CN107222134A - The brshless DC motor commutation torque ripple minimization method of noninductive Boost topology driving - Google Patents
The brshless DC motor commutation torque ripple minimization method of noninductive Boost topology driving Download PDFInfo
- Publication number
- CN107222134A CN107222134A CN201710472751.7A CN201710472751A CN107222134A CN 107222134 A CN107222134 A CN 107222134A CN 201710472751 A CN201710472751 A CN 201710472751A CN 107222134 A CN107222134 A CN 107222134A
- Authority
- CN
- China
- Prior art keywords
- motor
- brshless
- converter
- noninductive
- msub
- 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
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/10—Arrangements for controlling torque ripple, e.g. providing reduced torque ripple
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/14—Electronic commutators
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
A kind of brshless DC motor commutation torque ripple minimization method of noninductive Boost topology driving：A kind of noninductive DC DC converters addition is designed in three-phase voltage source inverter prime, the three-phase voltage source inverter drive circuit of noninductive Boost topology is monolithically fabricated；Analyze effect of the different switching vector selectors to motor input voltage and noninductive DC DC converter output voltages；When the brshless DC motor operates in the non-commutation stage, normal mode, three kinds of mode of operations of boost mode and decompression mode are designed according to the effect of switching vector selector；By selecting three kinds of mode of operations, the output voltage of DC DC converters is adjusted on the premise of the normal speed governing of brshless DC motor is ensured；When the brshless DC motor operates in the commutation stage, suppress the commutation torque ripple of brshless DC motor using two fixed switching vector selectors.The present invention greatlys save the volume and cost of drive system.Effectively the commutation process time can be shortened while commutation torque ripple is suppressed, so as to improve the reliability of motor operation.
Description
Technical field
The present invention relates to a kind of brshless DC motor.More particularly to a kind of brushless dc of noninductive Boost topology driving
Machine commutation torque ripple minimization method.
Background technology
Brshless DC motor is simple in construction with its, and power density is high and the advantages of stable and reliable operation, in Industry Control, navigates
Empty space flight and electric automobile field are used widely.However, because motor inductances and limited contravarianter voltage are hindered and changed
The quick change of phase current during phase, thus motor produces larger torque ripple, maximum commutation torque ripple in commutation process
The 50% of dynamic reachable average torque.Commutation torque ripple can cause vibration and the noise of electric system, and reduce the band load of motor
Ability, is to limit one of subject matter of brshless DC motor high-performance operation.
In recent years, scholars have made intensive studies to commutation torque ripple minimization.Suppress brshless DC motor commutation to turn
The common method of square fluctuation mainly includes two classes：(1) pulse duration modulation method (PWM method), the essential idea of this method is to maintain
Non-commutation phase current it is steady, so as to realize the suppression of commutation torque ripple.(2) preceding stage DC-DC converter is added, this method
Essential idea is effectively to suppress commutation torque ripple by changing the DC input voitage of voltage source inverter.
However, existing commutation torque ripple minimization method still be present：For PWM method, when motor fortune
During higher rotation speed of the row below rated speed, under limited DC side voltage of converter limitation, such method passes through
The method of extension shut-off phase current fall time suppresses commutation torque ripple, can so extend the undesirable commutation process time.
For existing preceding stage DC-DC converter method, the power switch of the preceding stage DC-DC converter of addition is more, and needs addition
Extra inductance, which increase the volume of drive system and cost.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of high-precision servo for brshless DC motor and drive control
The brshless DC motor commutation torque ripple minimization method of the noninductive Boost topology driving of system.
The technical solution adopted in the present invention is：A kind of brshless DC motor commutation torque ripple of noninductive Boost topology driving
Dynamic suppressing method, comprises the following steps：
1) a kind of noninductive DC-DC converter addition is designed in three-phase voltage source inverter prime, is monolithically fabricated noninductive boosting
The three-phase voltage source inverter drive circuit of topology；
2) effect of the different switching vector selectors to motor input voltage and noninductive DC-DC converter output voltage is analyzed；
3) when the brshless DC motor operates in the non-commutation stage, according to the effect of switching vector selector design normal mode,
Three kinds of mode of operations of boost mode and decompression mode；By selecting three kinds of mode of operations, normally adjusted in guarantee brshless DC motor
The output voltage of DC-DC converter is adjusted on the premise of speed；
4) when the brshless DC motor operates in the commutation stage, brushless direct-current is suppressed using two fixed switching vector selectors
The commutation torque ripple of motor.
Described noninductive DC-DC converter circuit includes：The MOSFET pipes of DC-DC converter, DC side diode, and
DC-DC converter electric capacity.The source electrode of the MOSFET pipes of the DC-DC converter connects the negative pole and three of DC side diode respectively
The electrode input end of phase voltage source inventer, the drain electrode of the MOSFET pipes of the DC-DC converter passes through DC-DC converter electric capacity
Input DC power negative pole and the negative input of three-phase voltage source inverter, the positive pole of the DC side diode are connected respectively
Connect input DC power positive pole.
