WO2015104821A1 - 同期電動機の駆動回路および、その駆動回路により駆動される同期電動機および、その同期電動機を用いた送風機および、その送風機を用いた空気調和機ならびに、同期電動機の駆動方法 - Google Patents
同期電動機の駆動回路および、その駆動回路により駆動される同期電動機および、その同期電動機を用いた送風機および、その送風機を用いた空気調和機ならびに、同期電動機の駆動方法 Download PDFInfo
- Publication number
- WO2015104821A1 WO2015104821A1 PCT/JP2014/050253 JP2014050253W WO2015104821A1 WO 2015104821 A1 WO2015104821 A1 WO 2015104821A1 JP 2014050253 W JP2014050253 W JP 2014050253W WO 2015104821 A1 WO2015104821 A1 WO 2015104821A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- synchronous motor
- rotor
- current
- drive circuit
- rectangular wave
- Prior art date
Links
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/10—Arrangements for controlling torque ripple, e.g. providing reduced torque ripple
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D19/00—Axial-flow pumps
- F04D19/002—Axial flow fans
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/004—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying driving speed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
- H02K29/03—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with a magnetic circuit specially adapted for avoiding torque ripples or self-starting problems
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/28—Layout of windings or of connections between windings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
- H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
- H02P27/08—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters with pulse width modulation
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/08—Arrangements for controlling the speed or torque of a single motor
- H02P6/085—Arrangements for controlling the speed or torque of a single motor in a bridge configuration
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/14—Electronic commutators
- H02P6/15—Controlling commutation time
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Definitions
- the present invention relates to a drive circuit for a synchronous motor, a synchronous motor driven by the drive circuit, a blower using the synchronous motor, an air conditioner using the blower, and a method for driving the synchronous motor.
- a synchronous motor using a permanent magnet as a rotor As an electric motor for driving a fan such as a blower or an air conditioner, a synchronous motor using a permanent magnet as a rotor has been increasingly used in order to reduce power consumption during operation.
- a driving method of the synchronous motor using such a permanent magnet the magnetic pole position of the rotor is detected, and the drive current synchronized with the magnetic pole position of the rotor is detected by using an inverter composed of semiconductor elements and electronic components.
- a rectangular wave driving method and a sine wave driving method for energizing the stator winding are common.
- the 120 ° rectangular wave drive method used when driving a three-phase synchronous motor is 120 ° forward energization ⁇ 60 ° non-energization ⁇ 120 ° reverse direction energization at a timing shifted by 60 ° for each phase ⁇
- the stator winding of any two of the three phases is energized to drive.
- such a rectangular wave driving method is compared to a sine wave driving method. This can be realized with a simple control mechanism and can contribute to cost reduction.
- a pulsating component when included in the output torque, the fan vibrates due to fluctuations in the electromagnetic excitation force in the circumferential direction, causing noise.
- the magnetic attractive force between the rotor and the stator fluctuates due to a sudden change in electromagnetic force due to the sudden change in the energization current.
- Electromagnetic excitation force may be generated and the synchronous motor main body may vibrate and generate noise.
- Noise generated by fan vibration can be suppressed by providing a member made of an elastic material such as elastomer between the fan and the output shaft of the synchronous motor to attenuate the transmission of the output torque ripple of the synchronous motor.
- a member made of an elastic material such as elastomer between the fan and the output shaft of the synchronous motor to attenuate the transmission of the output torque ripple of the synchronous motor.
- the present invention has been made in view of the above, and has a high efficiency and a drive circuit for a synchronous motor capable of suppressing vibration and noise due to electromagnetic excitation force in a radial direction when driven by a rectangular wave drive system, and
- An object of the present invention is to provide a synchronous motor driven by the drive circuit, a blower using the synchronous motor, an air conditioner using the blower, and a method for driving the synchronous motor.
- a drive circuit for a synchronous motor includes a rotor having 10 magnetic poles composed of permanent magnets and nine teeth facing the rotor.
- a synchronous motor drive circuit comprising: a stator wound with concentrated windings; and an inverter configured by bridge-connecting a plurality of switching elements; and passing a rectangular wave current through the windings
- Control means for controlling the inverter, and the control means has an electrical angle with respect to an energization phase that is a minimum current when generating a target torque of the synchronous motor. It is characterized by operating in the range of -10 ° to + 5 °.
- FIG. 1 is a cross-sectional view of the synchronous motor according to the first embodiment.
- FIG. 2 is a diagram illustrating a connection example between the synchronous motor and the drive circuit according to the first embodiment.
- FIG. 3 is a diagram illustrating an example of a winding coefficient determined by a combination of the number of poles of the rotor and the number of slots (number of windings) of the stator.
- FIG. 4 is a diagram in which two orthogonal axes (X axis and Y axis) are defined with respect to the cross section of the synchronous slot 9-slot synchronous motor.
- FIG. 5 is a diagram showing a change with respect to the rotation angle of the magnetic attraction force in the X-axis direction and the Y-axis direction shown in FIG.
- FIG. 6 is a diagram showing a Lissajous waveform showing a locus of the magnetic attraction force in the radial direction over one cycle of the sinusoidal magnetic attraction force shown in FIG.
- FIG. 7 is a diagram showing the relationship between the generated torque and the magnetic attractive force in a 10-pole 9-slot and 8-pole 9-slot synchronous motor having a concentrated winding structure.
- FIG. 8 is a diagram showing one cycle of a current-carrying current waveform flowing in the stator windings of each phase in the 120 ° rectangular wave driving method.
- FIG. 9 is a diagram showing a Lissajous waveform showing the locus of the magnetic attraction force in the radial direction over one cycle of the energized current waveform when the 8-pole 9-slot synchronous motor is driven by the 120 ° rectangular wave driving method.
- FIG. 10 is a diagram showing a Lissajous waveform showing the locus of the magnetic attraction force in the radial direction over one cycle of the energized current waveform when a 10-pole, 9-slot synchronous motor is driven by the 120 ° rectangular wave driving method.
