CN104539213B - Motor rotating speed adjusting method, motor rotating speed adjusting system, and air conditioner - Google Patents
Motor rotating speed adjusting method, motor rotating speed adjusting system, and air conditioner Download PDFInfo
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- CN104539213B CN104539213B CN201410719629.1A CN201410719629A CN104539213B CN 104539213 B CN104539213 B CN 104539213B CN 201410719629 A CN201410719629 A CN 201410719629A CN 104539213 B CN104539213 B CN 104539213B
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Abstract
The invention provides a motor rotating speed adjusting method, a motor rotating speed adjusting system, and an air conditioner. The motor rotating speed adjusting method comprises: according to a received setting command, a target rotating speed of a motor of an air conditioner is set and a chopping time interval is set for the motor based on the target rotating speed; on the basis of the target rotating speed, a target rotating speed gear is selected from multiple rotating speed gears of the air conditioner for the motor; a voltage of the target rotating speed gear is detected; and when the voltage of the target rotating speed gear is detected to be in a zero-crossing mode, chopping speed modulation is carried out on the motor according to the chopping time interval. On the basis of the technical scheme, tap speed regulation is carried out on the motor of the air conditioner; a gear capable of providing a rotating speed closest to the target rotating speed is selected; and then chopping speed modulation is carried out on the motor. Therefore, the chopping amount of the motor voltage is substantially reduced; the vibration and noise caused by voltage and current distortion under the chopping speed modulation can be reduced; the quiet degree of the air conditioner running is improved; and the user experience is enhanced.
Description
Technical field
The present invention relates to air-conditioning technical field, in particular to a kind of motor speed control method, a kind of motor speed
Regulating system and a kind of air-conditioner.
Background technology
At present, the indoor set of air-conditioner is typically realized using the alternating current asynchronous circuit with feedback device as shown in Figure 1
The function of stepless speed regulation.It is as follows that it implements process：
As shown in figure 1, the stepless speed regulation control circuit of air-conditioner mainly has following components：Main control chip, power supply, electricity
Pressure zero cross detection circuit, power device, drive circuit 1, relay, drive circuit 2, motor body and speed feedback device.Institute
State main control chip mainly by drive circuit power device accurately to be opened and closed according to the zero cross signal of supply voltage
It is disconnected；The waveform that the zero cross detection circuit passes through detection supply voltage, for the moment that main control chip provides voltage zero-cross, thinks out
Logical or cut-off signals send offer starting point；It is logical with power supply that the relay and drive circuit 2 can control power device
It is disconnected；The power device and drive circuit 1 are switched on or off circuit according to the control command of main control chip, to modulate preferably
Voltage waveform, for motor preferable power supply is provided；The motor is the AC induction motor with speed feedback device.
On air-conditioner after electricity, its voltage zero-crossing detection circuit carries out zero-crossing examination to the supply voltage of air-conditioner, by sky
The main control chip of tune device controls the break-make of power device and power device according to zero cross signal, i.e., to the voltage of supply motor
Chopping modulation is carried out, under this chopping modulation, its waveform is no longer complete sinusoidal waveform to the voltage of motor, but each is partly
Ripple all cuts the waveform of a part, and the distortion of its electric current is also larger.Power device copped wave is more, supplies the voltage effective value of motor
Less, motor speed is lower.In theory, the tune from the range of 0 to rated speed can be realized by this method
Speed, i.e., described stepless speed regulation.
When air-conditioner is needed motor stabilizing in some rotating speed of target, because the main control chip of air-conditioner is detected immediately
The rate signal of motor, when the actual speed for detecting motor is substantially larger than rotating speed of target, can increase power device copped wave
Time, the actual speed of motor declines the virtual value step-down due to voltage, so as to infinite approach rotating speed of target, until etc.
In rotating speed of target.In the same manner, when the actual speed for detecting motor is less than rotating speed of target, then the copped wave time is reduced.By above-mentioned
Process can realize the closed-loop control to motor speed, and motor speed is stable in rotating speed of target.
In addition, in existing air-conditioner, it is also possible to carry out motor speed regulation using the mode of tap speed-regulating, its realization
Process is as follows：Joint is extracted out in the main winding and auxiliary winding of AC induction motor, by changing the number of turn of main winding and auxiliary winding major-minor is changed
Phase magnetic signature, realizes the change of output power of motor and torque, so as to realize motor rotation speed change under specific load.
However, traditional stepless speed regulation is carried out the copped wave of continuous time after zero cross signal by power device, i.e., to per half
The waveform copped wave in individual cycle is once, so very big to being added in the distortion of the waveform of the voltage and current of motor side, although Ke Yishi
Show stablizing for motor speed, but the operation to motor can affect, and can especially make motor produce very big noise,
And generation vibration or resonance etc..And regulation of traditional tap speed-regulating to rotating speed is very rough, accuracy is low, it is impossible to obtain most
Good rotating speed.
Therefore, high efficiency and practicality that the motor speed of air-conditioner is adjusted how are lifted, becomes urgently to be resolved hurrily at present
Technical problem.
The content of the invention
The present invention is based on the problems referred to above, it is proposed that a kind of new technical scheme, and the motor that can lift air-conditioner turns
The high efficiency and practicality of velocity modulation section.
For this purpose, it is an object of the present invention to proposing a kind of motor speed control method.
Further object is that proposing a kind of motor speed regulating system.
Another object of the present invention is to propose a kind of air-conditioner, with above-mentioned motor speed regulating system.
For achieving the above object, the embodiment of a first aspect of the present invention proposes a kind of motor speed control method, uses
In air-conditioner, including：It is that the motor of the air-conditioner arranges rotating speed of target according to the setting command for receiving, and according to institute
Rotating speed of target is stated, is that the motor arranges copped wave time interval；According to the rotating speed of target, in multiple rotating speeds of the air-conditioner
It is the selection of Motor rotating speed of target gear in gear, wherein, the plurality of rotating speed gear corresponds to multiple rated speeds；Detection
The corresponding phase voltage of the rotating speed of target gear；Whenever the phase voltage zero passage is detected, according to the copped wave time
Interval carries out chopping regulating speed to the motor.
Motor speed control method according to embodiments of the present invention, is that the motor of air-conditioner is provided with and multiple voltage-phases
Corresponding multiple rotating speed gears, and selection one carries out work with the immediate rotating speed gear of rotating speed of target in multiple rotating speed gears
Make, now, whenever the phase voltage zero passage under current rotating speed gear is detected, copped wave is carried out to a certain phase or two-phase of motor
Speed governing, to change the voltage effective value of motor, so as to the rotating speed of regulation motor.By the technical scheme, first to the electricity of air-conditioner
Machine carries out tap speed-regulating, is selected to provide the gear with the immediate rotating speed of rotating speed of target, on this basis, then to motor
Carry out chopping regulating speed such that it is able to greatly reduce the copped wave amount to electric moter voltage, it is possible to reduce by voltage and electricity under chopping regulating speed
Vibration and noise caused by stream distortion, improve the quiet degree of air-conditioner operation, improve the performance of product, improve user
Experience.
According to one embodiment of present invention, described is the selection of Motor in multiple rotating speed gears of the air-conditioner
Rotating speed of target gear, specifically includes：Judge whether there is rated speed to be equal to the rotating speed of target in the plurality of rotating speed gear
Rotating speed gear；When judged result is to be, the rotating speed gear is set to into the rotating speed of target gear of the motor, when
Judged result for it is no when, be rated speed described in the selection of Motor with the rotating speed of target closest to and turn more than the target
The rotating speed gear of speed.
Motor speed control method according to embodiments of the present invention, if be equal to rated speed in multiple rotating speed gears
The rotating speed gear of rotating speed of target, then be set to rotating speed of target gear by the rotating speed gear, makes motor under the gear of rotating speed of target
Work, otherwise, selects and rotating speed gear more than rotating speed of target most close with rotating speed of target as rotating speed of target gear, so as to electricity
The actual speed of machine can as early as possible reach the level of rotating speed of target.By the technical scheme, can select in multiple rotating speed gears
Select one to be operated with the immediate rotating speed gear of rotating speed of target, that is to say, that make the virtual value of virtual voltage as far as possible with
The virtual value of rated voltage is closest, so as to reduce copped wave amount in follow-up chopping process, shortens the copped wave time, reduces
By vibration and noise caused by voltage and current distortion under chopping regulating speed, the quiet degree of air-conditioner operation is improve.
According to one embodiment of present invention, it is described whenever the phase voltage zero passage is detected, according to the copped wave
Time interval carries out chopping regulating speed to the motor, specifically includes：Whenever detecting the phase under the rotating speed of target gear
During the voltage zero-cross of position, in ensuing every half voltage cycle, the drive circuit of the power device of the air-conditioner is opened；
The working time of the drive circuit is reached after the copped wave time interval, disconnects the drive circuit, with described by adjusting
The virtual value of voltage is adjusting the actual speed of the motor.
Motor speed control method according to embodiments of the present invention, whenever detecting the voltage zero-cross under rotating speed of target gear
When, the main control chip of air-conditioner opens the drive circuit of air-conditioner, chopping regulating speed is carried out to motor, so as to the reality of regulation motor
Rotating speed, when the working time of drive circuit copped wave time interval is reached, main control chip disconnects drive circuit, so as to complete half
The voltage chopping in cycle.By the technical scheme, can effectively adjust target and turn by tap speed-regulating in combination with chopping regulating speed
Voltage effective value under fast gear, reduces the rotating speed of motor.
According to one embodiment of present invention, according to the copped wave time interval motor is carried out chopping regulating speed it
Afterwards, also include：Whether the actual speed for detecting the motor stablizes constant；When it is determined that the actual speed stablizes constant
When, judge whether the actual speed is equal with the rotating speed of target.
Motor speed control method according to embodiments of the present invention, when voltage effective value tends towards stability, the reality of motor
Rotating speed also tends to stablize, at this point it is possible to actual speed is detected, if actual speed now still has difference with rotating speed of target
Away from stepless time adjustment can be proceeded.By the technical scheme, can be after actual speed to be stable, continuation judges itself and target
Whether rotating speed is consistent, and to make actual speed closest to rotating speed of target, so as to obtain expected operational effect, improves copped wave tune
The practicality and Consumer's Experience of fast process.
According to one embodiment of present invention, it is described judge the actual speed it is whether equal with the rotating speed of target it
Afterwards, also include：When judged result is that the actual speed is equal with the rotating speed of target, continue according between the copped wave time
Every carrying out chopping regulating speed to the motor；When the judged result is that the actual speed is unequal with the rotating speed of target,
According to the actual speed and the difference of the rotating speed of target, the size of the copped wave time interval is adjusted, and according to adjustment
The copped wave time interval afterwards carries out chopping regulating speed to the motor.
Motor speed control method according to embodiments of the present invention, if motor actual speed is equal with rotating speed of target,
Then continue to carry out chopping regulating speed to motor according to current copped wave time interval, if motor actual speed and rotating speed of target not phase
Meanwhile, the regulation level of the voltage effective value to motor can be changed by changing copped wave time interval, so that the electricity of motor
It is pressed with valid value and reaches the level that actual speed can be maintained rotating speed of target as early as possible.By the technical scheme, can be in reality
After stabilization of speed, continuation judges whether it is consistent with rotating speed of target, to make actual speed closest to rotating speed of target, so as to obtain
Expected operational effect, improves the practicality and Consumer's Experience of chopping regulating speed.
The embodiment of a second aspect of the present invention proposes a kind of motor speed regulating system, for air-conditioner, including：If
Unit is put, is that the motor of the air-conditioner arranges rotating speed of target according to the setting command for receiving, and turned according to the target
Speed, is that the motor arranges copped wave time interval；Select unit, according to the rotating speed of target, at multiple turns of the air-conditioner
It is the selection of Motor rotating speed of target gear in fast gear, wherein, the plurality of rotating speed gear corresponds to multiple rated speeds；The
One detector unit, detects the corresponding phase voltage of the rotating speed of target gear；Adjustment unit, whenever detecting the phase voltage
During zero passage, chopping regulating speed is carried out to the motor according to the copped wave time interval.
Motor speed regulating system according to embodiments of the present invention, is that the motor of air-conditioner is provided with and multiple voltage-phases
Corresponding multiple rotating speed gears, and selection one carries out work with the immediate rotating speed gear of rotating speed of target in multiple rotating speed gears
Make, now, whenever the phase voltage zero passage under current rotating speed gear is detected, copped wave is carried out to a certain phase or two-phase of motor
Speed governing, to change the voltage effective value of motor, so as to the rotating speed of regulation motor.By the technical scheme, first to the electricity of air-conditioner
Machine carries out tap speed-regulating, is selected to provide the gear with the immediate rotating speed of rotating speed of target, on this basis, then to motor
Chopping regulating speed is carried out, so as to the copped wave amount to electric moter voltage will be greatly reduced, it is possible to reduce by voltage and current under chopping regulating speed
Vibration and noise caused by distortion, improve the quiet degree of air-conditioner operation, improve the performance of product, improve user's body
Test.
According to one embodiment of present invention, the select unit includes：First judging unit, judges the plurality of rotating speed
Whether there is rated speed to be equal to the rotating speed gear of the rotating speed of target in gear, wherein, when judged result is to be, will be described
Rotating speed gear is set to the rotating speed of target gear of the motor, is described in the selection of Motor when judged result is no
Rated speed and the rotating speed of target closest to and more than the rotating speed gear of the rotating speed of target.
Motor speed regulating system according to embodiments of the present invention, if be equal to rated speed in multiple rotating speed gears
The rotating speed gear of rotating speed of target, then be set to rotating speed of target gear by the rotating speed gear, makes motor under the gear of rotating speed of target
Work, otherwise, selects and rotating speed gear more than rotating speed of target most close with rotating speed of target as rotating speed of target gear, so as to electricity
The actual speed of machine can as early as possible reach the level of rotating speed of target.By the technical scheme, can select in multiple rotating speed gears
Select one to be operated with the immediate rotating speed gear of rotating speed of target, that is to say, that make the virtual value of virtual voltage as far as possible with
The virtual value of rated voltage is closest, so as to reduce copped wave amount in follow-up chopping process, shortens the copped wave time, reduces
By vibration and noise caused by voltage and current distortion under chopping regulating speed, the quiet degree of air-conditioner operation is improve.
According to one embodiment of present invention, the adjustment unit includes：Opening unit, turns whenever the target is detected
During the voltage zero-cross under fast gear, in ensuing every half voltage cycle, the power device of the air-conditioner is opened
Drive circuit；Closing unit, after the working time of the drive circuit reaches the copped wave time interval, disconnects the drive
Dynamic circuit, with by the actual speed for adjusting the virtual value of the voltage to adjust the motor.
Motor speed regulating system according to embodiments of the present invention, whenever detecting the voltage zero-cross under rotating speed of target gear
When, the main control chip of air-conditioner opens the drive circuit of air-conditioner, chopping regulating speed is carried out to motor, so as to the reality of regulation motor
Rotating speed, when the working time of drive circuit copped wave time interval is reached, main control chip disconnects drive circuit, so as to complete half
The voltage chopping in cycle.By the technical scheme, can effectively adjust target and turn by tap speed-regulating in combination with chopping regulating speed
Voltage effective value under fast gear, reduces the rotating speed of motor.
According to one embodiment of present invention, also include：Second detector unit, according to the copped wave time interval to institute
Stating motor is carried out after chopping regulating speed, and whether the actual speed for detecting the motor stablizes constant；And the regulation list
Unit also includes：Second judging unit, when it is determined that the actual speed stablizes constant, judge the actual speed whether with it is described
Rotating speed of target is equal.
Motor speed regulating system according to embodiments of the present invention, when voltage effective value tends towards stability, the reality of motor
Rotating speed also tends to stablize, at this point it is possible to actual speed is detected, if actual speed now still has difference with rotating speed of target
Away from stepless time adjustment can be proceeded.By the technical scheme, can be after actual speed to be stable, continuation judges itself and target
Whether rotating speed is consistent, and to make actual speed closest to rotating speed of target, so as to obtain expected operational effect, improves copped wave tune
The practicality and Consumer's Experience of fast process.
According to one embodiment of present invention, the adjustment unit is additionally operable to：When second judging unit judges described
When actual speed is equal with the rotating speed of target, continuation carries out chopping regulating speed according to the copped wave time interval to the motor；
When second judging unit judges that the actual speed is unequal with the rotating speed of target, according to the actual speed and institute
State the difference of rotating speed of target, adjust the size of the copped wave time interval, and according to adjustment after the copped wave time interval
Chopping regulating speed is carried out to the motor.
Motor speed regulating system according to embodiments of the present invention, if motor actual speed is equal with rotating speed of target,
Then continue to carry out chopping regulating speed to motor according to current copped wave time interval, if motor actual speed and rotating speed of target not phase
Meanwhile, the regulation level of the voltage effective value to motor can be changed by changing copped wave time interval, so that the electricity of motor
It is pressed with valid value and reaches the level that actual speed can be maintained rotating speed of target as early as possible.By the technical scheme, can be in reality
After stabilization of speed, continuation judges whether it is consistent with rotating speed of target, to make actual speed closest to rotating speed of target, so as to obtain
Expected operational effect, improves the practicality and Consumer's Experience of chopping regulating speed.
The embodiment of a third aspect of the present invention proposes a kind of air-conditioner, including any one of such as above-mentioned technical scheme institute
The motor speed regulating system stated, therefore, the air-conditioner has to be adjusted with the motor speed any one of above-mentioned technical proposal
Section system identical technique effect, will not be described here.
By technical scheme, first tap speed-regulating is carried out to the motor of air-conditioner, be selected to provide and target
The gear of the immediate rotating speed of rotating speed, on this basis, then carries out chopping regulating speed to motor, so as to greatly reduce to motor
The copped wave amount of voltage, it is possible to reduce by vibration and noise caused by voltage and current distortion under chopping regulating speed, improve air-conditioner
The quiet degree of operation, improves the performance of product, improves Consumer's Experience.
Description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become from the description with reference to accompanying drawings below to embodiment
It is substantially and easy to understand, wherein：
Fig. 1 shows the block diagram of motor speed regulating system of the prior art；
Fig. 2 shows the flow chart of motor speed control method according to an embodiment of the invention；
Fig. 3 A show the flow chart of motor speed control method according to another embodiment of the invention；
Fig. 3 B to 3G show the six kinds of circuit diagrams for carrying out motor speed regulation in the embodiment shown in Fig. 3 A；
Fig. 4 shows the flow chart of the chopping regulating speed in the embodiment shown in Fig. 3 A；
Fig. 5 shows the block diagram of motor speed regulating system according to an embodiment of the invention；
Fig. 6 shows the block diagram of air-conditioner according to an embodiment of the invention.
Specific embodiment
It is below in conjunction with the accompanying drawings and concrete real in order to be more clearly understood that the above objects, features and advantages of the present invention
Apply mode to be further described in detail the present invention.It should be noted that in the case where not conflicting, the enforcement of the application
Feature in example and embodiment can be mutually combined.
Many details are elaborated in the following description in order to fully understand the present invention, but, the present invention may be used also
Implemented with being different from other modes described here using other, therefore, protection scope of the present invention is not by described below
Specific embodiment restriction.
Fig. 2 shows the flow chart of motor speed control method according to an embodiment of the invention.
As shown in Fig. 2 motor speed control method according to an embodiment of the invention, including：
Step 202, is that the motor of air-conditioner arranges rotating speed of target according to the setting command for receiving, and according to target
Rotating speed, is that motor arranges copped wave time interval.
Step 204, is selection of Motor rotating speed of target gear in multiple rotating speed gears of air-conditioner according to rotating speed of target,
Wherein, multiple rotating speed gears correspond to multiple rated speeds.
Step 206, the corresponding phase voltage of detection rotating speed of target gear.
Step 208, whenever phase voltage zero passage is detected, chopping regulating speed is carried out according to copped wave time interval to motor.
Motor speed control method according to embodiments of the present invention, is that the motor of air-conditioner is provided with and multiple voltage-phases
Corresponding multiple rotating speed gears, and selection one carries out work with the immediate rotating speed gear of rotating speed of target in multiple rotating speed gears
Make, now, whenever the phase voltage zero passage under current rotating speed gear is detected, copped wave is carried out to a certain phase or two-phase of motor
Speed governing, to change the voltage effective value of motor, so as to the rotating speed of regulation motor.By the technical scheme, first to the electricity of air-conditioner
Machine carries out tap speed-regulating, is selected to provide the gear with the immediate rotating speed of rotating speed of target, on this basis, then to motor
Carry out chopping regulating speed such that it is able to greatly reduce the copped wave amount to electric moter voltage, it is possible to reduce by voltage and electricity under chopping regulating speed
Vibration and noise caused by stream distortion, improve the quiet degree of air-conditioner operation, improve the performance of product, improve user
Experience.
According to one embodiment of present invention, step 204 is specifically included：Whether judge in multiple rotating speed gears with specified
Rotating speed is equal to the rotating speed gear of rotating speed of target；When judged result is to be, rotating speed gear is set to into the rotating speed of target shelves of motor
Position, when judged result for it is no when, be selection of Motor rated speed with rotating speed of target closest to and more than the rotating speed shelves of rotating speed of target
Position.
Motor speed control method according to embodiments of the present invention, if be equal to rated speed in multiple rotating speed gears
The rotating speed gear of rotating speed of target, then be set to rotating speed of target gear by the rotating speed gear, makes motor under the gear of rotating speed of target
Work, otherwise, selects and rotating speed gear more than rotating speed of target most close with rotating speed of target as rotating speed of target gear, so as to electricity
The actual speed of machine can as early as possible reach the level of rotating speed of target.By the technical scheme, can select in multiple rotating speed gears
Select one to be operated with the immediate rotating speed gear of rotating speed of target, that is to say, that make the virtual value of virtual voltage as far as possible with
The virtual value of rated voltage is closest, so as to reduce copped wave amount in follow-up chopping process, shortens the copped wave time, reduces
By vibration and noise caused by voltage and current distortion under chopping regulating speed, the quiet degree of air-conditioner operation is improve.
According to one embodiment of present invention, step 208 is specifically included：Whenever detecting the phase place under rotating speed of target gear
During voltage zero-cross, in ensuing every half voltage cycle, the drive circuit of the power device of air-conditioner is opened；Driving electricity
The working time on road is reached after copped wave time interval, disconnects drive circuit, with the virtual value by adjusting voltage come regulation motor
Actual speed.
Motor speed control method according to embodiments of the present invention, whenever detecting the voltage zero-cross under rotating speed of target gear
When, the main control chip of air-conditioner opens the drive circuit of air-conditioner, chopping regulating speed is carried out to motor, so as to the reality of regulation motor
Rotating speed, when the working time of drive circuit copped wave time interval is reached, main control chip disconnects drive circuit, so as to complete half
The voltage chopping in cycle.By the technical scheme, can effectively adjust target and turn by tap speed-regulating in combination with chopping regulating speed
Voltage effective value under fast gear, reduces the rotating speed of motor.
According to one embodiment of present invention, after step 208, also include：Whether the actual speed of detection motor is steady
It is fixed constant；When it is determined that actual speed stablizes constant, judge whether actual speed is equal with rotating speed of target.
Motor speed control method according to embodiments of the present invention, when voltage effective value tends towards stability, the reality of motor
Rotating speed also tends to stablize, at this point it is possible to actual speed is detected, if actual speed now still has difference with rotating speed of target
Away from stepless time adjustment can be proceeded.By the technical scheme, can be after actual speed to be stable, continuation judges itself and target
Whether rotating speed is consistent, and to make actual speed closest to rotating speed of target, so as to obtain expected operational effect, improves copped wave tune
The practicality and Consumer's Experience of fast process.
According to one embodiment of present invention, after step 208, also include：Judge actual speed whether with target
After rotating speed is equal, when judged result is that actual speed is equal with rotating speed of target, continue according to copped wave time interval to motor
Carry out chopping regulating speed；When judged result is that actual speed is unequal with rotating speed of target, according to actual speed and rotating speed of target
Difference, adjusts the size of copped wave time interval, and carries out chopping regulating speed to motor according to the copped wave time interval after adjustment.
Motor speed control method according to embodiments of the present invention, if motor actual speed is equal with rotating speed of target,
Then continue to carry out chopping regulating speed to motor according to current copped wave time interval, if motor actual speed and rotating speed of target not phase
Meanwhile, the regulation level of the voltage effective value to motor can be changed by changing copped wave time interval, so that the electricity of motor
It is pressed with valid value and reaches the level that actual speed can be maintained rotating speed of target as early as possible.By the technical scheme, can be in reality
After stabilization of speed, continuation judges whether it is consistent with rotating speed of target, to make actual speed closest to rotating speed of target, so as to obtain
Expected operational effect, improves the practicality and Consumer's Experience of chopping regulating speed.
Fig. 3 A show the flow chart of motor speed control method according to another embodiment of the invention.
As shown in figure 3, motor speed control method according to another embodiment of the invention, including：
Step 302, sets target rotating speed.Tap is carried out to motor according to following steps according to table 1 after sets target rotating speed
Speed governing.
Table 1
Step 304, judges whether rotating speed of target is 900rpm, when judged result is to be, into step 306, works as judgement
When being as a result no, into step 308.
Step 306, opens relay 1.
Step 308, judges whether rotating speed of target is 801～899rpm, when judged result is to be, into step 310, when
When judged result is no, into step 314.
Step 310, opens relay 1.
Step 312, carries out chopping regulating speed.
Step 314, judges whether rotating speed of target is 800rpm, when judged result is to be, into step 316, works as judgement
When being as a result no, into step 318.
Step 316, opens relay 2.
Step 318, judges whether rotating speed of target is 701～799rpm, when judged result is to be, into step 320, when
When judged result is no, into step 324.
Step 320, opens relay 2.
Step 322, carries out chopping regulating speed.
Step 324, judges whether rotating speed of target is 700rpm, when judged result is to be, into step 326, works as judgement
When being as a result no, into step 328.
Step 326, opens relay 3.
Step 328, judges whether rotating speed of target is 600～699rpm, when judged result is to be, into step 330.
Step 330, opens relay 3.
Step 332, carries out chopping regulating speed.
Fig. 3 B to 3G show the six kinds of circuit diagrams for carrying out motor speed regulation in the embodiment shown in Fig. 3 A, wherein,
The mode that tap speed-regulating is carried out in Fig. 3 B to 3G is different, and power device carries out the power supply of the voltage for motor of copped wave in Fig. 3 B
Voltage, the voltage that power device carries out copped wave in Fig. 3 C to 3G is phase voltage, but chopping regulating speed is carried out in Fig. 3 B to 3G
Mode is all identical.
Fig. 4 shows the flow chart of the chopping regulating speed in the embodiment shown in Fig. 3 A.
As shown in figure 4, the idiographic flow of the chopping regulating speed in the embodiment shown in Fig. 3 A includes：
Step 402, enters chopping regulating speed after selection target gear.
Step 404, arranges the time interval for opening and closing power device.I.e. according to rotating speed of target, set interval.
Step 406, judges whether the zero cross signal for detecting voltage, when judged result is to be, into step 408, when
When judged result is no, the zero cross signal for continuing detection voltage is returned.
Step 408, controls at set intervals the drive circuit break-make of power device.Zero crossing is reached in voltage
When, in ensuing once for every half, the drive circuit of power device is opened and disconnected successively, when power device disconnects,
The value of voltage is zero, i.e., the waveform in the time interval is decapitated, and the waveform of electric current now is also relatively stable, is distorted less.
Step 410, judges that the actual speed of motor is whether stable, when judged result is to be, into step 412, when sentencing
When disconnected result is no, whether stable the actual speed for continuing to detect motor is returned.If actual speed now and rotating speed of target
Still there is gap, stepless time adjustment can be proceeded.By the technical scheme, can be after actual speed to be stable, continuation judges it
Whether it is consistent with rotating speed of target, to make actual speed closest to rotating speed of target, so as to obtain expected operational effect, improves
The practicality and Consumer's Experience of stepless time adjustment process.
Step 412, detects the actual speed of motor.
Whether step 414, the actual speed for judging motor is equal to rotating speed of target, when judged result is to be, into step
416, when judged result is no, into step 418.
Step 416, continues the drive circuit break-make for controlling power device at set intervals.If actual speed
Equal to rotating speed of target, then can proceed stepless time adjustment according to default time interval, to ensure the voltage effective value of motor
It is stable in currency, so that further actual speed is maintained into rotating speed of target.
Whether step 418, judge the actual speed of motor less than rotating speed of target, when judged result is to be, into step
420, when judged result is no, into step 422.If actual speed is not equal to rotating speed of target, can be by during change
Between interval changing the regulation level of the voltage effective value to motor, so as to the voltage effective value of motor reaches as early as possible actual will turn
Speed maintains the level of rotating speed of target.
Step 420, reduces the time interval of the drive circuit break-make of control power device.
Step 422, the time interval of the drive circuit break-make of increase control power device.
By above-mentioned technical proposal, can be eliminated by vibration and noise caused by voltage and current distortion by chopping regulating speed,
The quiet degree of air-conditioner operation is improve, improves the performance of product, improve Consumer's Experience.
Fig. 5 shows the block diagram of motor speed regulating system according to an embodiment of the invention.
As shown in figure 5, motor speed regulating system 500 according to an embodiment of the invention, including：Setting unit
502, it is that the motor of air-conditioner arranges rotating speed of target according to the setting command for receiving, and be that motor sets according to rotating speed of target
Put copped wave time interval；Select unit 504, is selection of Motor mesh in multiple rotating speed gears of air-conditioner according to rotating speed of target
Mark rotating speed gear, wherein, multiple rotating speed gears correspond to multiple rated speeds；First detector unit 506, detects rotating speed of target shelves
The corresponding phase voltage in position；Adjustment unit 508, whenever phase voltage zero passage is detected, according to copped wave time interval to motor
Carry out chopping regulating speed.
Motor speed regulating system 500 according to embodiments of the present invention, is that the motor of air-conditioner is provided with and multiple voltages
The corresponding multiple rotating speed gears of phase place, and selection one is entered with the immediate rotating speed gear of rotating speed of target in multiple rotating speed gears
Row work, now, whenever the phase voltage zero passage under current rotating speed gear is detected, is carried out to a certain phase or two-phase of motor
Chopping regulating speed, to change the voltage effective value of motor, so as to the rotating speed of regulation motor.By the technical scheme, first to air-conditioner
Motor carry out tap speed-regulating, be selected to provide and the gear of the immediate rotating speed of rotating speed of target, on this basis, then right
Motor carries out chopping regulating speed, so as to greatly reduce the copped wave amount to electric moter voltage, it is possible to reduce under chopping regulating speed by voltage and
Vibration and noise caused by current distortion, improve the quiet degree of air-conditioner operation, improve the performance of product, improve use
Experience at family.
According to one embodiment of present invention, select unit 504 includes：First judging unit 5042, judges multiple rotating speeds
Whether there is rated speed to be equal to the rotating speed gear of rotating speed of target in gear, wherein, when judged result is to be, by rotating speed gear
The rotating speed of target gear of motor is set to, is that selection of Motor rated speed is closest with rotating speed of target when judged result is no
And more than the rotating speed gear of rotating speed of target.
Motor speed regulating system 500 according to embodiments of the present invention, if having rated speed in multiple rotating speed gears
Equal to the rotating speed gear of rotating speed of target, then the rotating speed gear is set to into rotating speed of target gear, makes motor in the shelves of rotating speed of target
The lower work in position, otherwise, selects and rotating speed gear more than rotating speed of target most close with rotating speed of target as rotating speed of target gear, with
Just the actual speed of motor can as early as possible reach the level of rotating speed of target.By the technical scheme, can be in multiple rotating speed gears
Middle selection one is operated with the immediate rotating speed gear of rotating speed of target, that is to say, that the virtual value for making virtual voltage to the greatest extent may be used
Can be closest with the virtual value of rated voltage, so as to copped wave amount can be reduced in follow-up chopping process, shorten the copped wave time,
Reduce under chopping regulating speed by vibration and noise caused by voltage and current distortion, improve the quiet degree of air-conditioner operation.
According to one embodiment of present invention, adjustment unit 508 includes：Opening unit 5082, turns whenever target is detected
During voltage zero-cross under fast gear, in ensuing every half voltage cycle, the driving electricity of the power device of air-conditioner is opened
Road；Closing unit 5084, after the working time of drive circuit reaches copped wave time interval, disconnects drive circuit, with by adjusting
The virtual value of economize on electricity pressure carrys out the actual speed of regulation motor.
Motor speed regulating system 500 according to embodiments of the present invention, whenever detecting the voltage under rotating speed of target gear
During zero passage, the main control chip of air-conditioner opens the drive circuit of air-conditioner, chopping regulating speed is carried out to motor, so as to regulation motor
Actual speed, when the working time of drive circuit copped wave time interval is reached, main control chip disconnects drive circuit, so as to complete
The voltage chopping of half period.By the technical scheme, mesh can be effectively adjusted by tap speed-regulating in combination with chopping regulating speed
Voltage effective value under mark rotating speed gear, reduces the rotating speed of motor.
According to one embodiment of present invention, also include：Second detector unit 510, according to copped wave time interval to electricity
Machine is carried out after chopping regulating speed, and whether the actual speed for detecting motor stablizes constant；And adjustment unit 508 also includes：Second
Judging unit 5086, when it is determined that actual speed stablizes constant, judges whether actual speed is equal with rotating speed of target.
Motor speed regulating system 500 according to embodiments of the present invention, when voltage effective value tends towards stability, the reality of motor
Border rotating speed also tends to stablize, at this point it is possible to actual speed is detected, if actual speed now still has with rotating speed of target
Gap, can proceed stepless time adjustment.By the technical scheme, can be after actual speed to be stable, continuation judges itself and mesh
Whether mark rotating speed is consistent, and to make actual speed closest to rotating speed of target, so as to obtain expected operational effect, improves copped wave
The practicality and Consumer's Experience of speed regulation process.
According to one embodiment of present invention, adjustment unit 508 is additionally operable to：When the second judging unit 5086 judges actual turning
When speed is equal with rotating speed of target, continuation carries out chopping regulating speed according to copped wave time interval to motor；When the second judging unit 5086
When judging that actual speed is unequal with rotating speed of target, according to actual speed and the difference of rotating speed of target, copped wave time interval is adjusted
Size, and chopping regulating speed is carried out to motor according to the copped wave time interval after adjustment.
Motor speed regulating system 500 according to embodiments of the present invention, if motor actual speed is equal with rotating speed of target
When, then continue to carry out chopping regulating speed to motor according to current copped wave time interval, if motor actual speed and rotating speed of target
When differing, the regulation level of the voltage effective value to motor can be changed by changing copped wave time interval, so that motor
Voltage effective value reach the level that actual speed can be maintained rotating speed of target as early as possible.By the technical scheme, Ke Yi
After actual speed is stable, continuation judges whether it is consistent with rotating speed of target, to make actual speed closest to rotating speed of target, so as to
Expected operational effect is obtained, the practicality and Consumer's Experience of chopping regulating speed is improved.
Fig. 6 shows the block diagram of air-conditioner according to an embodiment of the invention.
As shown in fig. 6, air-conditioner according to an embodiment of the invention 600, including：Motor speed regulating system 602
(equivalent to the motor speed regulating system 500 in the embodiment shown in Fig. 5), is empty for the setting command that basis is received
The motor for adjusting device arranges rotating speed of target, and is that motor arranges copped wave time interval according to rotating speed of target；According to rotating speed of target,
It is selection of Motor rotating speed of target gear in multiple rotating speed gears of air-conditioner, wherein, multiple rotating speed gears correspond to multiple volumes
Determine rotating speed；The corresponding phase voltage of detection rotating speed of target gear；Whenever phase voltage zero passage is detected, according between the copped wave time
Every carrying out chopping regulating speed to motor.
Air-conditioner 600 according to embodiments of the present invention, is provided with multiple rotating speed gears corresponding with multiple voltage-phases, and
One is selected in multiple rotating speed gears to be operated with the immediate rotating speed gear of rotating speed of target, now, work as whenever detecting
During phase voltage zero passage under front rotating speed gear, chopping regulating speed is carried out to a certain phase or two-phase of motor, to change the electricity of motor
Valid value is pressed with, so as to the rotating speed of regulation motor.By the technical scheme, first tap speed-regulating is carried out to the motor of air-conditioner 600, selected
The gear that can be provided with the immediate rotating speed of rotating speed of target is provided, on this basis, then chopping regulating speed is carried out to motor, so as to
The copped wave amount to electric moter voltage can be greatly reduced, it is possible to reduce under chopping regulating speed by voltage and current distortion caused by vibration and
Noise, improves the quiet degree of the operation of air-conditioner 600, improves the performance of product, improves Consumer's Experience.
According to one embodiment of present invention, motor speed regulating system 602 is used for：Whether judge in multiple rotating speed gears
The rotating speed gear of rotating speed of target is equal to rated speed；When judged result is to be, rotating speed gear is set to into the mesh of motor
Mark rotating speed gear, when judged result for it is no when, be selection of Motor rated speed with rotating speed of target closest to and more than rotating speed of target
Rotating speed gear.
Air-conditioner 600 according to embodiments of the present invention, if having rated speed to turn equal to target in multiple rotating speed gears
The rotating speed gear of speed, then be set to rotating speed of target gear by the rotating speed gear, makes motor work under the gear of rotating speed of target, no
Then, and rotating speed gear more than rotating speed of target most close with rotating speed of target is selected as rotating speed of target gear, so as to the reality of motor
Border rotating speed can as early as possible reach the level of rotating speed of target.By the technical scheme, one can be selected in multiple rotating speed gears
Be operated with the immediate rotating speed gear of rotating speed of target, that is to say, that make the virtual value of virtual voltage as far as possible with specified electricity
The virtual value of pressure is closest, so as to reduce copped wave amount in follow-up chopping process, shortens the copped wave time, reduces copped wave and adjusts
By vibration and noise caused by voltage and current distortion under speed, the quiet degree of the operation of air-conditioner 600 is improve.
According to one embodiment of present invention, motor speed regulating system 602 is used for：Whenever detecting rotating speed of target gear
Under phase voltage zero passage when, in ensuing every half voltage cycle, open air-conditioner 600 power device driving electricity
Road；After the working time of drive circuit reaches copped wave time interval, drive circuit is disconnected, with the virtual value by adjusting voltage
Carry out the actual speed of regulation motor.
Air-conditioner 600 according to embodiments of the present invention, whenever the voltage zero-cross under rotating speed of target gear is detected, air-conditioning
The main control chip of device 600 opens the drive circuit of air-conditioner 600, chopping regulating speed is carried out to motor, so as to the reality of regulation motor
Rotating speed, when the working time of drive circuit copped wave time interval is reached, main control chip disconnects drive circuit, so as to complete half
The voltage chopping in cycle.By the technical scheme, can effectively adjust target and turn by tap speed-regulating in combination with chopping regulating speed
Voltage effective value under fast gear, reduces the rotating speed of motor.
According to one embodiment of present invention, motor speed regulating system 602 is additionally operable to：Detecting the actual speed of motor is
It is no to stablize constant；When it is determined that actual speed stablizes constant, judge whether actual speed is equal with rotating speed of target.
Air-conditioner 600 according to embodiments of the present invention, when voltage effective value tends towards stability, the actual speed of motor also becomes
In stable, at this point it is possible to detect to actual speed, if actual speed now still has gap with rotating speed of target, can be with
Proceed stepless time adjustment.By the technical scheme, can be after actual speed be stable, whether continuation judges it with rotating speed of target
It is consistent, to make actual speed closest to rotating speed of target, so as to obtain expected operational effect, improves chopping regulating speed process
Practicality and Consumer's Experience.
According to one embodiment of present invention, motor speed regulating system 602 is additionally operable to：Judge actual speed whether with
After rotating speed of target is equal, when judged result is that actual speed is equal with rotating speed of target, continue according to copped wave time interval pair
Motor carries out chopping regulating speed；When judged result is that actual speed is unequal with rotating speed of target, turned according to actual speed and target
The difference of speed, adjusts the size of copped wave time interval, and carries out copped wave tune to motor according to the copped wave time interval after adjustment
Speed.
Air-conditioner 600 according to embodiments of the present invention, if motor actual speed is equal with rotating speed of target, according to work as
Front copped wave time interval continues to carry out chopping regulating speed to motor, if motor actual speed is differed with rotating speed of target, can
To change the regulation level of the voltage effective value to motor by changing copped wave time interval, so that the voltage effective value of motor
Reaching as early as possible, actual speed can be maintained the level of rotating speed of target.By the technical scheme, can be stable in actual speed
Afterwards, continue to judge whether it is consistent with rotating speed of target, to make actual speed closest to rotating speed of target, so as to obtain expected fortune
Row effect, improves the practicality and Consumer's Experience of chopping regulating speed.
Technical scheme is described in detail above in association with accompanying drawing, by technical scheme, first to air-conditioning
The motor of device carries out tap speed-regulating, is selected to provide the gear with the immediate rotating speed of rotating speed of target, on this basis, then
Chopping regulating speed is carried out to motor, so as to the copped wave amount to electric moter voltage will be greatly reduced, it is possible to reduce by voltage under chopping regulating speed
With vibration and noise caused by current distortion, the quiet degree of air-conditioner operation is improve, improve the performance of product, improved
Consumer's Experience.
Embodiments of the invention are the foregoing is only, the present invention is not limited to, for those skilled in the art
For member, the present invention can have various modifications and variations.All any modifications within the spirit and principles in the present invention, made,
Equivalent, improvement etc., should be included within the scope of the present invention.
Claims (11)
1. a kind of motor speed control method, for air-conditioner, it is characterised in that include：
It is that the motor of the air-conditioner arranges rotating speed of target according to the setting command for receiving, and according to the rotating speed of target,
For the motor, copped wave time interval is set；
It is the selection of Motor rotating speed of target gear in multiple rotating speed gears of the air-conditioner according to the rotating speed of target,
Wherein, the plurality of rotating speed gear corresponds to multiple rated speeds；
Detect the corresponding phase voltage of the rotating speed of target gear；
Whenever the phase voltage zero passage is detected, chopping regulating speed is carried out to the motor according to the copped wave time interval.
2. motor speed control method according to claim 1, it is characterised in that multiple turns in the air-conditioner
It is the selection of Motor rotating speed of target gear in fast gear, specifically includes：
Judge whether there is rated speed to be equal to the rotating speed gear of the rotating speed of target in the plurality of rotating speed gear；
When judged result is to be, the rotating speed gear is set to into the rotating speed of target gear of the motor,
When judged result for it is no when, be rated speed described in the selection of Motor with the rotating speed of target closest to and more than described
The rotating speed gear of rotating speed of target.
3. motor speed control method according to claim 2, it is characterised in that described whenever detecting the phase place electricity
When pressing through zero, chopping regulating speed is carried out to the motor according to the copped wave time interval, specifically included：
Whenever the phase voltage zero passage under the rotating speed of target gear is detected, in ensuing every half voltage cycle
It is interior, open the drive circuit of the power device of the air-conditioner；
After the working time of the drive circuit reaches the copped wave time interval, the drive circuit is disconnected, with by adjusting
Save the virtual value of the voltage to adjust the actual speed of the motor.
4. motor speed control method according to claim 3, it is characterised in that according to the copped wave time interval pair
The motor is carried out after chopping regulating speed, is also included：
Whether the actual speed for detecting the motor stablizes constant；
When it is determined that the actual speed stablizes constant, judge whether the actual speed is equal with the rotating speed of target.
5. motor speed control method according to claim 4, it is characterised in that judge that the actual speed is described
It is no it is equal with the rotating speed of target after, also include：
When judged result is that the actual speed is equal with the rotating speed of target, continue according to the copped wave time interval to institute
Stating motor carries out chopping regulating speed；
When the judged result be the actual speed it is unequal with the rotating speed of target when, according to the actual speed with it is described
The difference of rotating speed of target, adjusts the size of the copped wave time interval, and
The copped wave time interval after according to adjustment carries out chopping regulating speed to the motor.
6. a kind of motor speed regulating system, for air-conditioner, it is characterised in that include：
Setting unit, is that the motor of the air-conditioner arranges rotating speed of target according to the setting command for receiving, and according to described
Rotating speed of target, is that the motor arranges copped wave time interval；
Select unit, is the selection of Motor target in multiple rotating speed gears of the air-conditioner according to the rotating speed of target
Rotating speed gear, wherein, the plurality of rotating speed gear corresponds to multiple rated speeds；
First detector unit, detects the corresponding phase voltage of the rotating speed of target gear；
Adjustment unit, whenever the phase voltage zero passage is detected, is carried out according to the copped wave time interval to the motor
Chopping regulating speed.
7. motor speed regulating system according to claim 6, it is characterised in that the select unit includes：
First judging unit, judges whether there is rated speed to be equal to the rotating speed of the rotating speed of target in the plurality of rotating speed gear
Gear, wherein, when judged result is to be, the rotating speed gear is set to into the rotating speed of target gear of the motor, when
Judged result for it is no when, be rated speed described in the selection of Motor with the rotating speed of target closest to and turn more than the target
The rotating speed gear of speed.
8. motor speed regulating system according to claim 7, it is characterised in that the adjustment unit includes：
Opening unit, whenever the voltage zero-cross under the rotating speed of target gear is detected, ensuing electric per half
In the pressure cycle, the drive circuit of the power device of the air-conditioner is opened；
Closing unit, after the working time of the drive circuit reaches the copped wave time interval, disconnects the drive circuit,
With by the actual speed for adjusting the virtual value of the voltage to adjust the motor.
9. motor speed regulating system according to claim 8, it is characterised in that also include：
Second detector unit, after chopping regulating speed is carried out to the motor according to the copped wave time interval, detects the electricity
Whether the actual speed of machine stablizes constant；And
The adjustment unit also includes：
Second judging unit, when it is determined that the actual speed stablizes constant, judge the actual speed whether with the target
Rotating speed is equal.
10. motor speed regulating system according to claim 9, it is characterised in that the adjustment unit is additionally operable to：
When second judging unit judges that the actual speed is equal with the rotating speed of target, continue according to during the copped wave
Between be spaced chopping regulating speed carried out to the motor, and
When second judging unit judges that the actual speed is unequal with the rotating speed of target, according to the actual speed
With the difference of the rotating speed of target, the size of the copped wave time interval is adjusted, and
The copped wave time interval after according to adjustment carries out chopping regulating speed to the motor.
11. a kind of air-conditioners, it is characterised in that include that the motor speed as any one of claim 6 to 10 adjusts system
System.
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| CN201410719629.1A CN104539213B (en) | 2014-11-28 | 2014-11-28 | Motor rotating speed adjusting method, motor rotating speed adjusting system, and air conditioner |
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| CN201410719629.1A CN104539213B (en) | 2014-11-28 | 2014-11-28 | Motor rotating speed adjusting method, motor rotating speed adjusting system, and air conditioner |
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| CN104539213B true CN104539213B (en) | 2017-04-19 |
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| CN106487320B (en) * | 2016-11-02 | 2019-02-26 | 珠海格力电器股份有限公司 | PG motor control method and device |
| CN106839269B (en) * | 2016-12-26 | 2019-08-27 | 奥克斯空调股份有限公司 | A kind of air conditioning comfortableness control method |
| CN110907822B (en) * | 2019-10-31 | 2021-03-30 | 珠海格力电器股份有限公司 | Alternating current motor locked rotor fault detection system and method and information data processing terminal |
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