CN104113242A - Starting method for DC blower of unposition sensor and DC blower controller - Google Patents

Starting method for DC blower of unposition sensor and DC blower controller Download PDF

Info

Publication number
CN104113242A
CN104113242A CN201310241871.8A CN201310241871A CN104113242A CN 104113242 A CN104113242 A CN 104113242A CN 201310241871 A CN201310241871 A CN 201310241871A CN 104113242 A CN104113242 A CN 104113242A
Authority
CN
China
Prior art keywords
fan
phase
time
covert
electric current
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201310241871.8A
Other languages
Chinese (zh)
Other versions
CN104113242B (en
Inventor
张国柱
严光
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GD Midea Air Conditioning Equipment Co Ltd
Original Assignee
Guangdong Midea Refrigeration Equipment Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangdong Midea Refrigeration Equipment Co Ltd filed Critical Guangdong Midea Refrigeration Equipment Co Ltd
Priority to CN201310241871.8A priority Critical patent/CN104113242B/en
Publication of CN104113242A publication Critical patent/CN104113242A/en
Application granted granted Critical
Publication of CN104113242B publication Critical patent/CN104113242B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Control Of Positive-Displacement Air Blowers (AREA)
  • Motor And Converter Starters (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)

Abstract

The invention is suitable for the technical field of household electrical appliances, and provides a starting method for a DC blower of an unposition sensor. The method comprises the steps that after the DC blower starts, first time of phase conversion time T1 of a maximum current phase is recorded, and second time of phase conversion time T2 of the maximum current phase and a first time phase conversion order of the maximum current phase are recorded; a rotation direction of the DC blower is acquired according to the phase conversion order of the maximum current phase; a rotation speed absolute value of the DC blower is calculated; and a starting mode of the DC blower is confirmed according to the rotation direction and the rotation speed absolute value of the DC blower. The technical scheme has advantages that the method does not depend on variable parameters of the DC blower, calculation is accurate and calculation amount is low.

