CN106341061B - The centrifugal pump of the single-phase permanent-magnet synchronous motor driving of no sensor electronic control - Google Patents
The centrifugal pump of the single-phase permanent-magnet synchronous motor driving of no sensor electronic control Download PDFInfo
- Publication number
- CN106341061B CN106341061B CN201610822692.7A CN201610822692A CN106341061B CN 106341061 B CN106341061 B CN 106341061B CN 201610822692 A CN201610822692 A CN 201610822692A CN 106341061 B CN106341061 B CN 106341061B
- Authority
- CN
- China
- Prior art keywords
- zero
- winding
- electric current
- period
- power source
- 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.)
- Active
Links
Abstract
The centrifugal pump of the single-phase permanent-magnet synchronous motor driving of no sensor electronic control, within impeller diameter 100mm, the width of air gap is narrowed in each pole lower edge setting circumferencial direction between stator core in motor and p-m rotor；Stator winding is to provide to be access to AC power source around to through switch；Control circuit includes detection circuit and drives the switch by the signal that the circuit detects to control the plug-in of the electric current of AC power source input winding；It includes the end voltage for detecting winding described in the period that the plug-in, which has the period for making the electric current zero and the detection, the zero passage point moment at place with the sine waveform of power supply same frequency is determined by the end voltage, measure the difference of the zero passage point moment Yu mains voltage waveform zero passage point moment, when the difference deviates specified value, the length for changing the period that the electric current is zero reduces the deviation.Preferable optimal running effect control can be implemented in the design.
Description
Technical field
The centrifugal pump of the single-phase permanent-magnet synchronous motor driving controlled the present invention relates to no sensor electronic more particularly to its
The cooperation of turbomachine, electromagnetic structure and control method；In International Patent Classification (IPC), classification belong to F04D25/06 or
F04D27/00。
Background technique
The centrifugal pump for the single-phase permanent-magnet synchronous motor driving that the prior art is controlled without sensor electronic fails to implement preferable
Optimal running effect control.
Summary of the invention
The technical problems to be solved by the present invention are: proposing that a kind of single-phase permanent magnetic synchronous of no sensor electronic control is electronic
The centrifugal pump of machine driving, it is possible to implement preferable optimal running effect control.
The technical solution that the present invention solves technical problem is that the single-phase permanent-magnet synchronous motor of no sensor electronic control drives
Dynamic centrifugal pump, the U-iron core including impeller described in the receded disk impeller and coaxial transmission that rotate according to predetermined direction are single-phase forever
Magnetic-synchro motor, the motor include:
--- p-m rotor, the cylinder to magnetize for radial the two poles of the earth；
--- stator, the stator winding that stator core and the iron core including "U" shaped are passed through；The winding by regulation around
To being access to AC power source；
--- the two arm top of "U" shaped is configured to by toward the left pole shoe on the left of the p-m rotor cylindrical surface and by past
Right pole shoe on the right side of the p-m rotor cylindrical surface, the rotation that the width of air gap is set in each pole lower edge between the pole shoe and rotor
Turn direction to narrow, thus in a free state, the axis of rotor magnetic pole is using the axis of stator as reference, along the direction of rotation of setting
Deflect a sharp angle；
--- there is a switch, AC power source is through the switch to the winding power of motor stator；
--- there is a control circuit, including detection circuit and the signal detected by the circuit the driving switch to control
Make the plug-in that the AC power source inputs the electric current of the winding；
It is characterized by: impeller diameter is within 100mm；The control includes that the AC power source is made to input the winding
Periodic current have be zero and the length adjustable period；The detection includes:
--- the zero crossing of the AC supply voltage waveform；
--- the end voltage of winding described in the period that the electric current is zero；
The plug-in includes following processing:
--- its place and the sine waveform of the AC power source same frequency are determined according to the end voltage of the winding
Zero passage point moment；
--- measure the sine waveform zero passage point moment and the AC supply voltage wave-form crosses zero point moment it
Difference changes the length for the period that the electric current is zero when the difference deviates specified value, reduces the deviation.
Experiment shows the exactly time difference, reflects the working condition of the centrifugal pump of motor and its driving, and with electricity
The torque of motivation has peak feature relationship, thus due to above-mentioned closed-loop control, so that the centrifugal pump is reached optimal running effect.
The specified value is usually obtained by experiment statistics: making the centrifugal pump electronics of specific single-phase permanent-magnet synchronous motor driving
Open loop operation is controlled in specified states (supply voltage and frequency as defined in product standard, lift and flow etc.), described in adjustment
The length for the period that electric current is zero, until up to optimal running effect (such as efficiency and vibration noise) is caused, at this time according to described
The zero passage point moment and the AC supply voltage wave-form crosses zero point moment of sine waveform where the end voltage of winding determines it
Difference be the specified value.The centrifugal pump that it is 30~70mm for impeller diameter that experiment, which shows, the specified value are described in 1/6
AC mains cycle can get optimal running effect.
If there are zero crossings for the end voltage of winding described in the period that the electric current is zero, can directly be controlled with the zero crossing
System, otherwise can the end voltage of winding described in the period for being zero according to the measured electric current its institute is derived with mathematical method
In the zero passage point moment of sine waveform, controlled with the zero crossing.
Used derivation method is: by since one zero crossing of AC power source voltage waveform a certain electric current of timing be zero
2 moment t in period1、t2The instantaneous value u of the end voltage1、u2It constitutes as follows with UmIt is the equation with two unknowns of unknown number with Φ
Group:
u1=Um*sin(2πft1- Φ),
u2=Um*sin(2πft2- Φ)；
In formula, f is supply frequency；
Solving Φ obtained by equation group is the difference.
The measurement has higher accuracy, but the calculating because that need to introduce trigonometric function, and program is larger.For this purpose, can also be by
Measured according to following method: by since one zero crossing of AC power source voltage waveform a certain electric current of timing be 2 in zero period
Moment t1、t2The instantaneous value u of the end voltage1、u2It constitutes as follows using u and t as the two point form linear equation of unknown number:
(u-u1)/(t-t1)=(u2-u1)/(t2-t1)；
Enabling u is zero, solves t obtained by the linear equation and in the t1、t2Before and the hithermost AC supply voltage mistake
The time difference of zero point is the difference.The measurement accuracy is slightly lower, can also meet the needs of Engineering Control, and especially suitable electric current is
Zero period was not more than the case where electrical angle π/4.
It can be the instantaneous of end voltage described in 2 moment in zero period with above-mentioned another electric current to improve measurement accuracy
Value constitutes another two element equations or linear equation, is handled with average value solved result.
In addition, a certain electric current is 2 moment t in zero period1、t22 of the period are conveniently taken to hold
Point.
Detailed description of the invention
Fig. 1 is the basic mechanical structure main view of centrifugal pump of the embodiment of the present invention；
Fig. 2 is centrifugal pump electromotor control circuit schematic diagram of the embodiment of the present invention；
Fig. 3 is signal waveforms when Centrifugal Pump of the embodiment of the present invention is larger；
Fig. 4 is signal waveforms when Centrifugal Pump of the embodiment of the present invention is smaller；
Fig. 5 is centrifugal pump of the embodiment of the present invention for the signal waveforms after Fig. 4 situation adjust automatically；
Fig. 6 is centrifugation pump motor electromagnetism basic structure schematic diagram of the embodiment of the present invention.
Specific embodiment
The basic mechanical structure of centrifugal pump of the embodiment of the present invention is as shown in Figure 1, comprising:
--- (Fig. 1 shows the laminated core 3 and winding 12 of the motor stator to U-iron core single-phase permanent-magnet synchronous motor
And the section of p-m rotor 1) and its receded disk impeller 105 through an actuating mechanism coaxial transmission.Receded disk impeller 105 has
4 blades.The number of blade may be 3,5 or 6, but had better not be more than 8, and according to odd number piece, be more advantageous to reduction vibration
Moving noise.Impeller is injection molding, diameter 60mm.Impeller should not be too large so that rotary inertia it is excessive, to cooperate motor still not
Too big staring torque；But it is also unsuitable too small, to adapt to rotary inertia of the invention with enough.
--- wound impeller plays the pump cover 106 of spiral case；
--- support or/and close the pump housing 107, the bearing 108 of the permasyn morot, impeller 105 and pump cover 106
With the equal attachmentes of sealing ring 109；
--- rotor drum 171 inserts between the stator and rotor of the permasyn morot and plays impermeable role.
The electromagnetism basic structure of above-mentioned U-iron core single-phase permanent-magnet synchronous motor is as shown in Figure 6, comprising:
--- the cylindrical magnet rotor 1 that radial the two poles of the earth are magnetized；
--- stator 2, laminated core 3 and stator winding 12 including illustrating "U" shaped；Stator winding 12 be wound in it is left,
It is integral after right two plastic cord coil 121 by 122 plastic packaging of surface layer plastics；The left arm 31 and right arm 32 of iron core 3 pass through respectively
The left pole that pole-face leans on past 1 cylindrical surface left and right side of rotor is formed at the top exposed after 121 left and right two inner holes of plastic cord coil
Boots 311 and right pole shoe 316；Polar front shape is two sections of arc surfaces coaxial with rotor 1 that indent forms ladder connection: along clockwise
Direction, the before this biggish arc surface of radius, followed by the lesser arc surface of radius；Plane where the upper and lower pole tip of left pole shoe 311
Parallel with the diagram symmetry axis 30 of "U" shaped with plane where the upper and lower pole tip of right pole shoe 316, stator field axis 20 is then
It is vertical with symmetry axis 30.Therefore, it is magnetic resistance that the field axis 10 of p-m rotor 1 is i.e. short to air gap relative to stator field axis 20
Small direction is to deflect an angle beta 0 naturally clockwise, constitutes starting angle.The design can avoid rotor in a free state
So-called " dead point " position for staying in detent torque zero when its axis is overlapped with the axis of stator salient poles and makes to be powered, is formed
Reluctance torque also help prevent operating in rotor do not generate torque when alternating current zero passage and stall.
Said stator structure to illustrate horizontal segment 33 that two vertical arms 31,32 of "U" shaped are pole body and bottom as magnetic yoke,
But also having using the horizontal segment for illustrating "U" shaped bottom is pole body and two vertical arms as the structure of magnetic yoke, the stator winding of the latter
Pole body is wound in only on 1 bobbin.
About the visible China Machine Press of U-iron core single-phase permanent-magnet synchronous motor more detailed information version in 2009
" small-power permanent magnet motor principle, design and application ".
Centrifugal pump of embodiment of the present invention electromotor control circuit is as shown in Fig. 2, mainly by being fixed on motor non-shaft stretching end
Or the printed circuit board composition outside motor, the printed circuit board are equipped with:
--- bidirectional thyristor 4, main electrode is connected with winding 12 to be followed by toward ac power supply terminal 5；
--- single-chip microcontroller 6, output circuit 63 are access to the trigger electrode 41 of bidirectional thyristor 4, if output pulse i.e. triggering is double
It being connected to thyristor 4, AC power source half-wave voltage at this time starts to be applied to input winding 12 until the half-wave zero passage terminates,
The pulse current input winding 12 of (synchronize and lagged) corresponding to the voltage；
--- the shaping circuit being made of resistance 7 and diode 8,9 and 5V DC power supply VDD, input are access to exchange
Power supply terminal 5, output B is 1 in the polarity of voltage positive half-wave of ac power supply terminal 5 and when negative half-wave is 0, and exports B and become by 1
I.e. AC supply voltage zero crossing at the time of becoming 1 for 0 or from 0.Output B is access to the input circuit 61 of single-chip microcontroller 6；
--- winding 12 connects publicly through resistance 13, which is sample resistance of the detection by the electric current of winding 12；Around
The converted circuit 621 of tie point of group 12 and resistance 13 is access to the input circuit 62 of single-chip microcontroller, passes through winding 12 for checking
Voltage drop of the electric current in resistance 13.Resistance 13 can also be by inductance, current transformer or other circuitry insteads, to reduce power damage
Consumption；
--- the main electrode of bidirectional thyristor 4 and the tie point of winding 12 with publicly between bridging resistance 10,19 connect
Bleeder circuit, the converted circuit 681 of series connection point of resistance 10,19 is access to the input circuit 68 of single-chip microcontroller；It is anti-to input
Reflect end voltage when 12 electric current of winding is zero.
Above-mentioned conversion circuit 621,681 may be designed as transformer isolation clamp circuit:
--- 1:1 primary connects tested alternating voltage, and secondary superposition one is higher than tested alternating voltage peak
Constant DC voltage, to make tested alternating voltage be converted to the input circuit that unipolarity fluctuation voltage inputs single-chip microcontroller, in list
The instantaneous value for surveying alternating voltage can be obtained in piece machine through A/D conversion.
Certainly, the chip containing above-mentioned function and single-chip microcontroller also can be selected and replaces single-chip microcontroller 6 and conversion circuit 621,681.
6 plug-in of single-chip microcontroller checks the level of input circuit 61,62 and 68 essentially according to setting procedure, is measured, is compared
Compared with, differentiate, by output circuit 63 export triggering thyristor 4 pulse.
Each signal waveform of motor running of the embodiment of the present invention is as shown in Fig. 3~Fig. 5:
--- 51 be the voltage waveform of ac power supply terminal 5；
--- 52 export the waveform of B for shaping circuit；
--- 531,531 ', 531 " be the waveform for being applied to the voltage of winding 12；
--- 54a, 54a ', 54a " be winding 12 electric current waveform；
--- 54b (when flow is larger), 54b ' (when flow is smaller), 54b " (after the smaller adjust automatically of flow) turn for permanent magnetism
Sub- rotating excitation field generates the waveform of end voltage in winding 12, the phantom line segments therein waveform be flooded by AC supply voltage and
Immeasurable part；Solid line segment is the end that can measure the winding 12 detected when being zero to part, the i.e. electric current of winding 12
Voltage.The voltage waveform 51 of ac power supply terminal 5 is shown in figure simultaneously, be used for and 54b, 54b ', phase compared with 54b ", and wherein
Phantom line segments indicate the electric current of winding 12 when being zero, the thyristor 4 that AC supply voltage is had been turned off blocks, and fails to be applied to
The terminal of winding 12；
--- 551,551 ', 551 " voltage pulses exported for 6 output circuit 63 of single-chip microcontroller to the trigger electrode 41 of thyristor 4
Waveform.
Basic settings in plug-in are as follows: once the level of input circuit 62 reverts to the DC voltage of the clamper,
The electric current for assert input winding 12 is zero, and the level of input circuit 68 is used for determining the end voltage of winding 12.
The step of 2 π periods when the present embodiment ac power frequency is 50Hz are 20ms, and plug-in is implemented makes electronic
Machine works as follows:
--- after the completion of motor start-up, from each zero passage of AC supply voltage light delay about 1/3 π, single-chip microcontroller 6 it is defeated
Circuit 63 respectively exports a voltage pulse to the trigger electrode 41 of thyristor 4 out --- such as in Fig. 3 551 k1, k2, k3 ..., make crystalline substance
Brake tube 4 is connected, and each half-wave voltage of AC power source is made to be applied to winding 12 with the 2/3 π angle of flow --- as 531 v1, v2 in Fig. 3,
V3 ... generates i1, i2, i3 ... in the 54a of electric current such as Fig. 3.The period for being zero in above-mentioned electric current, such as the 54b of Fig. 3, by
(the dotted line of 51 sinusoidal waveform of AC supply voltage i.e. in figure is blocked in the thyristor 4 that AC supply voltage 51 has been ended
Section), detect end voltage e0, e1, e2, e3 ... of winding 12.E0, e1, e2, e3 ... are existed by p-m rotor rotating excitation field
It generates in winding 12, in the period that electric current is not zero, is submerged in the AC supply voltage 51 for being applied to winding 12, i.e., wherein
Phantom line segments.It is fallen in as it can be seen that e0, e1, e2, e3 ... in sinusoidal waveform identical with 51 frequency of AC supply voltage, the sine
Waveform has zero crossing d1, d2 ... in time shaft, and corresponding backward respectively hithermost AC supply voltage 51 is sinusoidal respectively
The zero crossing O of waveform1、O2... the time difference, about 75 ° of electrical angle was (corresponding to the line segment O in Fig. 3 on 54b time shaft1D1 or
O2D2), pump is now in the biggish working condition of flow, and according to the characteristic of centrifugal pump, shaft mechanical torque is also larger.
The time difference can reflect that electric motor operation state is further illustrated with Fig. 4.As in 551 ' in Fig. 4 single-chip microcontroller 6 it is defeated
Circuit 63 is exported to the trigger electrode 41 of thyristor 4 out voltage pulse k1 ', k2 ', 551 k1, k2 in k3 ' ... and Fig. 3,
K3 ... is identical, and thus as in Fig. 4 531 ' be applied to winding 12 voltage v1 ', v2 ', v3 ' ... and Fig. 3 531 in
V1, v2, v3 ... are also identical, generate i1, i2, i3 ... such as 54a in 54a ' electric current i1 ' in Fig. 4, i2 ', i3 ' ... and Fig. 3
Also identical, but since flow is smaller, pump shaft machine torque is also smaller, the end voltage of 54b ' winding 12 in detected such as Fig. 4
E0 ', e1 ', e2 ', the place e3 ' ... sinusoidal waveform accordingly fall behind respectively most respectively in zero crossing d1 ', the d2 ' ... of time shaft
The zero crossing O of close 51 sinusoidal waveform of AC supply voltage1、O2... time difference reduce, about 40 ° of electrical angle (correspond to
Line segment O in Fig. 4 on 54b ' time shaft1D1 ' or O2D2 '), deviate significantly from specified value --- 60 ° of electrical angle.
Also exactly according to the change of the time difference, in order to make motor have optimal working condition, for the load of such as Fig. 4
The case where kicking the beam, the case where according to 40 ° of negative bias of the time difference electrical angle from 60 ° of specified value electrical angle, as Fig. 5 551 " in it is single
K1 ", k2 ", the k3 " ... for the voltage pulse that the output circuit 63 of piece machine 6 is exported to the trigger electrode 41 of thyristor 4 are compared to Fig. 4's
K1 ', k2 ' in 551 ', k3 ' ... increase the period that phase shifting angle, that is, electric current is zero, and thus as 531 " being applied to winding in Fig. 5
12 voltage v1 ", v2 ", v3 " ... reduce the angle of flow, that is, virtual value compared to 531 ' v1 ', v2 ', v3 ' ... in Fig. 4, generate
As the electric current i1 " of 54a ", i2 ", i3 " ... compare the i1 ' of 54a ' in Fig. 4, i2 ', i3 ' ... thus reduction in Fig. 5.The closed loop
Adjust automatically finally, it is detected as in Fig. 5 the end voltage e0 " of the winding 12 of 54b ", e1 ", the place e2 ", e3 " ... it is sinusoidal
Waveform accordingly falls behind respectively hithermost 51 sinusoidal waveform of AC supply voltage in zero crossing d1 ", the d2 " ... of time shaft respectively
Zero crossing O1、O2... time difference (corresponding to the line segment O on 54b " time shaft in Fig. 51D1 " or O2D2 ") it is connect again
60 ° of nearly specified value --- electrical angle.
It is larger down to time difference about 75 ° of positive deviation specified values of electrical angle for pump discharge as described in Figure 3 --- 60 ° of electrical angle
Adjust automatically, be the phase shift of voltage pulse for reducing the output circuit 63 of single-chip microcontroller 6 and being exported to the trigger electrode 41 of thyristor 4
The period that angle, that is, electric current is zero, and thus make to be applied to the voltage of winding 12 and increase the angle of flow i.e. virtual value, the electric current of generation
Thus increase.The closed loop adjust automatically finally, sinusoidal waveform is in the mistake of time shaft where the end voltage of detected winding 12
The time difference that zero point accordingly falls behind the respectively zero crossing of hithermost 51 sinusoidal waveform of AC supply voltage respectively is also able to again
Close to specified value --- 60 ° of electrical angle.Signal waveforms after above-mentioned adjust automatically can be similar to Fig. 5 and make, and have been omitted from.
In Fig. 3, e0, e1, e2, e3 ... fall in sinusoidal waveform identical with 51 frequency of AC supply voltage in time shaft
Zero crossing d1, d2 ... are that (the endpoint c and n of such as e1 is each according to the value of the measured respective endpoint of e0, e1, e2, e3 ...
From numerical value u1、u2With place moment t1、t2), it constitutes as follows with UmIt is the 2.3 yuan functional equation group of unknown number with Φ:
u1=Um*sin(314t1- Φ),
u2=Um*sin(314t2- Φ).
Φ obtained by solution equation group is that described zero crossing d1, d2 ... fall behind zero crossing O respectively1、O2... time difference
Value.
Similarly, in figures 4 and 5, zero crossing d1 ', d2 ' ... and d1 ", d2 " ... fall behind zero crossing O respectively1、
O2... time difference, endpoint c ' and n ' that can also respectively according to each voltage for the winding 12 that measured electric current was zero period
Or the respective numerical value u of c " and n "1、u2With place moment t1、t2It constitutes with UmIt is solved with Φ for the two element equations of unknown number.
Except being constructed as described above with UmIt is outer for the 2.3 yuan functional equation group solution of unknown number with Φ, it can also be with linear interpolation
Method, i.e., with the respective numerical value u of two endpoints1、u2With place moment t1、t2Constitute linear equation:
(u-u1)/(t-t1)=(u2-u1)/(t2-t1)
Moment where seeking the zero crossing solves t obtained by the linear equation even u is zero, by its in the t1、t2It
The time difference of the preceding and hithermost AC supply voltage zero crossing is the difference.Linear interpolation occupies less single-chip microcontroller
Memory can also meet the needs of Engineering Control although precision is slightly lower, and especially suitable electric current was zero period no more than electrical angle π/4
The case where.
It is the respective numerical value u of endpoint c and n using e1 above1、u2With place moment t1、t2Moment where seeking zero crossing
And respectively with respectively near the time difference of the zero crossing of backward 51 sinusoidal waveform of AC supply voltage, also can use in fact
The value of the respective endpoint of e0, e2, e3 ... is sought or even multiple spot seeks the time difference, is then averaged, essence can be improved
Degree, but need more mcu resource.
The present embodiment motor is 2 poles, but its basic control principle is unrelated with number of poles, equally applicable 4,6 pole motors.
Claims (5)
1. the centrifugal pump of the single-phase permanent-magnet synchronous motor driving without sensor electronic control, including what is rotated according to predetermined direction
The U-iron core single-phase permanent-magnet synchronous motor of impeller described in receded disk impeller and coaxial transmission, the motor include:
--- p-m rotor, the cylinder to magnetize for radial the two poles of the earth；
--- stator, the stator winding that stator core and the iron core including "U" shaped are passed through；The winding is by regulation around to connecing
Toward AC power source；
--- the two arm top of "U" shaped is configured to by toward the left pole shoe on the left of the p-m rotor cylindrical surface and by described in
Right pole shoe on the right side of p-m rotor cylindrical surface, the width of air gap is in the rotation side that each pole lower edge is set between the pole shoe and rotor
To narrowing, thus in a free state, the axis of rotor magnetic pole is using the axis of stator as reference, along the deflection of the direction of rotation of setting
One sharp angle；
--- there is a switch, AC power source is through the switch to the winding power of motor stator；
--- there is a control circuit, including detection circuit and the signal detected by the circuit the driving switch to control
State the plug-in that AC power source inputs the electric current of the winding；
It is characterized by: impeller diameter is within 100mm；The control includes the week for making the AC power source input the winding
It is zero and the length adjustable period that phase electric current, which has,；The detection includes:
--- the zero crossing of the AC supply voltage waveform；
--- the end voltage of winding described in the period that the electric current is zero；
The plug-in includes following processing:
--- the zero passage at its place and the sine waveform of the AC power source same frequency is determined according to the end voltage of the winding
Point moment；
--- the zero passage point moment of the sine waveform and the difference of the AC supply voltage wave-form crosses zero point moment are measured,
When the difference deviates specified value, change the length for the period that the electric current is zero, reduces the deviation.
2. according to centrifugal pump described in claim 1, which is characterized in that the difference measures as follows: will be from alternating current
The a certain electric current that voltage waveform one zero crossing in source starts timing is the instantaneous of end voltage described in 2 moment t1, t2 in zero period
Value u1, u2 is constituted as follows using Um and Φ as the two element equations of unknown number:
U1=Umsin (2 π ft1- Φ),
U2=Umsin (2 π ft2- Φ)；
In formula, f is the ac power frequency；Um is the amplitude with the sine waveform of the AC power source same frequency；φ is
With the first phase of the sine waveform of the AC power source same frequency；Solving Φ obtained by equation group is the difference.
3. according to centrifugal pump described in claim 1, which is characterized in that the difference measures as follows: will be from alternating current
The a certain electric current that voltage waveform one zero crossing in source starts timing is the instantaneous of end voltage described in 2 moment t1, t2 in zero period
Value u1, u2 is constituted as follows using u and t as the two point form linear equation of unknown number:
(u-u1)/(t-t1)=(u2-u1)/(t2-t1)；
Enabling u is zero, solve t obtained by the linear equation with before described t1, t2 and the hithermost AC supply voltage zero passage
The time difference of point is the difference.
4. according to centrifugal pump described in claim 2, which is characterized in that a certain electric current is 2 moment t1, t2 in zero period
Take 2 endpoints of the period.
5. according to centrifugal pump described in claim 1 or claim 2 or claim 3, which is characterized in that the impeller diameter is
30~70mm, the specified value are (1/6) T, and T is the AC mains cycle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610822692.7A CN106341061B (en) | 2016-09-13 | 2016-09-13 | The centrifugal pump of the single-phase permanent-magnet synchronous motor driving of no sensor electronic control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610822692.7A CN106341061B (en) | 2016-09-13 | 2016-09-13 | The centrifugal pump of the single-phase permanent-magnet synchronous motor driving of no sensor electronic control |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106341061A CN106341061A (en) | 2017-01-18 |
| CN106341061B true CN106341061B (en) | 2019-08-30 |
Family
ID=57838971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610822692.7A Active CN106341061B (en) | 2016-09-13 | 2016-09-13 | The centrifugal pump of the single-phase permanent-magnet synchronous motor driving of no sensor electronic control |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106341061B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0381789B1 (en) * | 1989-02-07 | 1994-04-20 | Siemens Aktiengesellschaft | Control method and device for single or multiphase AC voltage converters |
| CN105201865A (en) * | 2015-10-20 | 2015-12-30 | 江门市地尔汉宇电器股份有限公司 | Electronically-controlled U-shaped iron core single-phase permanent-magnet synchronous motor-driven centrifugal pump |
| CN105356797A (en) * | 2015-10-20 | 2016-02-24 | 叶露微 | Small-sized electronically-controlled centrifugal pump driven by single-phase self-starting permanent-magnet synchronous motor |
-
2016
- 2016-09-13 CN CN201610822692.7A patent/CN106341061B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0381789B1 (en) * | 1989-02-07 | 1994-04-20 | Siemens Aktiengesellschaft | Control method and device for single or multiphase AC voltage converters |
| CN105201865A (en) * | 2015-10-20 | 2015-12-30 | 江门市地尔汉宇电器股份有限公司 | Electronically-controlled U-shaped iron core single-phase permanent-magnet synchronous motor-driven centrifugal pump |
| CN105356797A (en) * | 2015-10-20 | 2016-02-24 | 叶露微 | Small-sized electronically-controlled centrifugal pump driven by single-phase self-starting permanent-magnet synchronous motor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106341061A (en) | 2017-01-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101262196B (en) | Method for detecting rotor location of no location sensor brushless DC motor | |
| CN102751922B (en) | Miniature permanent magnet synchronous motor | |
| CN103944474B (en) | The method of rapid solving permanent-magnetic synchronous motor rotor initial angle position | |
| CN103078573A (en) | Starting method of brushless DC (Direct Current) motor without Hall sensor | |
| CN102790565B (en) | A kind of Electronic Control directional-rotation single-phase self-starting permanent magnet synchronous motor | |
| CN105156339B (en) | A kind of small-size centrifugal pump of U-iron core single-phase permanent-magnet synchronous motor driving | |
| CN105201864B (en) | The small-size centrifugal pump of U-iron core single-phase permanent-magnet synchronous motor driving | |
| EP2996242B1 (en) | Drive circuit for a permanent magnetic motor | |
| CN105356797B (en) | The small-size centrifugal pump of electronically controlled single-phase self-starting permanent magnet synchronous motor driving | |
| CN105811815A (en) | Pulse feedback output control method of BLDC motor and air conditioning system with application of method | |
| CN105201865B (en) | The centrifugal pump that electronically controlled U-iron core single-phase permanent-magnet synchronous motor drives | |
| CN106341061B (en) | The centrifugal pump of the single-phase permanent-magnet synchronous motor driving of no sensor electronic control | |
| CN105134617B (en) | The small-size centrifugal pump that a kind of permasyn morot drives | |
| CN105186947B (en) | A kind of directional-rotation single-phase self-starting permanent magnet synchronous motor | |
| CN105201885B (en) | A kind of ventilation fan of single-phase self-starting permanent magnet synchronous motor direct drive | |
| CN106374792B (en) | The ventilation blower of the single-phase permanent-magnet synchronous motor driving of no sensor electronic control | |
| CN104979982A (en) | Miniature single-phase permanent-magnet synchronous motor | |
| CN107355390B (en) | A kind of permasyn motor direct connects the small-power centrifugal pump of driving | |
| CN106374786B (en) | A kind of induction less brush-less direct current generator slow-speed of revolution control method | |
| CN105915151B (en) | A kind of circumferential direction axial backmixing cloth phase switch reluctance motor control method | |
| CN105915124B (en) | The centrifugal pump of U-iron core single-phase permanent-magnet synchronous motor driving | |
| CN105156343B (en) | A kind of low-power ventilating fan | |
| CN104467338A (en) | Switch reluctance motor of rotor-free position sensor | |
| CN204271870U (en) | A kind of switched reluctance machines of no-rotor position sensor | |
| CN107061308B (en) | A kind of centrifugal pump and its starting method of the driving of small-sized single-phase permanent magnet synchronous motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 529040 No. 336 Qinglan Road, Jiangmen High-tech Development Zone, Guangdong Province Applicant after: Hanyu Group Co., Ltd. Address before: 529040 No. 336 Qinglan Road, Jiangmen High-tech Development Zone, Guangdong Province Applicant before: Jiangmen Idear-hanyu Electrical Joint-stock Co., Ltd. |
|
| CB02 | Change of applicant information | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |