to perform the phase correction amount setting operation according to the timing output by the timing means. At this time, as the above timing, for example, the timing at which it is detected that the motor 3 has been initially driven, the timing at which the elapsed time since the motor 3 has been driven to measure every certain time, and the input from the outside The timing at which the signal is received or the current time may be measured and the predetermined time may be used as the timing.

Embodiment 3 FIG.
The motor drive device according to the present embodiment will be described focusing on differences from the configuration and operation of the motor drive device according to the second embodiment. Here, the overall configuration of the motor drive device according to the present embodiment is the same as the overall configuration of the motor drive device according to Embodiment 1 shown in FIG.

(Configuration and operation of control unit 4)
FIG. 8 is an internal configuration diagram of the control unit 4 of the motor drive device according to Embodiment 3 of the present invention. Here, in FIG. 8, the same reference numerals are given to the same portions described in FIG. 2 in the first embodiment.
As shown in FIG. 8, the control unit 4 includes at least a command voltage calculation unit 31, a phase calculation unit 32, a phase correction unit 33, a PWM waveform generation unit 34, a noise value determination unit 35, and an abnormality notification unit 36.

  When the phase correction unit 33 cannot select the phase correction pattern, the phase correction unit 33 transmits a correction pattern non-notification 21 to the abnormality notification unit 36.

  When the abnormality notification unit 36 receives the correction pattern non-notification 21 from the phase correction unit 33, the abnormality notification unit 36 outputs the abnormality notification 22 to the outside. As the abnormality notification 22, for example, a method of notifying the user directly by sound or light, or the PWM waveform generation unit 34 is stopped from generating the PWM waveform information 25, and the rotation drive of the motor 3 by the inverter 2 is stopped. It is realized by the method of letting.

(Operation of the phase correction means 33)
FIG. 9 is a flowchart showing the operation of the control unit 4 of the motor drive device according to the third embodiment of the present invention, in particular, the phase correction means 33. Hereinafter, the operation of the phase correction unit 33 will be described with a focus on differences from the operation shown in the flowchart of FIG. 6 in the second embodiment with reference to FIG.

  The processing of step S201 to step S206 and step S208 is the same as in the second embodiment.

(S207)
The phase correction unit 33 is configured so that the current value in the current information 12 and the noise value in the noise information 14 received by the control unit 4 are preset threshold values (for example, a current value of 1.0 [A] and a noise value). 50 [dB]) or less. As a result of the determination, if both the current value and the noise value are equal to or less than the threshold value, the process proceeds to step S208. On the other hand, if the current value or the noise value is not less than or equal to the threshold value, the process proceeds to step S209. If the phase correction unit 33 selects the phase correction pattern A in FIG. 7 in step S204, the current value and noise value are both greater than the threshold value, and the process proceeds to step S209.

(S209)
The phase correction means 33 confirms whether or not the current value or noise value of all the held phase correction patterns (phase correction pattern A to phase correction pattern D in FIG. 7) is determined to be not less than the threshold value. To do. As a result of the confirmation, if the current value or noise value is not less than or equal to the threshold value for all phase correction patterns, it is determined that there is no phase correction pattern to be selected, and a correction pattern non-notification 21 is transmitted to the abnormality notification means 36. Proceed to step S210. On the other hand, if not, the process returns to step S204.

(S210)
When the abnormality notification unit 36 receives the correction pattern non-notification 21 from the phase correction unit 33, the abnormality notification unit 36 outputs the abnormality notification 22 to the outside.

  By the operation as described above, the phase correction unit 33 sets the phase correction amount to be added to the current phase 18 received from the phase calculation unit 32.

(Effect of Embodiment 3)
With the above configuration and operation, when the noise or current value increases due to aging or failure, an abnormality can be notified, and safe motor drive can be realized.

  1 DC power supply, 2 inverter, 3 motor, 4 control unit, 5 voltage detection means, 6 current detection means, 7 position sensor, 8 sound sensor, 11 voltage information, 12 current information, 13 position information, 14 noise information, 15 actual Rotation speed, 16 Command rotation speed, 17 Command voltage, 18 Current phase, 19 Correction current phase, 20 Start command, 21 No correction pattern notification, 22 Abnormality notification, 25 PWM waveform information, 31 Command voltage calculation section, 32 Phase calculation section 33 Phase correction means, 34 PWM waveform generation section, 35 Noise value determination means, 36 Abnormality notification means.