- FIG. 11 is a cross-sectional view of a 10-pole 12-slot synchronous motor.
- FIG. 12 is a cross-sectional view of an 8-pole 12-slot synchronous motor.
- FIG. 13 is a diagram illustrating a relationship between energization start timing and generated torque in the 120 ° rectangular wave driving method.
- FIG. 14 is a diagram showing the relationship between the energization start timing and the magnetic attractive force when a 10-pole, 9-slot synchronous motor is driven by a 120 ° rectangular wave drive system.
- FIG. 15 is a diagram illustrating the amount of change in magnetic attraction force during a very short time when the energization start timing is changed using the maximum torque generation phase as a reference.
- FIG. 16 is a diagram illustrating a relationship between the energization start timing with respect to the zero cross of the induced voltage and the iron loss generated in the stator core of the synchronous motor according to the first embodiment.
- FIG. 17 shows that the central teeth of each phase are equiangularly spaced (mechanical angle 120 °) in the circumferential direction toward the axis, and three teeth for each phase are equiangularly spaced in the circumferential direction toward the axis ( It is a figure which shows the example formed with the mechanical angle of 36 degrees. 18 shows a radial magnetic attraction force over one cycle of the energized current waveform when the synchronous motor shown in FIG. 1 according to the first embodiment and the synchronous motor shown in FIG. 17 are driven by the 120 ° rectangular wave drive method. It is a figure which shows the comparative example of the Lissajous waveform which shows the locus
- FIG. 19 is a diagram illustrating an example of the blower according to the second embodiment.
- FIG. 20 is a diagram illustrating an example of the blower according to the third embodiment.
- a synchronous motor drive circuit according to an embodiment of the present invention, a synchronous motor driven by the drive circuit, a blower using the synchronous motor, and an air conditioner using the blower And a method for driving the synchronous motor will be described.
- this invention is not limited by embodiment shown below.
- FIG. 1 is a cross-sectional view of the synchronous motor according to the first embodiment.
- FIG. 1 an example in the case of a synchronous motor using a rotor 4 in which a permanent magnet is arranged facing the inner peripheral surface of the stator 1 will be described.
- stator 1 nine projecting iron cores (hereinafter referred to as “teeth”) 2 are arranged at an equal angular interval (mechanical angle 40) toward the axis 10 on an annular iron core centered on the axis 10.
- Teeth nine projecting iron cores
- Nine slots 7 are formed between the teeth 2 to accommodate the stator windings 3 wound around the teeth 2.
- Each tooth 2 is divided into three adjacent three phases (U phase, V phase, W phase; 120 ° each), and the stator winding 3 of each phase is concentratedly wound in the direction of the arrow of each slot 7. It is wound by.
- the winding direction of the stator winding 3 around each tooth 2 is opposite between adjacent teeth 2 of each phase, and is the same direction between adjacent teeth 2 between each phase.
- the teeth 2 provided on the stator 1 facing the rotor 4 are formed at equal angular intervals (mechanical angle 40 °) in the circumferential direction toward the axis 10. Therefore, the circumferential width of the tip portion (hereinafter referred to as “teeth tip portion”) 8 facing the rotor 4 of the tooth 2 and the opening portion in each slot 7 between the teeth 2 (hereinafter referred to as “slot opening portion”).
- the width in the circumferential direction of 9 is uniform over the entire circumference.
- the rotor 4 has ten pole permanent magnets 6 at equal angular intervals (mechanical angle 36 °) in the circumferential direction by alternating magnetic poles of different polarities on the outer peripheral surface of a columnar back yoke 5 centered on an axis 10. Is arranged and is rotatably arranged inside each tooth 2 so as to face the stator 1.
- the permanent magnet 6 for example, a relatively inexpensive and low magnetic force material such as a ferrite magnet is used. Yes.
- positioned the tile-shaped sintered magnet on the surface of the magnetic back yoke 5 as the permanent magnet 6 is shown, using the material which mixed resin and magnetic powder, A bond magnet formed in a ring shape may be used.
- FIG. 2 is a diagram illustrating a connection example between the synchronous motor and the drive circuit according to the first embodiment.
- the drive circuit 100 for driving the synchronous motor according to the present embodiment is supplied with DC power from a DC power supply 400, and a plurality of switching elements 201a, 201b, 201c, 201d, 201e, and 201f are full.
- the inverter 200 is configured to be bridge-connected, and includes a control unit 300 that controls the switching elements 201a, 201b, 201c, 201d, 201e, and 201f that configure the inverter 200.
- the control means 300 sequentially applies a constant voltage to each phase stator winding 3 in accordance with the magnetic pole position of the rotor 4, that is, in synchronization with the induced voltage generated in each phase stator winding 3.
- the inverter 200 is controlled so that the synchronous motor is driven by a 120 ° rectangular wave driving method in which a rectangular wave current is supplied.
- the present invention is not limited by the adjustment method of the voltage applied to the stator winding 3 of each phase of the synchronous motor, for example, each switching element 201a, 201b, 201c, 201d, 201e.
- 201f may be used for high-frequency switching control, and a method called PWM (Pulse Width Modulation) that adjusts the time width of energization / non-energization may be used, or a method of adjusting the DC bus voltage output from the DC power supply 400 may be used. May be.
- PWM Pulse Width Modulation
- a “winding coefficient” calculated from an angle occupied by one magnetic pole and an angle occupied by one tooth in the circumferential direction is often used as a performance index.
- FIG. 3 is a diagram showing an example of a winding coefficient determined by a combination of the number of rotor poles and the number of stator slots (number of windings).
- the combination of an 8-pole or 10-pole rotor and a 9-slot stator has the largest winding coefficient. That is, by using a synchronous motor having a combination of 8 poles, 9 slots or 10 poles, 9 slots, higher efficiency can be achieved than when using a synchronous motor of another combination example shown in FIG.
- FIG. 4 is a diagram in which two orthogonal axes (X axis and Y axis) are defined with respect to the cross section of the synchronous slot 9-slot synchronous motor.
