CN105450009B - Electric pressure converter fault handling method and electric pressure converter - Google Patents
Electric pressure converter fault handling method and electric pressure converter Download PDFInfo
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- CN105450009B CN105450009B CN201610019810.0A CN201610019810A CN105450009B CN 105450009 B CN105450009 B CN 105450009B CN 201610019810 A CN201610019810 A CN 201610019810A CN 105450009 B CN105450009 B CN 105450009B
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
- H02M1/325—Means for protecting converters other than automatic disconnection with means for allowing continuous operation despite a fault, i.e. fault tolerant converters
Abstract
The application provides the fault handling method and electric pressure converter of electric pressure converter.Electric pressure converter includes control circuit and N number of phase.Control circuit controls N number of switch in N number of phase to export N number of electric pulse in the period 1, and the period 1 is made up of N number of continuous subcycle, and the duration that each subcycle has in N number of continuous subcycle is T1/ N, N number of initial time of N number of electric pulse are N number of initial time of N number of continuous subcycle respectively.The control circuit determines the first phase fault.Further, the control circuit controls 1 switch of N of 1 phase of N in addition to first phase in N number of phase, exports 1 electric pulse of N in the second cycle.The second round is made up of 1 continuous subcycle of N, and the duration that each subcycle has in the continuous subcycles of N 1 is T2/ (N 1), 1 initial time of N of 1 electric pulse of N are 1 initial time of N of the continuous subcycles of N 1 respectively.
Description
Technical field
The present invention relates to circuit field, more particularly to electric pressure converter fault handling method and electric pressure converter.
Background technology
Electric pressure converter (English：Voltage converter) it is a kind of device that can carry out voltage conversion.Voltage turns
Parallel operation can be load supplying.Electric pressure converter can include multiple phases (English：Phase), the multiple phase is described negative
Carry power supply.When a phase of the electric pressure converter breaks down, whole electric pressure converter can not normal work.
The content of the invention
The embodiment of the present application provides a kind of electric pressure converter fault handling method and electric pressure converter, in electric pressure converter
Phase when breaking down, failure can be handled.
The technical scheme that the embodiment of the present application provides is as follows：
First aspect, there is provided a kind of electric pressure converter fault handling method, the electric pressure converter include control circuit
And N number of phase, N number of phase include N number of switch, N number of phase corresponds with N number of switch, and N is the integer more than 2,
Methods described includes：
Control circuit control N number of switch exports N number of electric pulse in the period 1.N number of switch and institute
State N number of electric pulse to correspond, the duration that the period 1 has is T1, the period 1 is by N number of continuous subcycle
Form, the duration that each subcycle has in N number of continuous subcycle is T1/ N, during N number of starting of N number of electric pulse
Between be respectively N number of continuous subcycle N number of initial time.
After control circuit control N number of switch exports N number of electric pulse in the period 1, the control
Circuit processed determines the first phase fault.First phase is a phase in N number of phase, and first phase includes first and opened
Close, the first switch is a switch in N number of switch.
After the control circuit determines first phase fault, the control circuit controls the N-1 in N number of switch
Individual switch exports N-1 electric pulse in the second cycle.The N-1 switch corresponds with the N-1 electric pulse, described
N-1 switch does not include the first switch, and the duration that the second round has is T2, the second round is by N-1 company
Continuous subcycle forms, and the duration that each subcycle has in the N-1 continuous subcycles is T2/ (N-1), the N-1
N-1 initial time of individual electric pulse is N-1 initial time of the N-1 continuous subcycles respectively.
By such scheme, after control circuit determines a phase fault in N number of phase of electric pressure converter, the N is set
The initial time for the switch output electric pulse being capable of in individual phase in N-1 phase of normal work, enables the electric pressure converter
Export stable voltage.Therefore, above-mentioned technical proposal can be handled the failure of electric pressure converter so that electric pressure converter
Being capable of normal work.
Optionally, in a kind of example, the control circuit determines the first phase fault, including：The control circuit determines
The value of the average current of first phase；The control circuit obtains the value of N number of average current of N number of phase, N number of phase
Corresponded with N number of average current；It is described N number of average with N number of phase when the value of the average current of first phase
The difference of the average value of the value of electric current, when being worth more than first, the control circuit determines first phase fault.
By the value of the average current of each phase of periodic measurement and determine the value of the average current of each phase whether default
Within the scope of, the control circuit can automatically determine first phase fault in the case where not influenceing system operation.
Optionally, in another example, the control circuit determines the first phase fault, including：The control circuit inspection
It is abnormal to measure the electric pressure converter；The control circuit disconnects first phase according to the result of the detection；The control
Circuit determines, when first phase is in the state disconnected, and N-1 phase is in the state connected, the abnormal disappearance,
The N-1 is mutually the phase in N number of phase in addition to first phase；Feelings of the control circuit based on the abnormal disappearance
Condition, determine first phase fault.
Optionally, after the control circuit determines first phase fault, methods described also includes：The control circuit is broken
Open first phase.
Optionally, in a kind of example, after the control circuit determines first phase fault, and the control electricity
Before N-1 switch in road control N number of switch exports the N-1 electric pulse in the second round, the side
Method also includes：The control circuit disconnects N number of phase；And the control circuit preserves the mark of first phase.It is described
Control circuit controls N-1 switch in N number of switch to export the N-1 electric pulse in the second round, specifically
Including：The control circuit determines N-1 switch in N number of switch according to the mark of first phase；And the control
The N-1 switch that circuit control processed determines according to the mark of first phase exports the N-1 in the second round
Individual electric pulse.
Optionally, in another example, after the control circuit determines first phase fault, and the control
It is described before N-1 switch in circuit control N number of switch exports the N-1 electric pulse in the second round
Method also includes：The control circuit disconnects N number of phase；And the control circuit preserves the mark of N-1 phase, the N-
1 is mutually the phase in N number of phase, and described N-1 does not mutually include first phase.Control circuit control is described N number of to open
The N-1 switch in the Central Shanxi Plain exports the N-1 electric pulse in the second round, specifically includes：The control circuit according to
The mark of the N-1 phase, determine N-1 switch in N number of switch；And the control circuit control is according to the N-
The N-1 switch that the mark of 1 phase determines exports N-1 electric pulse in the second cycle.
By preserving the mark of first phase, or the mark of the N-1 phase is preserved, the control circuit disconnects
When N number of switch and again starting switch, the N-1 phase is directly initiated, enables the electric pressure converter normal work.
Second aspect, there is provided a kind of electric pressure converter, the electric pressure converter include control unit, detection unit and
N number of phase, N number of phase include N number of switch, and N number of phase corresponds with N number of switch, and N is the integer more than 2.
Described control unit, for controlling N number of switch to export N number of electric pulse, N number of switch in the period 1
Corresponded with N number of electric pulse, the duration that the period 1 has is T1, and the period 1 is by N number of continuous son
Cycle forms, and the duration that each subcycle has in N number of continuous subcycle is T1/ N, N number of of N number of electric pulse
Time beginning is N number of initial time of N number of continuous subcycle respectively.
The detection unit, for exporting institute in the period 1 in described control unit control N number of switch
After stating N number of electric pulse, the first phase fault is determined, first phase is a phase in N number of phase, and first phase includes
First switch, the first switch are a switches in N number of switch.