Claims (14)

An inverter comprising a switching element for converting a DC voltage into an AC voltage, and rotating the motor by the AC voltage;
An electric quantity detection means for detecting an electric quantity supplied to the inverter;
Rotational position detecting means for detecting the rotational position of the motor;
Physical quantity detection means for detecting a physical quantity indicating the state of the motor;
A control unit for controlling the operation of the switching element;
With
The controller is
Calculate the phase of the current output to the motor based on the rotational position received from the rotational position detection means (hereinafter referred to as current phase),
A motor drive device comprising: phase correction means for correcting the current phase so that the electrical quantity received from the electrical quantity detection means and the physical quantity received from the physical quantity detection means are reduced. The phase correction means corrects the current phase so that when one of the electrical quantity and the physical quantity is equal to or smaller than a predetermined threshold value and one of them is equal to or smaller than the threshold value, the other is minimized. The motor driving device according to claim 1. The controller is
Having a plurality of phase correction patterns having a phase correction amount;
In the rotational drive state of the motor when the current phase is corrected by the phase correction amount of each phase correction pattern by the phase correction unit, the electric quantity and the physical quantity are received, and the electric quantity and the electric quantity A physical quantity is stored in the corresponding phase correction pattern;
The phase correction means is the phase correction in which, in a plurality of the phase correction patterns, one of the electrical quantity and the physical quantity stored in the phase correction pattern is equal to or less than a predetermined threshold value, and the other is the smallest. The motor driving device according to claim 2, wherein the current phase is corrected based on the phase correction amount of the pattern. The motor driving apparatus according to claim 1, wherein the phase correction unit corrects the current phase so that both the electric quantity and the physical quantity are equal to or less than a predetermined threshold value. The controller is
Having a plurality of phase correction patterns having a phase correction amount;
In the rotational drive state of the motor when the current phase is corrected by the phase correction amount of each phase correction pattern by the phase correction means, the electrical quantity and the physical quantity are received,
The phase correction unit is configured to set the phase correction amount of the phase correction pattern corresponding to the electrical quantity and the physical quantity when both the electrical quantity and the physical quantity received by the control unit are equal to or less than a predetermined threshold. The motor driving device according to claim 4, wherein the current phase is corrected based on the current phase. The controller is
Physical quantity determination means for detecting that the physical quantity exceeds a predetermined threshold;
The said phase correction means is made to perform the correction | amendment operation | movement of the said current phase, when the said physical quantity determination means detects that the said physical quantity exceeded the said threshold value by the said physical quantity determination means. The motor drive device described in 1. The controller is
Comprising an electric quantity determination means for detecting that the electric quantity exceeds a predetermined threshold;
7. The current phase correction operation is performed by the phase correction unit when the electric amount determination unit detects that the electric amount exceeds the threshold value. 7. The motor drive device in any one. The motor drive device according to any one of claims 1 to 7, wherein the physical quantity detection means detects at least one of sound and vibration generated by the motor as the physical quantity. The motor drive device according to any one of claims 1 to 8, wherein the electric quantity detection means includes current detection means for detecting a current supplied to the inverter as the electric quantity. The electric quantity detection means includes current detection means for detecting a current supplied to the inverter, and voltage detection means for detecting a voltage supplied to the inverter.
The motor drive device according to any one of claims 1 to 8, wherein the control unit calculates electric power supplied to the inverter as the electric quantity based on the current and the voltage. The controller is
A timing means for generating a predetermined timing;
11. The motor according to claim 1, wherein when the timing means confirms that the timing has occurred, the phase correction means causes the current phase correction operation to be performed. 11. Drive device. The timing means is means for detecting that the motor has been initially driven, means for detecting a lapse of a predetermined time since the motor was driven, means for receiving an external signal, or detecting a predetermined time. The motor driving device according to claim 11, comprising at least one of the means. The control means includes abnormality notification means,
The abnormality notification unit notifies the outside of an abnormality when the current phase cannot be corrected by the phase correction unit. Motor drive device. The motor drive device according to claim 13, wherein the abnormality notification means notifies the abnormality by light or sound, or by stopping rotation of the motor by the inverter.

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