- FIG. 5 is a diagram showing a change with respect to the rotation angle of the magnetic attraction force in the X-axis direction and the Y-axis direction shown in FIG. 4 when an 8-pole 9-slot synchronous motor is driven by a sine wave drive method.
- the magnetic attraction force generated in the rotor 1 when the rotor 4 rotates in the X axis direction and the Y axis direction shown in FIG. .
- a sinusoidal wave current is applied to the stator winding 3 of the synchronous motor with 8 poles and 9 slots, and the rotor 4 rotates counterclockwise as indicated by the solid line arrow in FIG.
- An example is shown in which a torque is generated by passing a sinusoidal current through the phase stator winding 3, and the rotor rotates counterclockwise as indicated by a solid arrow in the figure.
- FIG. 6 is a diagram showing a Lissajous waveform showing the locus of the magnetic attraction force in the radial direction over one cycle of the sinusoidal magnetic attraction force shown in FIG.
- the radial magnetic attraction force that draws a circular locus in accordance with the rotation of the rotor 4 changes the direction with a substantially constant force. Occur. That is, when the synchronous motor is driven by the sine wave driving method, the change in the magnetic attractive force in the radial direction is extremely small.
- FIG. 7 is a graph showing the relationship between the generated torque and the magnetic attractive force in a 10-pole 9-slot and 8-pole 9-slot synchronous motor having a concentrated winding structure.
- the relative value of the magnetic attractive force is obtained by using the permanent magnet 6 having the same shape and the same shape of the stator 1 in the 10-pole 9-slot synchronous motor and the 8-pole 9-slot synchronous motor. The example which compared these is shown.
- the magnetic attractive force increases as the generated torque increases.
- the magnetism of the 10-pole 9-slot synchronous motor The attractive force is smaller than the magnetic attractive force of the 8-pole 9-slot synchronous motor, specifically, 1/4 or less of the magnetic attractive force of the 8-pole 9-slot synchronous motor.
- a synchronous motor with a relatively small output is provided with a position detection sensor capable of detecting the position of the stator such as a magnetic pole sensor, and is synchronized with the signal output from the position detection sensor to the stator winding of each phase.
- a so-called rectangular wave driving system that drives by switching energization is used.
- the current supplied to the synchronous motor has a rectangular wave shape.
- Such a rectangular wave driving method can be realized with a simple control mechanism as compared with the sine wave driving method, and can contribute to cost reduction.
- the stator of each phase is synchronized with the induced voltage generated in the stator winding 3 of each phase.
- a synchronous motor is driven by a 120 ° rectangular wave driving method in which a constant voltage is sequentially applied to each winding 3 and a rectangular wave current is applied.
- FIG. 8 is a diagram showing one cycle of a current-carrying current waveform flowing in the stator windings of each phase in the 120 ° rectangular wave driving method.
- 120 ° forward energization 120 ° to 240 °
- 60 ° non-energization 240 ° to 320 °
- 120 ° reverse energization 320 ° to 60 °
- 60 ° non-energization 60 ° to 120 °
- the rotor 4 is synchronously rotated by energizing the stator winding 3 of any two of the three phases.
- the energization current changes abruptly when switching between energization / non-energization.
- FIG. 9 is a diagram showing a Lissajous waveform showing a locus of magnetic attraction force in the radial direction over one cycle of an energized current waveform when an 8-pole 9-slot synchronous motor is driven by a 120 ° rectangular wave drive system.
- FIG. 10 is a diagram showing a Lissajous waveform showing a locus of magnetic attraction force in the radial direction over one cycle of the energized current waveform when a 10-pole, 9-slot synchronous motor is driven by a 120 ° rectangular wave drive system.
- the example shown in FIGS. 9 and 10 shows an example in which the locus of the magnetic attractive force in the radial direction over one cycle of the energized current waveform in the 120 ° rectangular wave driving method is obtained by magnetic field analysis.
- FIG. 11 is a cross-sectional view of a 10-pole 12-slot synchronous motor.
- the winding coefficient is the second highest after the 10-pole 9-slot and 8-pole 9-slot synchronous motor, as shown in FIG.
- the coil end is reduced by dispersing the windings with a large number of slots, the flatter the motor shape is, the more suitable for higher efficiency.
- stator windings 3 of each phase are generally concentrated at two locations facing each other with respect to the axis 10 of the rotor 4. Therefore, as indicated by the arrows in the drawing, for each phase, the permanent magnet 6 of the rotor 4 and the teeth 2 around which the stator winding 3 of each phase is wound are attracted and repelled.
- Force hereinafter referred to as “magnetic attraction / repulsion force”
- an elliptical magnetic attraction / repulsion force acts on the stator 1.
- the stator 1 is easily deformed and vibrated into an elliptical shape.
- magnetic attraction / repulsion force generated between the permanent magnet 6 of the rotor 4 and the teeth 2 around which the U-phase stator winding 3 is wound is illustrated.
- FIG. 12 is a cross-sectional view of an 8-pole 12-slot synchronous motor. Also in the example shown in FIG. 12, the magnetic attraction / repulsive force generated between the permanent magnet 6 of the rotor 4 and the teeth 2 around which the U-phase stator winding 3 is wound is illustrated. In the 8-pole 12-slot synchronous motor shown in FIG. 12, the stator windings 3 for each phase are distributed at 90 ° intervals for each phase and arranged at four locations, and the magnetic force acting on the stator 1 is arranged.
- the electromagnetic excitation force in the radial direction is uniform when the energized current waveform is switched between energized and de-energized.
- the noise of the natural vibration frequency due to the electromagnetic excitation force in the radial direction is also reduced.
- the 8-pole 12-slot synchronous motor is disadvantageous in terms of efficiency because it has a lower winding coefficient than other pole / slot combinations.
- FIG. 13 is a diagram illustrating a relationship between energization start timing and generated torque in the 120 ° rectangular wave driving method.
- a constant voltage is sequentially applied to the stator windings 3 of each phase in synchronization with the induced voltage generated in the stator windings 3 of each phase.
