CN103812400A - Five-phase brushless direct current motor control method and electromobile - Google Patents
Five-phase brushless direct current motor control method and electromobile Download PDFInfo
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- CN103812400A CN103812400A CN201210450274.1A CN201210450274A CN103812400A CN 103812400 A CN103812400 A CN 103812400A CN 201210450274 A CN201210450274 A CN 201210450274A CN 103812400 A CN103812400 A CN 103812400A
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- 238000004804 winding Methods 0.000 claims description 21
- 230000010349 pulsation Effects 0.000 claims description 10
- 230000006698 induction Effects 0.000 description 5
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- 239000002699 waste material Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
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Abstract
The invention relates to a five-phase brushless direct current motor control method and an electromobile. The method includes that a new operation state is inserted in front of each original operation state of a connection mode of a five-phase brushless direct current motor with each original operation state operating for a period in advance compared with the original connection mode. The original operation states are that two upper bridge arm switches are switched on, and two lower bridge arm switches are switched on. The new operation states are that one bridge arm switch in four switched-on bridge arm switches in the original operation states behind the new operation states is switched off, and the other three bridge arm switches are still switched on. Ten new operation states are added on the basis of the original ten operation states in four-four connection, the ten new operation states are arranged in front of the original operation states respectively, the original operation states are connected a period in advance, motor pulse current is reduced, noise is reduced during light load, and the highest operation speed is increased about 20%.
Description
Technical field
The present invention relates to electric motor car five-phase induction motor control field, relate in particular to a kind of five-phase brushless DC motor control method and electric motor car.
Background technology
Now the main flow motor of electric motor car can be divided into three-phase brushless dc motor and five-phase brushless DC motor on the market, three-phase brushless dc motor adopts conducting control mode between two because of it, toque and efficiency is less than normal, and while entering saturation condition, rotating speed obviously declines, and affects the cruising time of storage battery; And five-phase brushless DC motor adopts four or four conducting control modes because of it, toque and efficiency obviously increases, while entering saturation condition, rotating speed can obviously not decline, moment of torsion also can be larger than common three phase electric machine, torque pulsation is little, directly start load without slowing down, reaction speed is fast, can extend the cruising time of storage battery.
But in actual use, five-phase brushless DC motor adopts four or four conducting control modes, when light running, noise is bigger than normal, and because torque drive consumes greatly more multipotency, while travelling on smooth road as electric motor car, because it possesses certain speed and inertia, do not need so large torque actuated, and four or four conduction modes have larger torque pulsation, it will consume more energy, and the consumption of this energy is a kind of waste.
Existing five phase control modes are mostly four or four conduction modes, 10 corresponding 10 running statuses of Hall state, four winding energisings of each state motor, bring up to 80% than three phase electric machine winding utilization from 66.7% with the five-phase induction motor of this kind of mode control, the power density of motor improves greatly, torque when low-speed running has improved more than 20%, but the electric motor car of this kind of mode does not need so large torque actuated in the time of underloading, when operation, motor pulsating current is larger, have comparatively significantly noise, larger torque pulsation has caused the waste of electric energy.
For the obvious problem of four or four conduction mode underloading noise, in prior art, there are a kind of four or three conduction modes that reduce five-phase induction motor pulsating current, be specially the power switch pipe that shifts to an earlier date a brachium pontis of a period of time shutoff in each original running status later stage, be equivalent to add 1 new running status after each original 10 running statuses, new running status is opened three power switch pipes at every turn, make during this period of time three windings energisings of motor, reduce the pulsating current of motor with this.But the motor torque when operation of this kind of control mode is little compared with four or four conduction modes, when heavy duty, may enter stall and do not bring into play the potential of motor, and increase the burden of power switch pipe when heavy duty, improve the failure rate of controller.
Summary of the invention
Main purpose of the present invention is to provide a kind of five-phase brushless DC motor control method, the problem of the large and waste energy of noise while being intended to solve existing five-phase brushless DC motor light running.