Step 2) include：In step 1) constitute noninductive Boost topology three-phase voltage source inverter drive circuit in, choosing
4 kinds of switching vector selectors are selected to realize the normal speed governing of brshless DC motor and the voltage regulation function of noninductive DC-DC converter, described 4
Plant switching vector selector and be expressed as Vm0, Vm1, Va0And Va1, wherein Vm0And Vm1For master vector, Va0And Va1For auxiliary vector；Main arrow
Measure and the voltage for being more than zero is provided to brshless DC motor, increase brshless DC motor forward current；Auxiliary vector is to brushless direct-current
Motor provides the voltage less than or equal to zero, reduces brshless DC motor forward current；Vm1Noninductive DC-DC converter can be reduced
Output voltage, Va1Noninductive DC-DC converter output voltage, V can be increasedm0And Va0It is equal to noninductive DC-DC converter output voltage
Do not influence.
Described switching vector selector Vm0The lower circuit that electric current passed through is：Input DC power positive pole passes sequentially through DC side two
The upper bridge arm MOSFET pipes of pole pipe and motor forward conduction phase connect the forward conduction phase of brshless DC motor, brshless DC motor
Negative sense conducting pass through motor negative sense turn on phase lower bridge arm MOSFET pipes connect input DC power negative pole.
Described switching vector selector Vm1The lower circuit that electric current passed through is：The positive pole of DC-DC converter electric capacity passes sequentially through DC-
The MOSFET pipes of DC converters and the upper bridge arm MOSFET pipes of motor forward conduction phase connect the forward conduction of brshless DC motor
Phase, the lower bridge arm MOSFET pipes that the negative sense conducting of brshless DC motor turns on phase by motor negative sense connect DC-DC converter
The negative pole of electric capacity.
Described switching vector selector Va0The lower circuit that electric current passed through is：The lower bridge arm MOSFET pipes of motor forward conduction phase
The negative pole of anti-paralleled diode connects the forward conduction phase of brshless DC motor, and the negative sense conducting of brshless DC motor passes through electricity
The anti-paralleled diode of the lower bridge arm MOSFET pipes of the lower bridge arm MOSFET pipes connection motor forward conduction phase of machine negative sense conducting phase
Positive pole.
Described switching vector selector Va1The lower circuit that electric current passed through is：The negative pole of DC-DC converter electric capacity by motor just
The forward conduction phase of brshless DC motor, DC-DC conversion are connected to the anti-paralleled diode of the lower bridge arm MOSFET pipes of conducting phase
The positive pole of device electric capacity passes sequentially through the anti-paralleled diode of DC-DC converter MOSFET pipes and the upper bridge arm of motor negative sense conducting phase
The negative sense conducting phase of the anti-paralleled diode connection brshless DC motor of MOSFET pipes connection.
Step 3) described in：
Normal mode, selection master vector is Vm0, auxiliary vector is Va0And the MOSFET shut-offs in DC-DC converter, the mould
Formula does not influence on the output voltage of DC-DC converter；
Boost mode, selection master vector is Vm0, auxiliary vector is Va1, the pattern can raise the output of DC-DC converter
Voltage；
Decompression mode, selection master vector is Vm1, auxiliary vector is Va0And the MOSFET conductings in DC-DC converter, the mould
Formula can reduce the output voltage of DC-DC converter；
The dutycycle for making normal mode is d1, when ensureing that motor input voltage is identical, the dutycycle d of boost mode2And drop
The dutycycle d of die pressing type3Respectively
In formula, UdcFor direct current power source voltage, UoFor the output voltage of DC-DC converter.
Step 4) in, in commutation area, selection dutycycle is dcmtMaster vector Vm1, dutycycle is 1-dcmtAuxiliary vector
Va0, wherein, commutation area dutycycle dcmtFor
In formula, E is opposite potential amplitude.
The brshless DC motor commutation torque ripple minimization method of the noninductive Boost topology driving of the present invention, extends with using
The PWM method of shut-off phase current compares, by using elevated contravarianter voltage and selected switching vector selector, can be in suppression
Effectively shorten the commutation process time while commutation torque ripple processed, so as to improve the reliability of motor operation.The present invention's
The brshless DC motor commutation torque ripple minimization method of noninductive Boost topology driving, the existing side with adding DC-DC converter
Method compares, and DC-DC boost topologies of the invention are simple, and required power device is less, greatlys save drive system
Volume and cost.Especially method of the invention is by the way that topology is blended with motor control, it is not necessary to add additional inductance, profit
The boost capability of topology is realized with the inductance characteristic of machine winding itself.
