CN103867424A - Starting control method and system of direct current frequency conversion air conditioning compressor - Google Patents
Starting control method and system of direct current frequency conversion air conditioning compressor Download PDFInfo
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- CN103867424A CN103867424A CN201210529983.9A CN201210529983A CN103867424A CN 103867424 A CN103867424 A CN 103867424A CN 201210529983 A CN201210529983 A CN 201210529983A CN 103867424 A CN103867424 A CN 103867424A
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Abstract
The invention provides a starting control method and system of a direct current frequency conversion air conditioning compressor. The starting control method and system is applicable to the field of refrigeration equipment control. According to the starting control method and system of the direct current frequency conversion air conditioning compressor, the corresponding working current is output to a motor of the air conditioning compressor within a preset starting time after a direct current frequency conversion air conditioning powers on so as to enable the motor of the air conditioning compressor to be rapidly started to work, the working current is adjusted according to a preset current frequency increment value if the motor speed of the air conditioning compressor is smaller than the target balance speed when the preset starting time arrives so as to enable the motor speed of the air conditioning compressor to reach the target balance speed, and accordingly the motor speed of the air conditioning compressor can be increased to the target balance speed within a short time so as to achieve the rapid starting of the air conditioning compressor and the booting refrigeration or heating speed can be increased.
Description
Technical field
The invention belongs to chiller plant control field, relate in particular to a kind of startup controlling method and system of DC frequency converting air-conditioner compressor.
Background technique
At present, in operation of air conditioning systems, DC frequency converting air-conditioner possesses the low and strong advantage of temperature control performance of energy consumption and is subject to consumers in general's accreditation and employing because of it.And in hot summer or cold winter, the speed speed of realizing room temperature decline after power-on of air conditioner start or rise directly impact freezes or heats comfort level, so the speed of start refrigerating/heating is one of important indicator of weighing air-conditioning products temperature control performance.
In existing DC frequency converting air-conditioner, generally adopt a kind of startup controlling method of DC frequency converting air-conditioner compressor, it is after electrifying startup, first in a special time, the rotor to compressor positions, after having located, just start taking constant rotational speed or from speed as zero beginning dragging motor rotor, but rotor remains on below 300r/min at the rotating speed dragging in process, after speed closed loop control, progressively increase more than rotating speed that motor working current makes rotor rises to 3000r/min with 1Hz/s or less acceleration; The unit of aforesaid rotating speed be r/min (rev/min), 1Hz equals 60r/min, rotational acceleration or retardation unit that Hz/s is rotor.Although prior art can realize the startup control to compressor and make compressor reach default rotating speed, the refrigerating/heating speed that makes to start shooting obtains certain lifting, but the time that rotor rises to more than 3000r/min from 60r/min with the acceleration of 1Hz/s needs about 50 seconds, the spent time is longer, thereby makes the speed of air-conditioning start refrigerating/heating slow.
Summary of the invention
The object of the present invention is to provide a kind of startup controlling method of DC frequency converting air-conditioner compressor, be intended to solve the slow-footed problem of the existing start refrigerating/heating of existing DC frequency converting air-conditioner.
The present invention is achieved in that a kind of startup controlling method of DC frequency converting air-conditioner compressor, and described startup controlling method comprises the following steps:
Within default starting time to air condition compressor output services electric current, and in the time that the motor speed of described air condition compressor is less than target balancing speed, obtains power frequency increment size according to the difference of the motor speed of described air condition compressor and described target balancing speed and reach described target balancing speed with the motor speed that continues to adjust described operating current and make air condition compressor;
The span of described default starting time is [1s, 15s], and the span of described target balancing speed is [2400r/min, 6000r/min].
Another object of the present invention is also to provide a kind of startup control system of DC frequency converting air-conditioner compressor, and described startup control system comprises:
Electric current supply module and adjusting module, be used within default starting time to air condition compressor output services electric current, and in the time that the motor speed of described air condition compressor is less than target balancing speed, obtains power frequency increment size according to the difference of the motor speed of described air condition compressor and described target balancing speed and reach described target balancing speed with the motor speed that continues to adjust described operating current and make air condition compressor.
In the present invention, after powering at DC frequency converting air-conditioner, within default starting time, export corresponding operating current so that the motor of air condition compressor starts work fast to the motor of air condition compressor, if in the time that arrive described default starting time, the motor speed of described air condition compressor is less than target balancing speed, adjust described operating current so that the rotating speed of the motor of air condition compressor reaches target balancing speed according to predetermined current frequency increment value, and then realization is promoted to the motor speed of air condition compressor target balancing speed at short notice to complete the quick startup of air condition compressor, reach the object that promotes start refrigerating/heating speed, thereby solve the slow-footed problem of the existing start refrigerating/heating of existing DC frequency converting air-conditioner.
By technological scheme provided by the present invention, the rotating speed of DC frequency converting air-conditioner compressor can be at 5 seconds to 15 seconds in the time starting, in the even shorter time, reach 3000r/min, and prior art needs the time of 50 seconds to 60 seconds just can make the motor speed of compressor reach 3000r/min, by contrast, in the present invention DC frequency converting air-conditioner compressor start up period can save time of 30 seconds to 50 seconds, thereby realize the refrigerating/heating of starting shooting fast, improve user's travelling comfort.
Brief description of the drawings
Fig. 1 is the realization flow figure of the startup controlling method of the DC frequency converting air-conditioner compressor that provides of the embodiment of the present invention;
Fig. 2 is the current controlled circuit of the related permagnetic synchronous motor of the embodiment of the present invention and the schematic diagram of speed control loop;
Fig. 3 is the related air condition compressor start-up course of the starting of air conditioner controlling method of prior art and operating current waveform schematic diagram;
Fig. 4 is related air condition compressor start-up course and the operating current waveform schematic diagram of startup controlling method that the embodiment of the present invention provides;
Fig. 5 is the change curve of the motor speed of the air condition compressor corresponding with Fig. 3 and Fig. 4.
Fig. 6 is the structural drawing of the startup control system of the DC frequency converting air-conditioner that provides of the embodiment of the present invention.
Embodiment
In order to make object of the present invention, technological scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
In embodiments of the present invention, after powering at DC frequency converting air-conditioner, within default starting time, export corresponding operating current so that the motor of air condition compressor starts work fast to the motor of air condition compressor, if in the time that arrive default starting time, the motor speed of air condition compressor is less than target balancing speed, adjust operating current so that the rotating speed of the motor of air condition compressor reaches target balancing speed according to predetermined current frequency increment value, and then realization is promoted to the motor speed of air condition compressor target balancing speed at short notice to complete the quick startup of air condition compressor, reach the object that promotes start refrigerating/heating speed.
Fig. 1 shows the realization flow of the startup controlling method of the DC frequency converting air-conditioner compressor that the embodiment of the present invention provides, and for convenience of explanation, only shows part related to the present invention, and details are as follows:
In step S1, within default starting time to air condition compressor output services electric current, and in the time that the motor speed of air condition compressor is less than target balancing speed, obtains Balanced Current frequency increment value according to the difference of the motor speed of air condition compressor and target balancing speed and reach target balancing speed with the motor speed that continues to adjust described operating current and make air condition compressor.
Wherein, the span of default starting time is [1s, 15s], and s is unit of time's " second "; Target balancing speed is to drag the rotating speed of target while being switched to speed closed loop from speed open loop in air condition compressor performance during rapid starting period, also be after air condition compressor starts simultaneously, the motor speed that system balancing is required, its span is [2400r/min, 6000r/min]; In the time that the rotating speed of the motor of air condition compressor reaches this target balancing speed, show that air condition compressor has normally started and entered routine work state.