- the magnitude of the generated torque changes depending on the timing (phase) at which current is applied to the induced voltage.
- the energization is started at a timing advanced by 30 ° from the zero cross of the induced voltage as shown in FIG.
- the energization start timing deviates ⁇ 10 ° from the maximum torque generation phase, it is 98% or more of the generated torque in the maximum torque generation phase, and the energization start timing is ⁇ 5 ° from the maximum torque generation phase. In this range, since it becomes 99.5% or more with respect to the generated torque in the maximum torque generating phase, the characteristic of the synchronous motor is not greatly affected.
- FIG. 14 is a diagram showing the relationship between the energization start timing and the magnetic attractive force when a 10-pole, 9-slot synchronous motor is driven by a 120 ° rectangular wave drive system.
- the vertical axis indicates the magnetic attractive force
- the horizontal axis indicates the electrical angle.
- the magnetic attraction force has an electrical angle of 60 °. And it fluctuates greatly around the electrical angle of 120 °. When such a sudden change in the magnetic attractive force occurs, this fluctuation becomes a radial electromagnetic excitation force, which becomes a factor in generating vibration and noise of the synchronous motor.
- FIG. 15 is a diagram showing the amount of change in magnetic attraction force in a very short time when the energization start timing is changed using the maximum torque generation phase as a reference.
- the maximum torque generation phase as a reference, when the energization start timing is in the range from ⁇ 10 ° to + 5 °, the difference from the amount of change in magnetic attraction force in the maximum torque generation phase is extremely small.
- the allowable range of the energization start timing is within a range from ⁇ 10 ° to + 5 ° with respect to the maximum torque generation phase, fluctuations in the magnetic attractive force can be suppressed, and vibrations generated from the synchronous motor main body can be suppressed. And noise can be suppressed.
- the low-vibration and low-noise synchronous motor when generating the target torque, is operated by operating the energization phase in the range from -10 ° to + 5 ° with respect to the energization phase at which the current is minimized. Can be realized.
- FIG. 16 is a diagram illustrating a relationship between the energization start timing with respect to the zero cross of the induced voltage and the iron loss generated in the stator core of the synchronous motor according to the first embodiment.
- the vertical axis indicates the iron loss ratio based on the iron loss when the energization is started at a timing advanced by 30 ° from the above-described maximum torque generation phase, that is, the zero cross of the induced voltage. .
- the iron loss generated in the iron core of the stator 1 is caused by energizing a rectangular wave current to the magnetic flux generated from the permanent magnet 6 of the rotor 4 by advancing the energization start timing. Since the effect of canceling out by the magnetic flux generated in the stator winding 3 (effect of field weakening) is obtained, the magnetic flux density of the iron core of the stator 1 is reduced, and the generated iron loss is reduced. On the other hand, as described with reference to FIG. 13, when the energization start timing is advanced with respect to the maximum torque generation phase, the generated torque is reduced. It is necessary to increase the energization current to the phase stator winding 3.
- the efficiency of the synchronous motor can be improved by reducing the iron loss generated in the iron core of the stator 1 or the balance between the copper loss and the iron loss. Thereby, the fall of the efficiency of a synchronous motor can be suppressed.
- the target torque By generating a low-vibration and low-noise synchronous motor by operating in the range from -10 ° to + 5 ° with respect to the energization phase at which the current is minimized, the target torque can be reduced.
- a synchronous motor that is advantageous in terms of efficiency can be realized by operating in a range from 0 ° to + 5 ° with respect to the energization phase at which the current is minimized.
- the teeth 2 provided on the stator 1 facing the rotor 4 are spaced at equal angular intervals (mechanical angles 40) toward the axis 10 in the circumferential direction. Therefore, if the circumferential width of the tooth tip 8 is uniform over the entire circumference, the circumferential width of each slot opening 9 between the teeth 2 is also uniform over the entire circumference.
- FIG. 17 shows that the center teeth of each phase are equiangularly spaced (mechanical angle 120 °) in the circumferential direction toward the axis 10, and three teeth for each phase are equiangular in the circumferential direction toward the axis 10. It is a figure which shows the example formed with the space
- the winding coefficient can be set to 1.000, and the magnetic flux generated by the permanent magnet 6 of the rotor 4 can be linked to the stator winding 3 more effectively.
- a highly efficient synchronous motor can be realized.
- FIG. 17 shows a radial magnetic attraction force over one cycle of the energized current waveform when the synchronous motor shown in FIG. 1 according to the first embodiment and the synchronous motor shown in FIG. 17 are driven by the 120 ° rectangular wave drive method. It is a figure which shows the comparative example of the Lissajous waveform which shows the locus
- the example shown in FIG. 18 shows an example in which the locus of the magnetic attraction force in the radial direction over one cycle of the energization current waveform in the 120 ° rectangular wave driving method is obtained by magnetic field analysis.
- the radial magnetic attractive force (the locus indicated by the broken line in the figure) of the synchronous motor having the structure shown in FIG. 17 is the same as that of the 8-pole 9-slot synchronous motor shown in FIG.
- the range of change in the magnetic attractive force in the radial direction is large and a large electromagnetic excitation force is generated.
- the possibility of vibration and noise from the motor body increases.
- the teeth 2 provided on the stator 1 facing the rotor 4 are formed at equal angular intervals (mechanical angle 40 °) in the circumferential direction toward the axial center, and the slot openings 9 between the teeth 2 are formed.
- the circumferential width is preferably uniform over the entire circumference.
- the synchronous motor driven by the drive circuit, and the synchronous motor drive method the 10-pole 9-slot winding coefficient is relatively high.
- the energization phase of the rectangular wave current is compared to the energization phase that is the minimum current when generating the target torque. Since the electrical angle is within the range of ⁇ 10 ° to + 5 °, the generation of the electromagnetic excitation force in the radial direction can be suppressed without greatly changing the magnetic attraction force when switching between energization and non-energization. Therefore, vibration and noise generated from the synchronous motor main body can be suppressed, and noise can be reduced.