Brief description of the drawings
Fig. 1 is the controller chassis of the brshless DC motor commutation torque ripple minimization method of noninductive Boost topology driving of the invention
Figure；
In figure
1：Current controller 2：Normal mode
3：Boost mode 4：Decompression mode
5：Model selection 6：Back-emf is fitted
7：Commutation judges 8：Hall sensor
9：Brshless DC motor 10：Three-phase voltage source inverter
11：Noninductive Boost topology
Fig. 2 is the permanent-magnet brushless DC electric machine system equivalent circuit of noninductive DC-DC Boost topologies driving in the present invention；
Fig. 3 a are when motor operation is in non-commutation stage, switching vector selector Vm0The lower circuit that electric current passed through；
Fig. 3 b are when motor operation is in non-commutation stage, switching vector selector Vm1The lower circuit that electric current passed through；
Fig. 3 c are when motor operation is in non-commutation stage, switching vector selector Va0The lower circuit that electric current passed through；
Fig. 3 d are when motor operation is in non-commutation stage, switching vector selector Va1The lower circuit that electric current passed through；
Fig. 4 a are by a in commutation stage current+b-→a+c-When switching vector selector Vm1The lower circuit that electric current passed through；
Fig. 4 b are by a in commutation stage current+b-→a+c-When switching vector selector Va0The lower circuit that electric current passed through.
Embodiment
Brshless DC motor commutation torque with reference to embodiment and accompanying drawing to the noninductive Boost topology driving of the present invention
Fluctuation suppressing method is described in detail.
As shown in Figure 1.The brshless DC motor commutation torque ripple minimization method of the noninductive Boost topology driving of the present invention,
It is to judge to select the control method in non-commutation area or commutation area by operation interval.In non-commutation area, worked by reasonable selection
Pattern, adjusts the output voltage of noninductive DC-DC Boost topologies on the premise of the normal speed governing of motor is ensured.In commutation area, utilize
The output voltage of noninductive DC-DC Boost topologies, commutation torque ripple is suppressed using unified switching vector selector, and when shortening commutation
Between.
The brshless DC motor commutation torque ripple minimization method of the noninductive Boost topology driving of the present invention, including following step
Suddenly：
1) a kind of noninductive DC-DC converter addition is designed in three-phase voltage source inverter prime, is monolithically fabricated as shown in Figure 2
Noninductive Boost topology three-phase voltage source inverter drive circuit；In Fig. 2, C is DC-DC converter electric capacity；SiAnd Di, respectively
For the MOSFET pipes and its anti-paralleled diode in drive circuit, i ∈ { 1,2 ..., 7 } therein；D8For DC side diode；N
For motor three-phase windings neutral point.
Described noninductive DC-DC converter circuit includes：The MOSFET pipes S of DC-DC converter7, DC side diode D8,
With DC-DC converter electric capacity C.The MOSFET pipes S of the DC-DC converter7Source electrode connect DC side diode D respectively8It is negative
Pole and the electrode input end of three-phase voltage source inverter, the MOSFET pipes S of the DC-DC converter7Drain electrode become by DC-DC
Parallel operation electric capacity C connects input DC power negative pole and the negative input of three-phase voltage source inverter, the DC side two respectively
Pole pipe D8Positive pole connection input DC power positive pole.
2) effect of the different switching vector selectors to motor input voltage and noninductive DC-DC converter output voltage is analyzed；
Brshless DC motor only has the conducting of two phase windings using control mode, i.e. any time is turned on two-by-two in the present invention.
P and n is made to represent that forward current conducting mutually turns on phase, the p and n of different Hall sectors with negative current respectively according to phase current direction
As shown in table 1.
The forward current conducting of the different Hall sectors of table 1 is mutually and negative current turns on phase
| Ha Hb Hc | 1 0 1 | 1 0 0 | 1 1 0 | 0 1 0 | 0 1 1 | 0 0 1 |
| Hall sector | ⑤ | ④ | ⑥ | ② | ③ | ① |
| (p,n) | (a,b) | (a,c) | (b,c) | (b,a) | (c,a) | (c,b) |
Note：Ha, Hb and Hc are respectively a, the hall signal of b and c three-phases.Motor is pressed Hall order in table and transported from left to right
OK.
Make SpHAnd SnLBridge arm switching tube under bridge arm switching tube and n phases is represented in p phases respectively.According to switching vector selector to motor
The effect of input line voltage and storage capacitor voltage, proposes that lower of topology need to select 4 kinds of switching vector selectors in the present invention, you can
Realize the voltage regulation function of electric machine speed regulation and noninductive DC-DC Boost topologies output voltage.This 4 kinds of switching vector selectors are expressed as Vm0,
Vm1, Va0And Va1, wherein Vm0And Vm1For master vector, Va0And Va1For auxiliary vector, it is specific as shown in table 2.In table, Upn, UdcAnd Uo
Represent motor input line voltage in unit controlling cycle respectively, direct current power source voltage and DC-DC converter output voltage are averaged
Value.
4 kinds of switching vector selectors that table 2 is designed herein
Note：" 1 " represents switching tube conducting, and " 0 " represents switching tube shut-off, and " x " represents switching tube on or off."-" table
Showing does not influence, and " ↑ " represents increase, and " ↓ " represents to reduce.The non-row switching tube of other in table is turned off.
The different switching vector selectors of heretofore described analysis are to motor input voltage and noninductive DC-DC converter output voltage
Effect, including：
In step 1) constitute noninductive Boost topology three-phase voltage source inverter drive circuit in, select 4 kinds switch arrow
Measure to realize the normal speed governing of brshless DC motor and the voltage regulation function of noninductive DC-DC converter, described 4 kinds of switching vector selectors point
V is not expressed as itm0, Vm1, Va0And Va1, wherein Vm0And Vm1For master vector, Va0And Va1For auxiliary vector；Master vector is to brushless direct-current
Motor provides the voltage more than zero, increases brshless DC motor forward current；Auxiliary vector is provided to brshless DC motor to be less than
Or null voltage, reduce brshless DC motor forward current；Vm1Noninductive DC-DC converter output voltage, V can be reduceda1
Noninductive DC-DC converter output voltage, V can be increasedm0And Va0Noninductive DC-DC converter output voltage is not influenceed.It is logical
The switching vector selector crossed in reasonable selection master vector and auxiliary vector, can realize the voltage regulation function of DC-DC converter.Wherein：
As shown in Figure 3 a, described switching vector selector Vm0The lower circuit that electric current passed through is：Input DC power positive pole is successively
Pass through DC side diode D8With the upper bridge arm MOSFET pipes S of motor forward conduction phasepHConnect the positive guide of brshless DC motor
Logical phase p, the negative sense conducting phase n of brshless DC motor turn on the lower bridge arm MOSFET pipes S of phase by motor negative sensenLConnection input is straight
Flow power cathode.
As shown in Figure 3 b, described switching vector selector Vm1The lower circuit that electric current passed through is：DC-DC converter electric capacity C is just
Pole passes sequentially through the MOSFET pipes S of DC-DC converter7With the upper bridge arm MOSFET pipes S of motor forward conduction phasepHIt is straight that connection is brushless
The forward conduction phase p of motor is flowed, the negative sense conducting phase n of brshless DC motor turns on the lower bridge arm MOSFET of phase by motor negative sense
Pipe SnLConnect DC-DC converter electric capacity C negative pole.
As shown in Figure 3 c, described switching vector selector Va0The lower circuit that electric current passed through is：The lower bridge of motor forward conduction phase
Arm MOSFET pipes SpLAnti-paralleled diode DpLNegative pole connect brshless DC motor forward conduction phase p, brshless DC motor
Negative sense conducting phase n pass through motor negative sense turn on phase lower bridge arm MOSFET pipes SnLConnect the lower bridge arm of motor forward conduction phase
MOSFET pipes SpLAnti-paralleled diode DpLPositive pole.
As shown in Figure 3 d, described switching vector selector Va1The lower circuit that electric current passed through is：DC-DC converter electric capacity C's is negative
The lower bridge arm MOSFET pipes S that pole passes through motor forward conduction phasepLAnti-paralleled diode DpLConnect the forward direction of brshless DC motor
Phase p is turned on, DC-DC converter electric capacity C positive pole passes sequentially through DC-DC converter MOSFET pipes S7Anti-paralleled diode D7With
Motor negative sense turns on the upper bridge arm MOSFET pipes S of phasenHThe anti-paralleled diode D of connectionnHThe negative sense of connection brshless DC motor is led
Logical phase n.
3) when the brshless DC motor operates in the non-commutation stage, according to the reasonably combined master vector of the effect of switching vector selector
And auxiliary vector, design normal mode, three kinds of mode of operations of boost mode and decompression mode；By selecting three kinds of mode of operations,
The output voltage of DC-DC converter is adjusted on the premise of the normal speed governing of brshless DC motor is ensured；With Hall sector in table 2 4.
Exemplified by, the mean value calculation of motor input line voltage is as follows in unit controlling cycle under three kinds of mode of operations：Wherein,
(1) normal mode, selection master vector is Vm0, auxiliary vector is Va0And the MOSFET shut-offs in DC-DC converter,
The pattern does not influence on the output voltage of DC-DC converter；
As shown in Fig. 3 a and Fig. 3 c, V is madem0Dutycycle be d1, Va0Dutycycle be 1-d1, now SnLPerseverance conducting, S7It is permanent
Shut-off, SpHWith dutycycle d1Copped wave.The average input line voltage U of motorpnFor
Upn=d1Udc+(1-d1) 0=d1Udc (1)
In formula, UpnAnd UdcThe average value of unit controlling cycle motor input line voltage and direct current power source voltage is represented respectively.