The present invention is achieved in that a kind of five-phase brushless DC motor control method, comprises the steps:
Before the each former running status of the conduction mode of described five-phase brushless DC motor, insert respectively new running status one by one, and each former running status is moved a period of time in advance than the running status of original conduction mode, described former running status is that two upper brachium pontis switches are opened, two running statuses that lower brachium pontis switch is opened, and described new running status is to be arranged in four of former running status thereafter to open that one of them brachium pontis switch of brachium pontis switch turn-offs, other three running statuses that brachium pontis switch is still opened.
Another object of the present invention is to provide a kind of five-phase brushless DC motor control method, comprise the steps:
Carry out initialization setting, On current threshold value and First Speed threshold value, second speed threshold value and the third speed threshold value of setting different conduction modes, described conduction mode comprises following four kinds: each running status is opened four or four conduction modes of four brachium pontis switches at every turn; Each running status is opened three or three conduction modes of three brachium pontis switches at every turn; After the each former running status of described four or four conduction modes, increase four or three conduction modes of only opening the new running status of three brachium pontis switches; And before the each former running status of described four or four conduction modes, increase a new running status of only opening three brachium pontis switches and each former running status and move in advance than the running status of former four or four conduction modes three or four conduction modes of a period of time;
When motor has just started, enter described four or four conduction modes;
When motor On current is less than described On current threshold value, and motor speed is between described First Speed threshold value and second speed threshold value, enters described four or three conduction modes;
When motor On current is less than described On current threshold value, and motor speed is between described second speed threshold value and third speed threshold value, enters described three or three conduction modes;
When motor On current is less than described On current threshold value, and motor speed is greater than described third speed threshold value, enters described three or four conduction modes;
When motor On current is greater than described On current threshold value, enter four or four conduction modes.
Another object of the present invention is to provide a kind of electric motor car, described electric motor car comprises motor control module, and described motor control module comprises:
Initialization unit, be used for carrying out initialization setting, On current threshold value and First Speed threshold value, second speed threshold value and the third speed threshold value of setting different conduction modes, described conduction mode comprises following four kinds: each running status is opened four or four conduction modes of four brachium pontis switches at every turn; Each running status is opened three or three conduction modes of three brachium pontis switches at every turn; After the each former running status of described four or four conduction modes, increase four or three conduction modes of only opening the new running status of three brachium pontis switches; And before the each former running status of described four or four conduction modes, increase a new running status of only opening three brachium pontis switches and each former running status and move in advance than the running status of former four or four conduction modes three or four conduction modes of a period of time;
Start unit, while just startup, enters described four or four conduction modes for motor;
The first control unit, for being less than described On current threshold value when motor On current, and motor speed is between described First Speed threshold value and second speed threshold value, enters described four or three conduction modes;
The second control unit, for being less than described On current threshold value when motor On current, and motor speed is between described second speed threshold value and third speed threshold value, enters described three or three conduction modes;
The 3rd control unit, for being less than described On current threshold value when motor On current, and motor speed is greater than described third speed threshold value, enters described three or four conduction modes;
The 4th control unit, for being greater than described On current threshold value when motor On current, enters four or four conduction modes.
In the present invention, on 10 running status bases of original four or four conductings, increase by 10 new running statuses, be different from four or three conduction modes, before these 10 new running statuses are placed in respectively former running status, and open in advance original running status a period of time, this kind of mode not only can reduce motor pulsating current, in the time of underloading, reduces outside noise, its highest running speed can improve 20% left and right, can meet the requirement of part client to speed.
Accompanying drawing explanation
Fig. 1 is the flow chart of the five-phase brushless DC motor control method that provides of the embodiment of the present invention;
Fig. 2 is the structural representation of the motor control module that provides of the embodiment of the present invention;
Fig. 3 be the embodiment of the present invention provide underloading time the phase current figure of a certain phase when four or four conduction mode;
Fig. 4 be the embodiment of the present invention provide underloading time the phase current figure of a certain phase when three or four conduction mode.
Embodiment
In order to make object of the present invention, principle and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
In the present invention, before the each former running status of the conduction mode of described five-phase brushless DC motor, insert respectively new running status one by one, and each former running status is moved a period of time in advance than the running status of original conduction mode, not only can reduce motor pulsating current, in the time of underloading, reduce outside noise, its highest running speed can improve 20% left and right.
The present invention is achieved in that a kind of five-phase brushless DC motor control method, comprises the steps:
Before the each former running status of the conduction mode of described five-phase brushless DC motor, insert respectively new running status one by one, and each former running status is moved a period of time in advance than the running status of original conduction mode, described former running status is that two upper brachium pontis switches are opened, two running statuses that lower brachium pontis switch is opened, and described new running status is to be arranged in four of former running status thereafter to open that one of them brachium pontis switch of brachium pontis switch turn-offs, other three running statuses that brachium pontis switch is still opened.
As one embodiment of the invention, totally ten of the former running statuses of described five-phase brushless DC motor, insert ten new running statuses altogether.
As one embodiment of the invention, 20 running statuses of described five-phase brushless DC motor are followed successively by:
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Described state 1, state 2, state 3, state 4, state 5, state 6, state 7, state 8, state 9, state 10 is former running status, described state 1 ', state 2 ', state 3 ', state 4 ', state 5 ', state 6 ', state 7 ', state 8 ', state 9 ', state 10 ' be the new running status of inserting in advance, before described new running status is inserted respectively former running status, described former running status is all moved the time of a state in advance than the running status of former conduction mode, wherein, A, B, C, D, E is respectively five phase windings of described five-phase brushless DC motor, A
on, B
on, C
on, D
on, E
onbe respectively the upper brachium pontis switch in described five phase winding full-bridge switch loops, A
under, B
under, C
under, D
under, E
underbe respectively the lower brachium pontis switch in described five phase winding full-bridge switch loops.
As one embodiment of the invention, described each former running status is moved in advance definite method of a period of time in a period of time than the running status of original conduction mode and is:
Adopting several to shift to an earlier date running time goes test, the size of observing winding current pulsation, obtaining current to pulse the minimum time for best running time in advance.
Fig. 1 shows the flow process of the five-phase brushless DC motor control method that the embodiment of the present invention provides, and for convenience of explanation, only shows part related to the present invention, and details are as follows.
Another object of the present invention is to provide a kind of five-phase brushless DC motor control method, described control method comprises the following steps:
In step S100, carry out initialization setting, On current threshold value and First Speed threshold value, second speed threshold value and the third speed threshold value of setting different conduction modes, described conduction mode comprises following four kinds: each running status is opened four or four conduction modes of four brachium pontis switches at every turn; Each running status is opened three or three conduction modes of three brachium pontis switches at every turn; After the each former running status of described four or four conduction modes, increase four or three conduction modes of only opening the new running status of three brachium pontis switches; And before the each former running status of described four or four conduction modes, increase a new running status of only opening three brachium pontis switches and each former running status and move in advance than the running status of former four or four conduction modes three or four conduction modes of a period of time;
In step S200, when motor has just started, enter described four or four conduction modes;
In step S300, when motor On current is less than described On current threshold value, and motor speed is between described First Speed threshold value and second speed threshold value, enters described four or three conduction modes;
In step S400, when motor On current is less than described On current threshold value, and motor speed is between described second speed threshold value and third speed threshold value, enters described three or three conduction modes;
In step S500, when motor On current is less than described On current threshold value, and motor speed is greater than described third speed threshold value, enters described three or four conduction modes;
In step S600, when motor On current is greater than described On current threshold value, enter four or four conduction modes.
As one embodiment of the invention, former four or four conduction modes in described three or four conduction modes have ten running statuses, insert altogether ten new running statuses in described three or four conduction modes.
As one embodiment of the invention, 20 running statuses of described three or four conduction modes are followed successively by:
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Described state 1, state 2, state 3, state 4, state 5, state 6, state 7, state 8, state 9, state 10 is the former running status of described four or four conduction modes, described state 1 ', state 2 ', state 3 ', state 4 ', state 5 ', state 6 ', state 7 ', state 8 ', state 9 ', state 10 ' be the new running status of inserting in advance in three or four conduction modes, before described new running status is inserted respectively former running status, described former running status is all moved the time of a state in advance than the running status of former four or four conduction modes, wherein, A, B, C, D, E is respectively five phase windings of described five-phase brushless DC motor, A
on, B
on, C
on, D
on, E
onbe respectively the upper brachium pontis switch in described five phase winding full-bridge switch loops, A
under, B
under, C
under, D
under, E
underbe respectively the lower brachium pontis switch in described five phase winding full-bridge switch loops.
Be described in detail as follows:
Five phase control modes generally have 10 running statuses, table 1 is the truth table of four or four conduction modes, can find out, each state is opened pipe under two upper pipes, two, so motor has the parallel energising between two of four windings in each state, to switch on one by one than 6 running statuses in three phase controls and two windings, it is meticulousr that five-phase induction motor has control, noise is less, can the larger advantage of operate power.But, when motor is during in light running, have comparatively significantly pulsation because the impact of back electromotive force makes running current, as Fig. 3, this pulsation meeting increases along with the increase of motor speed, and therefore motor produces obvious noise and pulsating torque, has reduced the operational efficiency of motor.
Table 1
Table 2 is most important three or four conducting running status truth tables in the present invention, three or four conduction modes be on the basis of 10 states of former four or four conduction modes, increased by 10 new states 1 ', 2 ', 3 ', 4 ', 5 ', 6 ', 7 ', 8 ', 9 ', 10 ', each new state is before previous status, and each previous status is opened a period of time in advance, as the power switch pipe that in four or four conduction modes, state 1, state 2 are opened is respectively A
one
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under, A
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under, and the power switch pipe that in three or four conduction modes, state 1, state 2 are opened is respectively A
one
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under, A
onb
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underd
under, opened a period of time in advance than previous status.Utilize like this three or four modes of alternately opening, make within the time of a former state, it is open-minded that t only has 3 power switch pipes for some time, to reduce the impact of back electromotive force, thereby reduction pulsating current, as Fig. 4, reduces noise, although the torque under this mode is less than the torque of four or four conduction modes, the torque request while meeting underloading completely.Because open in advance next state a period of time, the highest running speed under this mode can improve 20% left and right.
Table 2
Table 3
Described three or three conduction modes, each running status is opened three power switch pipes at every turn, and as table 3, this kind of mode motor pulsating current is little, and operation torque is little compared with above-mentioned several modes, the requirement of low noise low power consuming while meeting underloading low speed completely.
As one embodiment of the invention, in described three or four conduction modes, each former running status is moved in advance definite method of a period of time in a period of time than the running status of former four or four conduction modes and is:
Adopting several to shift to an earlier date running time goes test, the size of observing winding current pulsation, obtaining current to pulse the minimum time for best running time in advance.
Fig. 2 shows the structure of the motor control module that the embodiment of the present invention provides, and for convenience of explanation, only shows part related to the present invention, and details are as follows.