- the rectangular wave drive method does not require the control means to be configured using a high-performance microcomputer, etc., so the cost of the control means can be reduced.
- the circuit configuration can be simplified, the size can be reduced. For this reason, the cost increase of the system including the synchronous motor and the control means can be suppressed, and the size can be reduced.
- FIG. 19 is a diagram illustrating an example of the blower according to the second embodiment.
- the outdoor unit of the air conditioner is shown as an example of a blower to which the synchronous motor according to the first embodiment is applied, and the front view of the outdoor unit of the air conditioner (FIG. 19A) and A cross-sectional view (FIG. 19B) is shown.
- An outdoor unit 500 of an air conditioner shown in FIG. 19 uses the 10-pole 9-slot synchronous motor 502 driven by the rectangular wave driving method described in Embodiment 1 as a synchronous motor that drives a fan 501 in the form of a propeller. ing. Further, a vibration isolating member 503 is attached to an attachment portion between the fan 501 and the output shaft of the synchronous motor 502 and an attachment portion between the synchronous motor 502 and the casing of the outdoor unit 500.
- the synchronous motor 502 having 10 poles and 9 slots has a high winding coefficient and high efficiency, so that the power consumption of the outdoor unit 500 can be reduced.
- the power consumption of the harmony machine can be reduced.
- the synchronous motor 502 When the synchronous motor 502 is driven by the rectangular wave driving method, the torque is reduced at the moment when the energized phase is switched. When this torque fluctuation (torque ripple) is transmitted to the fan 501, the fan 501 rotates while vibrating due to the torque ripple of the synchronous motor 502, and noise is generated. In this embodiment, the fan 501 and the synchronous motor 502 are rotated. Since the anti-vibration member 503 is attached to the attachment portion with the output shaft to attenuate the vibration, noise generated from the fan 501 can be suppressed.
- the vibration isolating member 503 is also attached to the attachment portion between the synchronous motor 502 and the casing of the outdoor unit 500 so as to have a vibration isolating structure, which is caused by the torque ripple of the synchronous motor 502 propagating to the casing of the outdoor unit 500. Vibration can be attenuated and noise generated from the casing of the outdoor unit 500 can be suppressed.
- a 10-pole, 12-slot or 8-pole, 9-slot synchronous motor when driven by a rectangular wave drive method, as described in Embodiment 1, switching between energization / non-energization of the energization current waveform is abrupt.
- the magnetic attractive force fluctuates, a large radial electromagnetic excitation force is generated and natural vibration is generated, and noise generated from the synchronous motor main body is large due to the natural vibration.
- the outdoor unit 500 of the present embodiment uses a 10-pole 9-slot synchronous motor 502 with small fluctuations in magnetic attractive force in switching between energization / non-energization of the energization current waveform even when driven by the rectangular wave driving method,
- By switching the energization phase of the rectangular wave current within the range of -10 ° to + 5 ° in electrical angle with respect to the energization phase that is the minimum current when generating the target torque switching between energization / non-energization
- the generated radial electromagnetic excitation force can be reduced, and noise generated from the main body of the synchronous motor 502 can be suppressed.
- the vibration and noise due to the electromagnetic excitation force in the radial direction when driven by the high-efficiency and rectangular wave driving method described in the first embodiment Since the propeller-type fan of the outdoor unit of the air conditioner is driven using a synchronous motor that can be suppressed, the outdoor unit that consumes less power and can reduce noise, and this outdoor unit is The air conditioner used can be realized, and further, the outdoor unit and the air conditioner can be reduced in cost and size.
- vibration and noise of the outdoor unit of the air conditioner are mainly generated from the refrigerant compressor, but depending on the operating conditions, the operating frequency of the compressor may be lowered or stopped. In some cases, in this case, vibration and noise generated from a blower configured as an outdoor unit may be conspicuous. In addition, since the output required for the blower is large compared to the indoor unit, when an electromagnetic excitation force is generated, a large electromagnetic excitation force is generated according to the output of the synchronous motor. When vibration and noise occur, it becomes a problem as vibration and noise of the outdoor unit.
- blower of the present embodiment can suppress vibration and noise generated from the synchronous motor main body, it is possible to realize a highly efficient, low vibration and low noise air conditioner while being low in cost.
- FIG. 20 is a diagram illustrating an example of the blower according to the third embodiment.
- the indoor unit of the air conditioner is illustrated as an example of a blower to which the synchronous motor according to the first embodiment is applied, and a front view of the indoor unit of the air conditioner is illustrated.
- An indoor unit 600 of an air conditioner shown in FIG. 20 includes a 10-pole 9-slot synchronous motor 602 driven by the rectangular wave driving method described in Embodiment 1 as a synchronous motor that drives a fan 601 in a line flow configuration. Used.
- a vibration isolation member 603 is attached to an attachment portion between the fan 601 and the output shaft of the synchronous motor 602 and an attachment portion between the synchronous motor 602 and the casing of the indoor unit 600.
- the 10-pole, 9-slot synchronous motor 602 has a high winding coefficient and high efficiency, so that power consumption of the indoor unit 600 can be reduced.
- the power consumption of the harmony machine can be reduced.
- the vibration isolating member 603 is attached to the attachment portion between the fan 601 and the output shaft of the synchronous motor 602 to reduce the vibration, noise generated from the fan 601 can be suppressed. it can. Further, since the vibration isolating member 603 is also attached to the attachment portion between the synchronous motor 602 and the casing of the indoor unit 600 to form a vibration isolating structure, it is caused by the torque ripple of the synchronous motor 602 propagating to the casing of the indoor unit 600. Vibration can be attenuated and noise generated from the housing of the indoor unit 600 can be suppressed.
- a 10-pole, 12-slot or 8-pole, 9-slot synchronous motor when driven by a rectangular wave drive method, as described in Embodiment 1, switching between energization / non-energization of the energization current waveform is abrupt.