In embodiments of the present invention, step S1 specifically comprises the following steps:
Within default starting time, continue output corresponding operating current to the motor of air condition compressor according to predetermined current frequency values and predetermined current amplitude;
In the time that the motor speed of air condition compressor is less than target balancing speed, obtains Balanced Current frequency increment value according to the difference of the motor speed of air condition compressor and target balancing speed and reach target balancing speed with the motor speed that continues to adjust described operating current and make air condition compressor.
For the above-mentioned step of adjusting described operating current according to predetermined current frequency increment value, it also can be specially:
Obtain Balanced Current frequency increment value according to the difference of the motor speed of air condition compressor and target balancing speed, increase the operating current of the current motor that exports air condition compressor to according to this Balanced Current frequency increment value, and make the motor speed of air condition compressor reach described target balancing speed in the motor that the operating current after increasing exports air condition compressor to.
Wherein, predetermined current frequency values and predetermined current amplitude are for limiting at the operating current of starting of air conditioner initial time the motor of air condition compressor, and the object of determining operating current is exactly that the motor of air condition compressor is rotated according to constant rotational speed.In embodiments of the present invention, the span of predetermined current frequency values is [1Hz, 25Hz]; The span of default starting time is [1s, 8s], and the span of predetermined current amplitude is
i
1for the rated working current value of the motor of air condition compressor, I
2for the minimum demagnetization current of the motor of air condition compressor, I
1and I
2it is just definite in the time that air condition compressor dispatches from the factory, so both are definite value, it is mainly can synchronously be dragged by the electric current of motor stator in the time starting work in order to ensure the rotor of air condition compressor that current amplitude is limited, and ensures that rotor is not because motor stator stream super-high-current demagnetizes.
In other embodiments of the invention, for the motor that makes air condition compressor can reach a good balancing speed fast start up period, to ensure that motor does not damage because rotating speed is too fast, the span of target balancing speed is preferably [3000r/min, 4200r/min].In addition, the span of predetermined current frequency values can be preferably [10Hz, 20Hz], and the span of default starting time also can correspondingly be preferably [2s, 3s], can make like this air condition compressor start fast within the time of 2s-3s and reach above-mentioned target balancing speed, thereby promoting further start refrigerating/heating speed.
In actual application, in above-mentioned steps S1 " in the time that the motor speed of air condition compressor is less than target balancing speed, obtain Balanced Current frequency increment value according to the difference of the motor speed of air condition compressor and target balancing speed and reach target balancing speed with the motor speed that continues to adjust described operating current and make air condition compressor " realization can be undertaken by PI regulating method (being ratio and integral adjustment method), its passing ratio regulating method obtains the ratio of target balancing speed and rotating speed difference, and obtain corresponding Balanced Current frequency increment value and adjust the operating current of air condition compressor according to this ratio, owing to there will be steady-state error in ratio adjustment process, so now need to eliminate this steady-state error to improve the precision of Balanced Current frequency increment value by integral adjustment method, thereby the motor speed to air condition compressor is realized dynamic adjustments, in the time that the difference between motor speed and target balancing speed is larger, Balanced Current frequency increment value can strengthen, otherwise, Balanced Current frequency increment value can reduce.
In step S2, in the time that the motor speed of air condition compressor is more than or equal to target balancing speed, timing also compares motor speed and rotating speed of target in the time arriving the default equilbrium running time.
Wherein, the default equilbrium running time refers to that the normal initial time starting of the motor of air condition compressor is to the time lag that can enter next rotational speed regulation process, and the span of default equilbrium running time is [30s, 50s].
In embodiments of the present invention, above-mentioned Balanced Current frequency increment value refers in the time of the motor speed miss the mark balancing speed of current air condition compressor, the motor working current corresponding to rotational acceleration of the motor to air condition compressor carries out dynamically adjusting needed power frequency adjusted value, taking the permagnetic synchronous motor of 2 pairs of utmost points as example, its operating current frequency equals 2 times of rotor operating frequency.If rotational acceleration is 1Hz/s, corresponding Balanced Current frequency increment value is 2Hz/s.For example, target balancing speed is 3000r/min, the frequency values of the operating current of the motor of the air condition compressor corresponding with this target balancing speed is 100Hz, and the motor speed of current air condition compressor is 1200r/min, the frequency values of the operating current of the motor of current air condition compressor is 40Hz, system can to set Balanced Current frequency increment value be that the rotational acceleration of the motor of the corresponding air condition compressor of 30Hz/s(is 15Hz/s), need just can reach and make the frequency values of operating current reach 100Hz by 2 seconds, the motor speed of air condition compressor reaches 3000r/min.
In step S3, in the time that motor speed is less than rotating speed of target, adjusts described operating current according to user's temperature setting with corresponding power frequency increment size and make the motor speed of air condition compressor reach rotating speed of target.
For the above-mentioned step of adjusting described operating current according to user's temperature setting with corresponding power frequency increment size, it specifically comprises the following steps:
Arrange and calculate corresponding power frequency increment size according to user's temperature;
Increase the operating current of the current motor that exports air condition compressor to according to power frequency increment size, and the operating current of output after increasing is to the motor of air condition compressor.
In embodiments of the present invention, above-mentioned power frequency increment size refers to that the motor speed of air condition compressor is reaching target balancing speed, but while going back miss the mark rotating speed, the motor working current corresponding to rotational acceleration of the motor to air condition compressor carries out dynamically adjusting needed power frequency adjusted value, as increase 2Hz per second.Due in embodiments of the present invention, the span of the rotational acceleration of the motor of air condition compressor is [0.5Hz/s, 2Hz/s], so power frequency increment size also should be corresponding with this rotational acceleration, the time that span of this power frequency increment size should reach rotating speed of target from target balancing speed by the motor speed of the motor working current of the air condition compressor corresponding with rotating speed of target and air condition compressor is determined.
In step S4, in the time that motor speed is more than or equal to rotating speed of target, finish to start control process.
Below in conjunction with instantiation, the startup controlling method of above-mentioned DC frequency converting air-conditioner compressor is described further:
Suppose that the motor in air condition compressor is permagnetic synchronous motor, because the mathematical model of permagnetic synchronous motor on three phase static system of coordinates is the complex system of a multivariable, non-linear and strong coupling, that the variable under this system of coordinates is solved to difficulty is larger, so need to realize the conversion that is tied to rotating coordinate system from static coordinate by vector control technique, just can realize decoupling zero to the excitation component in the stator current of motor and torque component, thereby make permanent magnet synchronous electric function, as direct current generator, independent control is carried out in magnetic flux and torque respectively.Wherein, static coordinate is the alpha-beta system of coordinates that is mutually right angle, and rotational coordinates is the d-q system of coordinates that is mutually right angle.
As shown in Figure 2, the working principle of permagnetic synchronous motor mainly comprises current controlled circuit 10 and speed control loop 20, and both are all vector control techniques based on above-mentioned.Because the rotor in permagnetic synchronous motor is embedded with permanent magnet, under the effect in magnetic field, rotor can be followed the rotating magnetic field rotation that coil of stator of motor produces, in the ideal case, be enough hour of the load of rotor, the rotation meeting of rotor is synchronizeed with the rotating magnetic field that electrode stator coil produces always; But under actual conditions, rotor but always lags behind the rotating magnetic field that coil of stator of motor produces, so the load of rotor is larger, lagging behind also can be more serious, for the rotation that can maintain rotor in motor load process is from small to large synchronizeed with the rotating magnetic field that electrode stator coil produces, can be by adopting above-mentioned current controlled circuit 10 closed loop work and speed control loop 20 operate in open loop states to realize electric motor starting initial stage effectively dragging rotor.
In the time of current controlled circuit 10 closed loop work and speed control loop 20 operate in open loop state, the machine operation in air condition compressor in included the continuing in the step of the corresponding operating current of output to the motor of air condition compressor according to predetermined current frequency values and predetermined current amplitude of the step S1 described in the embodiment of the present invention within default starting time, and motor starts with the operating current that possesses predetermined current frequency values and predetermined current amplitude.
In the time of current controlled circuit 10 and the equal closed loop work of speed control loop 20, the adjustment according to Balanced Current frequency increment value that machine operation in air condition compressor comprises in the step S1 described in the embodiment of the present invention exports the step of the operating current of the motor of air condition compressor to.
Reach after target balancing speed at motor, current controlled circuit 10 and speed control loop 20 continue to keep closed loop work, now motor is started working in the step S2 described in the embodiment of the present invention and step S3, be that motor is in the time reaching target balancing speed, start timing and in the time arriving the equilbrium running time, motor speed and rotating speed of target compared, and in the time that motor speed is less than rotating speed of target, export the operating current of the motor of air condition compressor to corresponding power frequency increment size adjustment according to user's temperature setting, thereby make motor speed reach rotating speed of target.
In above-mentioned current controlled circuit 10 and speed control loop 20, the three phase circuit i in three phase static system of coordinates
u, i
v, i
wbe transformed to the two-phase current i in two-phase rest frame
αand i
βrealize by Clarke transform method; Two-phase voltage V in two-phase rest frame
αand V
βbe transformed to the three-phase voltage V in three phase static system of coordinates
u, V
v, V
wrealize by Clarke inverse transformation method; Two-phase current i in two-phase rest frame
αand i
βbe transformed to the two-phase current i in two-phase rotating coordinate system
dand i
qrealize by Park transform method; Two-phase voltage V in two-phase rotating coordinate system
dand V
qbe transformed to the two-phase current V in two-phase rest frame
αand V
βby realizing by Park transform method.
Fig. 3 and Fig. 4 are respectively air condition compressor start-up course and the operating current waveform schematic diagram of the startup controlling method that provides of the starting of air conditioner controlling method that provides of prior art and the embodiment of the present invention.
The first stage T1 of Fig. 3 is the rotor position fixing process that air condition compressor starts initial time, approximately 2 seconds consuming time; Second stage T2 is the process of current controlled circuit 10 closed loop work and speed control loop 20 operate in open loop states, this process is that the motor of air condition compressor continues to drag 3 seconds to 5 seconds, make motor speed be promoted to the scope interior (1Hz=60r/min herein) of [10Hz, 20HZ]; Phase III T3 is current controlled circuit 10 and the equal closed loop work time of 1 second to 2 seconds of speed control loop 20, and motor speed remains unchanged; Fourth stage T4 is that current controlled circuit 10 and speed control loop 20 continue to keep closed loop work, export the operating current of the motor of air condition compressor according to user's temperature setting to corresponding power frequency increment size adjustment, thereby make motor speed reach rotating speed of target.Due in phase III T3, motor speed remains unchanged, and motor need to experience and reach target balancing speed and two processes of rotating speed of target at fourth stage T4, and meeting consuming time increases greatly.
The first stage T1 of Fig. 4 is the rotor position fixing process that air condition compressor starts initial time, approximately 1 second to 2 seconds consuming time; Second stage T2 is the process of current controlled circuit 10 closed loop work and speed control loop 20 operate in open loop states, this process is that the motor of air condition compressor continues to drag 1 second to 2 seconds, thereby make motor speed be promoted to the scope interior (1Hz=60r/min herein) of [10Hz, 20HZ]; Phase III T3 is current controlled circuit 10 and the equal closed loop work time of 1 second to 2 seconds of speed control loop 20, and motor speed is promoted to 57Hz(1Hz=60r/min herein at this moment); Fourth stage T4 is that current controlled circuit 10 and speed control loop 20 continue to keep closed loop work, export the operating current of the motor of air condition compressor according to user's temperature setting to corresponding power frequency increment size adjustment, thereby make motor speed reach rotating speed of target.Be 3420r/min owing to making motor speed be promoted to 57Hz(in the time of 1 second to 2 seconds in phase III T3, belong to the span of aforesaid target balancing speed), greatly shorten the starting time of air condition compressor, so compare startup controlling method that the prior art of Fig. 3 adopts more rapidly and efficiently.
Fig. 5 shows the change curve of the motor speed of air condition compressor in the startup process of Fig. 3 and Fig. 4, the rotation speed change of motor in the mentioned startup controlling method of curve L1 corresponding diagram 3, the rotation speed change of motor in the mentioned startup controlling method of curve L2 corresponding diagram 4.
For curve L1,0-TB1(2 moment second) time period be above-mentioned first stage T1; TB1-TB2(2 seconds to 3 seconds) time period be above-mentioned second stage T2, motor is promoted at the rotating speed FB1 in TB2 moment in the scope of [10Hz, 20HZ]; The time lag of TB2-TB3(8 second) be above-mentioned phase III T3, it is constant that motor speed maintains FB1 in this stage; The time lag of TB3-TB4(37 second) be above-mentioned fourth stage T4, motor speed is promoted to target balancing speed FB2.
For curve L2,0-TA1(1 moment second) time period be above-mentioned first stage T1; TA1-TA2(2 seconds to 3 seconds) time period be above-mentioned second stage T2, motor is promoted at the rotating speed FA1 in TA2 moment in the scope of [10Hz, 20HZ]; The time lag of TA2-TA3(2 second to 3 second) be above-mentioned phase III T3, it is 57Hz that motor speed is promoted to target balancing speed FA2(); And within the time of the fourth stage T4 of curve L1, the corresponding motor speed of curve L2 maintains target balancing speed FA2 always, therefore, the corresponding startup controlling method of curve L2 has shortened starting time greatly with respect to the startup controlling method of curve L1.
One of ordinary skill in the art will appreciate that all or part of step realizing in above-described embodiment method is to complete with the relevant hardware of instruction by program, described program can be stored in a computer read/write memory medium, described storage medium, as ROM/RAM, disk, CD etc.
Fig. 6 shows the structure of the startup control system of the DC frequency converting air-conditioner that the embodiment of the present invention provides, and for convenience of explanation, only shows part related to the present invention, and details are as follows:
The startup control system of DC frequency converting air-conditioner compressor comprises:
Electric current supply and adjusting module 100, be used within default starting time to air condition compressor output services electric current, and in the time that the motor speed of air condition compressor is less than target balancing speed, obtains Balanced Current frequency increment value according to the difference of the motor speed of air condition compressor and target balancing speed and reach target balancing speed with the motor speed that continues to adjust described operating current and make air condition compressor.
Further, electric current supply and adjusting module 100 specifically comprise:
Electric current supply unit 101, for continuing output corresponding operating current to the motor of air condition compressor according to predetermined current frequency values and predetermined current amplitude within default starting time;
Operating current regulation unit 102, for in the time that the motor speed of air condition compressor is less than target balancing speed, obtains Balanced Current frequency increment value according to the difference of the motor speed of air condition compressor and target balancing speed and reach target balancing speed with the motor speed that continues to adjust described operating current and make air condition compressor.
In actual application, operating current regulation unit 102 can be equivalent to pi regulator, its passing ratio adjusting process obtains the ratio of target balancing speed and rotating speed difference, and obtain corresponding Balanced Current frequency increment value and adjust the operating current of air condition compressor according to this ratio, owing to there will be steady-state error in ratio adjusting process, so now need to eliminate this steady-state error to improve the precision of Balanced Current frequency increment value by integral adjustment process, thereby the motor speed to air condition compressor is realized dynamic adjustments, in the time that the difference between motor speed and target balancing speed is larger, Balanced Current frequency increment value can strengthen, otherwise, Balanced Current frequency increment value can reduce.
Further, starting control system also comprises:
Timing and rotating speed comparison module 200, in the time that the motor speed of air condition compressor is more than or equal to target balancing speed, timing also compares the motor speed of air condition compressor and rotating speed of target in the time arriving the default equilbrium running time;
Further, starting control system also comprises:
Process finishing control module 400, in the time that motor speed is more than or equal to rotating speed of target, finishes to start control process.
Further, operating current regulation unit 102 is specially:
Obtain Balanced Current frequency increment value according to the difference of the motor speed of air condition compressor and target balancing speed, increase the operating current of the current motor that exports air condition compressor to according to this Balanced Current frequency increment value, and make the motor speed of air condition compressor reach described target balancing speed in the motor that the operating current after increasing exports air condition compressor to.
Further, current adjusting module 300 specifically comprises:
Increment size computing unit 301, calculates corresponding power frequency increment size for arranging according to user's temperature;
Operating current regulon 302, for increase the operating current of the current motor that exports air condition compressor to according to described power frequency increment size, and the operating current of output after increasing is to the motor of air condition compressor.
In actual applications, above-mentioned electric current supply and adjusting module 100, timing and rotating speed comparing unit 200, current adjusting module 300 and process finishing control module 400 can be integrated in a controller or control chip.
In embodiments of the present invention, after powering at DC frequency converting air-conditioner, within default starting time, export corresponding operating current so that the motor of air condition compressor starts work fast to the motor of air condition compressor, if in the time that arrive default starting time, the motor speed of air condition compressor is less than target balancing speed, adjust operating current so that the rotating speed of the motor of air condition compressor reaches target balancing speed according to predetermined current frequency increment value, and then realization is promoted to the motor speed of air condition compressor target balancing speed at short notice to complete the quick startup of air condition compressor, reach the object that promotes start refrigerating/heating speed, thereby solve the slow-footed problem of the existing start refrigerating/heating of existing DC frequency converting air-conditioner.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (13)
1. a startup controlling method for DC frequency converting air-conditioner compressor, is characterized in that, described startup controlling method comprises the following steps:
Within default starting time to air condition compressor output services electric current, and in the time that the motor speed of described air condition compressor is less than target balancing speed, obtains Balanced Current frequency increment value according to the difference of the motor speed of described air condition compressor and described target balancing speed and reach described target balancing speed with the motor speed that continues to adjust described operating current and make air condition compressor;
The span of described default starting time is [1s, 15s], and the span of described target balancing speed is [2400r/min, 6000r/min].
2. startup controlling method as claimed in claim 1, it is characterized in that, described within default starting time to air condition compressor output services electric current, and in the time that the motor speed of described air condition compressor is less than target balancing speed, the step of adjusting described operating current according to Balanced Current frequency increment value specifically comprises the following steps:
Within default starting time, continue output corresponding operating current to the motor of air condition compressor according to predetermined current frequency values and predetermined current amplitude;
In the time that the motor speed of described air condition compressor is less than target balancing speed, obtains Balanced Current frequency increment value according to the difference of the motor speed of described air condition compressor and described target balancing speed and reach described target balancing speed with the motor speed that continues to adjust described operating current and make air condition compressor.
3. startup controlling method as claimed in claim 1 or 2, is characterized in that, described startup controlling method is further comprising the steps of:
In the time that the motor speed of described air condition compressor is more than or equal to described target balancing speed, timing also compares described motor speed and rotating speed of target in the time arriving the default equilbrium running time;
In the time that described motor speed is less than described rotating speed of target, adjusts with corresponding power frequency increment size the motor speed that described operating current makes air condition compressor according to user's temperature setting and reach described rotating speed of target.
4. startup controlling method as claimed in claim 2, is characterized in that, the span of described predetermined current frequency values is [1Hz, 25Hz];
The span of described default starting time is [1s, 8s];
The span of described predetermined current amplitude is
i
1for the rated working current value of the motor of air condition compressor, I
2for the minimum demagnetization current of the motor of air condition compressor;
The span of described target balancing speed is [3000r/min, 4200r/min].
5. startup controlling method as claimed in claim 3, is characterized in that, the span of described default equilbrium running time is [30s, 50s].
6. startup controlling method as claimed in claim 4, is characterized in that, the span of described predetermined current frequency values is [10Hz, 20Hz];
The span of described default starting time is [2s, 3s].
7. startup controlling method as claimed in claim 2, is characterized in that, the described step of adjusting described operating current according to predetermined current frequency increment value is specially:
Obtain Balanced Current frequency increment value according to the difference of the motor speed of described air condition compressor and described target balancing speed, increase the operating current of the current motor that exports air condition compressor to according to described Balanced Current frequency increment value, and make the motor speed of air condition compressor reach described target balancing speed in the motor that the operating current after increasing exports air condition compressor to.
8. startup controlling method as claimed in claim 3, is characterized in that, the described step of adjusting described operating current with corresponding power frequency increment size according to user's temperature setting specifically comprises the following steps:
Arrange and calculate corresponding power frequency increment size according to user's temperature;
Increase the operating current of the current motor that exports air condition compressor to according to described power frequency increment size, and the operating current of output after increasing is to the motor of air condition compressor.
9. a startup control system for DC frequency converting air-conditioner compressor, is characterized in that, described startup control system comprises:
Electric current supply module and adjusting module, be used within default starting time to air condition compressor output services electric current, and in the time that the motor speed of described air condition compressor is less than target balancing speed, obtains Balanced Current frequency increment value according to the difference of the motor speed of described air condition compressor and described target balancing speed and reach described target balancing speed with the motor speed that continues to adjust described operating current and make air condition compressor.
10. startup control system as claimed in claim 9, is characterized in that, described electric current supply and adjusting module specifically comprise:
Electric current supply unit, for continuing output corresponding operating current to the motor of air condition compressor according to predetermined current frequency values and predetermined current amplitude within default starting time;
Operating current regulation unit, for in the time that the motor speed of air condition compressor is less than target balancing speed, obtains Balanced Current frequency increment value according to the difference of the motor speed of described air condition compressor and described target balancing speed and reach described target balancing speed with the motor speed that continues to adjust described operating current and make air condition compressor.
11. startup control system as claimed in claim 9, is characterized in that, described startup control system also comprises:
Timing and rotating speed comparison module, in the time that the motor speed of air condition compressor is more than or equal to target balancing speed, timing also compares described motor speed and rotating speed of target in the time arriving the default equilbrium running time;
Current adjusting module, in the time that the motor speed of air condition compressor is less than rotating speed of target, adjusts with corresponding power frequency increment size the motor speed that described operating current makes air condition compressor according to user's temperature setting and reaches described rotating speed of target.
12. startup control system as claimed in claim 10, is characterized in that, described operating current regulation unit is specially:
Obtain Balanced Current frequency increment value according to the difference of the motor speed of described air condition compressor and described target balancing speed, increase the operating current of the current motor that exports air condition compressor to according to described Balanced Current frequency increment value, and make the motor speed of air condition compressor reach described target balancing speed in the motor that the operating current after increasing exports air condition compressor to.
13. startup control system as claimed in claim 11, is characterized in that, described current adjusting module specifically comprises:
Increment size computing unit, calculates corresponding power frequency increment size for arranging according to user's temperature;
Operating current regulon, for increase the operating current of the current motor that exports air condition compressor to according to described power frequency increment size, and the operating current of output after increasing is to the motor of air condition compressor.
Priority Applications (1)
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| CN104653444A (en) * | 2015-01-30 | 2015-05-27 | 海信科龙电器股份有限公司 | Method and device for controlling starting of variable-frequency air conditioner |
| CN105222277A (en) * | 2015-10-09 | 2016-01-06 | Tcl空调器(中山)有限公司 | A kind of frequency-variable air conditioner outdoor machine starts control method and the system of compressor fast |
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| CN116107356A (en) * | 2023-04-10 | 2023-05-12 | 清华大学 | Rotor turning method, rotor turning device, electronic equipment, storage medium and program product |
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