Another object of the present invention is to provide a kind of electric motor car, comprise motor control module, described motor control module comprises:
Initialization unit 100, be used for carrying out initialization setting, On current threshold value and First Speed threshold value, second speed threshold value and the third speed threshold value of setting different conduction modes, described conduction mode comprises following four kinds: each running status is opened four or four conduction modes of four brachium pontis switches at every turn; Each running status is opened three or three conduction modes of three brachium pontis switches at every turn; After the each former running status of described four or four conduction modes, increase four or three conduction modes of only opening the new running status of three brachium pontis switches; And before the each former running status of described four or four conduction modes, increase a new running status of only opening three brachium pontis switches and each former running status and move in advance than the running status of former four or four conduction modes three or four conduction modes of a period of time;
Start unit 200, while just startup, enters described four or four conduction modes for motor;
The first control unit 300, for being less than described On current threshold value when motor On current, and motor speed is between described First Speed threshold value and second speed threshold value, enters described four or three conduction modes;
The second control unit 400, for being less than described On current threshold value when motor On current, and motor speed is between described second speed threshold value and third speed threshold value, enters described three or three conduction modes;
The 3rd control unit 500, for being less than described On current threshold value when motor On current, and motor speed is greater than described third speed threshold value, enters described three or four conduction modes;
The 4th control unit 600, for being greater than described On current threshold value when motor On current, enters four or four conduction modes.
In the present invention, in the time that electric motor car just starts, enter start unit 200, enter four or four conduction modes, to provide larger torque to make electric motor car starting strong.
When electric motor car drive current is less than On current threshold value, speed reach First Speed threshold value and remain on First Speed threshold value and second speed threshold value between time, electric motor car enters the first control unit 300, enter four or three conduction modes, because electric motor car in the process of underloading low speed driving with three or three conduction modes, here use the transition of four or three conduction modes as four or four conduction mode to three three conduction modes, to prevent that the sudden change of motor speed from causing electric motor car to occur Caton phenomenon.
When electric motor car drive current is less than On current threshold value, speed second speed threshold value and remain on second speed threshold value and third speed threshold value between time, electric motor car enters the second control unit 400, enter three or three conduction modes, because now electric motor car is underloading low speed driving, in the time of this stage, minimum, most effective with three or three conduction mode electro-mobile noises.
When electric motor car drive current is less than On current threshold value, when speed reaches third speed threshold value, electric motor car enters the 3rd control unit 500, enter three or four conduction modes, now electric motor car is that underloading is run at high speed, can reduce motor pulsating current by this kind of control mode, reduce noise, and operational efficiency be also the highest.
In the time that electric motor car drive current is greater than On current threshold value, electric motor car enters the 4th control unit 600, enters four or four conduction modes, and now electric motor car is that heavy duty is travelled, need larger torque actuated motor, and efficiency is now than high by the efficiency of other mode controls.
Four kinds of control modes are respectively having pluses and minuses aspect torque, efficiency, minimizing current pulsation, speed, the present invention changes its control mode according to electric motor car real time execution operating mode, the advantage part of four kinds of control modes is combined, to reach the optimal operational condition of five-phase induction motor electric motor car.
In the present invention, on 10 running status bases of original four or four conductings, increase by 10 new running statuses, be different from four or three conduction modes, before these 10 new running statuses are placed in respectively former running status, and open in advance original running status a period of time, this kind of mode not only can reduce motor pulsating current, in the time of underloading, reduces outside noise, its highest running speed can improve 20% left and right, can meet the requirement of part client to speed.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any modifications 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 (9)
1. a five-phase brushless DC motor control method, is characterized in that, described method comprises the steps:
Before the each former running status of the conduction mode of described five-phase brushless DC motor, insert respectively new running status one by one, and each former running status is moved a period of time in advance than the running status of original conduction mode, described former running status is that two upper brachium pontis switches are opened, two running statuses that lower brachium pontis switch is opened, and described new running status is to be arranged in four of former running status thereafter to open that one of them brachium pontis switch of brachium pontis switch turn-offs, other three running statuses that brachium pontis switch is still opened.
2. five-phase brushless DC motor control method as claimed in claim 1, is characterized in that, totally ten of the former running statuses of described five-phase brushless DC motor, insert ten new running statuses altogether.
3. five-phase brushless DC motor control method as claimed in claim 2, is characterized in that, 20 running statuses of described five-phase brushless DC motor are followed successively by:
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Described state 1, state 2, state 3, state 4, state 5, state 6, state 7, state 8, state 9, state 10 is former running status, described state 1 ', state 2 ', state 3 ', state 4 ', state 5 ', state 6 ', state 7 ', state 8 ', state 9 ', state 10 ' be the new running status of inserting in advance, before described new running status is inserted respectively former running status, described former running status is all moved the time of a state in advance than the running status of former conduction mode, wherein, A, B, C, D, E is respectively five phase windings of described five-phase brushless DC motor, A
on, B
on, C
on, D
on, E
onbe respectively the upper brachium pontis switch in described five phase winding full-bridge switch loops, A
under, B
under, C
under, D
under, E
underbe respectively the lower brachium pontis switch in described five phase winding full-bridge switch loops.
4. five-phase brushless DC motor control method as claimed in claim 1, is characterized in that, described each former running status is moved in advance definite method of a period of time in a period of time than the running status of original conduction mode and is:
Adopting several to shift to an earlier date running time goes test, the size of observing winding current pulsation, obtaining current to pulse the minimum time for best running time in advance.
5. a five-phase brushless DC motor control method, is characterized in that, described control method comprises the following steps:
Carry out initialization setting, On current threshold value and First Speed threshold value, second speed threshold value and the third speed threshold value of setting different conduction modes, described conduction mode comprises following four kinds: each running status is opened four or four conduction modes of four brachium pontis switches at every turn; Each running status is opened three or three conduction modes of three brachium pontis switches at every turn; After the each former running status of described four or four conduction modes, increase four or three conduction modes of only opening the new running status of three brachium pontis switches; And before the each former running status of described four or four conduction modes, increase a new running status of only opening three brachium pontis switches and each former running status and move in advance than the running status of former four or four conduction modes three or four conduction modes of a period of time;
When motor has just started, enter described four or four conduction modes;
When motor On current is less than described On current threshold value, and motor speed is between described First Speed threshold value and second speed threshold value, enters described four or three conduction modes;
When motor On current is less than described On current threshold value, and motor speed is between described second speed threshold value and third speed threshold value, enters described three or three conduction modes;
When motor On current is less than described On current threshold value, and motor speed is greater than described third speed threshold value, enters described three or four conduction modes;
When motor On current is greater than described On current threshold value, enter four or four conduction modes.
6. five-phase brushless DC motor control method as claimed in claim 5, is characterized in that, former four or four conduction modes in described three or four conduction modes have ten running statuses, inserts altogether ten new running statuses in described three or four conduction modes.
7. five-phase brushless DC motor control method as claimed in claim 6, is characterized in that, 20 running statuses of described three or four conduction modes are followed successively by:
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underopen-minded;
State 2:A
onb
onc
underd
underopen-minded;
State 3 ': A
onb
ond
underopen-minded;
State 3:A
onb
ond
undere
underopen-minded;
State 4 ': B
ond
undere
underopen-minded;
State 4:B
onc
ond
undere
underopen-minded;
State 5 ': B
onc
one
underopen-minded;
State 5:B
onc
ona
undere
underopen-minded;
State 6 ': C
ona
undere
underopen-minded;
State 6:C
ond
ona
undere
underopen-minded;
State 7 ': C
ond
ona
underopen-minded;
State 7:C
ond
ona
underb
underopen-minded;
State 8 ': D
ona
underb
underopen-minded;
State 8:D
one
ona
underb
underopen-minded;
State 9 ': D
one
onb
underopen-minded;
State 9:D
one
onb
underc
underopen-minded;
State 10 ': E
onb
underc
underopen-minded;
State 10:A
one
onb
underc
underopen-minded;
Described state 1, state 2, state 3, state 4, state 5, state 6, state 7, state 8, state 9, state 10 is the former running status of described four or four conduction modes, described state 1 ', state 2 ', state 3 ', state 4 ', state 5 ', state 6 ', state 7 ', state 8 ', state 9 ', state 10 ' be the new running status of inserting in advance in three or four conduction modes, before described new running status is inserted respectively former running status, described former running status is all moved the time of a state in advance than the running status of former four or four conduction modes, wherein, A, B, C, D, E is respectively five phase windings of described five-phase brushless DC motor, A
on, B
on, C
on, D
on, E
onbe respectively the upper brachium pontis switch in described five phase winding full-bridge switch loops, A
under, B
under, C
under, D
under, E
underbe respectively the lower brachium pontis switch in described five phase winding full-bridge switch loops.
8. five-phase brushless DC motor control method as claimed in claim 5, is characterized in that, in described three or four conduction modes, each former running status is moved in advance definite method of a period of time in a period of time than the running status of former four or four conduction modes and is:
Adopting several to shift to an earlier date running time goes test, the size of observing winding current pulsation, obtaining current to pulse the minimum time for best running time in advance.
9. an electric motor car, comprises motor control module, it is characterized in that, described motor control module comprises:
Initialization unit, be used for carrying out initialization setting, On current threshold value and First Speed threshold value, second speed threshold value and the third speed threshold value of setting different conduction modes, described conduction mode comprises following four kinds: each running status is opened four or four conduction modes of four brachium pontis switches at every turn; Each running status is opened three or three conduction modes of three brachium pontis switches at every turn; After the each former running status of described four or four conduction modes, increase four or three conduction modes of only opening the new running status of three brachium pontis switches; And before the each former running status of described four or four conduction modes, increase a new running status of only opening three brachium pontis switches and each former running status and move in advance than the running status of former four or four conduction modes three or four conduction modes of a period of time;
Start unit, while just startup, enters described four or four conduction modes for motor;
The first control unit, for being less than described On current threshold value when motor On current, and motor speed is between described First Speed threshold value and second speed threshold value, enters described four or three conduction modes;
The second control unit, for being less than described On current threshold value when motor On current, and motor speed is between described second speed threshold value and third speed threshold value, enters described three or three conduction modes;
The 3rd control unit, for being less than described On current threshold value when motor On current, and motor speed is greater than described third speed threshold value, enters described three or four conduction modes;
The 4th control unit, for being greater than described On current threshold value when motor On current, enters four or four conduction modes.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210450274.1A CN103812400B (en) | 2012-11-12 | 2012-11-12 | A kind of five-phase brushless DC motor control method and electric motor car |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210450274.1A CN103812400B (en) | 2012-11-12 | 2012-11-12 | A kind of five-phase brushless DC motor control method and electric motor car |
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| CN103812400B CN103812400B (en) | 2016-04-13 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08182290A (en) * | 1994-12-27 | 1996-07-12 | Nippon Seiko Kk | Five-phase brushless motor |
| JP2000228890A (en) * | 1998-12-02 | 2000-08-15 | Denso Corp | Brushless motor |
| CN101420198A (en) * | 2008-12-05 | 2009-04-29 | 广州华南智信微系统有限公司 | Five phase DC brushless motor controller |
| CN101986548A (en) * | 2010-10-29 | 2011-03-16 | 中国电器科学研究院 | Control method for reducing pulsating current of five-phase brushless direct current motor |
-
2012
- 2012-11-12 CN CN201210450274.1A patent/CN103812400B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08182290A (en) * | 1994-12-27 | 1996-07-12 | Nippon Seiko Kk | Five-phase brushless motor |
| JP2000228890A (en) * | 1998-12-02 | 2000-08-15 | Denso Corp | Brushless motor |
| CN101420198A (en) * | 2008-12-05 | 2009-04-29 | 广州华南智信微系统有限公司 | Five phase DC brushless motor controller |
| CN101986548A (en) * | 2010-10-29 | 2011-03-16 | 中国电器科学研究院 | Control method for reducing pulsating current of five-phase brushless direct current motor |
Non-Patent Citations (1)
| Title |
|---|
| 刘国海等: "多相无刷直流电动机系统建模与仿真", 《微特电机》, no. 3, 31 March 2008 (2008-03-31), pages 25 - 28 * |
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|---|---|
| CN103812400B (en) | 2016-04-13 |
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