- the magnetic attractive force fluctuates, a large radial electromagnetic excitation force is generated and natural vibration is generated, and noise generated from the synchronous motor main body is large due to the natural vibration.
- the indoor unit 600 of the present embodiment uses a 10-pole 9-slot synchronous motor 602 that has a small fluctuation in magnetic attraction force in switching between energization / non-energization of the energization current waveform even when driven by the rectangular wave driving method,
- the electrical angle is within the range of -10 ° to + 5 °. Radial electromagnetic excitation force generated in energization switching can be reduced, and noise generated from the main body of the synchronous motor 602 can be suppressed.
- the sine wave drive method in order to suppress the noise generated from the 10-pole 12-slot or 8-pole 9-slot synchronous motor main body, it is necessary to drive by the sine wave drive method, but as described above, the sine wave drive method is realized. In order to achieve this, for example, a very advanced control technique such as vector control is required. Therefore, it is necessary to configure the control means using a microcomputer capable of advanced waveform generation processing, which increases the cost and size of the control means. Will lead to a change. In indoor unit 600 of this embodiment, by using synchronous motor 602 having 10 poles and 9 slots, noise generated from the main body of synchronous motor 602 can be suppressed even when driven by a rectangular wave driving method. The control means can be configured at a lower cost than the configuration driven by the sine wave driving method.
- the vibration / noise caused by the electromagnetic excitation force in the radial direction when driven by the high-efficiency and rectangular wave driving method described in the first embodiment since the air conditioner indoor unit line-flow fan is driven using a controllable synchronous motor, the indoor unit consumes less power and can be reduced in noise. It is possible to realize an air conditioner using the above, and it is possible to reduce the cost and size of these indoor units and air conditioners.
- the vibration and noise of the indoor unit of the air conditioner are dominated by the vibration and noise generated from the fan or the synchronous motor.
- the indoor unit of the air conditioner installed indoors is required to be quiet.
- blower of the present embodiment can suppress vibration and noise generated from the synchronous motor main body, it is possible to realize a highly efficient, low vibration and low noise air conditioner while being low in cost.
- the synchronous motor described in the first embodiment is driven by the rectangular wave driving method, both high efficiency and low noise can be achieved, and a product group that requires energy saving and low cost. It is possible to ensure the compatibility of the drive circuit of the synchronous motor with the low-priced product group that is required, and it is possible to share the drive circuit. Furthermore, by using an inexpensive one-chip IC or the like Since the control means can be configured and the size can be reduced, the synchronous motor can be easily built in the housing.
- the configuration shown in the above embodiment is an example of the configuration of the present invention, and can be combined with another known technique, and a part thereof is omitted without departing from the gist of the present invention. Needless to say, it is possible to change the configuration.
- the present invention is useful for a three-phase synchronous motor using a permanent magnet as a rotor, and is particularly suitable for a configuration in which a 10-pole, 9-slot synchronous motor is driven by a rectangular wave system.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
- Synchronous Machinery (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
Description
図1は、実施の形態1にかかる同期電動機の横断面図である。本実施の形態では、図1に示すように、固定子1の内周面に対向して永久磁石を配置した回転子4を用いた同期電動機である場合の例について説明する。
図19は、実施の形態2にかかる送風機の一例を示す図である。図19に示す例では、空気調和機の室外機を、実施の形態1にかかる同期電動機を適用した送風機の一例として示し、この空気調和機の室外機の正面図(図19(a))および横断面図(図19(b))を示している。
図20は、実施の形態3にかかる送風機の一例を示す図である。図20に示す例では、空気調和機の室内機を、実施の形態1にかかる同期電動機を適用した送風機の一例として示し、この空気調和機の室内機の正面図を示している。
Claims (9)
- 永久磁石により構成される10極の磁極を有する回転子と、前記回転子に対向する9つのティースに巻線が集中巻きで巻回された固定子と、を備える同期電動機の駆動回路であって、
複数のスイッチング素子がブリッジ接続されて構成されるインバータと、
前記巻線に矩形波状の電流を通電するように前記インバータを制御する制御手段と、
を備え、
前記制御手段は、
前記電流の通電位相を、当該同期電動機の目標トルクを発生させる際に最小電流となる通電位相に対して、電気角で-10°から+5°の範囲で運転する
ことを特徴とする同期電動機の駆動回路。 - 永久磁石により構成される10極の磁極を有する回転子と、前記回転子に対向する9つのティースに巻線が集中巻きで巻回された固定子と、を備える同期電動機の駆動回路であって、
複数のスイッチング素子がフルブリッジ接続されて構成されるインバータと、
前記巻線に矩形波状の電流を通電するように前記インバータを制御する制御手段と、
を備え、
前記制御手段は、
前記電流の通電位相を、当該同期電動機の目標トルクを発生させる際に最小電流となる通電位相に対して、電気角で0°から+5°の範囲で運転する
ことを特徴とする同期電動機の駆動回路。 - 前記目標トルクを発生させる際に最小電流となる通電位相は、前記巻線に発生する誘起電圧のゼロクロスに対して、電気角で+30°であることを特徴とする請求項1または2に記載の同期電動機の駆動回路。
- 請求項1から3のいずれか一項に記載の同期電動機の駆動回路により駆動されることを特徴とする同期電動機。
- 前記ティースは、前記回転子の軸心に向かって周方向に等角度間隔で形成され、隣り合う前記ティースの間に形成されるスロットの開口部の周方向幅が全周において均一であることを特徴とする請求項4に記載の同期電動機。
- 請求項4または5に記載の同期電動機を用いたことを特徴とする送風機。
- 請求項6に記載の送風機を用いたことを特徴とする空気調和機。
- 永久磁石により構成される10極の磁極を有する回転子と、前記回転子に対向する9つのティースに巻線が集中巻きで巻回された固定子と、を備え、前記巻線に矩形波状の電流を通電することにより駆動される同期電動機の駆動方法であって、
前記電流の通電位相を、当該同期電動機の目標トルクを発生させる際に最小電流となる通電位相に対して、電気角で-10°から+5°の範囲で運転する
ことを特徴とする同期電動機の駆動方法。 - 永久磁石により構成される10極の磁極を有する回転子と、前記回転子に対向する9つのティースに巻線が集中巻きで巻回された固定子と、を備え、前記巻線に矩形波状の電流を通電することにより駆動される同期電動機の駆動回路であって、
前記電流の通電位相を、当該同期電動機の目標トルクを発生させる際に最小電流となる通電位相に対して、電気角で0°から+5°の範囲で運転する
ことを特徴とする同期電動機の駆動方法。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2014/050253 WO2015104821A1 (ja) | 2014-01-09 | 2014-01-09 | 同期電動機の駆動回路および、その駆動回路により駆動される同期電動機および、その同期電動機を用いた送風機および、その送風機を用いた空気調和機ならびに、同期電動機の駆動方法 |
CN201480072207.8A CN105874704B (zh) | 2014-01-09 | 2014-01-09 | 同步电动机、其驱动电路、鼓风机、以及空调机 |
US15/110,142 US9923493B2 (en) | 2014-01-09 | 2014-01-09 | Drive circuit for synchronous motor, synchronous motor driven by drive circuit, air blower including synchronous motor, air conditioner including air blower, and method of driving synchronous motor |
JP2015556679A JP6270876B2 (ja) | 2014-01-09 | 2014-01-09 | 同期電動機の駆動回路および、その駆動回路により駆動される同期電動機および、その同期電動機を用いた送風機および、その送風機を用いた空気調和機 |
CN201420818413.6U CN204349847U (zh) | 2014-01-09 | 2014-12-22 | 同步电动机的驱动电路、同步电动机、鼓风机和空调机 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2014/050253 WO2015104821A1 (ja) | 2014-01-09 | 2014-01-09 | 同期電動機の駆動回路および、その駆動回路により駆動される同期電動機および、その同期電動機を用いた送風機および、その送風機を用いた空気調和機ならびに、同期電動機の駆動方法 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2015104821A1 true WO2015104821A1 (ja) | 2015-07-16 |
Family
ID=53233086
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2014/050253 WO2015104821A1 (ja) | 2014-01-09 | 2014-01-09 | 同期電動機の駆動回路および、その駆動回路により駆動される同期電動機および、その同期電動機を用いた送風機および、その送風機を用いた空気調和機ならびに、同期電動機の駆動方法 |
Country Status (4)
Country | Link |
---|---|
US (1) | US9923493B2 (ja) |
JP (1) | JP6270876B2 (ja) |
CN (2) | CN105874704B (ja) |
WO (1) | WO2015104821A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI728474B (zh) * | 2018-09-21 | 2021-05-21 | 日商日本製鐵股份有限公司 | 電氣機器內之鐵心的激磁系統、電氣機器內之鐵心的激磁方法、程式及逆變器電源的調變動作設定裝置 |
US20230029076A1 (en) * | 2021-07-13 | 2023-01-26 | Sungrow Power Supply Co., Ltd. | Fan assembly and inverter |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106663970A (zh) * | 2014-08-01 | 2017-05-10 | 比亚乔及C.股份公司 | 永磁电动机和发电机以及机车中包括该永磁电动机和发电机的混合马达 |
US9698642B1 (en) * | 2015-09-02 | 2017-07-04 | X Development Llc | Motor with multi-phase windings and series-stacked inverter |
US10326323B2 (en) | 2015-12-11 | 2019-06-18 | Whirlpool Corporation | Multi-component rotor for an electric motor of an appliance |
US10704180B2 (en) | 2016-09-22 | 2020-07-07 | Whirlpool Corporation | Reinforcing cap for a tub rear wall of an appliance |
US10784733B2 (en) * | 2016-10-05 | 2020-09-22 | Mitsubishi Electric Corporation | Motor and air conditioning apparatus |
CN207021795U (zh) * | 2017-05-17 | 2018-02-16 | 蔚来汽车有限公司 | 电机定子组件、电机及具有其的电动汽车 |
US10693336B2 (en) | 2017-06-02 | 2020-06-23 | Whirlpool Corporation | Winding configuration electric motor |
JP7200240B2 (ja) * | 2017-12-27 | 2023-01-06 | 安徽美芝精密制造有限公司 | 永久磁石モーター及びコンプレッサー |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007189808A (ja) * | 2006-01-12 | 2007-07-26 | Mitsubishi Electric Corp | 車両用発電電動機の制御装置 |
JP2007259541A (ja) * | 2006-03-22 | 2007-10-04 | Mitsubishi Electric Corp | 永久磁石式電動機 |
JP2010239767A (ja) * | 2009-03-31 | 2010-10-21 | Panasonic Corp | モータ駆動装置および圧縮機および冷蔵庫 |
Family Cites Families (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH088764B2 (ja) | 1985-11-08 | 1996-01-29 | 株式会社日立製作所 | 永久磁石界磁形ブラシレスモ−タ |
JPH0365094A (ja) * | 1989-08-03 | 1991-03-20 | Secoh Giken Inc | トルクリプルを除去したリラクタンス型電動機 |
JP2743918B2 (ja) | 1996-12-27 | 1998-04-28 | 株式会社日立製作所 | 永久磁石界磁形ブラシレスモータ |
WO2003084034A1 (fr) * | 2002-03-29 | 2003-10-09 | Matsushita Electric Industrial Co., Ltd. | Moteur |
JP4341266B2 (ja) * | 2003-03-17 | 2009-10-07 | パナソニック株式会社 | ブラシレスdcモータの駆動方法及びその装置 |
EP1487089A3 (en) * | 2003-06-13 | 2005-04-27 | Matsushita Electronics Corporation | Permanent magnet motor |
JP4468740B2 (ja) | 2003-06-13 | 2010-05-26 | パナソニック株式会社 | モータ |