(2) boost mode, selection master vector is Vm0, auxiliary vector is Va1, the pattern can raise DC-DC converter
Output voltage；
As shown in Fig. 3 a and Fig. 3 d, V is madem0Dutycycle be d2, Va1Dutycycle be 1-d2, now S7Perseverance shut-off, SpHWith
SnLSimultaneously with dutycycle d2Copped wave.Average input line voltage UpnFor
In formula, UoRepresent the average value of unit controlling cycle DC-DC converter output voltage.
(3) decompression mode, selection master vector is Vm1, auxiliary vector is Va0And the MOSFET conductings in DC-DC converter,
The pattern can reduce the output voltage of DC-DC converter；
As shown in Fig. 3 b and Fig. 3 c, V is madem1Dutycycle be d3, Va0Dutycycle be 1-d3, now S7And SnLPerseverance conducting,
SpHWith dutycycle d3Copped wave.Average input line voltage UpnFor
Upn=d3Uo+(1-d3) 0=d3Uo (3)
Formula (1) is substituted into formula (2) and formula (3) respectively, in the normal mode under effective vector duty cycle d1On the basis of, identical electricity
D under machine input line voltage2And d3Respectively
In formula, UdcFor direct current power source voltage, UoFor the output voltage of DC-DC converter.
From formula (1)~(3), these three control models can make motor input line voltage meet Upn∈[0,Udc],
So as to ensure the normal speed governing demand of motor.In addition, according to noninductive Boost topology output voltage UoWith reference voltage UrefComparison
Relation selects suitable mode of operation, so as to adjust the output voltage of noninductive Boost topology so that commutation process is used.Consider electricity
Press the ring width w of hysteresis comparator0, non-commutation area modulation strategy is as shown in table 3.
The non-commutation area modulation strategy of table 3
Note：" 1 " represents switching tube conducting, and " 0 " represents switching tube shut-off, " d1”,“d2" and " d3" represent respective switch pipe with
The dutycycle copped wave.Other non-row switching tubes are turned off.
4) when the brshless DC motor operates in the commutation stage, brushless direct-current is suppressed using two fixed switching vector selectors
The commutation torque ripple of motor.In commutation area, selection dutycycle is dcmtMaster vector Vm1, dutycycle is 1-dcmtAuxiliary vector
Va0, and S7Conducting.It is as shown in table 4 according to the modulation strategy that table 2 can obtain commutation area.
The commutation area modulation strategy of table 4
Note：" 1 " represents switching tube conducting, " dcmt" represent respective switch pipe with the dutycycle copped wave.Other non-row switching tubes
It is turned off.Motor is pressed Hall order in table and run from left to right.
With Hall period 4. middle electric current by a+b-→a+c-Exemplified by, the equivalent circuit under switching vector selector effect is as shown in Figure 4.
According to Fig. 4 a and Fig. 4 b, brushless dc set end voltage equation is as follows：
In formula, R is machine winding phase resistance.L is machine winding phase inductance.ua,ubAnd ucIt is relative for motor three-phase windings end
DC power cathode voltage.uNIt is the relative DC power cathode voltage of machine winding neutral point.ia,ibAnd icFor motor three-phase around
Group phase current.ea,ebAnd ecFor motor three-phase windings phase back-emf.
Assuming that commutation stage back-emf is constant, three-phase windings terminal voltage and opposite potential are flat in commutation area unit controlling cycle
Average is respectively
In formula, Ua, UbAnd UcFor unit controlling cycle terminal voltage average value；Ea, EbAnd EcOpposite potential during for commutation；E is
Opposite potential amplitude during commutation.
Formula (6) is substituted into formula (5) and negligible resistance, Non-commutation phase current iaThe average rate of change be respectively
According to formula (7), commutation torque ripple, commutation area dutycycle d are suppressed to maintain Non-commutation phase current constantcmtNeed
Meet
Because dutycycle dcmt∈ [0,1], understands that storage capacitor voltage needs to meet by formula (8)
Uo≥4E (9)
Similar, analysis process and the dutycycle d of other Hall sectorscmtDerivation result it is 4. identical with Hall sector.
In summary, under the conditions of the formula that meets (9), commutation area selection master vector Vm1With auxiliary vector Va0Can effectively it press down
Commutation torque ripple processed.
Claims (9)
1. a kind of brshless DC motor commutation torque ripple minimization method of noninductive Boost topology driving, it is characterised in that including
Following steps：
1) a kind of noninductive DC-DC converter addition is designed in three-phase voltage source inverter prime, is monolithically fabricated noninductive Boost topology
Three-phase voltage source inverter drive circuit；
2) effect of the different switching vector selectors to motor input voltage and noninductive DC-DC converter output voltage is analyzed；
3) when the brshless DC motor operates in the non-commutation stage, normal mode, boosting are designed according to the effect of switching vector selector
Three kinds of mode of operations of pattern and decompression mode；By selecting three kinds of mode of operations, ensureing the normal speed governing of brshless DC motor
Under the premise of adjust DC-DC converter output voltage；
4) when the brshless DC motor operates in the commutation stage, brshless DC motor is suppressed using two fixed switching vector selectors
Commutation torque ripple.
2. the brshless DC motor commutation torque ripple minimization method of noninductive Boost topology driving according to claim 1,
Characterized in that, described noninductive DC-DC converter circuit includes：MOSFET pipes (the S of DC-DC converter7), the pole of DC side two
Manage (D8), and DC-DC converter electric capacity (C).MOSFET pipes (the S of the DC-DC converter7) source electrode connect DC side respectively
Diode (D8) negative pole and three-phase voltage source inverter electrode input end, the DC-DC converter MOSFET pipe (S7)
Drain electrode connects input DC power negative pole respectively by DC-DC converter electric capacity (C) and the negative pole of three-phase voltage source inverter is defeated
Enter end, the DC side diode (D8) positive pole connection input DC power positive pole.
3. the brshless DC motor commutation torque ripple minimization method of noninductive Boost topology driving according to claim 1,
Characterized in that, step 2) include：In step 1) constitute noninductive Boost topology three-phase voltage source inverter drive circuit in,
4 kinds of switching vector selectors are selected to realize the normal speed governing of brshless DC motor and the voltage regulation function of noninductive DC-DC converter, it is described
4 kinds of switching vector selectors are expressed as Vm0, Vm1, Va0And Va1, wherein Vm0And Vm1For master vector, Va0And Va1For auxiliary vector；Main arrow
Measure and the voltage for being more than zero is provided to brshless DC motor, increase brshless DC motor forward current；Auxiliary vector is to brushless direct-current
Motor provides the voltage less than or equal to zero, reduces brshless DC motor forward current；Vm1Noninductive DC-DC converter can be reduced
Output voltage, Va1Noninductive DC-DC converter output voltage, V can be increasedm0And Va0It is equal to noninductive DC-DC converter output voltage
Do not influence.
4. the brshless DC motor commutation torque ripple minimization method of noninductive Boost topology driving according to claim 3,
Characterized in that, described switching vector selector Vm0The lower circuit that electric current passed through is：Input DC power positive pole passes sequentially through direct current
Side diode (D8) and motor forward conduction phase upper bridge arm MOSFET pipe (SpH) connection brshless DC motor forward conduction phase
(p) the lower bridge arm MOSFET that, the negative sense conducting phase (n) of brshless DC motor turns on phase by motor negative sense manages (SnL) connection input
DC power cathode.
5. the brshless DC motor commutation torque ripple minimization method of noninductive Boost topology driving according to claim 3,
Characterized in that, described switching vector selector Vm1The lower circuit that electric current passed through is：The positive pole of DC-DC converter electric capacity (C) is successively
(S is managed by the MOSFET of DC-DC converter7) and motor forward conduction phase upper bridge arm MOSFET pipe (SpH) connection brushless direct-current
The forward conduction phase (p) of motor, the negative sense conducting phase (n) of brshless DC motor turns on the lower bridge arm of phase by motor negative sense
MOSFET manages (SnL) connection DC-DC converter electric capacity (C) negative pole.
6. the brshless DC motor commutation torque ripple minimization method of noninductive Boost topology driving according to claim 3,
Characterized in that, described switching vector selector Va0The lower circuit that electric current passed through is：The lower bridge arm MOSFET of motor forward conduction phase
Manage (SpL) anti-paralleled diode (DpL) negative pole connect brshless DC motor forward conduction phase (p), brshless DC motor
The lower bridge arm MOSFET that negative sense conducting phase (n) turns on phase by motor negative sense manages (SnL) connection motor forward conduction phase lower bridge arm
MOSFET manages (SpL) anti-paralleled diode (DpL) positive pole.
7. the brshless DC motor commutation torque ripple minimization method of noninductive Boost topology driving according to claim 3,
Characterized in that, described switching vector selector Va1The lower circuit that electric current passed through is：The negative pole of DC-DC converter electric capacity (C) passes through
The lower bridge arm MOSFET pipes (S of motor forward conduction phasepL) anti-paralleled diode (DpL) connection brshless DC motor positive guide
Logical phase (p), the positive pole of DC-DC converter electric capacity (C) passes sequentially through DC-DC converter MOSFET pipes (S7) anti-paralleled diode
(D7) and motor negative sense conducting phase upper bridge arm MOSFET pipe (SnH) connection anti-paralleled diode (DnH) connection brushless dc
The negative sense conducting phase (n) of machine.
8. the brshless DC motor commutation torque ripple minimization method of noninductive Boost topology driving according to claim 1,
Characterized in that, step 3) described in：
Normal mode, selection master vector is Vm0, auxiliary vector is Va0And the MOSFET shut-offs in DC-DC converter, the pattern pair
The output voltage of DC-DC converter does not influence；
Boost mode, selection master vector is Vm0, auxiliary vector is Va1, the pattern can raise the output voltage of DC-DC converter；
Decompression mode, selection master vector is Vm1, auxiliary vector is Va0And the MOSFET conductings in DC-DC converter, the pattern energy
Enough reduce the output voltage of DC-DC converter；
The dutycycle for making normal mode is d1, when ensureing that motor input voltage is identical, the dutycycle d of boost mode2With decompression mould
The dutycycle d of formula3Respectively
<mfenced open = "{" close = "">
<mtable>
<mtr>
<mtd>
<msub>
<mi>d</mi>
<mn>2</mn>
</msub>
<mo>=</mo>
<mfrac>
<mrow>
<msub>
<mi>d</mi>
<mn>1</mn>
</msub>
<msub>
<mi>U</mi>
<mrow>
<mi>d</mi>
<mi>c</mi>
</mrow>
</msub>
<mo>+</mo>
<msub>
<mi>U</mi>
<mi>o</mi>
</msub>
</mrow>
<mrow>
<msub>
<mi>U</mi>
<mrow>
<mi>d</mi>
<mi>c</mi>
</mrow>
</msub>
<mo>+</mo>
<msub>
<mi>U</mi>
<mi>o</mi>
</msub>
</mrow>
</mfrac>
</mtd>
</mtr>
<mtr>
<mtd>
<mrow>
<msub>
<mi>d</mi>
<mn>3</mn>
</msub>
<mo>=</mo>
<mfrac>
<mrow>
<msub>
<mi>d</mi>
<mn>1</mn>
</msub>
<msub>
<mi>U</mi>
<mrow>
<mi>d</mi>
<mi>c</mi>
</mrow>
</msub>
</mrow>
<msub>
<mi>U</mi>
<mi>o</mi>
</msub>
</mfrac>
</mrow>
</mtd>
</mtr>
</mtable>
</mfenced>
In formula, UdcFor direct current power source voltage, UoFor the output voltage of DC-DC converter.
9. the brshless DC motor commutation torque ripple minimization method of noninductive Boost topology driving according to claim 1,
Characterized in that, step 4) in, in commutation area, selection dutycycle is dcmtMaster vector Vm1, dutycycle is 1-dcmtAuxiliary vector
Va0, wherein, commutation area dutycycle dcmtFor
<mrow>
<msub>
<mi>d</mi>
<mrow>
<mi>c</mi>
<mi>m</mi>
<mi>t</mi>
</mrow>
</msub>
<mo>=</mo>
<mn>0.5</mn>
<mo>+</mo>
<mfrac>
<mrow>
<mn>2</mn>
<mi>E</mi>
</mrow>
<msub>
<mi>U</mi>
<mi>o</mi>
</msub>
</mfrac>
</mrow>
In formula, E is opposite potential amplitude.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710472751.7A CN107222134B (en) | 2017-06-20 | 2017-06-20 | The brshless DC motor commutation torque ripple minimization method of noninductive Boost topology driving |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710472751.7A CN107222134B (en) | 2017-06-20 | 2017-06-20 | The brshless DC motor commutation torque ripple minimization method of noninductive Boost topology driving |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107222134A true CN107222134A (en) | 2017-09-29 |
| CN107222134B CN107222134B (en) | 2019-08-27 |
Family
ID=59949871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710472751.7A Active CN107222134B (en) | 2017-06-20 | 2017-06-20 | The brshless DC motor commutation torque ripple minimization method of noninductive Boost topology driving |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107222134B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109067267A (en) * | 2018-08-15 | 2018-12-21 | 天津大学 | One kind being used for brshless DC motor commutation torque ripple minimization method |
| CN113098334A (en) * | 2021-04-09 | 2021-07-09 | 哈尔滨理工大学 | Brushless direct current motor torque ripple suppression method based on boost topology |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104578877A (en) * | 2014-12-17 | 2015-04-29 | 南京航空航天大学 | Single-stage boost inverter |
| CN205847137U (en) * | 2016-05-26 | 2016-12-28 | 同济大学 | A kind of power drive system based on the quasi-Z-source inverter of switch inductive type |
| CN106655915A (en) * | 2017-03-06 | 2017-05-10 | 哈尔滨工程大学 | Method for acquiring compensating voltage restraining commutation torque pulsation device of brushless direct-current motor |
| CN109067267A (en) * | 2018-08-15 | 2018-12-21 | 天津大学 | One kind being used for brshless DC motor commutation torque ripple minimization method |
-
2017
- 2017-06-20 CN CN201710472751.7A patent/CN107222134B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104578877A (en) * | 2014-12-17 | 2015-04-29 | 南京航空航天大学 | Single-stage boost inverter |
| CN205847137U (en) * | 2016-05-26 | 2016-12-28 | 同济大学 | A kind of power drive system based on the quasi-Z-source inverter of switch inductive type |
| CN106655915A (en) * | 2017-03-06 | 2017-05-10 | 哈尔滨工程大学 | Method for acquiring compensating voltage restraining commutation torque pulsation device of brushless direct-current motor |
| CN109067267A (en) * | 2018-08-15 | 2018-12-21 | 天津大学 | One kind being used for brshless DC motor commutation torque ripple minimization method |
Non-Patent Citations (2)
| Title |
|---|
| ARITRA GHOSH ET AL.: "《Torque ripple and efficiency optimization of a novel boost converter fed BLDC Motor Drive》", 《2016 INTERNATIONAL CONFERENCE ON COMPUTATION OF POWER, ENERGY INFORMATION AND COMMUINCATION (ICCPEIC)》 * |
| 张晓峰 等: "基于级联式拓扑的消除无刷直流电机传导区转矩脉动方法", 《电工技术学报》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109067267A (en) * | 2018-08-15 | 2018-12-21 | 天津大学 | One kind being used for brshless DC motor commutation torque ripple minimization method |
| CN109067267B (en) * | 2018-08-15 | 2021-10-22 | 天津大学 | Commutation torque fluctuation suppression method for brushless direct current motor |
| CN113098334A (en) * | 2021-04-09 | 2021-07-09 | 哈尔滨理工大学 | Brushless direct current motor torque ripple suppression method based on boost topology |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107222134B (en) | 2019-08-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106487287B (en) | A kind of brshless DC motor commutation torque ripple minimization method | |
| DE112009004991B4 (en) | Converter control apparatus | |
| US20090171521A1 (en) | AC Link Bidirectional DC-DC Converter, Hybrid Power Supply System Using the Same and Hybrid Vehicle | |
| CN204633600U (en) | A kind of novel crisscross parallel topology structure of stepping-up/stepping-down chopper circuit | |
| CN113659914B (en) | Drive circuit for high-speed switched reluctance motor and control method thereof | |
| CN106026660A (en) | Electric power conversion circuit system | |
| CN105048817A (en) | Buck-Boost type high-power bidirectional DC/DC converter with coupled inductors | |
| CN107222134A (en) | The brshless DC motor commutation torque ripple minimization method of noninductive Boost topology driving | |
| CN113676110B (en) | Front-stage decoupling control method for electro-magnetic doubly salient motor driving and charging integrated system | |
| CN109980931B (en) | Method for eliminating dead zone of non-reverse Buck-Boost converter operation | |
| CN110323945A (en) | A kind of crisscross parallel bi-directional DC-DC current transformer and its control method | |
| CN203104294U (en) | Modularized highly efficient DC/DC converter | |
| CN112297894A (en) | Integrated vehicle-mounted charger with wide-range output | |
| CN107017776A (en) | New isolation type active clamping alternation parallel Boost soft switch transducers and method of work | |
| CN103427631A (en) | Brushless direct-current motor power converter | |
| CN107612030B (en) | Photovoltaic converter with current quasi-critical continuous and device soft switch | |
| CN114825936A (en) | Two-phase staggered flying capacitor bidirectional direct current converter based on coupling inductor | |
| CN111130351B (en) | Low-delay self-adaptive bidirectional DCDC converter and control method thereof | |
| He et al. | A Four-Phase Interleaved Four-Switch Buck-Boost Converter with Smooth Mode Transition Strategy for Fuel Cell System | |
| CN211557151U (en) | Low-delay self-adaptive bidirectional DCDC converter | |
| JP2003284330A (en) | Control device, method for controlling, and computer readable recording medium recorded with program for making computer control voltage conversion | |
| CN103895696B (en) | A kind of electric boosting steering system | |
| CN202455273U (en) | Digital two-way direct current/direct current converter used for electric drive vehicles | |
| CN113437907B (en) | Method for restraining commutation torque fluctuation of permanent magnet brushless direct current motor by DC-DC converter | |
| CN101989832A (en) | Frequency control of motor speed driver of double-fed energy three-phase electric machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |