CN104534615B - Motor speed adjusting method, motor speed regulating system and air-conditioner - Google Patents
Motor speed adjusting method, motor speed regulating system and air-conditioner Download PDFInfo
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- CN104534615B CN104534615B CN201410709412.2A CN201410709412A CN104534615B CN 104534615 B CN104534615 B CN 104534615B CN 201410709412 A CN201410709412 A CN 201410709412A CN 104534615 B CN104534615 B CN 104534615B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
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Abstract
The invention provides a kind of motor speed adjusting method, a kind of motor speed regulating system and a kind of air-conditioner, motor speed adjusting method therein includes：It is that the motor of air-conditioner sets rotating speed of target according to the setting command for receiving；According to rotating speed of target, multiple time intervals are set；Detect the supply voltage of air-conditioner；When it is zero to detect supply voltage, in ensuing half voltage cycle, the drive circuit of the power device of air-conditioner is repeatedly opened and disconnects according to multiple time intervals successively, with the virtual value by regulating power source voltage come the actual speed of regulation motor.By technical scheme, during stepless speed regulation, the copped wave time of power device can be dispersed in whole voltage waveform, such that it is able to eliminate by vibration and noise caused by voltage and current distortion, improve the quiet degree of air-conditioner operation, improve the performance of product, improve Consumer's Experience.
Description
Technical field
The present invention relates to air-conditioning technical field, in particular to a kind of motor speed adjusting 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, the drive circuit of power device, motor body and speed feedback device.The master control core
Piece is mainly accurately turned on and off by drive circuit according to the zero cross signal of supply voltage to power device；The mistake
Zero detects that circuit, by detecting the waveform of supply voltage, the moment of voltage zero-cross is provided for main control chip, thinks and is switched on or off
Signal sends offer starting point；The power device and drive circuit are switched on or off electricity according to the control command of main control chip
Road, to modulate preferable voltage waveform, for motor provides preferable power supply；The motor is the friendship with speed feedback device
Stream asynchronous machine.
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 such as Fig. 2
Each shown half-wave cuts the waveform of the part at T time interval, and the distortion of its electric current is also larger.Power device copped wave is got over
Many, the voltage effective value for supplying motor is just smaller, and motor speed is lower.In theory, be able to can be realized from 0 by this method
Speed governing in the range of to rated 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 substantially larger than rotating speed of target of motor is detected, can increase power device copped wave
Time, the actual speed of motor declines the virtual value step-down due to voltage so that infinite approach rotating speed of target, until etc.
In rotating speed of target.Similarly, 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, by motor speed stabilization in rotating speed of target.
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
Once, the distortion so to being added in the waveform of the voltage and current of motor side is very big, although Ke Yishi for the waveform copped wave in individual cycle
The stabilization of existing motor speed, but operation to motor can affect, and motor is produced very big noise,
And produce vibration or resonance etc..
Therefore, how to be eliminated during stepless speed regulation by vibration and noise caused by voltage and current distortion, as mesh
Preceding technical problem urgently to be resolved hurrily.
The content of the invention
The present invention is based on above mentioned problem, it is proposed that a kind of new technical scheme, can disappear during stepless speed regulation
Except by vibration and noise caused by voltage and current distortion.
Therefore, it is an object of the present invention to propose a kind of motor speed adjusting method.
It is another object of the present invention to propose 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.
To achieve the above object, the embodiment of the first aspect of the present invention proposes a kind of motor speed adjusting method, uses
In air-conditioner, including：It is that the motor of the air-conditioner sets rotating speed of target according to the setting command for receiving；According to the mesh
Mark rotating speed, sets multiple time intervals；Detect the supply voltage of the air-conditioner；It is zero whenever the supply voltage is detected
When, in ensuing half voltage cycle, the air-conditioner is repeatedly opened and disconnects according to the multiple time interval successively
Power device drive circuit, with by the actual speed for adjusting the virtual value of the supply voltage to adjust the motor.
Motor speed adjusting method according to embodiments of the present invention, when voltage reaches zero crossing, ensuing per half
In the individual cycle, the drive circuit of power device is opened and disconnected in circulation, and when power device disconnects, the value of voltage is zero, i.e., should
Waveform in time interval is decapitated.The copped wave of multiple short time is carried out by the waveform to once for every half, thus it is possible to vary empty
The voltage effective value of the motor of device is adjusted, so that the further rotating speed of regulation motor.By the technical scheme, in stepless speed regulation process
In, the copped wave time of power device can be dispersed in whole voltage waveform, distorted by voltage and current such that it is able to eliminate
Caused vibration and noise, improve the quiet degree of air-conditioner operation, improve the performance of product, improve Consumer's Experience.
According to one embodiment of present invention, the motor is adjusted by controlling the break-make of the power device described
Actual speed after, also include：Detect whether the actual speed of the motor stablizes constant；When it is determined that the reality turns
When speed stablizes constant, judge whether the actual speed is equal with the rotating speed of target.