US7155804B2 (en) * | 2003-09-17 | 2007-01-02 | Moog Inc. | Method of forming an electric motor |
JP4589093B2 (ja) * | 2004-12-10 | 2010-12-01 | 日立オートモティブシステムズ株式会社 | 同期モータ駆動装置及び方法 |
US7342379B2 (en) * | 2005-06-24 | 2008-03-11 | Emerson Electric Co. | Sensorless control systems and methods for permanent magnet rotating machines |
US7135829B1 (en) * | 2005-08-10 | 2006-11-14 | Innovative Power Solutions, Llc | Methods and apparatus for controlling a motor/generator |
US7116073B1 (en) * | 2005-08-10 | 2006-10-03 | Innovative Power Solutions, Llc | Methods and apparatus for controlling a motor/generator |
EP2192670A1 (de) * | 2008-12-01 | 2010-06-02 | Siemens Aktiengesellschaft | Permanenterregte Synchronmaschine mit 10 Polen, 12 Nuten und optimierter Läufergeometrie |
GB2469129B (en) * | 2009-04-04 | 2013-12-11 | Dyson Technology Ltd | Current controller for an electric machine |
IT1399117B1 (it) * | 2010-04-01 | 2013-04-05 | Nuovo Pignone Spa | Sistema e metodo di smorzamento del modo torsionale basato su anello ad aggancio di fase |
JP5316551B2 (ja) * | 2011-01-07 | 2013-10-16 | 株式会社デンソー | 回転機の制御装置 |
CN102075128B (zh) * | 2011-01-21 | 2012-11-21 | 南京航空航天大学 | 转子磁分路混合励磁同步电机驱动系统及其电流控制方法 |
US8410737B2 (en) * | 2011-02-28 | 2013-04-02 | Deere & Company | Device and method for generating an initial controller lookup table for an IPM machine |
US9099905B2 (en) * | 2012-10-15 | 2015-08-04 | Regal Beloit America, Inc. | Radially embedded permanent magnet rotor and methods thereof |
CN104885345B (zh) * | 2013-01-24 | 2017-08-22 | 三菱电机株式会社 | 同步电动机 |
US10277099B2 (en) * | 2013-09-02 | 2019-04-30 | Mitsubishi Electric Corporation | Synchronous motor |
-
2014
- 2014-01-09 WO PCT/JP2014/050253 patent/WO2015104821A1/ja active Application Filing
- 2014-01-09 JP JP2015556679A patent/JP6270876B2/ja active Active
- 2014-01-09 CN CN201480072207.8A patent/CN105874704B/zh active Active
- 2014-01-09 US US15/110,142 patent/US9923493B2/en active Active
- 2014-12-22 CN CN201420818413.6U patent/CN204349847U/zh active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007189808A (ja) * | 2006-01-12 | 2007-07-26 | Mitsubishi Electric Corp | 車両用発電電動機の制御装置 |
JP2007259541A (ja) * | 2006-03-22 | 2007-10-04 | Mitsubishi Electric Corp | 永久磁石式電動機 |
JP2010239767A (ja) * | 2009-03-31 | 2010-10-21 | Panasonic Corp | モータ駆動装置および圧縮機および冷蔵庫 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI728474B (zh) * | 2018-09-21 | 2021-05-21 | 日商日本製鐵股份有限公司 | 電氣機器內之鐵心的激磁系統、電氣機器內之鐵心的激磁方法、程式及逆變器電源的調變動作設定裝置 |
US20230029076A1 (en) * | 2021-07-13 | 2023-01-26 | Sungrow Power Supply Co., Ltd. | Fan assembly and inverter |
Also Published As
Publication number | Publication date |
---|---|
CN105874704A (zh) | 2016-08-17 |
CN105874704B (zh) | 2018-09-07 |
JP6270876B2 (ja) | 2018-01-31 |
CN204349847U (zh) | 2015-05-20 |
US9923493B2 (en) | 2018-03-20 |
JPWO2015104821A1 (ja) | 2017-03-23 |
US20160336884A1 (en) | 2016-11-17 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6270876B2 (ja) | 同期電動機の駆動回路および、その駆動回路により駆動される同期電動機および、その同期電動機を用いた送風機および、その送風機を用いた空気調和機 | |
US9472997B2 (en) | Resilient rotor assembly for interior permanent magnet motor | |
US20100119389A1 (en) | Modular, brushless motors and applications thereof | |
JP4670871B2 (ja) | モータ | |
JP4113195B2 (ja) | 空気調和機のファンモータの速度制御システム | |
US20130057105A1 (en) | Permanent magnet motors and methods of assembling the same | |
JP2006340487A (ja) | ブラシレスモータ | |
CN106877615A (zh) | 电动机及搭载了该电动机的电气设备 | |
JP2008061485A (ja) | 交流電源で自起動可能な永久磁石型モータ | |
JP2009118706A (ja) | 磁力回転装置及びそれを用いた電力変換システム | |
JP2006060952A (ja) | 永久磁石埋込み型電動機 | |
KR20130067218A (ko) | 모터 | |
JP2013046571A (ja) | ブラシレスモータ | |
EP3291413B1 (en) | Brushless motor | |
CN110945747B (zh) | 用于轴向通量电机的模块化定子驱动单元 | |
US20130057107A1 (en) | Permanent magnet motors and methods of assembling the same | |
JP5247122B2 (ja) | 磁力回転装置及びそれを用いた電力変換システム | |
JP2007306782A (ja) | 単相モータ | |
JP2006254621A (ja) | 永久磁石型電動機 | |
JP5460807B1 (ja) | 同期電動機 | |
KR20140010055A (ko) | 평형 또는 불평형 비대칭 3상 릴럭턴스 모터 | |
US20130057104A1 (en) | Permanent magnet motors and methods of assembling the same | |
TWI587609B (zh) | Brushless DC motor | |
JP2013223395A (ja) | 誘導電動機と送風装置およびそれを搭載した電気機器 | |
US10965176B2 (en) | Electric motors with pole biasing |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 14878267 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2015556679 Country of ref document: JP Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 15110142 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: IDP00201605206 Country of ref document: ID |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 14878267 Country of ref document: EP Kind code of ref document: A1 |