Described control unit is additionally operable to, and after the detection unit determines first phase fault, control is described N number of to open
The N-1 switch in the Central Shanxi Plain exports N-1 electric pulse in the second cycle, and the N-1 switch and the N-1 electric pulse are one by one
Corresponding, the N-1 switch does not include the first switch, and the duration that the second round has is T2, the second round
It is made up of N-1 continuous subcycles, the duration that each subcycle has in the N-1 continuous subcycles is T2/(N-
1), N-1 initial time of the N-1 electric pulse is N-1 initial time of the N-1 continuous subcycles respectively.
The scheme of the program and first aspect has identical technique effect.
Optionally, in a kind of example, the detection unit is specifically used for：Determine the average current of first phase
Value；The value of N number of average current of N number of phase is obtained, N number of phase and the value of N number of average current correspond；Work as institute
The value of the average current of the first phase, and the difference of the average value of the value of N number of average current of N number of phase are stated, more than first
During value, first phase fault is determined.
Optionally, in another example, the detection unit is specifically used for：Detect that the electric pressure converter is abnormal；
According to the result of the detection, first phase is disconnected；It is determined that when first phase is in the state disconnected, and N-1 phase
During state in connection, the abnormal disappearance, the N-1 are mutually phases in N number of phase in addition to first phase；With
And the situation based on the abnormal disappearance, determine first phase fault.
Optionally, described control unit is additionally operable to after the detection unit determines first phase fault：Described in disconnection
First phase.
Optionally, in a kind of example, after the detection unit determines first phase fault, and the control N
Before N-1 switch in individual switch exports the N-1 electric pulse in the second round, it is additionally operable to：Disconnect described N number of
Phase；And preserve the mark of first phase.Described control unit controls N-1 in N number of switch to switch described the
The N-1 electric pulse is exported in two cycles, is specifically included：According to the mark of first phase, determine in N number of switch
N-1 switch；And the N-1 switch that control determines according to the mark of first phase exports in the second round
The N-1 electric pulse.
Optionally, in another example, described control unit the detection unit determine first phase fault it
Afterwards, before N-1 switch and in control N number of switch exports the N-1 electric pulse in the second round, also
For：Disconnect N number of phase；And preserving the mark of N-1 phase, it is mutually phase in N number of phase that the N-1 is individual, the N-1
Individual phase does not include first phase.Described control unit controls N-1 switch in N number of switch in the second round
The N-1 electric pulse is exported, is specifically included：According to the mark of the N-1 phase, determine that the N-1 in N number of switch are opened
Close；And the N-1 switch that control determines according to the mark of the N-1 phase exports N-1 electric arteries and veins in the second cycle
Punching.
The third aspect, there is provided a kind of electric pressure converter, the electric pressure converter include processor, memory and N number of
Phase, the processor couple with the memory, the processor with it is described it is N number of be coupled, N number of phase includes N number of switch,
N number of phase corresponds with N number of switch, and N is the integer more than 2.
The memory is used to store computer program.The processor is used to, by accessing the computer program, hold
Row is following to be operated：
N number of switch is controlled to export N number of electric pulse, N number of switch and N number of electric pulse one in the period 1
One correspondence, the duration that the period 1 has are T1, and the period 1 is made up of N number of continuous subcycle, N number of company
The duration that each subcycle has in continuous subcycle is T1/ N, N number of initial time of N number of electric pulse is the N respectively
N number of initial time of individual continuous subcycle；
After N number of switch exports N number of electric pulse in the period 1, the first phase fault is determined, described the
One phase is a phase in N number of phase, and first phase includes first switch, and the first switch is N number of switch
In one switch；And
After determining first phase fault, N-1 switch in N number of switch is controlled to export N- in the second cycle
1 electric pulse, the N-1 switch correspond with the N-1 electric pulse, and the N-1 switch does not include described first
Switch, the duration that the second round has is T2, the second round is made up of the continuous subcycles of N-1, the N-1
The duration that each subcycle has in continuous subcycle is T2/ (N-1), the N-1 initial time point of the N-1 electric pulse
It is not N-1 initial time of the N-1 continuous subcycles.
The scheme of the program and first aspect has identical technique effect.
Optionally, in a kind of example, the computing device determines the first phase fault, specifically includes：Determine described
The value of the average current of one phase；Determine the value of N number of average current of N number of phase, N number of phase and N number of average current
Value correspond；It is flat with the value of N number of average current of N number of phase when the value of the average current of first phase
The difference of average, when being worth more than first, determine first phase fault.
Optionally, in another example, the computing device determines the first phase fault, specifically includes：Detect institute
State electric pressure converter exception；According to the result of the detection, first phase is disconnected；It is determined that when first phase is in what is disconnected
State, and during the N-1 state mutually in connection, the abnormal disappearance, the N-1 are mutually except described in N number of phase
Phase outside first phase；And the situation based on the abnormal disappearance, determine first phase fault.
Optionally, the processor reads the computer program, further performs：It is determined that first phase fault
Afterwards, first phase is disconnected.
Optionally, in a kind of example, the processor is it is determined that after first phase fault, and the control N
Before N-1 switch in individual switch exports the N-1 electric pulse in the second round, also perform：Disconnect described N number of
Phase；And preserve the mark of first phase.N-1 switch in control N number of switch is in the second round
The N-1 electric pulse is exported, is specifically included：According to the mark of first phase, determine that the N-1 in N number of switch are opened
Close；And the N-1 switch that control determines according to the mark of first phase exports the N-1 in the second round
Individual electric pulse.
Optionally, in another example, after the processor determines first phase fault, and the control N
Before N-1 switch in individual switch exports the N-1 electric pulse in the second round, also perform：Disconnect described N number of
Phase；And the mark of N-1 phase is preserved, the N-1 is mutually the phase in N number of phase, and the N-1 phase is including described the
One phase.N-1 switch in control N number of switch exports the N-1 electric pulse in the second round, specifically
Including：According to the mark of the N-1 phase, N-1 switch in N number of switch is determined；And the control circuit control
The N-1 switch determined according to the mark of the N-1 phase exports N-1 electric pulse in the second cycle.
Based on above-mentioned in a first aspect, either side in second aspect or the third aspect, optionally, N number of electric pulse
In the duration of each electric pulse be T3, the duration of each electric pulse in the N-1 electric pulse is T4, the T3Equal to institute
State T4, the T1Equal to the T2。
Based on above-mentioned in a first aspect, either side in second aspect or the third aspect, optionally, the electric pressure converter
It is DC-DC converter (English：DC to DC converter).
Based on above-mentioned in a first aspect, either side in second aspect or the third aspect, optionally, the electric pressure converter
It is buck converter (English：buck converter).
Based on above-mentioned in a first aspect, either side in second aspect or the third aspect, optionally, the electric pressure converter
It is VRM Voltage Regulator Module (English：Voltage regulator module, referred to as：VRM).
Brief description of the drawings
In order to illustrate more clearly of the technical scheme of the embodiment of the present application, the accompanying drawing being related to embodiment is made into a letter below
Singly introduce.It should be evident that following accompanying drawing is some embodiments of the present invention.Come for those of ordinary skill in the art
Say, without having to pay creative labor, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of application scenarios schematic diagram that the embodiment of the present application provides.
Fig. 2 is a kind of electric pressure converter fault handling method flow chart that the embodiment of the present application provides.
Fig. 3 is a kind of structural representation for control circuit that the embodiment of the present application provides.
Fig. 4 is a kind of waveform diagram for electric pulse that the embodiment of the present application provides.
Fig. 5 is a kind of waveform diagram for electric pulse that the embodiment of the present application provides.
Fig. 6 is a kind of structural representation for electric pressure converter that the embodiment of the present application provides.
Embodiment
In the embodiment of the present application " first ", " second " and " the 3rd ", it is only used for distinguishing different objects.It is not used in restriction
The order of different objects.For example, first switch, second switch and the 3rd switch are referred in embodiment.First switch and the
Two switches are not same switches.Second switch and the 3rd switch are not same switches.First switch switchs with the 3rd
Same switch.
Fig. 1 is a kind of application scenarios schematic diagram that the embodiment of the present application provides.In system as shown in Figure 1, including voltage
Converter 110 and load 120.Electric pressure converter 110 includes control circuit 111 and three phases.First phase 112 is opened including first
Close 115 and the inductance L1 coupled with the first switch 115.Second phase 113 include second switch 116 and with the second switch
The inductance L2 of 116 couplings.Third phase 114 includes the 3rd switch 117 and the inductance L3 coupled with the described 3rd switch 117.In Fig. 1
Shown A points, C points and E points is first switch 115 respectively, and second switch 116 and the 3rd switchs 117 output end.Institute
Electric pressure converter 110 is stated normally to during the power supply of load 120, and first switch 115, second switch 116 and the 3rd switchs 117
Respectively in its corresponding output end periodically output electric pulse.First switch 115, the switch of second switch 116 and the 3rd 117
The initial time of the electric pulse of output is typically equally distributed in one cycle.B points, D points and F points are described respectively
The output end of one phase 112, second phase 113 and the third phase 114.Between the output end of each phase and load 120, also
Including electric capacity C1.First switch 115, the electric pulse of the output of the switch of second switch 116 and the 3rd 117 pass through inductance and electric capacity
After C1 processing, load 120 is reached.So as to which electric pressure converter 110 can provide stable DC voltage to the load 120.
For example, the electric pressure converter 110 can be direct current (English：Direct current, referred to as：DC) turn straight
Stream transformer (English：DC to DC converter).DC to DC converter can will input the DC to DC
Converter the first DC voltage is converted into the second DC voltage, and exports second DC voltage, for example, to load
The DC voltage of 120 output second amplitudes.The electricity of the magnitude of voltage of first DC voltage and second DC voltage
Pressure value is different.
For example, the electric pressure converter 110 can use multiphase (English：Multi-phase) VRM Voltage Regulator Module
(English：Voltage regulator module, referred to as：VRM) realize.VRM can be for central processing unit (English：
Central processing unit, referred to as：CPU) buck converter (the English of power supply：buck converter).VRM can
So that the first DC voltage of the VRM will be inputted, the second DC voltage needed for CPU is adjusted to.First DC voltage
Magnitude of voltage is more than the magnitude of voltage of second DC voltage.For example, the magnitude of voltage of the first voltage can be 5V or 12V.Fig. 1
Shown in first switch 115, the switch of second switch 116 and the 3rd 117 may be respectively used for realizing multiple phases in the VRM
The output of position.For example, pulse width modulation (the English in the VRM and the embodiment of the present application：pulse width
Module, referred to as：PWM) the specific implementation of module, it may refer to the VR12/IMVP7 arteries and veins of Intel company's in June, 2010 issue
Rush width modulated specification (English：VR12/IMVP7Pulse Width Modulation Specification).
When a phase in electric pressure converter 110, such as during first phase 112 failure, the nothing of electric pressure converter 110
Method is normally to the power supply of load 120.For example, in a cycle, if the normal work of electric pressure converter 110, first switch 115
The first electric pulse is exported in the first preset time, second switch 116 exports the second electric pulse, the 3rd switch in the second preset time
117 export the 3rd electric pulse in the 3rd preset time.When the first phase 112 breaks down, first switch 115 is possibly can not be in institute
State the first preset time and export first electric pulse.That is, a cycle may only have two electric pulses.And two
Electric pulse is not equally distributed in one cycle.The voltage of electric pressure converter output is jiggly voltage.Therefore, electricity is worked as
One in pressure converter 110 when mutually breaking down, electric pressure converter 110 can not be normally to the power supply of load 120.
Fig. 2 is a kind of electric pressure converter fault detection method flow chart that the embodiment of the present application provides.Method shown in Fig. 2
It can be used in Fig. 1 circuit structure, so as to realize the function of control circuit in Fig. 1.For example, when some in Fig. 1 mutually goes out
During existing failure, the method shown in Fig. 2 can be used to handle the failure.The voltage in method shown in Fig. 2 turns
Parallel operation includes control circuit and N number of phase, and N number of phase includes N number of switch, a pair of N number of phase and the N number of switch 1
Should, N is the integer more than 2.
Methods described includes S201, S202 and S203.
S201, control circuit control N number of switch export N number of electric pulse in the period 1.
N number of switch corresponds with N number of electric pulse, and the duration that the period 1 has is T1, described
One cycle was made up of N number of continuous subcycle, and the duration that each subcycle has in N number of continuous subcycle is T1/ N,
N number of initial time of N number of electric pulse is N number of initial time of N number of continuous subcycle respectively.
Specifically, N number of electric pulse corresponds with N number of initial time.Each electricity in N number of electric pulse
Pulse has an initial time.N number of initial time of N number of electric pulse is the N number of of N number of continuous subcycle respectively
Initial time.
S202, after control circuit control N number of switch exports N number of electric pulse in the period 1,
The control circuit determines the first phase fault.
First phase is a phase in N number of phase, and first phase includes first switch, the first switch
It is a switch in N number of switch.
S203, after the control circuit determines first phase fault, the control circuit is controlled in N number of switch
N-1 switch in the second cycle export N-1 electric pulse.
The N-1 switch is corresponded with the N-1 electric pulse, and the N-1 switch is not opened including described first
Close, the duration that the second round has is T2, the second round is made up of the continuous subcycles of N-1, the N-1 company
The duration that each subcycle has in continuous subcycle is T2/ (N-1), the N-1 initial time difference of the N-1 electric pulse
It is N-1 initial time of the N-1 continuous subcycles.
Specifically, the N-1 electric pulse corresponds with the N-1 initial time.It is every in N number of electric pulse
Individual electric pulse has an initial time.N number of initial time of the N-1 electric pulse is the N-1 continuous sons respectively
The N-1 initial time in cycle.
N number of continuous subcycle in the application refers in N number of continuous subcycle a subcycle in adjacent subcycle
End time be equal to another subcycle at the beginning of between.For example, N number of continuous subcycle includes the first subcycle, second
Subcycle and the 3rd subcycle.First subcycle and the second subcycle are adjacent subcycles.Second subcycle and the 3rd son
Cycle is adjacent subcycle.First subcycle is prior to the second subcycle.Second subcycle is prior to the 3rd subcycle.Period 1
End time be equal to the second subcycle at the beginning of between.At the beginning of the end time of second round is equal to the 3rd subcycle
Between.
Similarly, the N-1 in the application continuous subcycles refer in N-1 continuous subcycles one in adjacent subcycle
Between the end time of individual subcycle is equal at the beginning of another subcycle.
The control circuit that control circuit 111 in Fig. 1 can be used for realizing in the method shown in Fig. 2.First in Fig. 1 opens
115 are closed, second switch 116 and the 3rd switchs 117, the N number of switch that can be used for realizing in the method shown in Fig. 2.N be more than
2 integer.N in Fig. 1 is equal to 3.Certainly, more switches can also be included in Fig. 1, so as to realize in the method shown in Fig. 2,
N can be the scene more than 3.Hereafter only the method shown in Fig. 2 is illustrated so that the N shown in Fig. 1 is equal to 3 as an example.Figure
First phase 112 in 1, second phase 113 and the third phase 114, can be used for realizing in the method described in Fig. 2
N number of phase.
Fig. 3 is a kind of structural representation for control circuit that embodiment provides.Control circuit 300 in Fig. 3 can be used for
Perform the method described in Fig. 2.Specifically, control circuit 300 can be used for realizing the control circuit in the method shown in Fig. 2.
The control circuit 300 can be used for realizing the control circuit 111 shown in Fig. 1.As shown in figure 3, control circuit 300 includes failure
Control module 310, phase control module 320, the first PWM module 330, the second PWM module 340 and the 3rd PWM module 350.
The FCM fault control module 310, phase control module 320, the first PWM module 330, the second PWM module 340 and the 3rd PWM
Module 350 passes through bus communication.For example, the bus can be power management bus (English：power management
Bus, referred to as：PMBus).Certainly, the controller 300 shown in Fig. 3 can include more PWM modules, so as to realize shown in Fig. 2
Method in, N is scene more than 3.Optionally, the control circuit 300 also includes current detection module 360.For example, control
Above-mentioned module in circuit 300 can be by application specific integrated circuit (English：application-specific integrated
Circuit, referred to as：ASIC) realize.
For example, first PWM module 330 in control circuit 300 can be with the first switch shown in Fig. 1
115 couplings, so as to control the first switch 115.Second PWM module 340 can be with the second switch shown in Fig. 1
116 couplings, so as to control the second switch 116.3rd PWM module 350 can be with the 3rd switch shown in Fig. 1
117 couplings, so as to control the 3rd switch 117.
Control signal is periodically sent to the first switch 115 with the first PWM module 330 below, so as to control
First switch 115 is stated periodically exemplified by output electric pulse, to the first switch 115, second switch 116 and the 3rd switchs
The principle of 117 output electric pulses illustrates.
For example, the first switch 115 can use a P-channel metal-oxide-semiconductor (English：
Positive channel metal oxide semiconductor, referred to as：) and N-channel metal oxide half PMOS
Conductor (English：Negative channel metal oxide semiconductor, referred to as：NMOS the switch) being composed in series
Pipe is realized.The drain electrode of the PMOS and the input voltage from electric pressure converter 110 described in the outside input of electric pressure converter 110
(hereinafter referred to as Vin) is coupled, and the source electrode of the PMOS couples with the drain electrode of the NMOS, institute in the source electrode and Fig. 1 of the NMOS
The ground wire coupling shown.First PWM330 by the NMOS and the PMOS grid, sending control signal, controlling respectively
Make the state of the first switch.For example, work as the first PWM330 sends the first low level signal to the NMOS, to the PMOS
Grid send the second low level signal when, the first switch 115 is in state 1.I.e. described PMOS conductings, the NMOS is not
Conducting.When the first switch 115 is in state 1, first switch 115 is in A point output electric pulses.The magnitude of voltage of the electric pulse
With the VinMagnitude of voltage it is equal.When the first PWM330 to the NMOS send the first high level signal, to the PMOS
Grid send the second high level signal when, the first switch 115 is in state 2.I.e. described NMOS conductings, the PMOS is not
Conducting.When the first switch 115 is in state 2, first switch 115 does not have output electric pulse in A points.The first switch
The magnitude of voltage of 115 A points when being in state 2 is equal with the magnitude of voltage of ground wire.For example, the magnitude of voltage of the ground wire can be equal to 0V.
When the first PWM330 sends the first intermediate level signal to the NMOS, it is electric to send the second centre to the grid of the PMOS
During ordinary mail, the first switch 115 is in state 3.I.e. described PMOS is not turned on, and the NMOS is not turned on, first phase
112 in the state disconnected.When the first switch 115 is in state 3, the first switch 115 does not export electric arteries and veins in A points
Punching.High level signal, intermediate level signal and low level signal are relative concepts.Specifically, PWM module is to same
The level for the high level signal that MOS is sent is higher than the level of intermediate level signal.The centre that PWM module is sent to same MOS
The level of level signal is higher than the level of low level signal.It will be appreciated by persons skilled in the art that first high level
It is signal, second high level signal, the first intermediate level signal, the second intermediate level signal, described first low
The magnitude of voltage of level signal and second low level signal, can be according to the NMOS and the PMOS conducting voltage
Choose.
Switch in the application refers to, defeated in the period 1 or the second round under the control of control circuit
Go out the circuit of an electric pulse.For example, when above-mentioned first switch 115 is by two MOS, i.e. when PMOS and NMOS are realized, one
PMOS and NMOS forms a switch in first phase.The state of switch can be one kind in following three kinds.Shape
State 1, the output end and V of the switchinCoupling, the magnitude of voltage of the switch output is equal with the magnitude of voltage of the Vin, i.e., described
Switch is in its output end output electric pulse；State 2, the output end of the switch couple with ground wire, the voltage of the switch output
Value is equal with the magnitude of voltage of the ground wire, such as the magnitude of voltage is 0V, and the switch does not have output electric pulse in its output end；
State 3, the output end of the switch and the VinAnd the ground wire disconnects, the switch does not export electricity in its output end
Pulse.
For example, first PWM module 330 sends control signal to the first switch 115, can be described the
One PWM module 330 directly sends control signal to the first switch 115.Can also be, in the He of the first PWM module 330
Include drive circuit between the first switch 115.First PWM module 330 sends control signals to the driving electricity
Road.The control signal is amplified in the driving, and the control signal after amplification is sent into the first switch 115.
For example, in the electric pressure converter 110 to during the power supply of load 120, first PWM module 330 is periodically
The transmission high level signal and the low level signal.Correspondingly, the period of state of the first switch 115 in institute
State and switch between state 1 and the state 2.When the first switch 115 is in state 1, the first switch is in the A points
Output electric pulse.
For example, the second switch 116 exists in C points periodically output electric pulse, and the 3rd switch 117
E points periodically output electric pulse, it can use with the first switch 115 in A point output electric pulse identical implementations
Realize.
For example, first PWM module 330, second PWM module 340 and the 3rd PWM module 350
It can be realized by signal generator.
For example, the first switch 115 in first phase 112, second switch 116 in second phase 113 with
And the 3rd switch 117 in the third phase 114, the initial time of output electric pulse is different in one cycle.Described three
The initial time for switching three electric pulses of output is equally distributed in a cycle.
For example, Fig. 4 was shown in the period 1 described in S201, the electric pulse that first switch 115 exports in A points,
The electric pulse that second switch 116 exports in C points, and the 3rd switch 117 E point output electric pulses waveform it is a kind of possible
Implementation.The period 1 is by the first subcycle, the second subcycle and the 3rd subcycle composition.The period 1
Shi Changwei T1.Assuming that the initial time of the period 1 is 0.The end time of the period 1 is T1.The first son week
The initial time of phase is 0, end time T1/3.The initial time of second subcycle is T1/ 3, the end time is 2T1/
3.The initial time of 3rd subcycle is 2T1/ 3, the end time is T1.The first switch 115, second switch 116 and
The duration for the electric pulse that 3rd switch 117 exports in the period 1 is T3.The first switch 115, second switch
116 and the 3rd each switch in switch 117 not when a length of T of output electric pulse in the period 11-T3.Described
In period 1, when switching output electric pulse, the switch is in the state 1.In the period 1, when switch not
During output electric pulse, the switch is in the state 2, and the amplitude of the voltage of output can be 0V.Those skilled in the art can
With understanding, switch when being switched to the state 2 by the state 1, the switch exports the rising edge of the electric pulse, institute
Switch is stated when being switched to the state 1 by the state 2, the switch exports the trailing edge of the electric pulse.The rising edge
The duration having is much smaller than the T3, the duration that the trailing edge has is much smaller than the T3。
For example, each phase in the electric pressure converter 110 is the virtual voltage of the power supply of load 120, is this
The average value of the magnitude of voltage for the switch output that phase includes in time.For example, in first phase 112, in the period 1
Interior, the first switch 112 is equal to the V in the magnitude of voltage that A points exportinThe duration of electric pulse of magnitude of voltage be T3, output
Magnitude of voltage is that 0V duration is T1-T3.The low pass filter that the voltage of A points is formed by the L1 shown in Fig. 1 and C1, is carried in negative
It is for (V to carry the magnitude of voltage on 120in*T3)/T1.Similarly, in second phase 113 and the third phase 114, it is carried in negative
The magnitude of voltage carried on 120 is also (Vin*T3)/T1。
For example, first switch 115, second switch 116 and the 3rd switch 117 in the period 1 shown in Fig. 4,
The initial time of output electric pulse is different.Said process can be as shown in Figure 3 phase control module 320 to the first PWM
Module 330, second PWM module 340 and the 3rd PWM module 350 send different clock signals and realized respectively.Institute
It is identical to state the clock frequency for the clock signal that phase control module 320 is sent to above-mentioned PWM module, the phase control module
The phase of 320 clock signals sent to above-mentioned PWM module is different.For example, the phase control module 320 is to above-mentioned PWM moulds
It is different along the corresponding time in the clock signal that block is sent.First PWM module 330, the second PWM module 340 and the 3rd
PWM module 350 receives the clock signal of the phase control module 320 respectively.The clock signal of each PWM module in reception
On along the corresponding time export low level signal, the switch coupled with the PWM module enters the state 1.Clock signal
On along the corresponding time be PWM module output low level signal at the beginning of between.Each PWM module exports the low level signal
Duration be T3, T3Time span by it is described load 120 needed for magnitude of voltage determine.Duration T3Afterwards, the PWM
The control signal of module output is changed into high level signal from the low level signal, and the switch coupled with the PWM module enters
The state 2.
Optionally, in a kind of example, control circuit described in S202 determines the failure of the first phase 112, including：It is described
Control circuit determines the value of the average current of first phase 112.The control circuit obtains N number of average electricity of N number of phase
The value of stream, N number of phase and the value of N number of average current correspond.When the value of the average current of first phase 112,
And the difference of the average value of the value of N number of average current of N number of phase, when being worth more than first, the control circuit determines institute
State the failure of the first phase 112.
Accordingly, the control circuit 300 shown in Fig. 3 includes current detection module 360.In the electric pressure converter 110
First phase 112, in second phase 113 and the third phase 114, respectively including a current sensing means (Fig. 1
Not shown in).The current sensing means is used for the average current for measuring each phase in three phases.The average current is
Refer to, in detection cycle, the average value of electric current.In a kind of example, the current sensing means measures the L1's shown in Fig. 1
Average current of the average current as first phase 112, the average current of the L2 shown in measurement Fig. 1 is as second phase
113 average current, measure average current of the average current as the third phase 114 of the L3 shown in Fig. 1.Show in another kind
In example, the first switch 115, the second switch 116 and the 3rd switch 117 are respectively by the PMOS and the NMOS
The switching tube being composed in series is realized.The current sensing means 360 measures being averaged between the nmos source and drain electrode respectively
Voltage.The NMOS has spy respectively in the state of high level signal is received, and in the state of low level signal is received
Fixed resistance value.Therefore, the duration turned on according to the NMOS, such as the T1-T3, and the duration that the NMOS is not turned on,
Such as the T1, the current sensing means 360 can calculate the average resistance of the NMOS.Further, the electricity
Flow detection device 360 average resistance and the NMOS average voltage according to NMOS, calculate the NMOS places
Phase average current.
For example, the current detection module 360 determines the average current of each phase of current sensing means measurement
Value, calculate the average value of the value of the average current of three phases.The current detection module 360 passes through comparator, difference
Whether the difference for comparing the average value of the value of the average current of each phase and the value of the average current of three phases is more than described the
One value.First value is value set in advance.First value is allowed when can be the electric pressure converter normal work
Average current value fluctuation maximum.For example, first value is the average value of the value of N number of average current
10%.If the difference of the average value of the value of the average current of first phase 112 and the value of 3 average currents exceedes described
First value, the current detection module 360 determine the failure of the first phase 112.Further, the current detection module 360
The mark of first phase 112 is sent to the FCM fault control module 310, and the phase control module 320.
For example, in another example, control circuit described in S202 determines the failure of the first phase 112, including：
The control circuit detects that the electric pressure converter is abnormal.The control circuit is according to the result of the detection, described in disconnection
First phase 112.The control circuit 111 determines that when state of first phase 112 in disconnection, and N-1 phase is in and connect
During logical state, the abnormal disappearance, the N-1 are mutually phases in N number of phase in addition to first phase.The control
Situation of the circuit based on the abnormal disappearance, determine the failure of the first phase 112.
In the application, mutually in the state disconnected, the switch that referring to this mutually includes is in the state 3 for some.It is described to open
The output end and V of passinBetween disconnect, output end and the ground wire of the switch are disconnected.Some in the state connected, is mutually
Refer to the state for the switch mutually included, the state 1 and the state 2 replace.Export electric arteries and veins to the switch periods
Punching.
For example, also include abnormality detection module (not shown in Fig. 3) in the control circuit 300, it is described negative for detecting
Carry the voltage at 120 both ends.When the voltage at 120 both ends of the load in some time or some duration is more than second value, the control
Circuit processed determines that the electric pressure converter is abnormal.For example, the failure of the first phase 112 is some member in first phase 112
Shorted devices.For example, short circuit occurs for the inductance in first phase 112 or first switch.The short circuit of first phase 112 is made
Abnormal into the electric pressure converter 110 is that the voltage for loading 120 both ends is more than the second value.The control circuit 300
After determining the exception of electric pressure converter 110, according to the situation that the electric pressure converter 110 is abnormal, first phase is disconnected
112, the second phase 113 and third phase 114.Afterwards, the control circuit 300 is disconnected described in Fig. 1 according to the instruction of configuration
One phase 112, a certain item in second phase 113 and the third phase 114, and control corresponding in two other phase
The output electric pulse of switch periods.The control circuit 300 is detected after a certain item is disconnected, and whether the exception
Disappear.For example, the abnormal disappearance refers to, the voltage at 120 both ends of the load is no more than the 3rd value.3rd value is small
In the second value.If first phase 112 is in the state disconnected, and second phase 113 and the third phase
114 in connect states, the abnormal disappearance, then the abnormality detection module determine that the failure of the first phase 112 result in
The abnormal situation of the electric pressure converter 110.Further, the abnormality detection module sends out the mark of first phase 112
Give the FCM fault control module 310, and the phase control module 320.
Optionally, in a kind of example, also include after S202 and before S203, the control circuit 300 disconnects institute
State the first phase 112.
For example, control circuit 300 disconnects the FCM fault control module 310 that first phase 112 can be as shown in Figure 3 and controlled
First PWM module 330 is made to realize.Output in first PWM module 330 is arranged to high resistant by FCM fault control module 310
State (English：High impedance) so that first PWM module 330 and no longer periodically export the low level
Signal or the high level signal.Further, the output end of first PWM module is also connected with intermediate level output module,
The intermediate level output module can be by being connected to VinDivider resistance between ground wire is realized.First PWM module to
The first switch exports intermediate level, the PMOS and the NMOS of the first switch is not turned on.I.e. described
When one switch is in described state 3, first phase 112 is disconnected.
Optionally, in another example, also include after S302 and before S303, described in the control circuit disconnection
N number of phase.The control circuit preserves the mark of first phase 112, or the control circuit preserves the mark of N-1 phase.
The N-1 are mutually the phases in N number of phase, and described N-1 does not mutually include first phase 112.
For example, the mark of first phase 112, or the mark of the N-1 phase, are stored in control circuit
In 300 register (not shown in Fig. 3).The register can be located at phase control module 320 and Fault Control mould respectively
In block 310, it can also be located in control circuit 300.Phase control module 320 and FCM fault control module 310 communication can
Pass through register described in bus access.
Fig. 5 is shown in S203, in the second round, electric pulse that the second switch 116 exports in C points, and
A kind of possible implementation of 3rd switch, 117 waveform in E point output electric pulses.In the present embodiment, the N is equal to
3, N-1 are equal to 2.The second round is made up of the 4th subcycle and the 5th subcycle.When a length of T of the second round2。
Assuming that the initial time of the second round is 0.The end time of the second round is T2.The starting of 4th subcycle
Time is 0, end time T2/2.The initial time of 5th subcycle is T2/ 2, end time T2.Second switch 116
And the 3rd switch 117 in the second round, the duration for exporting the electric pulse is T4.Second switch 116 and
Each switch in three switches 117 not when a length of T of output electric pulse in the second round2-T4。
Optionally, the T3Equal to the T4, and the T1Equal to the T2。
Optionally, if also including the control circuit after S202 and before S203 disconnects N number of phase, Yi Jisuo
The mark that control circuit preserves first phase 112 is stated, then S203 includes mark of the control circuit according to first phase 112
Know, determine N-1 switch in N number of switch.S203 includes control circuit control described in the control circuit according to
The N-1 switch that the mark of first phase 112 determines exports N-1 electric pulse in the second cycle.
Specifically, N number of switch of the electric pressure converter corresponds with N number of phase.According to the mark of first phase 112
Know and determine that the N-1 switch refers to, determine in N number of switch, N-1 switch outside the first switch.
Optionally, if also including the control circuit after S202 and before S203 disconnects N number of phase, Yi Jisuo
Stating the mark that control circuit preserves the N-1 phase, then S203 includes mark of the control circuit according to the N-1 phase,
Determine N-1 switch in N number of switch.S203 includes control circuit control described in the control circuit according to the N-1
The N-1 switch that the mark of individual phase determines exports N-1 electric pulse in the second cycle.
Specifically, N number of switch of the electric pressure converter corresponds with N number of phase.According to the mark of the N-1 phase
Determine that the N-1 switch refers to, determine the N-1 switch that the N-1 phase includes.
Fig. 6 is a kind of structural representation for electric pressure converter that the embodiment of the present application provides.The electric pressure converter 600 wraps
Control unit 601, detection unit 602 and N number of phase 603 are included, N number of phase 603 includes N number of switch (not shown in Fig. 6), institute
State N number of phase 603 to correspond with N number of switch, N is the integer more than 2.For example, the electric pressure converter 600 can be with
Realized using the electric pressure converter 110 shown in Fig. 1.Such as control unit 601 and detection unit 602 can be used shown in Fig. 1
Control circuit 111 realize.When N be equal to 3 when, N number of phase 603 can use Fig. 1 shown in the first phase 112, the second phase 113 and
Third phase 114 is realized.
Referring to Fig. 6, electric pressure converter 600 can be used for performing the method shown in Fig. 2.Control in electric pressure converter 600
Unit 601 and detection unit 602 can use the control circuit 300 in Fig. 3 to realize.
Described control unit 601, it is described N number of for controlling N number of switch to export N number of electric pulse in the period 1
Switch corresponds with N number of electric pulse.The duration that the period 1 has is T1, the period 1 is by N number of continuous
Subcycle composition, the duration that each subcycle has in N number of continuous subcycle is T1/ N, the N of N number of electric pulse
Individual initial time is N number of initial time of N number of continuous subcycle respectively.
Specifically, N number of electric pulse corresponds with N number of initial time.Each electricity in N number of electric pulse
Pulse has an initial time.N number of initial time of N number of electric pulse is the N number of of N number of continuous subcycle respectively
Initial time.
For example, described control unit 601 can be used for performing the S201 shown in Fig. 2.
The detection unit 602, for controlling N number of switch in the period 1 in described control unit 601
After exporting N number of electric pulse, the first phase fault is determined.First phase is a phase in N number of phase 603, described
One phase includes first switch, and the first switch is a switch in N number of switch.
For example, the detection unit 602 can be used for performing the S202 shown in Fig. 2.
Described control unit 601 is additionally operable to, and after the detection unit 602 determines first phase fault, controls institute
State N-1 switch in N number of switch and export N-1 electric pulse, the N-1 switch and described N-1 electricity in the second cycle
Pulse corresponds.The N-1 switch does not include the first switch, and the duration that the second round has is T2, it is described
Second round is made up of N-1 continuous subcycles, and the duration that each subcycle has in the N-1 continuous subcycles is
T2/ (N-1), N-1 initial time of the N-1 electric pulse are N-1 starting of the N-1 continuous subcycles respectively
Time.
Specifically, the N-1 electric pulse corresponds with the N-1 initial time.It is every in N number of electric pulse
Individual electric pulse has an initial time.N number of initial time of the N-1 electric pulse is the N-1 continuous sons respectively
The N-1 initial time in cycle.
For example, described control unit 601 can be also used for performing S203 shown in Fig. 2.
Above-mentioned unit can be realized by pure hardware, can also be implemented in combination with by hardware and software.For example,
The computer program that CPU is stored by performing in memory, so as to realize above-mentioned unit.
For example, in a kind of example, the detection unit 602 is specifically used for：Determine the average electricity of first phase
The value of stream；The value of N number of average current of N number of phase is obtained, N number of phase and the value of N number of average current correspond；
And the value of the average current when first phase, and the difference of the average value of the value of N number of average current of N number of phase,
During more than the first value, the failure of the first phase 112 is determined.
For example, in another example, the detection unit 602 is specifically used for：Detect the electric pressure converter
It is abnormal；According to the result of the detection, first phase is disconnected；It is determined that when first phase is in the state disconnected, and N-1
When individual phase is in the state connected, the abnormal disappearance, the N-1 be mutually in N number of phase in addition to first phase
Phase；And the situation based on the abnormal disappearance, determine first phase fault.
Optionally, described control unit 601 is additionally operable to after the detection unit determines first phase fault：Disconnect
First phase.
Optionally, in a kind of example, described control unit 601 the detection unit determine first phase fault it
Afterwards, before N-1 switch and in control N number of switch exports the N-1 electric pulse in the second round, also
For：Disconnect N number of phase 603；And preserve the mark of first phase.Described control unit is controlled in N number of switch
N-1 switch the N-1 electric pulse is exported in the second round, specifically include：According to the mark of first phase,
Determine N-1 switch in N number of switch；And the N-1 switch that control determines according to the mark of first phase
The N-1 electric pulse is exported in the second round.
Optionally, in another example, described control unit 601 determines first phase fault in the detection unit
Afterwards, before N-1 switch and in control N number of switch exports the N-1 electric pulse in the second round,
It is additionally operable to：Disconnect N number of phase 603；And the mark of the N-1 phase is preserved, the N-1 are mutually in N number of phase 603
Phase, it is described N-1 mutually do not include first phase.Described control unit 601 controls N-1 in N number of switch to switch
The N-1 electric pulse is exported in the second round, is specifically included：According to the mark of the N-1 phase, the N is determined
N-1 switch in individual switch；And the N-1 switch that control determines according to the mark of the N-1 phase is in second week
N-1 electric pulse of interim output.
Optionally, the duration of each electric pulse in N number of electric pulse is T3, it is each in the N-1 electric pulse
The duration of electric pulse is T4, the T3Equal to the T4.The T1Equal to the T2。
Control unit 601 and detection unit 602 in the electric pressure converter 600 provided in the present embodiment, can pass through
Control circuit 300 shown in Fig. 3 is realized, and is applied in the scene shown in Fig. 1.The function that electric pressure converter 600 can be realized,
The description of the embodiment shown in Fig. 2 is refer to, is repeated no more herein.
The electric pressure converter that above-described embodiment provides, only carried out with the division of above-mentioned each functional module for example, actual
In, it can be completed, i.e., drawn the internal structure of equipment by different functional modules as needed and by above-mentioned function distribution
It is divided into different functional modules, to complete all or part of function described above.
Each embodiment in this specification is described by the way of progressive, identical similar portion between each embodiment
Divide mutually referring to what each embodiment stressed is the difference with other embodiment.
Control circuit for performing the above-mentioned fault treating apparatus function of the application can be CPU, general processor,
ASIC, field programmable gate array (English：Field-Programmable Gate Array, referred to as：FPGA) or other
PLD, transistor logic, hardware component or its any combination.It can realize or perform with reference to this hair
Various exemplary logic blocks described by bright disclosure, module and circuit.The processor can also realize to calculate
The combination of function, such as combined comprising one or more microprocessors, combination of DSP and microprocessor etc..
The step of method or algorithm with reference to described by present disclosure, can be realized in a manner of hardware, also may be used
By be by computing device software instruction in a manner of realize.Software instruction can be made up of corresponding software module, software mould
Block can be stored on random access memory (English：Random access memory, referred to as：RAM), flash memory, read-only deposit
Reservoir (English：Read only memory, referred to as：ROM), Erasable Programmable Read Only Memory EPROM (English：erasable
Programmable read only memory, referred to as：EPROM), EEPROM (English：
Electrically erasable programmable read-only memory, referred to as：EEPROM), register, hard disk,
In the storage medium of mobile hard disk, CD-ROM or any other form well known in the art.A kind of exemplary storage medium
Coupled to processor, so as to enable a processor to from the read information, and information can be write to the storage medium.When
So, storage medium can also be the part of processor.Processor and storage medium can be located in ASIC.
Above-described embodiment, the purpose, technical scheme and beneficial effect of the application are carried out further
Describe in detail, should be understood that the embodiment that the foregoing is only the application, be not used to limit the application
Protection domain.
Claims (15)
1. a kind of fault handling method of electric pressure converter, it is characterised in that the electric pressure converter includes control circuit and N
Individual phase, N number of phase include N number of switch, and N number of phase corresponds with N number of switch, and N is the integer more than 2,
Methods described includes：
Control circuit control N number of switch exports N number of electric pulse in the period 1, N number of switch with it is described N number of
Electric pulse corresponds, and the duration that the period 1 has is T1, the period 1 is made up of N number of continuous subcycle,
The duration that each subcycle has in N number of continuous subcycle is T1/ N, N number of initial time point of N number of electric pulse
It is not N number of initial time of N number of continuous subcycle；
After control circuit control N number of switch exports N number of electric pulse in the period 1, the control electricity
Road determines the first phase fault, and first phase is a phase in N number of phase, and first phase includes first switch, institute
It is a switch in N number of switch to state first switch；
After the control circuit determines first phase fault, the control circuit controls N-1 in N number of switch to open
Close and export N-1 electric pulse in the second cycle, the N-1 switch corresponds with the N-1 electric pulse, the N-1
Individual switch does not include the first switch, and the duration that the second round has is T2, the second round is continuous by N-1
Subcycle forms, and the duration that each subcycle has in the N-1 continuous subcycles is T2/ (N-1), the N-1 electricity
N-1 initial time of pulse is N-1 initial time of the N-1 continuous subcycles respectively.
2. according to the method for claim 1, it is characterised in that the control circuit determines the first phase fault, including：
The control circuit determines the value of the average current of first phase；
The control circuit determines the value of N number of average current of N number of phase, N number of phase with N number of average current one by one
It is corresponding；
When the value of the average current of first phase, and the difference of the average value of the value of N number of average current of N number of phase,
During more than the first value, the control circuit determines first phase fault.
3. according to the method for claim 1, it is characterised in that the control circuit determines the first phase fault, including：
The control circuit detects that the electric pressure converter is abnormal；
The control circuit disconnects first phase according to the result of the detection；
The control circuit determines, when first phase is in the state disconnected, and N-1 phase is in the state connected,
The abnormal disappearance, the N-1 are mutually the phases in N number of phase in addition to first phase；
Situation of the control circuit based on the abnormal disappearance, determine first phase fault.
4. method according to any one of claims 1 to 3, it is characterised in that the control circuit determines the first phase event
After barrier, methods described also includes：
The control circuit disconnects first phase.
5. method according to any one of claims 1 to 3, it is characterised in that the control circuit determines the first phase event
After barrier, and the control circuit controls N-1 switch in N number of switch to export the N- in the second round
Before 1 electric pulse, methods described also includes：
The control circuit disconnects N number of phase；And
The control circuit preserves the mark of first phase；
The control circuit controls N-1 switch in N number of switch to export the N-1 electric arteries and veins in the second round
Punching, is specifically included：
The control circuit determines N-1 switch in N number of switch according to the mark of first phase；And
The N-1 switch that the control circuit control determines according to the mark of first phase is defeated in the second round
Go out the N-1 electric pulse.
6. method according to any one of claims 1 to 3, it is characterised in that the control circuit determines the first phase event
After barrier, and the control circuit controls N-1 switch in N number of switch to export the N- in the second round
Before 1 electric pulse, methods described also includes：
The control circuit disconnects N number of phase；And
The control circuit preserves the mark of N-1 phase, and the N-1 are mutually the phases in N number of phase, and the N-1 phase is not
Including first phase；
The control circuit controls N-1 switch in N number of switch to export the N-1 electric arteries and veins in the second round
Punching, is specifically included：
The control circuit determines N-1 switch in N number of switch according to the mark of the N-1 phase；And
The N-1 switch that the control circuit control determines according to the mark of the N-1 phase exports in the second cycle
N-1 electric pulse.
7. method according to any one of claims 1 to 3, it is characterised in that each electric pulse in N number of electric pulse
Duration is T3, the duration of each electric pulse in the N-1 electric pulse is T4, the T3Equal to the T4, the T1Equal to institute
State T2。
A kind of 8. electric pressure converter, it is characterised in that the electric pressure converter includes control unit, detection unit and N number of phase,
N number of phase includes N number of switch, and N number of phase corresponds with N number of switch, and N is the integer more than 2, wherein,
Described control unit, for controlling N number of switch to export N number of electric pulse, N number of switch and institute in the period 1
State N number of electric pulse to correspond, the duration that the period 1 has is T1, the period 1 is by N number of continuous subcycle
Form, the duration that each subcycle has in N number of continuous subcycle is T1/ N, during N number of starting of N number of electric pulse
Between be respectively N number of continuous subcycle N number of initial time；
The detection unit, it is described N number of for being exported in described control unit control N number of switch in the period 1
After electric pulse, the first phase fault is determined, first phase is a phase in N number of phase, and first phase includes first
Switch, the first switch are a switches in N number of switch；
Described control unit is additionally operable to, and after the detection unit determines first phase fault, is controlled in N number of switch
N-1 switch export N-1 electric pulse in the second cycle, described N-1 switchs and a pair of the N-1 electric pulse 1
Should, the N-1 switch does not include the first switch, and the duration that the second round has is T2, the second round by
N-1 continuous subcycles form, and the duration that each subcycle has in the N-1 continuous subcycles is T2/ (N-1),
N-1 initial time of the N-1 electric pulse is N-1 initial time of the N-1 continuous subcycles respectively.
9. electric pressure converter according to claim 8, it is characterised in that the detection unit is specifically used for：
Determine the value of the average current of first phase；
The value of N number of average current of N number of phase is determined, N number of phase corresponds with N number of average current；
When the value of the average current of first phase, and the difference of the average value of the value of N number of average current of N number of phase,
During more than the first value, first phase fault is determined.
10. electric pressure converter according to claim 8, it is characterised in that the detection unit is specifically used for：
Detect that the electric pressure converter is abnormal；
According to the result of the detection, first phase is disconnected；
It is determined that when first phase is in the state disconnected, and N-1 phase is in the state connected, the abnormal disappearance,
The N-1 is mutually the phase in N number of phase in addition to first phase；And
Based on the situation of the abnormal disappearance, first phase fault is determined.
11. according to any described electric pressure converter of claim 8 to 10, it is characterised in that described control unit is in the inspection
After survey unit determines first phase fault, it is additionally operable to：
Disconnect first phase.
12. according to any described electric pressure converter of claim 8 to 10, it is characterised in that described control unit is in the inspection
After survey unit determines first phase fault, and N-1 switch in N number of switch is controlled in the second round
Before exporting the N-1 electric pulse, it is additionally operable to：
Disconnect N number of phase；And
Preserve the mark of first phase；
Described control unit controls N-1 switch in N number of switch to export the N-1 electric arteries and veins in the second round
Punching, is specifically included：
According to the mark of first phase, N-1 switch in N number of switch is determined；And
The N-1 switch that control determines according to the mark of first phase exports the N-1 in the second round
Electric pulse.
13. according to any described electric pressure converter of claim 8 to 10, it is characterised in that described control unit is in the inspection
After survey unit determines first phase fault, and N-1 switch in N number of switch is controlled in the second round
Before exporting the N-1 electric pulse, it is additionally operable to：
Disconnect N number of phase；And
The mark of N-1 phase is preserved, the N-1 are mutually the phases in N number of phase, and described N-1 does not include described first mutually
Phase；
Described control unit controls N-1 switch in N number of switch to export the N-1 electric arteries and veins in the second round
Punching, is specifically included：
According to the mark of the N-1 phase, N-1 switch in N number of switch is determined；And
The N-1 switch that control determines according to the mark of the N-1 phase exports N-1 electric pulse in the second cycle.
14. according to any described electric pressure converter of claim 8 to 10, it is characterised in that each in N number of electric pulse
The duration of electric pulse is T3, the duration of each electric pulse in the N-1 electric pulse is T4, the T3Equal to the T4, it is described
T1Equal to the T2。
15. a kind of electric pressure converter, it is characterised in that the electric pressure converter includes processor, memory and N number of phase, institute
Stating N number of phase includes N number of switch, and N number of phase corresponds with N number of switch, and N is the integer more than 2, wherein,
The memory is used to store computer program, and the processor is used for by accessing the computer program, perform with
Lower operation：
N number of switch is controlled to export N number of electric pulse in the period 1, a pair of N number of switch and the N number of electric pulse 1
Should, the duration that the period 1 has is T1, the period 1 is made up of N number of continuous subcycle, described N number of continuous
The duration that each subcycle has in subcycle is T1/ N, N number of initial time of N number of electric pulse is N number of company respectively
N number of initial time of continuous subcycle；
After N number of switch exports N number of electric pulse in the period 1, the first phase fault, first phase are determined
It is a phase in N number of phase, first phase includes first switch, and the first switch is in N number of switch
One switch；
After determining first phase fault, N-1 switch in N number of switch is controlled to export N-1 in the second cycle
Electric pulse, the N-1 switch are corresponded with the N-1 electric pulse, and the N-1 switch is not opened including described first
Close, the duration that the second round has is T2, the second round is made up of the continuous subcycles of N-1, the N-1 company
The duration that each subcycle has in continuous subcycle is T2/ (N-1), the N-1 initial time difference of the N-1 electric pulse
It is N-1 initial time of the N-1 continuous subcycles.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610019810.0A CN105450009B (en) | 2016-01-12 | 2016-01-12 | Electric pressure converter fault handling method and electric pressure converter |
| PCT/CN2017/070736 WO2017121313A1 (en) | 2016-01-12 | 2017-01-10 | Voltage converter fault processing method and voltage converter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610019810.0A CN105450009B (en) | 2016-01-12 | 2016-01-12 | Electric pressure converter fault handling method and electric pressure converter |
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| CN105450009B true CN105450009B (en) | 2018-03-09 |
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| CN105450009B (en) * | 2016-01-12 | 2018-03-09 | 华为技术有限公司 | Electric pressure converter fault handling method and electric pressure converter |
| CN110034543B (en) * | 2019-03-20 | 2020-09-08 | 华为技术有限公司 | Multi-phase buck conversion circuit, fault detection method and device thereof, and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012165606A (en) * | 2011-02-09 | 2012-08-30 | Handotai Rikougaku Kenkyu Center:Kk | Power supply device |
| CN104237761A (en) * | 2013-06-13 | 2014-12-24 | 通用电气公司 | Failure mode detection and protection system and method of insulated gate bipolar transistor |
| CN105024561A (en) * | 2015-08-14 | 2015-11-04 | 南车株洲电力机车研究所有限公司 | IGCT-based three-level circuit fault elimination method |
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| DE102010008274A1 (en) * | 2010-02-17 | 2011-08-18 | Continental Automotive GmbH, 30165 | Method for the phase diagnosis of a multiphase converter |
| US9621045B2 (en) * | 2013-06-26 | 2017-04-11 | Infineon Technologies Austria Ag | Multiphase regulator with self-test |
| JP6232935B2 (en) * | 2013-10-31 | 2017-11-22 | 株式会社オートネットワーク技術研究所 | Power supply apparatus and abnormality determination method for power supply apparatus |
| US9543838B2 (en) * | 2014-02-14 | 2017-01-10 | Infineon Technologies Ag | Phase fault detection in switching power converters |
| CN105450009B (en) * | 2016-01-12 | 2018-03-09 | 华为技术有限公司 | Electric pressure converter fault handling method and electric pressure converter |
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|---|---|---|---|---|
| JP2012165606A (en) * | 2011-02-09 | 2012-08-30 | Handotai Rikougaku Kenkyu Center:Kk | Power supply device |
| CN104237761A (en) * | 2013-06-13 | 2014-12-24 | 通用电气公司 | Failure mode detection and protection system and method of insulated gate bipolar transistor |
| CN105024561A (en) * | 2015-08-14 | 2015-11-04 | 南车株洲电力机车研究所有限公司 | IGCT-based three-level circuit fault elimination method |
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