Motor speed adjusting method according to embodiments of the present invention, according to multiple time intervals of initial setting up to motor
Voltage when carrying out copped wave, when voltage effective value tends towards stability, the actual speed of motor also tends to stabilization, at this point it is possible to right
Actual speed detected, if actual speed now still has gap with rotating speed of target, can proceed stepless speed regulation.It is logical
The technical scheme is crossed, can be after actual speed stabilization, 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, the practicality and Consumer's Experience of stepless speed regulation process are improved.
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 be the actual speed it is equal with the rotating speed of target when, continue successively according to it is the multiple when
Between interval repeatedly open and disconnect the drive circuit；When the judged result be the actual speed with the rotating speed of target not
When equal, according to the actual speed and the difference of the rotating speed of target, the size of the multiple time interval, Yi Jiyi are adjusted
The secondary the multiple time interval according to after regulation is repeatedly opened and disconnects the drive circuit.
Motor speed adjusting method according to embodiments of the present invention, if actual speed is equal to rotating speed of target, can be by
Proceed stepless speed regulation according to default multiple time intervals, to ensure the voltage effective value stabilization of motor in currency, so that
Actual speed is further maintained into rotating speed of target.And if actual speed is not equal to rotating speed of target, then can be many by changing
Individual time interval changes the regulation level to the voltage effective value of motor, so that the voltage effective value of motor reaches reality as early as possible
Border rotating speed maintains the level of rotating speed of target.By the technical scheme, can be after actual speed stabilization, 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 stepless
The practicality and Consumer's Experience of speed regulation process.
According to one embodiment of present invention, the difference according to the actual speed and the rotating speed of target, regulation
The size of the multiple time interval, specifically includes：When the actual speed is more than the rotating speed of target, increase the multiple
Each time interval or any time interval in time interval；When the actual speed is less than the rotating speed of target, reduce
Described each time interval or any time interval in the multiple time interval.
Motor speed adjusting method according to embodiments of the present invention, when actual speed is more than rotating speed of target, can be by drop
The voltage effective value of low motor reduces the actual speed of motor, every when increasing copped wave accordingly, it would be desirable to copped wave is put more effort
The duration of individual time interval or any time interval.Conversely, when actual speed is less than rotating speed of target, can be by increasing motor
Voltage effective value increases the actual speed of motor, accordingly, it would be desirable to by the reduction of copped wave dynamics, between each time when reducing copped wave
Every or any time interval duration.By the technical scheme, the copped wave time of power device is being dispersed in whole voltage wave
After in shape, rotating speed can also be further adjusted by changing the length of copped wave time, so as to increased the standard of stepless speed regulation
True property, eliminates by vibration and noise caused by voltage and current distortion significantly, improves the quiet degree of air-conditioner operation, changes
The performance of kind product, improves Consumer's Experience.
According to one embodiment of present invention, in half voltage cycle, the size phase of the multiple time interval
Together, or the multiple time interval increases or reduce successively according to predetermined ratio coefficient.
Motor speed adjusting method according to embodiments of the present invention, in every half voltage cycle, multiple time intervals
Size can be all identical, it is also possible to increases successively or reduces according to predetermined proportionality coefficient, it is, of course, also possible to according to as needed
The size of other rule settings multiple time interval in addition.
The embodiment of the 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 sets rotating speed of target, and turned according to the target according to the setting command for receiving
Speed, sets multiple time intervals；Voltage detection unit, detects the supply voltage of the air-conditioner；Adjustment unit, whenever detecting
When the supply voltage is zero, in ensuing half voltage cycle, repeatedly opened according to the multiple time interval successively
With the drive circuit of the power device for disconnecting the air-conditioner, it is described to be adjusted by adjusting the virtual value of the supply voltage
The actual speed of motor.
Motor speed regulating system according to embodiments of the present invention, when voltage reaches zero crossing, ensuing per half
In the individual cycle, the drive circuit of power device is opened and disconnected in circulation, and when power device disconnects, the value of voltage is zero, i.e., should
Waveform in time interval is decapitated.The copped wave of multiple short time is carried out by the waveform to once for every half, thus it is possible to vary empty
The voltage effective value of the motor of device is adjusted, so that the further rotating speed of regulation motor.By the technical scheme, in stepless speed regulation process
In, the copped wave time of power device can be dispersed in whole voltage waveform, distorted by voltage and current such that it is able to eliminate
Caused vibration and noise, improve the quiet degree of air-conditioner operation, improve the performance of product, improve Consumer's Experience.
According to one embodiment of present invention, also include：Rotation speed detection unit, described by controlling the power device
Break-make come after the actual speed for adjusting the motor, detect whether the actual speed of the motor stablizes constant；Sentence
Disconnected unit, when it is determined that the actual speed stablizes constant, judges whether the actual speed is equal with the rotating speed of target.