Description

The starting method of the DC fan of position-sensor-free and DC fan controller
Technical field
The invention belongs to field of household appliances, relate in particular to a kind of starting method and DC fan controller of DC fan of position-sensor-free.
Background technology
DC fan (being permanent magnet synchronous direct flow fan), compared with AC blower fan (responding to DC fan), has without passing through induced current excitation, and efficiency is higher, the advantage of good energy saving performance.At present, DC fan use amount constantly increases, the field of household appliances (as: convertible frequency air-conditioner) of having relatively high expectations in Energy Efficiency Ratio and level of noise especially, and DC fan has obtained applying very widely.According to the difference of type of drive, DC fan is divided into again square wave and drives and two kinds of sine wave drive, compared with square wave type of drive, sine wave drive mode has the advantages such as noise is low, current pulsation is little, and the DC fan of sine wave drive becomes the main flow in market just gradually.
Sine wave drive DC fan mainly adopts the method for vector control to control at present, and the method has advantages of that efficiency is high and phase current harmonic wave is less.But owing to adopting said method to carry out coordinate transform according to angle, vector control need to be obtained the rotor-position of DC fan in running.Detect the difference of mode according to rotor-position, the mode of DC fan vector control can be divided into two kinds: one is to utilize the position transducer such as encoder, Hall to detect rotor-position, and selects accordingly the mode of vector control; Another kind is without position transducer, and according to DC fan electric current, voltage estimation rotor-position.Rear a kind of mode is commonly called without transducer control.Due to the advantage on cost, more and more be subject to the attention of domestic and international electronic product producer without the DC fan of transducer control, so the DC fan of position-sensor-free sine wave drive has the advantages such as efficiency is high, noise is low, cost is low, its application is more and more extensive.
At present, major part adopts the position predictor method based on back-emf or magnetic flux without the DC fan of transducer control, these methods all require DC fan to have certain rotating speed, just can provide location estimation accurately, if DC fan rotating speed is zero or close to zero, the back-emf detecting or the signal to noise ratio of magnetic flux will be very low, make position be difficult to accurate estimation.For this reason, the general process that all needs an open-loop start-up without transducer control DC fan, by adding default d-q shaft current DC fan rotor is driven by force and reach certain initial velocity, then cutting speed closed-loop control.And before DC fan open-loop start-up, must carry out rotor localization process, and DC fan three-phase is passed to direct current, rotor is fixed, usually need under environment against the wind or with the wind, start for the DC fan that drives wind wheel.In when location, be subject to the effect of external wind, blower fan has certain initial speed, rotor is usually difficult to fix, if rotor cannot fix, the easy step-out of open-loop start-up process, thus cause starting unsuccessfully.
For addressing the above problem, patent 1(publication number: US7652441B2) propose according to DC fan flux estimator blowing machine initial speed, then according to different rotating speeds, judgement enters different patterns.The method is zero by controlling blower fan phase current, make blower fan input voltage approach its back-emf, and back-emf is carried out to approximate integration and obtain magnetic flux, then try to achieve rotation speed of fan according to flux value, can obtain like this velocity estimation more accurately, can ensure that again phase current magnitude can be not excessive.But the method for estimation of blower fan initial speed for example, has dependence to DC fan variable element (magnetic flux) in this patent, so its calculating is inaccurate, and amount of calculation is larger.
Summary of the invention
The object of the embodiment of the present invention is the starting method of the DC fan that a kind of position-sensor-free is provided, and the calculating that is intended to solve prior art relies on DC fan variable element, calculate inaccurate, the problem that amount of calculation is large.
First aspect provides a kind of starting method of DC fan of position-sensor-free, and described method comprises:
After DC fan starts, record current maximal phase is covert time T 1, record current maximal phase covert time T 2 and electric current maximal phase covert order for the first time for the second time for the first time;
Know turning to of this DC fan according to the covert order of this electric current maximal phase;
Calculate the rotating speed absolute value of DC fan according to formula 1;
M 0 = 3 · P T 2 - T 1 Formula 1
Wherein, M 0for rotating speed absolute value, the number of pole-pairs that P is DC fan, T1 is the electric current maximal phase covert time for the first time, and T2 electric current maximal phase is the covert time for the second time;
According to the start-up mode of determining this DC fan with described rotating speed absolute value that turns to of described DC fan.
The starting method of the DC fan of a kind of position-sensor-free providing in conjunction with first aspect, in the first possibility of first aspect, describedly know that according to the covert order of this electric current maximal phase turning to specifically of this DC fan comprises:
As electric current maximal phase is covert be for the first time sequentially, be phase-changed into V phase from U, determine turning to as forward of DC fan;
