WO2010082472A1 - モータ駆動装置およびこれを用いた電気機器 - Google Patents
モータ駆動装置およびこれを用いた電気機器 Download PDFInfo
- Publication number
- WO2010082472A1 WO2010082472A1 PCT/JP2010/000122 JP2010000122W WO2010082472A1 WO 2010082472 A1 WO2010082472 A1 WO 2010082472A1 JP 2010000122 W JP2010000122 W JP 2010000122W WO 2010082472 A1 WO2010082472 A1 WO 2010082472A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- motor
- frequency
- phase
- brushless
- driving
- 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
- H02P6/14—Electronic commutators
- H02P6/16—Circuit arrangements for detecting position
- H02P6/18—Circuit arrangements for detecting position without separate position detecting elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/025—Motor control arrangements
-
- 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
- H02P6/153—Controlling commutation time wherein the commutation is advanced from position signals phase in function of the speed
-
- 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
- H02P6/16—Circuit arrangements for detecting position
- H02P6/18—Circuit arrangements for detecting position without separate position detecting elements
- H02P6/188—Circuit arrangements for detecting position without separate position detecting elements using the voltage difference between the windings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/02—Compressor control
- F25B2600/021—Inverters therefor
-
- 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 motor drive device for driving a brushless DC motor and an electric device using the same.
- a conventional motor driving device drives a motor by switching to either speed feedback driving or speed open loop driving according to a current value or a driving speed.
- FIG. 12 shows a conventional motor driving apparatus described in Patent Document 1.
- the DC power source 201 inputs DC power to the inverter 202.
- the inverter 202 is configured by connecting six switching elements in a three-phase bridge.
- the inverter 202 converts the input DC power into AC power having a predetermined frequency and inputs the AC power to the brushless DC motor 203.
- the position detection unit 204 acquires information on the induced voltage generated by the rotation of the brushless DC motor 203 based on the voltage of the output terminal of the inverter 202. Based on this information, the position detector 204 detects the relative position of the rotor 203a of the brushless DC motor 203.
- the control circuit 205 receives the signal output from the position detection unit 204 and generates a control signal for the switching element of the inverter 202.
- the position calculation unit 206 calculates information on the magnetic pole position of the rotor 203a of the brushless DC motor 203 based on the signal of the position detection unit 204. Both the self-limiting driving unit 207 and the other braking / driving unit 210 output a signal indicating the timing for switching the current flowing through the three-phase winding of the brushless DC motor 203. These timing signals are signals for driving the brushless DC motor 203. These timing signals output from the self-limiting drive unit 207 are for driving the brushless DC motor 203 by feedback control, and are signals obtained based on the magnetic pole position of the rotor 203a obtained from the position calculation unit 206 and the speed command unit 213. It is.
- these timing signals output by the other braking / driving unit 210 are for driving the brushless DC motor 203 by open loop control, and are signals obtained based on the speed command unit 213.
- the selection unit 211 selects and outputs either the signal input from the self-limiting driving unit 207 or the timing signal input from the other braking / driving unit 210. That is, the selection unit 211 selects whether the brushless DC motor 203 is driven by the self-braking drive unit 207 or the other braking / driving unit 210.
- the drive control unit 212 outputs a control signal for the switching element of the inverter 202 based on the signal output from the selection unit 211.
- the conventional motor driving device switches from self-limiting driving by feedback control to other braking driving by open loop control.
- the drive range of the brushless DC motor 203 is extended from low speed driving to high speed driving, or from low load driving to high load driving.
- the conventional configuration drives the brushless DC motor 203 by open loop control when driving at high speed or high load (hereinafter referred to as high speed / high load). For this reason, when the load is small, stable driving performance can be obtained, but when the load is large, there is a problem that the driving state becomes unstable.
- the present invention solves the above-mentioned conventional problems, and extends the driving range by obtaining stable driving performance even when the brushless DC motor is driven at high speed / high load. Thus, an unstable state due to an external factor is suppressed, and a highly reliable motor driving device is provided.
- the motor drive device of the present invention is a motor drive device that drives a brushless DC motor including a rotor and a stator having a three-phase winding.
- the present invention further includes an inverter that supplies power to the three-phase winding and a terminal voltage acquisition unit that acquires the terminal voltage of the brushless DC motor.
- the present invention includes a first waveform generation unit that outputs a first waveform signal having a waveform with a conduction angle of 120 degrees to 150 degrees.
- the present invention has a frequency setting unit that sets the duty by changing only the frequency with a constant duty.
- the present invention provides a second waveform having a waveform having a predetermined relationship with the terminal voltage acquired by the terminal voltage acquisition unit and having a conduction angle of 120 degrees or more and less than 180 degrees at the frequency set by the frequency setting unit.
- a second waveform generator for outputting a signal Further, the present invention outputs a first waveform signal when the rotor speed is determined to be lower than the predetermined speed, and outputs a second waveform signal when the rotor speed is determined to be higher than the predetermined speed.
- a switching determination unit for switching is provided.
- the present invention provides a drive unit that outputs to the inverter a drive signal that indicates the supply timing of the power that the inverter supplies to the three-phase winding based on the first or second waveform signal output from the switching determination unit. Have.
- the brushless DC motor when the speed is low, the brushless DC motor is driven based on the first waveform signal having a waveform with a conduction angle of 120 degrees to 150 degrees.
- the brushless DC motor when the speed is high, the brushless DC motor is driven based on a second waveform signal having a waveform with a conduction angle of 120 degrees or more and less than 180 degrees according to the position of the rotor and the set frequency.
- the motor driving device of the present invention is stable in driving and extended in driving range even when driving at high speed / high load. As a result, it is possible to provide a highly reliable motor drive device that suppresses an unstable state due to an external factor.
- FIG. 1 is a block diagram of a motor drive device according to Embodiment 1 of the present invention.
- FIG. 2 is a timing chart of the motor driving device according to the embodiment.
- FIG. 3 is a diagram for explaining an optimum energization angle of the motor drive device according to the embodiment.
- FIG. 4 is another timing chart of the motor driving apparatus according to the embodiment.
- FIG. 5 is a diagram showing the relationship between torque and phase during synchronous driving of the brushless DC motor in the same embodiment.
- FIG. 6 is a diagram for explaining the phase relationship between the phase current and the terminal voltage of the brushless DC motor according to the embodiment.
- FIG. 7A is a diagram illustrating a phase relationship of the brushless DC motor according to the embodiment.
- FIG. 7B is a diagram illustrating another phase relationship of the brushless DC motor according to the embodiment.
- FIG. 8 is a flowchart showing the operation of the second waveform generator of the motor drive device in the same embodiment.
- FIG. 9 is a diagram showing the relationship between the rotation speed and the duty of the brushless DC motor in the embodiment.
- FIG. 10 is a timing diagram of the rotation speed and duty of the motor drive device according to the embodiment.
- FIG. 11 is a cross-sectional view of a main part of the brushless DC motor according to the embodiment.
- FIG. 12 is a block diagram of a conventional motor driving device.
- FIG. 1 is a block diagram of a motor drive device according to Embodiment 1 of the present invention.
- an AC power source 1 is a general commercial power source, and in Japan, a power source of 50 or 60 Hz with an effective value of 100V.
- the motor driving device 22 is connected to the AC power source 1 and drives the brushless DC motor 4.
- the motor drive device 22 will be described.
- the rectifying and smoothing circuit 2 rectifies and smoothes AC power into DC power using the AC power supply 1 as an input, and includes four rectifier diodes 2a to 2d connected in a bridge and smoothing capacitors 2e and 2f.