Motor speed regulating system according to embodiments of the present invention, according to multiple time intervals of initial setting up to motor
Voltage when carrying out copped wave, when voltage effective value tends towards stability, the actual speed of motor also tends to stabilization, at this point it is possible to right
Actual speed detected, if actual speed now still has gap with rotating speed of target, can proceed stepless speed regulation.It is logical
The technical scheme is crossed, can be after actual speed stabilization, 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, the practicality and Consumer's Experience of stepless speed regulation process are improved.
According to one embodiment of present invention, the adjustment unit is additionally operable to：When the judged result of the judging unit is
When the actual speed is equal with the rotating speed of target, continue repeatedly to open and disconnect institute according to the multiple time interval successively
State drive circuit；And the adjustment unit also includes：Time adjustment unit, when the judged result be the actual speed with
When the rotating speed of target is unequal, according to the difference of the actual speed and the rotating speed of target, between adjusting the multiple time
Every size；And the adjustment unit is additionally operable to：After the size for adjusting the multiple time interval, successively according to regulation
The multiple time interval afterwards is repeatedly opened and disconnects the drive circuit.
Motor speed regulating system according to embodiments of the present invention, if actual speed is equal to rotating speed of target, can be by
Proceed stepless speed regulation according to default multiple time intervals, to ensure the voltage effective value stabilization of motor in currency, so that
Actual speed is further maintained into rotating speed of target.And if actual speed is not equal to rotating speed of target, then can be many by changing
Individual time interval changes the regulation level to the voltage effective value of motor, so that the voltage effective value of motor reaches reality as early as possible
Border rotating speed maintains the level of rotating speed of target.By the technical scheme, can be after actual speed stabilization, 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 stepless
The practicality and Consumer's Experience of speed regulation process.
According to one embodiment of present invention, the time adjustment unit specifically for：When the actual speed is more than institute
When stating rotating speed of target, increase each time interval or any time interval in the multiple time interval, when the reality turns
When speed is less than the rotating speed of target, between reducing described each time interval or any time in the multiple time interval
Every.
Motor speed regulating system according to embodiments of the present invention, when actual speed is more than rotating speed of target, can be by drop
The voltage effective value of low motor reduces the actual speed of motor, every when increasing copped wave accordingly, it would be desirable to copped wave is put more effort
The duration of individual time interval or any time interval.Conversely, when actual speed is less than rotating speed of target, can be by increasing motor
Voltage effective value increases the actual speed of motor, accordingly, it would be desirable to by the reduction of copped wave dynamics, between each time when reducing copped wave
Every or any time interval duration.By the technical scheme, the copped wave time of power device is being dispersed in whole voltage wave
After in shape, rotating speed can also be further adjusted by changing the length of copped wave time, so as to increased the standard of stepless speed regulation
True property, eliminates by vibration and noise caused by voltage and current distortion significantly, improves the quiet degree of air-conditioner operation, changes
The performance of kind product, improves Consumer's Experience.
According to one embodiment of present invention, in half voltage cycle, the size phase of the multiple time interval
Together, or the multiple time interval increases or reduce successively according to predetermined ratio coefficient.
Motor speed regulating system according to embodiments of the present invention, in every half voltage cycle, multiple time intervals
Size can be all identical, it is also possible to increases successively or reduces according to predetermined proportionality coefficient, it is, of course, also possible to according to as needed
The size of other rule settings multiple time interval in addition.
Embodiment according to a third aspect of the present invention proposes a kind of air-conditioner, including such as any one of above-mentioned technical scheme
Described motor speed regulating system, therefore, the air-conditioner has and above-mentioned motor speed regulating system identical technique effect,
Will not be repeated here.
By technical scheme, during stepless speed regulation, the copped wave time of power device can be dispersed in
In whole voltage waveform, such that it is able to eliminate by vibration and noise caused by voltage and current distortion, air-conditioner operation is improve
Quiet degree, improve product performance, improve Consumer's Experience.
Brief description of the drawings
Of the invention above-mentioned and/or additional aspect and advantage will become from description of the accompanying drawings below to embodiment is combined
Substantially and be readily appreciated that, wherein：
Fig. 1 shows the block diagram of motor speed regulating system of the prior art；
Fig. 2 shows the oscillogram of chopping voltage of the prior art and the electric current of its generation；
Fig. 3 A show the flow chart of motor speed adjusting method according to an embodiment of the invention；
Fig. 3 B show the oscillogram of the electric current of the chopping voltage and its generation in the embodiment shown in Fig. 3 A；
Fig. 3 C show the oscillogram of the half period of the chopping voltage in Fig. 3 B；
Fig. 4 shows the flow chart of motor speed adjusting method according to another embodiment of the invention；
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 specific real in order to be more clearly understood that the above objects, features and advantages of the present invention
Mode is applied to be further described in detail the present invention.It should be noted that in the case where not conflicting, the implementation 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 limitation.