As electric current maximal phase for the first time covert order be: be phase-changed into W phase from U, determine turning to as oppositely of DC fan;
As electric current maximal phase is covert be for the first time sequentially, be phase-changed into W phase from V, determine turning to as forward of DC fan;
As electric current maximal phase for the first time covert order be: be phase-changed into U phase from V, determine turning to as oppositely of DC fan;
As electric current maximal phase is covert be for the first time sequentially, be phase-changed into U phase from W, determine turning to as forward of DC fan;
As electric current maximal phase for the first time covert order be: be phase-changed into V phase from W, determine turning to as oppositely of DC fan;
The three-phase of described DC fan is respectively: U phase, V phase and W phase.
In conjunction with the starting method of the DC fan of a kind of position-sensor-free of first aspect or in conjunction with the first possibility of first aspect, in the second possibility of second aspect, describedly determine that according to turning to rotating speed absolute value of this DC fan the start-up mode of this DC fan specifically comprises:
If initial speed ω 0meet ω nl< ω 0< ω pl, DC fan is positioned and open-loop start-up, cut subsequently operation with closed ring;
If initial speed is at ω 0meet ω pl< ω 0< ω pmor ω nm< ω 0< ω nl, keep the second to DC fan dynamic braking Tb, then DC fan is positioned and open-loop start-up, cut subsequently operation with closed ring;
If initial speed ω 0meet ω pm< ω 0< ω phor ω nh< ω 0< ω nm, keep after DC fan dynamic braking Tb second, DC fan is forced to input current braking Tfb second, then DC fan is positioned and open-loop start-up, cut subsequently operation with closed ring.
If initial speed ω 0meet ω 0> ω phor ω 0< ω nh, judge that blower fan initial speed is excessive, without startup;
Wherein, ω pl, ω pmwith ω phbe respectively the threshold value of the basic, normal, high rotating speed of DC fan forward; And ω nl, ω nmwith ω nhbe respectively the threshold value of the reverse basic, normal, high rotating speed of DC fan;
Wherein, ω 0for initial speed.
Second aspect, provides a kind of DC fan controller, and described controller comprises:
Logging modle, after starting when DC fan, record current maximal phase is covert time T 1, record current maximal phase covert time T 2 and electric current maximal phase covert order for the first time for the second time for the first time;
Steering module, for knowing turning to of this DC fan according to the covert order of this electric current maximal phase;
Rotating speed module, for calculating the rotating speed absolute value of DC fan according to formula 1;
M 0 = 3 &CenterDot; P T 2 - T 1 Formula 1
Wherein, M 0for rotating speed absolute value, the number of pole-pairs that P is DC fan, T1 is the electric current maximal phase covert time for the first time, and T2 electric current maximal phase is the covert time for the second time;
Start module, for according to the start-up mode of determining this DC fan with described rotating speed absolute value that turns to of described DC fan.
A kind of DC fan controller providing in conjunction with second aspect, in the first possibility of second aspect, described steering module specifically for:
As electric current maximal phase is covert be for the first time sequentially, be phase-changed into V phase from U, determine turning to as forward of DC fan;
As electric current maximal phase for the first time covert order be: be phase-changed into W phase from U, determine turning to as oppositely of DC fan;
As electric current maximal phase is covert be for the first time sequentially, be phase-changed into W phase from V, determine turning to as forward of DC fan;
As electric current maximal phase for the first time covert order be: be phase-changed into U phase from V, determine turning to as oppositely of DC fan;
As electric current maximal phase is covert be for the first time sequentially, be phase-changed into U phase from W, determine turning to as forward of DC fan;
As electric current maximal phase for the first time covert order be: be phase-changed into V phase from W, determine turning to as oppositely of DC fan;
The three-phase of described DC fan is respectively: U phase, V phase and W phase.
In a kind of DC fan controller providing in conjunction with first aspect or the first possibility of first aspect, in the second possibility of second aspect, described startup module specifically for:
If initial speed ω 0meet ω nl< ω 0< ω pl, DC fan is positioned and open-loop start-up, cut subsequently operation with closed ring;
If initial speed is at ω 0meet ω pl< ω 0< ω pmor ω nm< ω 0< ω nl, keep the second to DC fan dynamic braking Tb, then DC fan is positioned and open-loop start-up, cut subsequently operation with closed ring;
If initial speed ω 0meet ω pm< ω 0< ω phor ω nh< ω 0< ω nm, keep after DC fan dynamic braking Tb second, DC fan is forced to input current braking Tfb second, then DC fan is positioned and open-loop start-up, cut subsequently operation with closed ring.
If initial speed ω 0meet ω 0> ω phor ω 0< ω nh, judge that blower fan initial speed is excessive, without startup;
Wherein, ω pl, ω pmwith ω phbe respectively the threshold value of the basic, normal, high rotating speed of DC fan forward; And ω nl, ω nmwith ω nhbe respectively the threshold value of the reverse basic, normal, high rotating speed of DC fan;
Wherein, ω 0for initial speed.
Compared with prior art, beneficial effect is the embodiment of the present invention: technical scheme of the present invention has and do not rely on DC fan variable element, calculates accurately the advantage that amount of calculation is little.
Brief description of the drawings
Fig. 1 is a kind of position-sensor-free sine wave drive DC fan control system block diagram that the embodiment of the present invention provides;
Fig. 2 is the flow chart of the starting method of the DC fan of a kind of position-sensor-free of providing of the embodiment of the present invention;
Fig. 3 is the current diagram of current three-phase U phase, V phase, W phase;
The interval division schematic diagram that Fig. 4 provides for the specific embodiment of the invention;
Fig. 5 is electric current, rotating speed and the relation curve schematic diagram of time in pressure input current braking procedure provided by the invention;
Fig. 6 initial speed meets ω nh< ω 0< ω nmthe phase current waveform figure that DC fan starts;
Fig. 7 is the starting method specific implementation flow chart of the DC fan of a kind of position-sensor-free provided by the invention;
Fig. 8 is the structure chart of a kind of DC fan controller provided by the invention.
Embodiment
In order to make object of the present invention, technical 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.
The specific embodiment of the invention provides a kind of starting method of DC fan of position-sensor-free, the method is carried out by DC fan control system, the position-sensor-free sine wave drive DC fan control system block diagram of the method as shown in Figure 1, as shown in Figure 1, technical scheme provided by the invention is not changed the hardware of DC fan control system; The method as shown in Figure 2, comprising:
201,, after DC fan starts, record current maximal phase is covert time T 1, record current maximal phase covert time T 2 and electric current maximal phase covert order for the first time for the second time for the first time;
202, know turning to of this DC fan according to the covert order of this electric current maximal phase;
203, calculate the rotating speed absolute value of DC fan according to formula 1;
M 0 = 3 &CenterDot; P T 2 - T 1 Formula 1
Wherein, M 0for rotating speed absolute value, the number of pole-pairs that P is DC fan, T1 is the electric current maximal phase covert time for the first time, and T2 electric current maximal phase is the covert time for the second time;
204, according to the start-up mode of determining this DC fan with rotating speed absolute value that turns to of this DC fan.
What method provided by the invention relied on while calculating rotating speed is the number of pole-pairs of motor, and number of pole-pairs belongs to intrinsic parameter for direct current machine, when so it calculates without relying on the variable element of motor, so having, it calculates advantage accurately, in addition, the mode of above-mentioned calculating is simple, has the simple advantage of calculating.
Optionally, above-mentioned 202 methods that realize are specifically as follows:
As electric current maximal phase is covert be for the first time sequentially, be phase-changed into V phase from U, determine turning to as forward of DC fan;
As electric current maximal phase for the first time covert order be: be phase-changed into W phase from U, determine turning to as oppositely of DC fan;
As electric current maximal phase is covert be for the first time sequentially, be phase-changed into W phase from V, determine turning to as forward of DC fan;
As electric current maximal phase for the first time covert order be: be phase-changed into U phase from V, determine turning to as oppositely of DC fan;
As electric current maximal phase is covert be for the first time sequentially, be phase-changed into U phase from W, determine turning to as forward of DC fan;
As electric current maximal phase for the first time covert order be: be phase-changed into V phase from W, determine turning to as oppositely of DC fan.
Wherein the current diagram of U phase, V phase, W phase as shown in Figure 3, it should be noted that, the solid line in Fig. 3 is U phase current, and dotted line is V phase current, and chain-dotted line is W phase current, and U phase, V phase, W differ hexagonal angle mutually between any two.
Illustrate that below in conjunction with Fig. 3 which kind of situation is that electric current maximal phase is covert.
When blower fan starts to start, first initialization, for electric current maximal phase timer T1 and the electric current maximal phase timer T2 of transition count for the second time of transition count for the first time, makes T1=T2=0s, then, make DC fan enter dynamic braking state, the three-phase voltage of DC fan is zero; Subsequently, DC fan will generate electricity due to initial speed, and produce at UVW three-phase the alternating current that phase place mutual deviation 120 is spent, along with passage of time, the electric current maximal phase in UVW three-phase sequentially substitutes, record moment T1(that electric current maximal phase converts for the first time as shown in Figure 3, between T1, maximum current is V phase mutually, after T1, maximum current is U phase mutually, and variation now is just called electric current maximal phase conversion) the moment T2 that converts for the second time with electric current maximal phase.Can judge the direction (concrete determination methods can referring to above-mentioned 202 description) of DC fan initial speed according to the order change for the first time of electric current maximal phase; Can calculate blower fan initial speed ω 0 according to turning to of the value of T1, T2 and DC fan.For different DC fan initial speed ω 0, different pattern (concrete mode of entrance can referring to following 204 description) will be entered.
Optionally, realizing 204 method is specifically as follows:
If initial speed ω 0within interval 0, i.e. ω nl< ω 0< ω pl, DC fan is positioned and open-loop start-up, cut subsequently operation with closed ring;
If initial speed is at ω 0within interval 1, i.e. ω pl< ω 0< ω pmor ω nm< ω 0< ω nl, keep the second to DC fan dynamic braking Tb, then DC fan is positioned and open-loop start-up, cut subsequently operation with closed ring.
If initial speed ω 0within interval 2, i.e. ω pm< ω 0< ω phor ω nh< ω 0< ω nm, keep after DC fan dynamic braking Tb second, DC fan is forced to input current braking Tfb second, then DC fan is positioned and open-loop start-up, cut subsequently operation with closed ring.
If initial speed ω 0within interval 3, i.e. ω 0> ω phor ω 0< ω nh, judge that blower fan initial speed is excessive, without startup.Then, stop PWM output, wait for after Tw second, return to beginning.
Wherein, ω pl, ω pmwith ω phbe respectively the threshold value of the basic, normal, high rotating speed of DC fan forward; And ω nl, ω nmwith ω nhbe respectively the threshold value of the reverse basic, normal, high rotating speed of DC fan.
Wherein, ω 0for initial speed.The division in above-mentioned interval can be shown in Figure 4.
As shown in Figure 5, Fig. 5 has provided and has forced electric current, rotating speed and the relation curve of time in input current braking procedure.As seen from the figure, force input current braking procedure can be divided into 4 stages, blower fan carry out initial speed estimate with dynamic braking Tb second after, enter the state 0 of forcing input current braking.In state 0, first making current phasor rotating speed is zero, and makes Id be incremented to gradually set point Id*, and then to be increased progressively gradually by ω 0 be that 0, Iq remains zero to current phasor rotating speed.State 1 is realized the location of blower fan.In state 1, current phasor rotating speed is that 0, Id remains Id*, and Iq remains zero.State 2 is realized the open-loop start-up of blower fan.In state 2, current phasor rotating speed is incremented to ω op by 0, and Id remains Id*, and Iq remains zero.In state 3, blower fan incision operation with closed ring.
Fig. 6 is that initial speed meets ω nh< ω 0< ω nmthe phase current waveform that DC fan starts.This waveform is corresponding with electric current, rotating speed and the relation curve of time in the pressure input current braking procedure shown in Fig. 5.
The starting method particular flow sheet of the DC fan of a kind of position-sensor-free that Fig. 7 provides for the specific embodiment of the invention.
The specific embodiment of the invention provides a kind of DC fan controller 800, and this controller 800 as shown in Figure 8, comprising:
Logging modle 801, after starting when DC fan, record current maximal phase is covert time T 1, record current maximal phase covert time T 2 and electric current maximal phase covert order for the first time for the second time for the first time;
Steering module 802, for knowing turning to of this DC fan according to the covert order of this electric current maximal phase;
Rotating speed module 803, for calculating the rotating speed absolute value of DC fan according to formula 1;
M 0 = 3 &CenterDot; P T 2 - T 1 Formula 1
Wherein, M 0for rotating speed absolute value, the number of pole-pairs that P is DC fan, T1 is the electric current maximal phase covert time for the first time, and T2 electric current maximal phase is the covert time for the second time;
Start module 804, for according to the start-up mode of determining this DC fan with described rotating speed absolute value that turns to of described DC fan.
Optionally, steering module 802 specifically for:
As electric current maximal phase is covert be for the first time sequentially, be phase-changed into V phase from U, determine turning to as forward of DC fan;
As electric current maximal phase for the first time covert order be: be phase-changed into W phase from U, determine turning to as oppositely of DC fan;
As electric current maximal phase is covert be for the first time sequentially, be phase-changed into W phase from V, determine turning to as forward of DC fan;
As electric current maximal phase for the first time covert order be: be phase-changed into U phase from V, determine turning to as oppositely of DC fan;
As electric current maximal phase is covert be for the first time sequentially, be phase-changed into U phase from W, determine turning to as forward of DC fan;
As electric current maximal phase for the first time covert order be: be phase-changed into V phase from W, determine turning to as oppositely of DC fan;
The three-phase of described DC fan is respectively: U phase, V phase and W phase.
Optionally, start module 804 specifically for:
If initial speed ω 0meet ω nl< ω 0< ω pl, DC fan is positioned and open-loop start-up, cut subsequently operation with closed ring;
If initial speed is at ω 0meet ω pl< ω 0< ω pmor ω nm< ω 0< ω nl, keep the second to DC fan dynamic braking Tb, then DC fan is positioned and open-loop start-up, cut subsequently operation with closed ring;
If initial speed ω 0meet ω pm< ω 0< ω phor ω nh< ω 0< ω nm, keep after DC fan dynamic braking Tb second, DC fan is forced to input current braking Tfb second, then DC fan is positioned and open-loop start-up, cut subsequently operation with closed ring.
If initial speed ω 0meet ω 0> ω phor ω 0< ω nh, judge that blower fan initial speed is excessive, without startup;
Wherein, ω pl, ω pmwith ω phbe respectively the threshold value of the basic, normal, high rotating speed of DC fan forward; And ω nl, ω nmwith ω nhbe respectively the threshold value of the reverse basic, normal, high rotating speed of DC fan;
Wherein, ω 0for initial speed.
What DC fan controller provided by the invention relied in the time calculating rotating speed is the number of pole-pairs of motor, and number of pole-pairs belongs to intrinsic parameter for direct current machine, when so it calculates without relying on the variable element of motor, so having, it calculates advantage accurately, in addition, the mode of above-mentioned calculating is simple, has the simple advantage of calculating.
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 (6)