- the rectifying / smoothing circuit 2 is configured by a voltage doubler rectifying circuit, but the rectifying / smoothing circuit 2 may be configured by a full-wave rectifying circuit.
- the AC power source 1 is a single-phase AC power source, but when the AC power source 1 is a three-phase AC power source, the rectifying and smoothing circuit 2 is configured by a three-phase rectifying and smoothing circuit.
- the inverter 3 converts the DC power from the rectifying / smoothing circuit 2 into AC power.
- the inverter 3 is configured by connecting six switching elements 3a to 3f in a three-phase bridge.
- the six return current diodes 3g to 3l are connected to the switching elements 3a to 3f in the reverse direction.
- the brushless DC motor 4 includes a rotor 4a having a permanent magnet and a stator 4b having a three-phase winding.
- the brushless DC motor 4 rotates the rotor 4a when the three-phase alternating current generated by the inverter 3 flows in the three-phase winding of the stator 4b.
- the position detection unit 5 acquires the terminal voltage of the brushless DC motor 4 in the present embodiment. That is, the magnetic pole relative position of the rotor 4a of the brushless DC motor 4 is detected. Specifically, the position detector 5 detects the relative rotational position of the rotor 4a based on the induced voltage generated in the three-phase winding of the stator 4b. As another position detection method, there is a method of estimating the magnetic pole position by performing vector calculation on the detection result of the motor current (phase current or bus current).
- the position detector 5 detects the current zero cross of the phase current of the brushless DC motor 4 by, for example, acquiring the terminal voltage of the inverter 3. Specifically, the position detection unit 5 determines whether or not there is a current flowing in the return current diode (for example, the diode 3h) of the inverter 3, that is, the point at which the current flow switches from positive to negative or from negative to positive, that is, zero crossing. Detect points. The position detector 5 detects this zero cross point as the zero cross point of the phase current of the brushless DC motor 4. As described above, the position detection unit 5 detects the magnetic pole position of the brushless DC motor 4 and the zero cross point of the phase current.
- the return current diode for example, the diode 3h
- the first waveform generator 6 generates a first waveform signal for driving the switching elements 3a to 3f of the inverter 3.
- the first waveform signal is a rectangular wave signal with an energization angle of 120 degrees to 150 degrees.
- the energization angle needs to be 120 degrees or more.
- an interval of 30 degrees or more is necessary as the ON / OFF interval of the switching element. For this reason, the upper limit of the conduction angle is 150 degrees obtained by subtracting 30 degrees from 180 degrees.
- the first waveform signal may be a waveform conforming to a rectangular wave, even if it is other than a rectangular wave. For example, it is a trapezoidal wave having a slope at the rise / fall of the waveform.
- the first waveform generator 6 generates a first waveform signal based on the position information of the rotor 4a detected by the position detector 5.
- the first waveform generator 6 further performs pulse width modulation (PWM) duty control in order to keep the rotation speed constant.
- PWM pulse width modulation
- the frequency setting unit 8 sets the frequency by changing only the frequency with a constant duty.
- the frequency limiting unit 9 sets the input frequency to the second waveform generating unit. Output.
- the second waveform generator 10 generates a second waveform signal for driving the switching elements 3a to 3f of the inverter 3 based on the frequency from the frequency limiter 9 and the position information from the position detector 5. To do.
- the second waveform signal is a rectangular wave signal having a conduction angle of 120 degrees or more and less than 180 degrees. Similar to the first waveform generator 6, the brushless DC motor 4 has three-phase windings, and therefore the energization angle needs to be 120 degrees or more.
- the second waveform generator 10 does not require the on / off intervals of the switching elements, so the upper limit is set to less than 180 degrees. Considering that the position detection unit 5 detects a zero cross, an off time is appropriately provided.
- the second waveform signal may be a waveform that conforms to a rectangular wave.
- it may be a sine wave or a distorted wave.
- the duty is at or near the maximum (a constant duty of 90 to 100%).
- the speed detector 7 detects the speed (that is, the rotational speed) of the brushless DC motor 4 based on the position information detected by the position detector 5. For example, it can be easily detected by measuring a signal from the position detection unit 5 generated at a constant period.
- the switching determination unit 11 determines whether the rotation speed of the rotor 4a is low or high, and switches the waveform signal input to the drive unit 12 to the first waveform signal or the second waveform signal. Specifically, the first waveform signal is selected when the speed is low, and the second waveform signal is selected and output when the speed is high.
- the determination of whether the rotational speed is low or high can be made based on the actual speed detected by the speed detector 7.
- the determination of whether the speed is low or high can also be made based on the set rotational speed and the duty. For example, when the duty is maximum (generally 100%), the speed is maximum, and the switching determination unit 11 switches the waveform signal to the second waveform signal.
- the drive unit 12 outputs a drive signal instructing the supply timing of power supplied from the inverter 3 to the three-phase winding of the brushless DC motor 4 based on the waveform signal output from the switching determination unit 11. Specifically, the drive signal turns on or off switching elements 3a to 3f of inverter 3 (hereinafter referred to as on / off). As a result, optimum AC power is applied to the stator 4b, the rotor 4a rotates, and the brushless DC motor 4 is driven.
- the upper limit frequency setting unit 13 sets an upper limit frequency corresponding to the maximum rotation speed when the brushless DC motor 4 is driven based on the first waveform signal (that is, the rotation speed when the duty is 100%). That is, the upper limit rotational speed is set based on the maximum rotational speed, and the upper limit frequency corresponding to the upper limit rotational speed is set.
- the upper limit frequency (that is, the upper limit rotational speed of the brushless DC motor 4) is set corresponding to 1.5 times the maximum rotational speed. For example, when the maximum rotation speed is 50 r / s, the upper limit rotation speed is set as 75 r / s.
- the upper limit frequency setting unit 13 sets a frequency corresponding to the upper limit rotation speed 75 r / s as the upper limit frequency.
- the upper limit frequency is used for frequency limitation of the frequency limiting unit 9.
- This upper limit frequency is set as follows.
- the brushless DC motor 4 is driven by the frequency setting unit 8 and the second waveform generation unit 10, the brushless DC motor 4 is driven as a synchronous motor in which the rotor 4 a follows the commutation of the inverter 3. For this reason, since the rotor 4a is delayed with respect to the commutation, the phase of the induced voltage is delayed with respect to the phase of the phase current. In other words, considering the phase of the induced voltage as a reference, the brushless DC motor 4 is driven in a state where the phase of the motor phase current is advanced with respect to the phase of the induced voltage (that is, a weak magnetic flux).
- the upper limit frequency changing unit 14 first detects that a certain time (for example, 30 minutes) has passed by the driving by the second waveform generating unit 10. Next, the upper limit frequency changing unit 14 instructs the switching determination unit 11 to forcibly switch the driving of the brushless DC motor 4 from the driving by the second waveform generating unit 10 to the driving by the first waveform generating unit 6. To do. Further, the upper limit frequency changing unit 14 resets the upper limit frequency of the upper limit frequency setting unit 13.
- the position detection unit 5 detects the position of the rotor 4a by acquiring the terminal voltage of the inverter 3, for example. Specifically, the presence / absence of a current flowing in the return current diode (for example, diode 3h) of the inverter 3 is detected, that is, the point at which the current flow switches from positive to negative or from negative to positive (that is, zero cross point), The position of the rotor 4a.
- the output of the position detector 5 corresponds to outputting a signal indicating whether the terminal voltage of the inverter 3 is higher or lower than the threshold value. For this reason, the output of the position detection unit 5 can be used as a zero cross point of the induced voltage of the brushless DC motor 4 which is based on the first waveform generation unit 6.
- a refrigerator 21 will be described as an example of the electric device.
- the compressor 17 is mounted in the refrigerator 21, the rotational motion of the rotor 4a of the brushless DC motor 4 is converted into a reciprocating motion by a crankshaft (not shown).
- a piston (not shown) connected to the crankshaft reciprocates in a cylinder (not shown) to compress the refrigerant in the cylinder. That is, the compressor 17 is configured by the brushless DC motor 4 and the crankshaft, piston, and cylinder.
- the compression method (mechanism method) of the compressor 17 an arbitrary method such as a rotary type or a scroll type is used.
- the case of the reciprocating type will be described.
- the reciprocating compressor 17 has a large inertia. For this reason, when the brushless DC motor 4 of the compressor 17 is driven synchronously, the drive of the compressor 17 is stabilized.
- the refrigerant used for the compressor 17 is generally R134a or the like, but in the present embodiment, R600a is used as the refrigerant.
- R600a has a lower global warming potential than R134a, but has a low refrigeration capacity.
- the compressor 17 is constituted by a reciprocating compressor, and the cylinder volume is increased in order to ensure the refrigerating capacity. Since the compressor 17 having a large cylinder volume has a large inertia, the brushless DC motor 4 is rotated by the inertia even when the power supply voltage is lowered. As a result, fluctuations in the rotational speed are reduced, and more stable synchronous driving is possible. However, since the compressor 17 with a large cylinder volume has a large load, it is difficult to drive with the conventional motor drive device.
- the motor drive device 22 according to the present embodiment is optimal for driving the compressor 17 using R600a because the drive range particularly at high loads is expanded.
- the refrigerant compressed by the compressor 17 constitutes a refrigeration cycle that passes through the condenser 18, the decompressor 19, and the evaporator 20 in this order and returns to the compressor 17 again. At this time, since the condenser 18 radiates heat and the evaporator 20 absorbs heat, cooling and heating can be performed.
- a refrigerator 21 is configured with this refrigeration cycle.
- an air conditioner is provided with a blower in the condenser 18 or the evaporator 20.
- FIG. 2 is a timing chart of the motor driving device 22 in the present embodiment.
- FIG. 2 is a timing diagram of signals for driving the inverter 3 at a low speed.
- the signal for driving the inverter 3 is a drive signal output from the drive unit 12 in order to turn on / off the switching elements 3a to 3f of the inverter 3.
- the drive signal is obtained based on the first waveform signal.
- the first waveform signal is output from the first waveform generator 6 based on the output of the position detector 5.
- signals U, V, W, X, Y, and Z are drive signals for turning on / off the switching elements 3a, 3c, 3e, 3b, 3d, and 3f, respectively.
- Waveforms Iu, Iv, and Iw are respectively U-phase, V-phase, and W-phase current waveforms of the winding of the stator 4b.
- commutation is sequentially performed in intervals of 120 degrees based on a signal from the position detection unit 5.
- the signals U, V, and W perform duty control by PWM control.
- Waveforms Iu, Iv, and Iw, which are U-phase, V-phase, and W-phase current waveforms, are sawtooth waveforms as shown in FIG. In this case, commutation is performed at an optimal timing based on the output of the position detector 5. For this reason, the brushless DC motor 4 is driven most efficiently.
- FIG. 3 is a diagram for explaining an optimum energization angle of the motor drive device 22 in the present embodiment.
- FIG. 3 shows the relationship between the energization angle at low speed and the efficiency.
- line A shows circuit efficiency
- line B shows motor efficiency
- line C shows total efficiency (product of circuit efficiency A and motor efficiency B).
- the motor efficiency B is improved. This is because the effective value of the phase current of the motor decreases (that is, the power factor increases) and the motor efficiency B increases as the copper loss of the motor decreases as the conduction angle increases.
- the circuit efficiency A decreases. From the relationship between the circuit efficiency A and the motor efficiency B, there is a conduction angle at which the overall efficiency C is the best. In the present embodiment, 130 degrees is the conduction angle at which the overall efficiency C is the best.
- FIG. 4 is a timing chart of the motor drive device 22 in the present embodiment.
- FIG. 4 is a timing diagram of drive signals for driving the inverter 3 at high speed.
- the drive signal is obtained based on the second waveform signal.
- the second waveform signal is output from the second waveform generation unit 10 based on the output of the frequency setting unit 8.
- Signals U, V, W, X, Y, Z and waveforms Iu, Iv, Iw in FIG. 4 are the same as those in FIG.
- Each signal U, V, W, X, Y, and Z is commutated by outputting a predetermined frequency based on the output of the frequency setting unit 8.
- the conduction angle is 120 degrees or more and less than 180 degrees.
- FIG. 4 shows a case where the conduction angle is 150 degrees. By increasing the conduction angle, the current waveforms Iu, Iv, and Iw of each phase approximate to a sine wave.
- the rotational speed is significantly increased compared to the conventional case.
- the motor is driven as a synchronous motor, and the current increases as the drive frequency increases.
- the peak current is suppressed by expanding the conduction angle to less than the maximum of 180 degrees. Therefore, even if the brushless DC motor 4 is driven at a higher current, it is operated without overcurrent protection.
- FIG. 5 is a diagram showing the relationship between torque and phase when the brushless DC motor 4 is driven synchronously.
- the horizontal axis represents the motor torque
- the vertical axis represents the phase difference based on the phase of the induced voltage.
- the phase is positive, the phase is positive with respect to the phase of the induced voltage.
- the line D1 indicates the phase of the phase current of the brushless DC motor 4
- the line E1 indicates the phase of the terminal voltage of the brushless DC motor 4.
- the phase of the phase current is ahead of the phase of the terminal voltage, it can be seen that the brushless DC motor 4 is driven at high speed by synchronous driving.
- FIG. 6 shows the relationship between the terminal voltage phase and the phase current phase in this case.
- FIG. 6 is a vector diagram showing the relationship between the phase of the phase current due to the load and the phase of the terminal voltage on the dq plane.
- the terminal voltage vector Vt keeps the magnitude almost constant and the phase changes in the advance direction.
- the terminal voltage vector Vt rotates in the direction of arrow F.
- the current vector I changes in magnitude as the load increases (for example, the current increases as the load increases) while maintaining a substantially constant phase.
- the current vector I extends in the direction of arrow G. In this way, the phase relationship between the vectors is determined in a state where the voltage vector and the current vector are appropriate according to the driving environment (input voltage, load torque, driving speed, etc.).
- FIGS. 7A and 7B are diagrams for explaining the phase relationship of the brushless DC motor 4.
- FIGS. 7A and 7B show the relationship between the phase of the phase current of the brushless DC motor 4 and the phase of the terminal voltage.
- the horizontal axis represents time
- the vertical axis represents the phase based on the phase of the induced voltage (that is, the phase difference from the induced voltage).
- line D2 indicates the phase of the phase current
- line E2 indicates the phase of the terminal voltage
- line H2 indicates the phase difference between the phase of the phase current and the phase of the terminal voltage.
- FIG. 7A shows a driving state at a low load
- FIG. 7B shows a driving state at a high load. Further, since the phase of the phase current is advanced from the phase of the terminal voltage in both FIGS. 7A and 7B due to the difference from the phase of the induced voltage, the brushless DC motor 4 is driven at a very high speed by synchronous driving. You can see that
- the rotor 4a in synchronous driving when the load is small with respect to the driving speed, the rotor 4a is delayed by an angle corresponding to the load with respect to commutation. That is, when viewed from the rotor 4a, commutation advances and becomes a phase, and a predetermined relationship is maintained. That is, when viewed from the induced voltage, the phase of the terminal voltage and the phase current becomes a leading phase, and a predetermined relationship is maintained. Since this is the same state as the magnetic flux weakening control, high-speed driving is possible.
- the rotation of the brushless DC motor 4 fluctuates with respect to the commutation performed at a constant period. For this reason, when the phase of the induced voltage is used as a reference, the phase of the terminal voltage varies. In such a driving state, the rotation of the brushless DC motor 4 fluctuates, and a swell sound is generated accordingly. Further, since the current pulsates, it is determined that the current is an overcurrent, and the brushless DC motor 4 may be stopped.
- the brushless DC motor 4 when the brushless DC motor 4 is synchronously driven in an open loop, the brushless DC motor 4 is stably driven when the load is small, but the above-described disadvantage occurs when the load is large. That is, when the brushless DC motor 4 is synchronously driven in an open loop, it cannot be driven at high speed / high load, and the driving range is not expanded.
- the motor drive device 22 in the present embodiment drives the brushless DC motor 4 in a state in which the phase of the phase current and the phase of the terminal voltage are kept in a phase relationship corresponding to the load as shown in FIG. .
- a method for maintaining the phase relationship between the phase of the phase current and the phase of the terminal voltage will be described below.
- the motor driving device 22 detects the reference phase of the terminal voltage (that is, the commutation reference position of the drive signal) and the reference point of the phase of the phase current, and based on this, the commutation timing in the open-loop synchronous drive (with a constant cycle). (Commutation) is corrected to determine the commutation timing while maintaining the phase relationship between the phase of the phase current and the phase of the terminal voltage. Specifically, the second waveform generator 10 determines the commutation timing that maintains the above phase relationship.
- the reference phase of the terminal voltage corresponds to the position of the rotor 4a detected by the position detection unit 5.
- the waveform generated based on the commutation timing that is, the second waveform signal has a waveform having a predetermined relationship with the rotor position detected by the position detection unit.
- the second waveform generation unit 10 outputs the generated second waveform signal to the drive unit 12. The operation of the second waveform generator 10 will be described with reference to the flowchart of FIG.
- step 101 whether or not a certain switching element is turned on, that is, the ON timing of the switching element is waited for.
- the on-timing of the switching element on the upper side of the U phase that is, the switching element 3a of the inverter 3 is awaited.
- Step 102 a timer for time measurement is started, and the process proceeds to step 103.
- the position detector 5 determines whether or not the spike of the specific phase has been turned off. That is, it is determined whether or not the spike voltage of the specific phase has dropped from the terminal voltage to the voltage drop of the switching element and from there to near 0V.
- the specific phase is the U phase, and it is determined whether or not the terminal voltage of the U phase has decreased to around 0V. That is, the timing at which the current flowing through the return current diode 3g stops flowing after the switching element 3b of the U-phase lower side, that is, the switching element 3b of the inverter 3, is turned off is the timing at which the specific phase spikes off.
- This timing determination is based on determining the timing at which the direction of current flow switches from negative to positive, that is, the current zero-cross timing.
- step 104 the timer started in step 102 is stopped, the timer count value is stored, and the process proceeds to step 105. That is, the time from when the switching element 3a is turned on until the spike voltage generated while the current is flowing through the freewheeling current diode 3g is measured, and the routine proceeds to step 105.
- step 105 the difference between the time measured in step 104 and the average time so far is calculated, and the process proceeds to step 106.
- step 106 the commutation timing correction amount is calculated based on the difference calculated in step 105, and the process proceeds to step 107.
- the correction of the commutation timing is to correct the commutation timing with respect to the basic commutation cycle based on the frequency set by the frequency setting unit 8, that is, the command speed. Therefore, when a large correction amount is added, overcurrent or step-out occurs. Therefore, when calculating the correction amount, the calculation is performed after adding a low-pass filter or the like to suppress rapid fluctuations in the commutation timing. As a result, even when the zero cross of the current is erroneously detected due to the influence of noise or the like, the influence on the correction amount is reduced and the driving stability is further improved.
- the change in the commutation timing for accelerating / decelerating the brushless DC motor 4 also becomes gentle. For this reason, even when the command speed is greatly changed and the frequency (commutation cycle) by the frequency setting unit 8 is significantly changed, the change in the commutation timing becomes gentle and the acceleration / deceleration becomes smooth.
- the commutation timing correction is to always bring the phase difference between the phase of the phase current and the phase of the terminal voltage close to the average time. For example, when the rotational speed of the rotor 4a decreases due to an increase in the load, the phase of the phase current moves in the delay direction with reference to the phase of the terminal voltage. For this reason, the time measured in step 104 is longer than the average time from the reference phase of the terminal voltage to the reference phase of the phase current. In this case, the second waveform generation unit 10 corrects the commutation timing so that the commutation timing is delayed from the timing of the commutation cycle based on the rotation speed (the number of rotations).
- the second waveform generation unit 10 delays the commutation timing, delays the phase of the terminal voltage, and sets the phase difference from the phase of the phase current to the average time. Move closer to
- the second waveform generation unit 10 once corrects the commutation timing so that the commutation timing is earlier than the timing of the commutation cycle based on the rotation speed. That is, since the measurement time is shortened because the phase of the phase current is accelerated, the second waveform generator 10 advances the phase of the terminal voltage by advancing the commutation timing, and calculates the phase difference of the phase of the phase current. Approach the average time.
- the second waveform generation unit 10 performs correction of the commutation timing as an arbitrary timing (for example, once per rotation of the rotor 4a) at a specific phase (for example, only the switching element on the upper side of the U phase) Phase commutation is performed temporally with a commutation cycle based on the target rotational speed. Thereby, the phase relationship between the phase of the phase current and the phase of the terminal voltage is optimally maintained according to the load, and the driving speed of the brushless DC motor 4 is maintained.
- step 107 the average time is updated taking into account the time measured in step 104, and the process proceeds to step 108.
- the commutation timing is determined by adding a correction amount to the commutation cycle of the switching element based on the frequency (drive speed) set by the frequency setting unit 8.
- the commutation timing is obtained by adding a correction amount to the frequency set by the frequency setting unit 8 so that the phase of the phase current and the phase of the terminal voltage always have an average phase difference. Determined by reference. Therefore, when the load increases, the phase difference that is the difference between the phase of the phase current and the commutation timing is narrowed.
- the brushless DC motor 4 is driven on the basis of a state where the phase difference is narrower than before the average time as a reference for correction is reduced and the load is increased. As a result, the brushless DC motor 4 is driven with a larger advance angle, and the output torque is increased and the required output torque is ensured by improving the flux-weakening effect.
- the brushless DC motor 4 is driven on the basis of a state in which the phase difference is widened as compared with the time before the average time as a reference for correction becomes large and the load becomes small. As a result, the brushless DC motor 4 is driven at a smaller advance angle, and the output torque is reduced due to the reduction of the flux-weakening effect, so that an excessive torque is not output. As described above, a drive that ensures a necessary output and does not generate an extra output is performed.
- Step 109 it is determined whether a certain switching element is turned on, that is, whether commutation has been performed.
- a certain switching element is one in which the on / off state of the switching element changes at the timing when a section in which a spike can occur is completed.
- the switching element is the switching element 3a on the upper side of the U phase. If the switching element 3a is not turned on (No at Step 109), the process returns to Step 103 again. If the switching element 3a is turned on (Yes in step 109), no spike has occurred, and the process proceeds to step 110.
- step 110 the commutation timing correction amount is set to 0, and the process proceeds to step 108.
- the timing of the commutation cycle based on the rotational speed is determined as the next commutation timing.
- the state where no spike occurs is a state where the phase of the phase current is sufficiently advanced with respect to the phase of the terminal voltage. That is, since the load is small and the necessary torque is sufficiently secured, the brushless DC motor 4 is stably driven without correction.
- Step 111 the commutation timing correction amount is set to 0, and the process proceeds to step 108.
- the timing of the commutation cycle based on the rotation speed is determined as the next commutation timing.
- the correction timing may be set in consideration of the application of the motor driving device 22 and the inertia of the brushless DC motor 4. For example, the correction may be performed once per rotation of the rotor 4a, corrected twice during one electrical angle cycle, or corrected every time each switching element is turned on.
- FIG. 9 is a diagram showing the relationship between the rotation speed and the duty of the brushless DC motor 4 in the present embodiment.
- the brushless DC motor 4 when the rotational speed of the brushless DC motor 4, that is, the rotational speed of the rotor 4 a is 50 r / s or less, the brushless DC motor 4 is driven based on the first waveform signal from the first waveform generator 6. Is done. The duty is adjusted to the most efficient value according to the rotational speed by feedback control.
- the rotation speed is 50 r / s
- the duty is 100%
- the drive based on the first waveform generator 6 cannot be rotated any more. That is, the limit is reached.
- the upper limit frequency setting unit 13 sets 75 r / s, which is 1.5 times the upper limit frequency (upper limit rotation speed), based on the 50 r / s.
- the frequency limiting unit 9 does not output any further frequency according to the upper limit frequency 75 r / s.
- the brushless DC motor 4 is driven while the duty is constant and only the frequency (that is, the commutation cycle) is increased between the rotational speeds of 50 r / s and 75 r / s.
- the motor drive device 22 of the present embodiment is suitable for driving the brushless DC motor 4 mounted on the compressor 17 such as the refrigerator 21 or the air conditioner. This is because the motor drive device 22 can drive the highly efficient brushless DC motor 4 with a small torque in a wide driving range. For example, when the internal temperature of the refrigerator 21 is stable and the brushless DC motor 4 can rotate at a low speed, highly efficient driving can be performed. On the other hand, even when the internal temperature becomes high and it is necessary to drive at high speed, it is possible to cope. The same applies to an air conditioner.
- the load of the compressor 17 such as the refrigerator 21 or the air conditioner rarely changes rapidly, the load may change over a long time. In this case, it is necessary to change the upper limit frequency. The operation in this case will be described below.
- FIG. 10 is a timing diagram of the rotation speed and the duty of the motor drive device 22 in the present embodiment.
- the brushless DC motor 4 starts at time t0.
- the target rotational speed of the brushless DC motor 4 is 80 r / s.
- the brushless DC motor 4 is driven with an increased duty based on feedback control by the position detection unit 5 and the first waveform generation unit 6, and the rotation speed is increased accordingly.
- the maximum duty is 100%, and the drive based on feedback control by the position detector 5 and the first waveform generator 6 cannot increase the rotational speed any more.
- the rotational speed of the brushless DC motor 4 is 50 r / s.
- the upper limit frequency setting unit 13 sets an upper limit frequency corresponding to 75 r / s which is 1.5 times the rotation speed, that is, 50 r / s.
- the switching determination unit 11 switches the driving of the brushless DC motor 4 from driving by the position detection unit 5 and the first waveform generation unit 6 to driving by the frequency setting unit 8 and the second waveform generation unit 10. Thereafter, the duty is constant (100%), and the rotation speed of the brushless DC motor 4 is increased by increasing the frequency of the frequency setting unit 8.
- the rotational speed increases from time t1 to time t2.
- the target rotational speed is 80 r / s as originally, but the upper limit frequency set by the upper limit frequency setting unit 13 is a frequency corresponding to the rotational speed 75 r / s. Therefore, the frequency limiter 9 limits the rotational speed to 75 r / s.
- the upper limit frequency changing unit 14 detects that a fixed time (in the case of the present embodiment, 30 minutes) has elapsed since time t2.
- the upper limit frequency changing unit 14 instructs the switching determining unit 11 to switch the driving of the brushless DC motor 4 from the driving by the second waveform generating unit 10 to the driving by the first waveform generating unit 6.
- the number of rotations decreases.
- the speed detector 7 detects the number of rotations at this time, which is the maximum number of rotations that can be driven by the first waveform generator 6.
- the rotation speed (maximum) of the brushless DC motor 4 at the time when the upper limit frequency changing unit 14 switches to driving by the first waveform generating unit 6 is used.
- the number of revolutions) increases compared to the number of revolutions at time t1.
- this maximum rotational speed is confirmed to be 55 r / s, which is higher than the rotational speed 50 r / s at time t1.
- the upper limit frequency setting unit 13 resets the upper limit frequency. That is, an upper limit frequency corresponding to 82.5 r / s, which is 1.5 times 55 r / s, is set.
- the switching determination unit 11 switches to driving by the frequency setting unit 8 and the second waveform generation unit 10 and increases the frequency of the frequency setting unit 8 again. Increase the rotation speed.
- the rotational speed corresponding to the upper limit frequency is 82.5 r / s
- the brushless DC motor 4 is continuously driven at the initial target rotational speed of 80 r / s. In this way, by detecting the load again at regular intervals with respect to the fluctuation of the load, the upper limit frequency is reset, and optimum driving according to the load is performed.
- FIG. 11 is a cross-sectional view showing a cross section perpendicular to the rotation axis of the rotor of the brushless DC motor 4 in the present embodiment.
- the rotor 4a is composed of an iron core 4g and four magnets 4c to 4f.
- the iron core 4g is formed by stacking punched thin steel sheets of about 0.35 to 0.5 mm.
- the magnets 4c to 4f arc-shaped ferrite permanent magnets are often used, and as shown in the drawing, the magnets 4c to 4f are arranged symmetrically with the arc-shaped concave portion facing outward.
- rare earth permanent magnets such as neodymium are used as the magnets 4c to 4f, they may be flat.
- an axis extending from the center of the rotor 4a toward the center of one magnet (for example, 4f) is defined as a d-axis, and one magnet (for example, 4f) is connected to the center of the rotor 4a.
- the axis that goes to the magnet adjacent to (for example, 4c) is the q axis.
- the inductance Ld in the d-axis direction and the inductance Lq in the q-axis direction have opposite saliency and are different. That is, this can effectively use torque (reluctance torque) using reverse saliency as well as torque (magnet torque) due to magnetic flux of the magnet. Therefore, torque can be used more effectively as a motor. As a result, a highly efficient motor is obtained as the present embodiment.
- the brushless DC motor 4 of the present embodiment has a rotor 4a in which permanent magnets 4c to 4f are embedded in an iron core 4g and has saliency.
- reluctance torque due to saliency is used. This not only improves efficiency at low speeds, but also improves high-speed drive performance.
- a rare earth magnet such as neodymium is used as the permanent magnet to increase the ratio of magnet torque, or the difference between inductances Ld and Lq is increased to increase the ratio of reluctance torque, the optimum conduction angle can be changed. Can increase efficiency.
- the compressor 17 is a reciprocating compressor, the inertia is larger and the torque pulsation at high speed is small, so that the compressor 17 can be stably operated at high speed. Further, when the compressor 17 is mounted on the refrigerator 21, the load of the refrigerator 21 is not suddenly changed, so that the change in the phase difference between the phase of the phase current and the phase of the terminal voltage is small, and more stable driving is possible. .
- the frequency limiter 9 since the frequency limiter 9 is not driven beyond the drive limit, reliability in high-speed driving is ensured. Thereby, the brushless DC motor 4 does not stop due to step-out or the like.
- the refrigerator 21 since the refrigerator 21 stores food, it is necessary to always cool the inside of the refrigerator. However, the refrigerator 17 can be prevented from being cooled due to an unexpected stop of the compressor 17.
- the upper limit frequency can be reset by the upper limit frequency changing unit 14, even when the load changes over time, it can be reset to an appropriate maximum rotation speed.
- the compressor 17 is driven in the cooling system such as the refrigerator 21 or the air conditioner, the load change is very gradual. For this reason, there is no need to frequently correct the maximum rotational speed, and it is effective to correct the maximum rotational speed over a certain period of time.
- the present invention is a motor drive device for driving a brushless DC motor including a rotor and a stator having a three-phase winding.
- the present invention further includes an inverter that supplies power to the three-phase winding and a terminal voltage acquisition unit that acquires the terminal voltage of the brushless DC motor.
- the present invention includes a first waveform generation unit that outputs a first waveform signal having a waveform with a conduction angle of 120 degrees to 150 degrees.
- the present invention has a frequency setting unit that sets the duty by changing only the frequency with a constant duty.
- the present invention provides a second waveform having a waveform having a predetermined relationship with the terminal voltage acquired by the terminal voltage acquisition unit and having a conduction angle of 120 degrees or more and less than 180 degrees at the frequency set by the frequency setting unit.
- a second waveform generator for outputting a signal Further, the present invention outputs a first waveform signal when the rotor speed is determined to be lower than the predetermined speed, and outputs a second waveform signal when the rotor speed is determined to be higher than the predetermined speed.
- a switching determination unit for switching is provided.
- the present invention provides a drive unit that outputs to the inverter a drive signal that indicates the supply timing of the power that the inverter supplies to the three-phase winding based on the first or second waveform signal output from the switching determination unit.
- the first waveform generator further includes a position detector that detects the position of the rotor, and outputs the first waveform signal based on the position of the rotor output from the position detector.
- speed feedback control is performed while the relative position of the rotor of the brushless DC motor is detected by the position detector, so that the motor drive device can be driven with high efficiency.
- the position detection unit detects the rotor position by detecting the zero cross point of the terminal voltage acquired by the terminal voltage acquisition unit.
- the position detection of a rotor can be made into an inexpensive configuration such as detection of a zero cross point of a terminal voltage.
- the frequency set by the frequency setting unit is input.
- the input frequency is output.
- the frequency exceeds the upper limit frequency the upper limit frequency is output to the second waveform generation unit. It further has a restriction part.
- the present invention further includes an upper limit frequency setting unit that sets the upper limit frequency based on the maximum frequency of the first waveform signal and outputs the upper limit frequency to the frequency limiter.
- the present invention also sets the upper limit frequency again by temporarily switching from driving with the second waveform signal to driving with the first waveform signal after a predetermined time has elapsed since driving with the second waveform signal. It further has an upper limit frequency changing unit to be set. Thereby, even if the load changes with the passage of time, it can be reset to an appropriate maximum rotational speed.
- the rotor of the brushless DC motor is configured by embedding a permanent magnet in the iron core, and further has saliency.
- reluctance torque due to saliency can be used, and the efficiency at low speed and the high speed driving performance can be further improved.
- the brushless DC motor drives the compressor. This makes it possible to reduce the noise of the motor, particularly the carrier noise, by using a brushless DC motor with increased winding amount and reduced torque.
- the compressor is a reciprocating compressor. Therefore, since inertia is larger and torque pulsation at high speed is small, it can be stably operated up to high speed.
- the refrigerant used in the compressor is R600a.
- the cylinder volume is increased in order to obtain the refrigerating capacity, the inertia is increased, and stable driving that is less likely to fluctuate depending on the speed and load becomes possible.
- the present invention is an electric device using the motor driving device having the above configuration. Therefore, when it uses for a refrigerator as an electric equipment, since load fluctuation
- an air conditioner as an electrical device, it can handle a wide driving range from the lowest load during cooling to the maximum load during heating, and can reduce power consumption particularly at low loads below the rating. .
- the motor drive device of the present invention is intended to improve the drive stability of a brushless DC motor at high speed / high load and to extend the drive range. Thereby, it can be applied not only to refrigerators and air conditioners but also to higher efficiency of compressors in vending machines, showcases, and heat pump water heaters. In addition, the present invention can be applied to energy saving of electric devices using brushless DC motors such as washing machines, vacuum cleaners, and pumps.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
Description
図1は、本発明の実施の形態1におけるモータ駆動装置のブロック図である。図1において、交流電源1は一般的な商用電源で、日本においては実効値100Vの50または60Hzの電源である。モータ駆動装置22は、交流電源1に接続され、ブラシレスDCモータ4を駆動する。以下、モータ駆動装置22について説明する。
4 ブラシレスDCモータ
4a 回転子
4b 固定子
4c,4d,4e,4f マグネット(永久磁石)
4g 鉄心
5 位置検出部(端子電圧取得部)
6 第1波形発生部
8 周波数設定部
9 周波数制限部
10 第2波形発生部
11 切換判定部
12 ドライブ部
13 上限周波数設定部
14 上限周波数変更部
17 圧縮機
21 冷蔵庫(電気機器)
22 モータ駆動装置
Claims (11)
- 回転子と、3相巻線を有する固定子とからなるブラシレスDCモータを駆動するモータ駆動装置であって、
前記3相巻線に電力を供給するインバータと、
前記ブラシレスDCモータの端子電圧を取得する端子電圧取得部と、
通電角が120度以上150度以下の波形である第1の波形信号を出力する第1波形発生部と、
デューティは一定で、周波数のみを変化させて設定する周波数設定部と、
前記端子電圧取得部が取得した前記端子電圧と所定の関係を有する波形で、かつ、前記周波数設定部で設定した周波数で通電角が120度以上180度未満の波形である第2の波形信号を出力する第2波形発生部と、
前記回転子の速度を所定速度より低いと判定した場合は前記第1の波形信号を、前記回転子の速度を前記所定速度より高いと判定した場合は前記第2の波形信号を出力するように切り換える切換判定部と、
前記切換判定部から出力された第1または第2の波形信号に基づき、前記インバータが前記3相巻線に供給する電力の供給タイミングを指示するドライブ信号を、前記インバータに出力するドライブ部、
とを有するモータ駆動装置。 - 前記回転子の位置を検出する位置検出部をさらに備え、前記第1波形発生部は、前記位置検出部から出力された前記回転子の位置に基づき、前記第1の波形信号を出力する請求項1に記載のモータ駆動装置。
- 前記位置検出部は、前記回転子の位置の検出を、前記端子電圧取得部が取得した前記端子電圧のゼロクロスポイントを検出することにより行う請求項1に記載のモータ駆動装置。
- 前記周波数設定部が設定した周波数が入力され、前記周波数が上限周波数以下の場合は前記入力された周波数を、前記周波数が前記上限周波数を超える場合は前記上限周波数を前記第2波形発生部へ出力する周波数制限部をさらに有する請求項1に記載のモータの駆動装置。
- 前記上限周波数を、前記第1の波形信号の最大周波数に基づいて設定し、前記周波数制限部に出力する上限周波数設定部をさらに有する請求項4に記載のモータ駆動装置。
- 前記第2の波形信号による駆動を行ってから所定時間が経過した後、前記第2の波形信号による駆動から前記第1の波形信号による駆動に一時的に切り換えることにより、前記上限周波数を再度設定する上限周波数変更部をさらに有する請求項5に記載のモータ駆動装置。
- 前記ブラシレスDCモータの回転子は、鉄心に永久磁石を埋め込んで構成され、さらに、突極性を有する請求項1に記載のモータ駆動装置。
- 前記ブラシレスDCモータは圧縮機を駆動する請求項1に記載のモータ駆動装置。
- 前記圧縮機はレシプロ圧縮機である請求項8に記載のモータ駆動装置。
- 前記圧縮機で使用される冷媒はR600aである請求項8に記載のモータ駆動装置。
- 請求項1~6のいずれか1項に記載のモータ駆動装置により駆動されるブラシレスDCモータを備えた電気機器。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP10731143.3A EP2388905B1 (en) | 2009-01-14 | 2010-01-13 | Motor drive device and electric equipment utilizing same |
CN201080004642.9A CN102282754B (zh) | 2009-01-14 | 2010-01-13 | 电动机驱动装置和使用该电动机驱动装置的电设备 |
US13/140,950 US20110256005A1 (en) | 2009-01-14 | 2010-01-13 | Motor drive device and electric equipment utilizing the same |
BRPI1006834-1A BRPI1006834B1 (pt) | 2009-01-14 | 2010-01-13 | Dispositivo acionador de motor e equipamento elétrico que utiliza o mesmo |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009-005492 | 2009-01-14 | ||
JP2009005492A JP5195444B2 (ja) | 2009-01-14 | 2009-01-14 | ブラシレスdcモータの駆動装置並びにこれを用いた冷蔵庫及び空気調和機 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2010082472A1 true WO2010082472A1 (ja) | 2010-07-22 |
Family
ID=42339725
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2010/000122 WO2010082472A1 (ja) | 2009-01-14 | 2010-01-13 | モータ駆動装置およびこれを用いた電気機器 |
Country Status (7)
Country | Link |
---|---|
US (1) | US20110256005A1 (ja) |
EP (1) | EP2388905B1 (ja) |
JP (1) | JP5195444B2 (ja) |
CN (1) | CN102282754B (ja) |
BR (1) | BRPI1006834B1 (ja) |
TW (1) | TWI495252B (ja) |
WO (1) | WO2010082472A1 (ja) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102454617A (zh) * | 2010-10-20 | 2012-05-16 | 日本电产三协株式会社 | 泵控制装置及泵装置 |
WO2012147192A1 (ja) * | 2011-04-28 | 2012-11-01 | 三菱電機株式会社 | ヒートポンプ装置、ヒートポンプシステム及びインバータの制御方法 |
CN102967104A (zh) * | 2011-08-31 | 2013-03-13 | 三星电子株式会社 | 冰箱及控制该冰箱的方法 |
US9543887B2 (en) | 2010-10-15 | 2017-01-10 | Mitsubishi Electric Corporation | Heat pump device, heat pump system, and method for controlling three-phase inverter |
US9618249B2 (en) | 2010-12-21 | 2017-04-11 | Mitsubishi Electric Corporation | Heat pump device, heat pump system, and method for controlling three-phase inverter |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5186586B2 (ja) * | 2011-09-01 | 2013-04-17 | 株式会社松井製作所 | 駆動制御装置、電気機器及び駆動制御方法 |
JP5927411B2 (ja) * | 2011-10-14 | 2016-06-01 | パナソニックIpマネジメント株式会社 | モータ駆動装置およびにこれを用いた電気機器 |
JP6138413B2 (ja) * | 2011-11-10 | 2017-05-31 | 三菱重工業株式会社 | モータ駆動装置 |
EP2803922B1 (en) * | 2012-01-04 | 2021-09-29 | Mitsubishi Electric Corporation | Heat pump device, air conditioner, and refrigerator |
AU2012377681B2 (en) * | 2012-04-16 | 2015-12-10 | Mitsubishi Electric Corporation | Heat pump device, air conditioner, and cooling machine |
KR101953124B1 (ko) * | 2012-07-13 | 2019-03-04 | 삼성전자주식회사 | 모터 구동장치 및 이를 이용한 냉장고 |
WO2014155655A1 (ja) * | 2013-03-29 | 2014-10-02 | 株式会社松井製作所 | 材料輸送装置及び材料輸送方法 |
JP5800933B2 (ja) * | 2014-02-28 | 2015-10-28 | ファナック株式会社 | 同期モータを制御するモータ制御装置 |
GB2530293B (en) * | 2014-09-17 | 2017-08-02 | Nidec Control Techniques Ltd | Method of controlling a power output of an inverter drive |
EP3023713A1 (en) * | 2014-11-19 | 2016-05-25 | Danfoss A/S | A method for controlling a vapour compression system with an ejector |
CN107429931B (zh) * | 2015-04-07 | 2020-03-31 | 日立江森自控空调有限公司 | 空调机 |
RU2680447C1 (ru) | 2015-08-14 | 2019-02-21 | Данфосс А/С | Паровая компрессионная система с по меньшей мере двумя испарительными установками |
JP6788007B2 (ja) | 2015-10-20 | 2020-11-18 | ダンフォス アクチ−セルスカブ | 長時間エジェクタモードで蒸気圧縮システムを制御するための方法 |
WO2017067858A1 (en) | 2015-10-20 | 2017-04-27 | Danfoss A/S | A method for controlling a vapour compression system with a variable receiver pressure setpoint |
TWI563791B (en) * | 2015-11-17 | 2016-12-21 | En Technologies Corp | System and way for no sensor three-phase motor |
TR201610873A2 (tr) * | 2016-08-03 | 2018-02-21 | Arcelik As | Di̇nami̇k olarak kontrol edi̇len anahtarlama frekansina sahi̇p bi̇r güç modülü i̇çeren ev ci̇hazi |
CN106286249A (zh) * | 2016-08-12 | 2017-01-04 | 合肥美的电冰箱有限公司 | 变频控制方法、控制器及冰箱 |
DE102016222958A1 (de) * | 2016-11-22 | 2018-05-24 | BSH Hausgeräte GmbH | Verfahren zum Anhalten eines Hubkolben-Verdichters und Hubkolben-Verdichter eines Kältegerätes, Klimagerätes oder einer Wärmepumpe sowie Kältegerät, Klimageräts oder Wärmepumpe damit |
DK180146B1 (en) | 2018-10-15 | 2020-06-25 | Danfoss As Intellectual Property | Heat exchanger plate with strenghened diagonal area |
US11626822B2 (en) | 2019-10-28 | 2023-04-11 | Hale Products, Inc. | Low-speed high torque motor control and foam system |
US20230015020A1 (en) * | 2021-07-16 | 2023-01-19 | Carrier Corporation | Two degrees of control through pulse width modulation interface |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003219681A (ja) | 2002-01-23 | 2003-07-31 | Mitsubishi Electric Corp | Dcブラシレスモーター制御方法およびdcブラシレスモーター装置 |
JP2004282911A (ja) * | 2003-03-17 | 2004-10-07 | Matsushita Electric Ind Co Ltd | ブラシレスdcモータの駆動方法及びその装置 |
JP2006101686A (ja) * | 2004-09-03 | 2006-04-13 | Matsushita Electric Ind Co Ltd | モータ駆動装置および駆動方法 |
JP2008208812A (ja) * | 2007-02-28 | 2008-09-11 | Hitachi Appliances Inc | 密閉形圧縮機及び冷蔵庫 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3700576B2 (ja) * | 2000-11-24 | 2005-09-28 | 松下電器産業株式会社 | モータ制御装置 |
US6636011B2 (en) * | 2001-06-13 | 2003-10-21 | Emerson Electric Co. | Induction motor control system |
KR100702913B1 (ko) * | 2003-03-17 | 2007-04-03 | 마쯔시다덴기산교 가부시키가이샤 | 브러시리스 dc 모터의 구동 방법 및 그 장치 |
JP4631400B2 (ja) * | 2004-11-09 | 2011-02-16 | 株式会社デンソー | 同期モータの位置センサレス駆動制御装置 |
US7304452B2 (en) * | 2005-03-11 | 2007-12-04 | Kabushiki Kaisha Toshiba | Motor control device |
JP4791319B2 (ja) * | 2006-10-13 | 2011-10-12 | シャープ株式会社 | インバータ装置、圧縮機駆動装置および冷凍・空調装置 |
US8106622B2 (en) * | 2007-04-05 | 2012-01-31 | Denso Corporation | Control system for multiphase rotary machines |
JPWO2008139518A1 (ja) * | 2007-04-27 | 2010-07-29 | 三菱電機株式会社 | 電力変換装置 |
JP2008289310A (ja) * | 2007-05-21 | 2008-11-27 | Panasonic Corp | モータ駆動装置およびこれを用いた冷蔵庫 |
US7847433B2 (en) * | 2007-11-27 | 2010-12-07 | Rain Bird Corporation | Universal irrigation controller power supply |
-
2009
- 2009-01-14 JP JP2009005492A patent/JP5195444B2/ja active Active
-
2010
- 2010-01-11 TW TW099100548A patent/TWI495252B/zh active
- 2010-01-13 US US13/140,950 patent/US20110256005A1/en not_active Abandoned
- 2010-01-13 WO PCT/JP2010/000122 patent/WO2010082472A1/ja active Application Filing
- 2010-01-13 BR BRPI1006834-1A patent/BRPI1006834B1/pt active IP Right Grant
- 2010-01-13 CN CN201080004642.9A patent/CN102282754B/zh active Active
- 2010-01-13 EP EP10731143.3A patent/EP2388905B1/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003219681A (ja) | 2002-01-23 | 2003-07-31 | Mitsubishi Electric Corp | Dcブラシレスモーター制御方法およびdcブラシレスモーター装置 |
JP2004282911A (ja) * | 2003-03-17 | 2004-10-07 | Matsushita Electric Ind Co Ltd | ブラシレスdcモータの駆動方法及びその装置 |
JP2006101686A (ja) * | 2004-09-03 | 2006-04-13 | Matsushita Electric Ind Co Ltd | モータ駆動装置および駆動方法 |
JP2008208812A (ja) * | 2007-02-28 | 2008-09-11 | Hitachi Appliances Inc | 密閉形圧縮機及び冷蔵庫 |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9543887B2 (en) | 2010-10-15 | 2017-01-10 | Mitsubishi Electric Corporation | Heat pump device, heat pump system, and method for controlling three-phase inverter |
CN102454617A (zh) * | 2010-10-20 | 2012-05-16 | 日本电产三协株式会社 | 泵控制装置及泵装置 |
US9618249B2 (en) | 2010-12-21 | 2017-04-11 | Mitsubishi Electric Corporation | Heat pump device, heat pump system, and method for controlling three-phase inverter |
WO2012147192A1 (ja) * | 2011-04-28 | 2012-11-01 | 三菱電機株式会社 | ヒートポンプ装置、ヒートポンプシステム及びインバータの制御方法 |
JP5693714B2 (ja) * | 2011-04-28 | 2015-04-01 | 三菱電機株式会社 | ヒートポンプ装置、ヒートポンプシステム及びインバータの制御方法 |
AU2011366351B2 (en) * | 2011-04-28 | 2015-04-23 | Mitsubishi Electric Corporation | Heat pump apparatus, heat pump system and inverter control method |
US9829226B2 (en) | 2011-04-28 | 2017-11-28 | Mitsubishi Electric Corporation | Heat pump device, heat pump system, and method for controlling inverter |
CN102967104A (zh) * | 2011-08-31 | 2013-03-13 | 三星电子株式会社 | 冰箱及控制该冰箱的方法 |
US9759473B2 (en) | 2011-08-31 | 2017-09-12 | Samsung Electronics Co., Ltd. | Refrigerator and method for controlling the same |
Also Published As
Publication number | Publication date |
---|---|
TW201036319A (en) | 2010-10-01 |
JP2010166655A (ja) | 2010-07-29 |
US20110256005A1 (en) | 2011-10-20 |
CN102282754B (zh) | 2014-07-09 |
EP2388905B1 (en) | 2016-04-06 |
BRPI1006834A2 (pt) | 2016-04-12 |
JP5195444B2 (ja) | 2013-05-08 |
EP2388905A1 (en) | 2011-11-23 |
CN102282754A (zh) | 2011-12-14 |
EP2388905A4 (en) | 2015-03-18 |
TWI495252B (zh) | 2015-08-01 |
BRPI1006834B1 (pt) | 2020-03-24 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2010082472A1 (ja) | モータ駆動装置およびこれを用いた電気機器 | |
WO2010082473A1 (ja) | モータ駆動装置およびこれを用いた電気機器 | |
US8716964B2 (en) | Motor drive device, and compressor and refrigerator using same | |
JP2008160950A (ja) | モータ駆動装置およびこれを具備した冷蔵庫 | |
JP5402311B2 (ja) | モータ駆動装置およびこれを用いた電気機器 | |
JP5375260B2 (ja) | モータ駆動装置およびこれを用いた冷蔵庫 | |
JP5402310B2 (ja) | モータ駆動装置および圧縮機および冷蔵庫 | |
JP2012222842A (ja) | モータ駆動装置およびにこれを用いた電気機器 | |
JP5428746B2 (ja) | ブラシレスdcモータの駆動装置およびこれを用いた電気機器 | |
JP5521405B2 (ja) | モータ駆動装置およびこれを用いた電気機器 | |
JP5387396B2 (ja) | モータ駆動装置および圧縮機および冷蔵庫 | |
JP5747145B2 (ja) | モータ駆動装置およびこれを用いた電気機器 | |
JP2011193585A (ja) | モータ駆動装置およびにこれを用いた電気機器 | |
JP5604991B2 (ja) | モータ駆動装置およびにこれを用いた電気機器 | |
JP2008005639A (ja) | ブラシレスdcモータの駆動方法およびその装置 | |
JP2012186876A (ja) | 圧縮機の駆動装置およびこれを用いた冷蔵庫 | |
JP5927412B2 (ja) | モータ駆動装置およびにこれを用いた電気機器 | |
JP5927411B2 (ja) | モータ駆動装置およびにこれを用いた電気機器 | |
JP2012092694A (ja) | 圧縮機の駆動装置およびこれを用いた冷蔵庫 | |
JP5396969B2 (ja) | モータ駆動装置および圧縮機および冷蔵庫 | |
JP6383940B2 (ja) | モータ駆動装置 | |
JP2011109791A (ja) | モータ駆動装置およびそれを用いた圧縮機および冷蔵庫 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 201080004642.9 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 10731143 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 13140950 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2010731143 Country of ref document: EP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
REG | Reference to national code |
Ref country code: BR Ref legal event code: B01A Ref document number: PI1006834 Country of ref document: BR |
|
ENP | Entry into the national phase |
Ref document number: PI1006834 Country of ref document: BR Kind code of ref document: A2 Effective date: 20110714 |