Fig. 3 A show the flow chart of motor speed adjusting method according to an embodiment of the invention；
As shown in Figure 3A, motor speed adjusting method according to an embodiment of the invention, including：
Step 302, is that the motor of air-conditioner sets rotating speed of target according to the setting command for receiving.
Step 304, according to rotating speed of target, sets multiple time intervals.
Step 306, detects the supply voltage of air-conditioner.
Step 308, when it is zero to detect supply voltage, in ensuing half voltage cycle, successively according to many
The drive circuit of the power device of air-conditioner is repeatedly opened and disconnected to individual time interval, with by the virtual value of regulating power source voltage
Carry out the actual speed of regulation motor.
Motor speed adjusting method according to embodiments of the present invention, as shown in Figure 3 B, when voltage reaches zero crossing, is connecing
In the once for every half got off, according to default time interval t1、t2、t3、t4、t5、t6, circulate and open and disconnect power device
Drive circuit, when power device disconnects, the value of voltage is zero, i.e., the waveform in the time interval is decapitated, electric current now
Waveform it is also relatively stable, distort it is smaller.The copped wave of multiple short time is carried out by the waveform to once for every half, thus it is possible to vary
The voltage effective value of the motor of air-conditioner, so that the further rotating speed of regulation motor.By the technical scheme, in stepless speed regulation
, the copped wave time of power device, can be dispersed in whole voltage waveform by Cheng Zhong, abnormal by voltage and current such that it is able to eliminate
Vibration and noise caused by becoming, improve the quiet degree of air-conditioner operation, improve the performance of product, improve Consumer's Experience.
According to one embodiment of present invention, after step 308, also include：Detect whether the actual speed of 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 adjusting method according to embodiments of the present invention, according to multiple time intervals of initial setting up to motor
Voltage when carrying out copped wave, when voltage effective value tends towards stability, the actual speed of motor also tends to stabilization, at this point it is possible to right
Actual speed detected, if actual speed now still has gap with rotating speed of target, can proceed stepless speed regulation.It is logical
The technical scheme is crossed, can be after actual speed stabilization, 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, the practicality and Consumer's Experience of stepless speed regulation process are improved.
According to one embodiment of present invention, also include：After judging whether actual speed is equal with rotating speed of target, when
When judged result is actual speed equal with rotating speed of target, continue repeatedly to open and disconnect according to multiple time intervals successively to drive
Circuit；When judged result is actual speed unequal with rotating speed of target, according to actual speed and the difference of rotating speed of target, adjustment
The size of multiple time intervals, and according to the multiple unlatching of multiple time intervals after regulation and disconnect drive circuit successively.
Motor speed adjusting method according to embodiments of the present invention, if actual speed is equal to rotating speed of target, can be by
Proceed stepless speed regulation according to default multiple time intervals, to ensure the voltage effective value stabilization of motor in currency, so that
Actual speed is further maintained into rotating speed of target.And if actual speed is not equal to rotating speed of target, then can be many by changing
Individual time interval changes the regulation level to the voltage effective value of motor, so that the voltage effective value of motor reaches reality as early as possible
Border rotating speed maintains the level of rotating speed of target.By the technical scheme, can be after actual speed stabilization, 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 stepless
The practicality and Consumer's Experience of speed regulation process.
According to one embodiment of present invention, according to actual speed and the difference of rotating speed of target, the multiple time intervals of regulation
Size, specifically include：When actual speed is more than rotating speed of target, increases each time interval in multiple time intervals or appoint
One time interval；When actual speed is less than rotating speed of target, reduce each time interval in multiple time intervals or it is any when
Between be spaced.
Motor speed adjusting method according to embodiments of the present invention, when actual speed is more than rotating speed of target, can be by drop
The voltage effective value of low motor reduces the actual speed of motor, every when increasing copped wave accordingly, it would be desirable to copped wave is put more effort
The duration of individual time interval or any time interval.Conversely, when actual speed is less than rotating speed of target, can be by increasing motor
Voltage effective value increases the actual speed of motor, accordingly, it would be desirable to by the reduction of copped wave dynamics, between each time when reducing copped wave
Every or any time interval duration.By the technical scheme, the copped wave time of power device is being dispersed in whole voltage wave
After in shape, rotating speed can also be further adjusted by changing the length of copped wave time, so as to increased the standard of stepless speed regulation
True property, eliminates by vibration and noise caused by voltage and current distortion significantly, improves the quiet degree of air-conditioner operation, changes
The performance of kind product, improves Consumer's Experience.
According to one embodiment of present invention, in half voltage cycle, the size of multiple time intervals is identical, or multiple
Time interval increases or reduces successively according to predetermined ratio coefficient.
Motor speed adjusting method according to embodiments of the present invention, in every half voltage cycle, multiple time intervals
Size can be all identical, it is also possible to increases successively or reduces according to predetermined proportionality coefficient, it is, of course, also possible to according to as needed
The size of other rule settings multiple time interval in addition.
For example, as shown in Figure 3 C, in half voltage cycle, power device is turned off 6 times, and it is 5 times to open, power device
Single turn-off time and single service time have following characteristics：The single turn-off time is equal, i.e.,：t1=t2=t3=t4=t5=
t6；1st, 2,4,5 service times are equal and equal with the single turn-off time, i.e.,：T1=T2=T4=T5=t1=t2=t3=
t4=t5=t6；3rd service time be：T3=half wave cycles -10*t1。
Again for example, the time that can set each switch-off power device is different, by the time of shut-off, proportionally coefficient k subtracts
It is small, wherein, 0<k<1.In the half wave cycles, for the first time, the turn-off time of last time opens with first time, last time
The logical time is equal, second, the turn-off time of second from the bottom time with second, secondary service time second from the bottom it is equal, the 3rd
Turn-off time of the secondary turn-off time with third from the bottom time is equal, and the service time of third time is open-minded for half wave cycles subtract remaining
With the summation of turn-off time, i.e.,：t1=T1=t6=T5；t2=T2=t5=T4=k*t1；t3=t4=k*k*t1；T3=half-wave week
Phase-(4*t1-4*k*t1-2*k*k*t1)。
Fig. 4 shows the flow chart of motor speed adjusting method according to another embodiment of the invention.
As shown in figure 4, motor speed adjusting method according to another embodiment of the invention, including：
Step 402, sets the rotating speed of target of motor.
Step 404, sets the multiple time intervals for opening and closing power device.I.e. according to rotating speed of target, set multiple
Time interval.
Step 406, judges whether to detect the zero cross signal of 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, according to the drive circuit break-make of the multiple time interval controls power devices for setting.Reached in voltage
During zero point, in ensuing once for every half, the drive circuit of power device is opened and disconnected in circulation, is disconnected in power device
When, 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, distortion compared with
It is small.
Step 410, judges whether the actual speed of motor is stablized, when judged result is to be, into step 412, when sentencing
When disconnected result is no, return to whether the actual speed for continuing to detect motor is stablized.If actual speed now and rotating speed of target
Still there is gap, stepless speed regulation can be proceeded.By the technical scheme, can be after actual speed stabilization, 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 speed regulation process.
Step 412, detects the actual speed of motor.
Step 414, judges whether the actual speed of 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 according to the multiple time interval controls power devices for setting.If actual
Rotating speed is equal to rotating speed of target, then can proceed stepless speed regulation according to default multiple time intervals, to ensure the electricity of motor
Valid value stabilization is pressed with currency, so as to actual speed further 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 many by changing
Individual time interval changes the regulation level to the voltage effective value of motor, so that the voltage effective value of motor reaches reality as early as possible
Border rotating 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, during stepless speed regulation, the copped wave time of power device can be dispersed in entirely
In voltage waveform, such that it is able to eliminate by vibration and noise caused by voltage and current distortion, the peace of air-conditioner operation is improve
Quiet degree, improves the performance of product, improves 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 sets rotating speed of target according to the setting command for receiving, and according to rotating speed of target, when setting multiple
Between be spaced；Voltage detection unit 504, detects the supply voltage of air-conditioner；Adjustment unit 506, be whenever supply voltage is detected
When zero, in ensuing half voltage cycle, the power of air-conditioner is repeatedly opened and disconnects according to multiple time intervals successively
The drive circuit of device, with the virtual value by regulating power source voltage come the actual speed of regulation motor.
Motor speed regulating system 500 according to embodiments of the present invention, when voltage reaches zero crossing, ensuing every
In half period, the drive circuit of power device is opened and disconnected in circulation, and when power device disconnects, the value of voltage is zero, i.e.,
Waveform in the time interval is decapitated.The copped wave of multiple short time is carried out by the waveform to once for every half, thus it is possible to vary
The voltage effective value of the motor of air-conditioner, so that the further rotating speed of regulation motor.By the technical scheme, in stepless speed regulation
, the copped wave time of power device, can be dispersed in whole voltage waveform by Cheng Zhong, abnormal by voltage and current such that it is able to eliminate
Vibration and noise caused by becoming, improve the quiet degree of air-conditioner operation, improve the performance of product, improve Consumer's Experience.
According to one embodiment of present invention, also include：Rotation speed detection unit 508, by controlling the logical of power device
Break and come after the actual speed of regulation motor, detect whether the actual speed of motor stablizes constant；Judging unit 510, when it is determined that
When actual speed stablizes constant, judge whether actual speed is equal with rotating speed of target.
Motor speed regulating system 500 according to embodiments of the present invention, in the multiple time intervals pair according to initial setting up
When the voltage of motor carries out copped wave, when voltage effective value tends towards stability, the actual speed of motor also tends to stabilization, now, can
Detected with to actual speed, if actual speed now still has gap with rotating speed of target, stepless-adjustment can be proceeded
Speed.By the technical scheme, can be after actual speed stabilization, continuation judges whether it is consistent with rotating speed of target, to make reality
Border rotating speed is closest to rotating speed of target, so as to obtain expected operational effect, improves the practicality and use of stepless speed regulation process
Experience at family.
According to one embodiment of present invention, adjustment unit 506 is additionally operable to：When the judged result of judging unit 510 is real
When border rotating speed is equal with rotating speed of target, continue repeatedly to open and disconnect drive circuit according to multiple time intervals successively；And adjust
Section unit 506 also includes：Time adjustment unit 5062, when judged result is actual speed unequal with rotating speed of target, according to
Actual speed and the difference of rotating speed of target, adjust the size of multiple time intervals；And adjustment unit 506 is additionally operable to：In adjustment
After the size of multiple time intervals, drive circuit is repeatedly opened and disconnects according to the multiple time intervals after regulation successively.
Motor speed regulating system 500 according to embodiments of the present invention, if actual speed is equal to rotating speed of target, can be with
Proceed stepless speed regulation according to default multiple time intervals, stablized in currency with the voltage effective value for ensureing motor, from
And actual speed is further maintained into rotating speed of target.And if actual speed is not equal to rotating speed of target, then can be by changing
Multiple time intervals change the regulation level to the voltage effective value of motor so that the voltage effective value of motor reach as early as possible by
Actual speed maintains the level of rotating speed of target.By the technical scheme, can actual speed stabilization after, continuation judge its with
Whether rotating speed of target is consistent, and to make actual speed closest to rotating speed of target, so as to obtain expected operational effect, improves nothing
The practicality and Consumer's Experience of level speed regulation process.
According to one embodiment of present invention, time adjustment unit 5062 specifically for：When actual speed turns more than target
When fast, each time interval or any time interval in the multiple time intervals of increase, when actual speed is less than rotating speed of target,
Reduce each time interval or any time interval in multiple time intervals.
Motor speed regulating system 500 according to embodiments of the present invention, when actual speed is more than rotating speed of target, can pass through
The voltage effective value of motor is reduced to reduce the actual speed of motor, accordingly, it would be desirable to copped wave is put more effort, during increase copped wave
The duration of each time interval or any time interval.Conversely, when actual speed is less than rotating speed of target, can be by increasing motor
Voltage effective value increase the actual speed of motor, accordingly, it would be desirable to by the reduction of copped wave dynamics, reduce each time during copped wave
Interval or the duration of any time interval.By the technical scheme, the copped wave time of power device is being dispersed in whole voltage
After in waveform, rotating speed can also be further adjusted by changing the length of copped wave time, so as to increased stepless speed regulation
Accuracy, eliminates by vibration and noise caused by voltage and current distortion significantly, improves the quiet degree of air-conditioner operation,
Improve the performance of product, improve Consumer's Experience.
According to one embodiment of present invention, in half voltage cycle, the size of multiple time intervals is identical, or multiple
Time interval increases or reduces successively according to predetermined ratio coefficient.
Motor speed regulating system 500 according to embodiments of the present invention, in every half voltage cycle, multiple time intervals
Size can be all identical, it is also possible to increase successively or reduce according to predetermined proportionality coefficient, it is, of course, also possible to according to according to need
In addition the size of other rule settings multiple time interval that will be.
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), for according to the setting command for receiving, being empty
Adjust the motor of device 600 that rotating speed of target is set, and according to rotating speed of target, multiple time intervals are set；And detection air-conditioner 600
Supply voltage, and when it is zero often to detect supply voltage, in ensuing half voltage cycle, successively according to multiple times
Interval repeatedly open and disconnect air-conditioner 600 power device drive circuit, with the virtual value by regulating power source voltage come
The actual speed of regulation motor.
Air-conditioner 600 according to embodiments of the present invention, when voltage reaches zero crossing, in ensuing once for every half
Interior, the drive circuit of power device is opened and disconnected in circulation, and when power device disconnects, the value of voltage is zero, i.e., between the time
It is decapitated every interior waveform, the waveform of electric current now is also relatively stable, is distorted smaller.Entered by the waveform to once for every half
The copped wave of row multiple short time, thus it is possible to vary the voltage effective value of the motor of air-conditioner 600, so that further regulation motor turns
Speed.By the technical scheme, during stepless speed regulation, the copped wave time of power device can be dispersed in whole voltage waveform
In, such that it is able to eliminate by vibration and noise caused by voltage and current distortion, improve the quiet journey of the operation of air-conditioner 600
Degree, improves the performance of product, improves Consumer's Experience.
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, in the multiple time intervals according to initial setting up to the voltage of motor
When carrying out copped wave, when voltage effective value tends towards stability, the actual speed of motor also tends to stabilization, at this point it is possible to turn to actual
Speed detected, if actual speed now still has gap with rotating speed of target, can proceed stepless speed regulation.By the skill
Art scheme, can be after actual speed stabilization, and continuation judges whether it is consistent with rotating speed of target, to make actual speed closest
Rotating speed of target, so as to obtain expected operational effect, improves the practicality and Consumer's Experience of stepless speed regulation process.
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 actual speed equal with rotating speed of target, continue successively according between multiple times
Every repeatedly unlatching and disconnection drive circuit；When judged result is actual speed unequal with rotating speed of target, according to actual speed
With the difference of rotating speed of target, the size of multiple time intervals is adjusted, and it is multiple according to the multiple time intervals after regulation successively
Open and disconnect drive circuit.
Air-conditioner 600 according to embodiments of the present invention, if actual speed is equal to rotating speed of target, can be according to default
Multiple time intervals proceed stepless speed regulation, to ensure the voltage effective value stabilization of motor in currency, so as to further will
Actual speed maintains rotating speed of target.And if actual speed is not equal to rotating speed of target, then can be by between change multiple times
Every the regulation level to the voltage effective value of motor is changed, so that the voltage effective value of motor reaches tie up actual speed as early as possible
Hold the level in rotating speed of target.By the technical scheme, can be after actual speed stabilization, continuation judges that it is with rotating speed of target
It is no to be consistent, to make actual speed closest to rotating speed of target, so as to obtain expected operational effect, improve stepless speed regulation process
Practicality and Consumer's Experience.
According to one embodiment of present invention, motor speed regulating system 602 is used for：When actual speed is more than rotating speed of target
When, each time interval or any time interval in the multiple time intervals of increase；When actual speed is less than rotating speed of target, subtract
Each time interval or any time interval in small multiple time intervals.
Air-conditioner 600 according to embodiments of the present invention, when actual speed is more than rotating speed of target, can be by reducing motor
Voltage effective value reduces the actual speed of motor, accordingly, it would be desirable to copped wave is put more effort, between each when increasing copped wave time
Every or any time interval duration.Conversely, when actual speed is less than rotating speed of target, can be effective by increasing the voltage of motor
Value increases the actual speed of motor, accordingly, it would be desirable to by the reduction of copped wave dynamics, reduce each time interval or any during copped wave
The duration of time interval.By the technical scheme, after the copped wave time of power device is dispersed in whole voltage waveform,
Rotating speed can also be further adjusted by changing the length of copped wave time, so as to increased the accuracy of stepless speed regulation, significantly
Eliminate by vibration and noise caused by voltage and current distortion, improve the quiet degree of the operation of air-conditioner 600, improve product
Performance, improve Consumer's Experience.
According to one embodiment of present invention, in half voltage cycle, the size of multiple time intervals is identical, or multiple
Time interval increases or reduces successively according to predetermined ratio coefficient.
Air-conditioner 600 according to embodiments of the present invention, in every half voltage cycle, the size of multiple time intervals can be with
It is all identical, it is also possible to increase successively or reduce according to predetermined proportionality coefficient, as needed in addition it is, of course, also possible to according to
Other rule settings multiple time intervals size.
Technical scheme is described in detail above in association with accompanying drawing, by technical scheme, in stepless-adjustment
During speed, the copped wave time of power device can be dispersed in whole voltage waveform, such that it is able to eliminate by voltage and electricity
Vibration and noise caused by stream distortion, improve the quiet degree of air-conditioner operation, improve the performance of product, improve user's body
Test.
Embodiments of the invention are the foregoing is only, is not intended to limit the invention, 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 adjusting method, for air-conditioner, it is characterised in that including：
It is that the motor of the air-conditioner sets rotating speed of target according to the setting command for receiving；
According to the rotating speed of target, multiple time intervals are set；
Detect the supply voltage of the air-conditioner；
When it is zero to detect the supply voltage, in ensuing half voltage cycle, successively according to it is the multiple when
Between interval repeatedly open and disconnect the air-conditioner power device drive circuit, with by adjusting having for the supply voltage
Valid value adjusts the actual speed of the motor.
2. motor speed adjusting method according to claim 1, it is characterised in that described by controlling the power device
The break-make of part after the actual speed for adjusting the motor, also includes：
Detect whether the actual speed of 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.
3. motor speed adjusting method according to claim 2, 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 the actual speed equal with the rotating speed of target, continue successively according to the multiple time interval
Repeatedly open and disconnect the drive circuit；
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 multiple time interval, and
Repeatedly opened according to the multiple time interval after regulation successively and disconnect the drive circuit.
4. motor speed adjusting method according to claim 3, it is characterised in that it is described according to the actual speed with
The difference of the rotating speed of target, adjusts the size of the multiple time interval, specifically includes：
When the actual speed is more than the rotating speed of target, increases each time interval in the multiple time interval or appoint
One time interval；
When the actual speed is less than the rotating speed of target, reduce described each time interval in the multiple time interval
Or any time interval.
5. motor speed adjusting method according to any one of claim 1 to 4, it is characterised in that in described half electricity
In the pressure cycle, the size of the multiple time interval is identical, or the multiple time interval increases successively according to predetermined ratio coefficient
Big or reduction.
6. a kind of motor speed regulating system, for air-conditioner, it is characterised in that including：
Setting unit, is that the motor of the air-conditioner sets rotating speed of target according to the setting command for receiving, and according to the mesh
Mark rotating speed, sets multiple time intervals；
Voltage detection unit, detects the supply voltage of the air-conditioner；
Adjustment unit, when it is zero to detect the supply voltage, in ensuing half voltage cycle, successively according to institute
The drive circuit that the power device of the air-conditioner was repeatedly opened and disconnected to multiple time intervals is stated, with by adjusting the power supply
The virtual value of voltage adjusts the actual speed of the motor.
7. motor speed regulating system according to claim 6, it is characterised in that also include：
Rotation speed detection unit, the actual speed that the motor is adjusted by controlling the break-make of the power device it
Afterwards, detect whether the actual speed of the motor stablizes constant；
Judging unit, when it is determined that the actual speed stablizes constant, judge the actual speed whether with the rotating speed of target
It is equal.
8. motor speed regulating system according to claim 7, it is characterised in that the adjustment unit is additionally operable to：
When the judged result of the judging unit is equal with the rotating speed of target for the actual speed, continue successively according to institute
Multiple time intervals are stated repeatedly to open and disconnect the drive circuit；And
The adjustment unit also includes：
Time adjustment unit, when the judged result is the actual speed unequal with the rotating speed of target, according to described
Actual speed and the difference of the rotating speed of target, adjust the size of the multiple time interval；And
The adjustment unit is additionally operable to：
After the size for adjusting the multiple time interval, repeatedly opened according to the multiple time interval after regulation successively
With the disconnection drive circuit.
9. motor speed regulating system according to claim 8, it is characterised in that the time adjustment unit is specifically used
In：
When the actual speed is more than the rotating speed of target, increases each time interval in the multiple time interval or appoint
One time interval, when the actual speed is less than the rotating speed of target, reduce in the multiple time interval it is described each
Time interval or any time interval.
10. the motor speed regulating system according to any one of claim 6 to 9, it is characterised in that in described half electricity
In the pressure cycle, the size of the multiple time interval is identical, or the multiple time interval increases successively according to predetermined ratio coefficient
Big or reduction.
11. a kind of air-conditioners, it is characterised in that the motor including the air-conditioner as any one of claim 6 to 10 turns
Fast regulating system.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410709412.2A CN104534615B (en) | 2014-11-28 | 2014-11-28 | Motor speed adjusting method, motor speed regulating system and air-conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410709412.2A CN104534615B (en) | 2014-11-28 | 2014-11-28 | Motor speed adjusting method, motor speed regulating system and air-conditioner |
Publications (2)
| Publication Number | Publication Date |
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| CN104534615A CN104534615A (en) | 2015-04-22 |
| CN104534615B true CN104534615B (en) | 2017-06-09 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105508278B (en) * | 2015-12-23 | 2017-05-17 | 成都前锋电子电器集团股份有限公司 | Denoising method for alternating-current fan of water heater |
| CN105553367B (en) * | 2016-02-03 | 2018-02-13 | 深圳创维空调科技有限公司 | A kind of PG motor speed regulating methods, governing system and air-conditioning based on air-conditioning |
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|---|---|---|---|---|
| JPS55127899A (en) * | 1979-03-27 | 1980-10-03 | Matsushita Electric Ind Co Ltd | Stepping-motor driving device |
| CN1200847A (en) * | 1995-10-06 | 1998-12-02 | 株式会社日立制作所 | Motor controller |
| CN101056065A (en) * | 2007-03-12 | 2007-10-17 | 安徽工业大学 | Cross frequency conversion device controlled by impulse block chopped wave |
| CN201348340Y (en) * | 2008-11-28 | 2009-11-18 | 珠海格力电器股份有限公司 | Speed regulating device and air conditioner system utilizing same |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| MXPA06009995A (en) * | 2006-04-04 | 2007-10-03 | Smith Corp A O | Electrical machine having a series chopper circuit. |
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2014
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55127899A (en) * | 1979-03-27 | 1980-10-03 | Matsushita Electric Ind Co Ltd | Stepping-motor driving device |
| CN1200847A (en) * | 1995-10-06 | 1998-12-02 | 株式会社日立制作所 | Motor controller |
| CN101056065A (en) * | 2007-03-12 | 2007-10-17 | 安徽工业大学 | Cross frequency conversion device controlled by impulse block chopped wave |
| CN201348340Y (en) * | 2008-11-28 | 2009-11-18 | 珠海格力电器股份有限公司 | Speed regulating device and air conditioner system utilizing same |
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| CN104534615A (en) | 2015-04-22 |
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