1. a starting method for the DC fan of position-sensor-free, is characterized in that, described method comprises:
After DC fan starts, record current maximal phase is covert time T 1, record current maximal phase covert time T 2 and electric current maximal phase covert order for the first time for the second time for the first time;
Know turning to of this DC fan according to the covert order of this electric current maximal phase;
Calculate the rotating speed absolute value of DC fan according to formula 1;
M 0 = 3 &CenterDot; P T 2 - T 1 Formula 1
Wherein, M 0for rotating speed absolute value, the number of pole-pairs that P is DC fan, T1 is the electric current maximal phase covert time for the first time, and T2 electric current maximal phase is the covert time for the second time;
According to the start-up mode of determining this DC fan with described rotating speed absolute value that turns to of described DC fan.
2. method according to claim 1, is characterized in that, describedly knows that according to the covert order of this electric current maximal phase turning to specifically of this DC fan comprises:
As electric current maximal phase is covert be for the first time sequentially, be phase-changed into V phase from U, determine turning to as forward of DC fan;
As electric current maximal phase for the first time covert order be: be phase-changed into W phase from U, determine turning to as oppositely of DC fan;
As electric current maximal phase is covert be for the first time sequentially, be phase-changed into W phase from V, determine turning to as forward of DC fan;
As electric current maximal phase for the first time covert order be: be phase-changed into U phase from V, determine turning to as oppositely of DC fan;
As electric current maximal phase is covert be for the first time sequentially, be phase-changed into U phase from W, determine turning to as forward of DC fan;
As electric current maximal phase for the first time covert order be: be phase-changed into V phase from W, determine turning to as oppositely of DC fan;
The three-phase of described DC fan is respectively: U phase, V phase and W phase.
3. method according to claim 1 and 2, is characterized in that, describedly determines that according to turning to rotating speed absolute value of this DC fan the start-up mode of this DC fan specifically comprises:
If initial speed ω 0meet ω nl< ω 0< ω pl, DC fan is positioned and open-loop start-up, cut subsequently operation with closed ring;
If initial speed is at ω 0meet ω pl< ω 0< ω pmor ω nm< ω 0< ω nl, keep the second to DC fan dynamic braking Tb, then DC fan is positioned and open-loop start-up, cut subsequently operation with closed ring;
If initial speed ω 0meet ω pm< ω 0< ω phor ω nh< ω 0< ω nm, keep after DC fan dynamic braking Tb second, DC fan is forced to input current braking Tfb second, then DC fan is positioned and open-loop start-up, cut subsequently operation with closed ring.
If initial speed ω 0meet ω 0> ω phor ω 0< ω nh, judge that blower fan initial speed is excessive, without startup;
Wherein, ω pl, ω pmwith ω phbe respectively the threshold value of the basic, normal, high rotating speed of DC fan forward; And ω nl, ω nmwith ω nhbe respectively the threshold value of the reverse basic, normal, high rotating speed of DC fan;
Wherein, ω 0for initial speed.
4. a DC fan controller, is characterized in that, described controller comprises:
Logging modle, after starting when DC fan, record current maximal phase is covert time T 1, record current maximal phase covert time T 2 and electric current maximal phase covert order for the first time for the second time for the first time;
Steering module, for knowing turning to of this DC fan according to the covert order of this electric current maximal phase;
Rotating speed module, for calculating the rotating speed absolute value of DC fan according to formula 1;
M 0 = 3 &CenterDot; P T 2 - T 1 Formula 1
Wherein, M 0for rotating speed absolute value, the number of pole-pairs that P is DC fan, T1 is the electric current maximal phase covert time for the first time, and T2 electric current maximal phase is the covert time for the second time;
Start module, for according to the start-up mode of determining this DC fan with described rotating speed absolute value that turns to of described DC fan.
5. controller according to claim 4, is characterized in that, described steering module specifically for:
As electric current maximal phase is covert be for the first time sequentially, be phase-changed into V phase from U, determine turning to as forward of DC fan;
As electric current maximal phase for the first time covert order be: be phase-changed into W phase from U, determine turning to as oppositely of DC fan;
As electric current maximal phase is covert be for the first time sequentially, be phase-changed into W phase from V, determine turning to as forward of DC fan;
As electric current maximal phase for the first time covert order be: be phase-changed into U phase from V, determine turning to as oppositely of DC fan;
As electric current maximal phase is covert be for the first time sequentially, be phase-changed into U phase from W, determine turning to as forward of DC fan;
As electric current maximal phase for the first time covert order be: be phase-changed into V phase from W, determine turning to as oppositely of DC fan;
The three-phase of described DC fan is respectively: U phase, V phase and W phase.
6. controller according to claim 1 and 2, is characterized in that, described startup module is specifically used
If initial speed ω 0meet ω nl< ω 0< ω pl, DC fan is positioned and open-loop start-up, cut subsequently operation with closed ring;
If initial speed is at ω 0meet ω pl< ω 0< ω pmor ω nm< ω 0< ω nl, keep the second to DC fan dynamic braking Tb, then DC fan is positioned and open-loop start-up, cut subsequently operation with closed ring;
If initial speed ω 0meet ω pm< ω 0< ω phor ω nh< ω 0< ω nm, keep after DC fan dynamic braking Tb second, DC fan is forced to input current braking Tfb second, then DC fan is positioned and open-loop start-up, cut subsequently operation with closed ring.
If initial speed ω 0meet ω 0> ω phor ω 0< ω nh, judge that blower fan initial speed is excessive, without startup;
Wherein, ω pl, ω pmwith ω phbe respectively the threshold value of the basic, normal, high rotating speed of DC fan forward; And ω nl, ω nmwith ω nhbe respectively the threshold value of the reverse basic, normal, high rotating speed of DC fan;
Wherein, ω 0for initial speed.
CN201310241871.8A 2013-06-18 2013-06-18 The startup method of the DC fan of position-sensor-free and DC fan controller Active CN104113242B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310241871.8A CN104113242B (en) 2013-06-18 2013-06-18 The startup method of the DC fan of position-sensor-free and DC fan controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310241871.8A CN104113242B (en) 2013-06-18 2013-06-18 The startup method of the DC fan of position-sensor-free and DC fan controller

Publications (2)

Publication Number Publication Date
CN104113242A true CN104113242A (en) 2014-10-22
CN104113242B CN104113242B (en) 2016-12-28

Family

ID=51709905

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310241871.8A Active CN104113242B (en) 2013-06-18 2013-06-18 The startup method of the DC fan of position-sensor-free and DC fan controller

Country Status (1)

Country Link
CN (1) CN104113242B (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104481907A (en) * 2014-12-05 2015-04-01 广东美的制冷设备有限公司 Starting and controlling method and device for direct-current fan
CN104779852A (en) * 2015-03-23 2015-07-15 四川长虹电器股份有限公司 Motor start control method
CN104779874A (en) * 2015-03-19 2015-07-15 四川长虹电器股份有限公司 Direct drag control method for outdoor fan of air conditioner
CN105262385A (en) * 2015-11-13 2016-01-20 四川长虹电器股份有限公司 Preheating control method for motor winding
CN105429527A (en) * 2015-12-16 2016-03-23 四川长虹电器股份有限公司 Method and apparatus for controlling motor
CN105529967A (en) * 2016-01-21 2016-04-27 珠海格力节能环保制冷技术研究中心有限公司 Fan start state detection and start control method
CN109098998A (en) * 2018-07-20 2018-12-28 上海肖可雷电子科技有限公司 The starting control method of external hanging type no brush and no position sensing DC fan
CN109185191A (en) * 2018-09-25 2019-01-11 广东美的制冷设备有限公司 The starting control method and device of DC fan, outdoor unit, air conditioner
CN109245654A (en) * 2018-09-25 2019-01-18 广东美的制冷设备有限公司 The starting control method and device of DC fan, outdoor unit, air conditioner
CN109323393A (en) * 2018-09-25 2019-02-12 广东美的制冷设备有限公司 The starting control method and device of DC fan, outdoor unit, air conditioner
CN109372787A (en) * 2018-09-25 2019-02-22 广东美的制冷设备有限公司 The starting control method and device of DC fan, outdoor unit, air conditioner
CN110768585A (en) * 2018-07-25 2020-02-07 深圳瑞德创新科技有限公司 Method for upwind starting of permanent magnet brushless direct current motor
CN112332719A (en) * 2019-07-30 2021-02-05 南京德朔实业有限公司 Control method and system of electric tool and electric tool

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1050432A (en) * 1989-09-18 1991-04-03 托林顿公司 High resolution encoder
EP0773623A1 (en) * 1995-04-28 1997-05-14 Fanuc Ltd Method and device for protecting regenerative resistor of servo motor for driving inverter
CN101938238A (en) * 2010-08-12 2011-01-05 天津航天鑫茂稀土机电科技有限公司 A kind of rare earth permanent magnetic brushless dc motor expansion speed angle computation method
CN102025305A (en) * 2010-12-07 2011-04-20 南京邮电大学 Hall phase sequence detecting method and device of brushless direct-current motor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1050432A (en) * 1989-09-18 1991-04-03 托林顿公司 High resolution encoder
EP0773623A1 (en) * 1995-04-28 1997-05-14 Fanuc Ltd Method and device for protecting regenerative resistor of servo motor for driving inverter
CN101938238A (en) * 2010-08-12 2011-01-05 天津航天鑫茂稀土机电科技有限公司 A kind of rare earth permanent magnetic brushless dc motor expansion speed angle computation method
CN102025305A (en) * 2010-12-07 2011-04-20 南京邮电大学 Hall phase sequence detecting method and device of brushless direct-current motor

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104481907A (en) * 2014-12-05 2015-04-01 广东美的制冷设备有限公司 Starting and controlling method and device for direct-current fan
CN104481907B (en) * 2014-12-05 2017-02-08 广东美的制冷设备有限公司 Starting and controlling method and device for direct-current fan
CN104779874B (en) * 2015-03-19 2017-10-27 四川长虹电器股份有限公司 Outdoor fan of air-conditioner directly drags control method
CN104779874A (en) * 2015-03-19 2015-07-15 四川长虹电器股份有限公司 Direct drag control method for outdoor fan of air conditioner
CN104779852A (en) * 2015-03-23 2015-07-15 四川长虹电器股份有限公司 Motor start control method
CN105262385A (en) * 2015-11-13 2016-01-20 四川长虹电器股份有限公司 Preheating control method for motor winding
CN105429527A (en) * 2015-12-16 2016-03-23 四川长虹电器股份有限公司 Method and apparatus for controlling motor
CN105529967B (en) * 2016-01-21 2018-11-27 珠海格力电器股份有限公司 Fan starting state detection and starting control method
CN105529967A (en) * 2016-01-21 2016-04-27 珠海格力节能环保制冷技术研究中心有限公司 Fan start state detection and start control method
CN109098998A (en) * 2018-07-20 2018-12-28 上海肖可雷电子科技有限公司 The starting control method of external hanging type no brush and no position sensing DC fan
CN110768585A (en) * 2018-07-25 2020-02-07 深圳瑞德创新科技有限公司 Method for upwind starting of permanent magnet brushless direct current motor
CN109185191A (en) * 2018-09-25 2019-01-11 广东美的制冷设备有限公司 The starting control method and device of DC fan, outdoor unit, air conditioner
CN109245654A (en) * 2018-09-25 2019-01-18 广东美的制冷设备有限公司 The starting control method and device of DC fan, outdoor unit, air conditioner
CN109323393A (en) * 2018-09-25 2019-02-12 广东美的制冷设备有限公司 The starting control method and device of DC fan, outdoor unit, air conditioner
CN109372787A (en) * 2018-09-25 2019-02-22 广东美的制冷设备有限公司 The starting control method and device of DC fan, outdoor unit, air conditioner
CN109372787B (en) * 2018-09-25 2020-06-26 广东美的制冷设备有限公司 Starting control method and device of direct current fan, outdoor unit and air conditioner
CN109185191B (en) * 2018-09-25 2023-12-01 广东美的制冷设备有限公司 Start control method and device of direct current fan, outdoor unit and air conditioner
CN112332719A (en) * 2019-07-30 2021-02-05 南京德朔实业有限公司 Control method and system of electric tool and electric tool
CN112332719B (en) * 2019-07-30 2023-05-23 南京泉峰科技有限公司 Control method and system of electric tool and electric tool

Also Published As

Publication number Publication date
CN104113242B (en) 2016-12-28

Similar Documents

Publication Publication Date Title
CN104113242A (en) Starting method for DC blower of unposition sensor and DC blower controller
CN102694498B (en) Device and method for resisting rotor disturbance of permanent-magnet synchronous motor in zero-speed or extremely-low-speed state
Lee et al. A seamless transition control of sensorless PMSM compressor drives for improving efficiency based on a dual-mode operation
CN106602941B (en) A kind of control device and method reducing brshless DC motor commutation torque ripple
US7557530B2 (en) Method, apparatus and article for detecting rotor position
TWI418135B (en) Motor control method and system and digital signal processor thereof
CN103532465A (en) Permanent magnet synchronous motor inductance identification algorithm based on incremental model reference adaptive system
CN104779845B (en) Permanent-magnet brushless DC electric machine position and Rotating speed measring method
CN104767457B (en) The method of parameter adaptive in DC frequency-changeable compressor operational process
CN109379007B (en) Method for controlling tape speed re-throwing of permanent magnet synchronous motor without position sensor
CN109450305B (en) Ceiling fan motor control method and device based on non-inductive FOC and ceiling fan
CN103475296B (en) Permanent-magnet synchronous DC brushless motor low frequency control method
CN101931353A (en) Control method for brushless direct current motor for automotive air conditioning fan
CN102457225A (en) Refrigerating apparatus and controller for permanent magnet synchronous motor
CN103997262B (en) Based on the electric bicycle sine wave control method without sensor wheel hub motor
CN103427730A (en) Permanent magnet brushless direct current motor torque ripple suppression system and method
CN103953546A (en) Control device of compressor and compressor control system with control device
CN107994818B (en) Method for real-time closed-loop adjustment control of single-phase brushless direct current motor by internal power factor angle
TWI426697B (en) Motor control method without sensor
Kano et al. Sensorless control of interior permanent magnet synchronous motor: An overview and design study
CN104779874A (en) Direct drag control method for outdoor fan of air conditioner
CN103997268A (en) Position-sensor-free control method for transformer substation patrol robot
TWI426698B (en) Intelligent control model for adaptive control of sensors without sensor control method
JP4542797B2 (en) Control device for synchronous machine
CN206506459U (en) A kind of permanent magnet synchronous motor control device and system

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant