CN105450009A - Voltage converter fault processing method and voltage converter - Google Patents

Voltage converter fault processing method and voltage converter Download PDF

Info

Publication number
CN105450009A
CN105450009A CN201610019810.0A CN201610019810A CN105450009A CN 105450009 A CN105450009 A CN 105450009A CN 201610019810 A CN201610019810 A CN 201610019810A CN 105450009 A CN105450009 A CN 105450009A
Authority
CN
China
Prior art keywords
phase
switch
control circuit
electric pulse
subcycle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201610019810.0A
Other languages
Chinese (zh)
Other versions
CN105450009B (en
Inventor
秦晓鹏
李少波
李杰红
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
Original Assignee
Huawei Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to CN201610019810.0A priority Critical patent/CN105450009B/en
Publication of CN105450009A publication Critical patent/CN105450009A/en
Priority to PCT/CN2017/070736 priority patent/WO2017121313A1/en
Application granted granted Critical
Publication of CN105450009B publication Critical patent/CN105450009B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Keying Circuit Devices (AREA)
  • Dc-Dc Converters (AREA)

Abstract

The invention provides a voltage converter fault processing method and a voltage converter The voltage converter comprises a control circuit and N phases. The control circuit controls N switches in the N phases to output N electric pulses in a first period, the first period is composed of N continuous sub-periods, each sub-period in the N continuous sub-periods has a time length of T1/N, and N initial time of the N electric pulses are respectively N initial time of the N continuous sub-periods. The control circuit determines a first-phase fault. Furthermore, the control circuit controls N-1 switches of N-1 phases, apart from the first phase, among the N phases to output N-1 electric pulses in a second period. The second period is composed of N-1 continuous sub-periods, each sub-period in the N-1 continuous sub-periods has a time length of T2/(N-1), and N-1 initial time of the N-1 electric pulses are respectively N-1 initial time of the N-1 continuous sub-periods.

Description

Electric pressure converter fault handling method and electric pressure converter
Technical field
The present invention relates to circuit field, particularly relate to electric pressure converter fault handling method and electric pressure converter.
Background technology
Electric pressure converter is (English: voltageconverter) to be a kind of device that can carry out voltage transitions.Electric pressure converter can be load supplying.Electric pressure converter can comprise multiple phase (English: phase), be describedly multiplely described load supplying mutually.When breaking down mutually for one of described electric pressure converter, whole electric pressure converter cannot normally work.
Summary of the invention
The embodiment of the present application provides a kind of electric pressure converter fault handling method and electric pressure converter, when breaking down mutually for one of electric pressure converter, can process fault.
The technical scheme that the embodiment of the present application provides is as follows:
First aspect, provides a kind of electric pressure converter fault handling method, and described electric pressure converter comprises control circuit and N number of phase, describedly N number ofly comprises N number of switch mutually, described N number of and described N number of switch one_to_one corresponding, N be greater than 2 integer,
Described method comprises:
Described control circuit controls described N number of switch in the period 1, exports N number of electric pulse.Described N number of switch and described N number of electric pulse one_to_one corresponding, the duration that the described period 1 has is T 1, the described period 1 is made up of N number of continuous print subcycle, and the duration that in described N number of continuous print subcycle, each subcycle has is T 1/ N, N number of initial time of described N number of electric pulse is N number of initial time of described N number of continuous print subcycle respectively.
After the described N number of switch of described control circuit control exports described N number of electric pulse in the described period 1, described control circuit determination first-phase fault.Described first-phase be described N number of mutually in a phase, described first-phase comprises the first switch, and described first switch is a switch in described N number of switch.
After described first-phase fault determined by described control circuit, N-1 the switch that described control circuit controls in described N number of switch exports N-1 electric pulse in the second cycle.A described N-1 switch and described N-1 electric pulse one_to_one corresponding, a described N-1 switch does not comprise described first switch, and the duration that described second round has is T 2, described second round is made up of N-1 continuous print subcycle, and the duration that in described N-1 continuous print subcycle, each subcycle has is T 2n-1 initial time of/(N-1), a described N-1 electric pulse is N-1 initial time of described N-1 continuous print subcycle respectively.
Pass through such scheme, control circuit determination electric pressure converter N number of mutually in a phase fault after, arrange described N number of mutually in the N-1 that can normally work mutually in the initial time of switch output electric pulse, enable described electric pressure converter export stable voltage.Therefore, technique scheme can process the fault of electric pressure converter, and electric pressure converter can normally be worked.
Optionally, in a kind of example, described control circuit determination first-phase fault, comprising: the value of the average current of described first-phase determined by described control circuit; Described control circuit obtains the value of N number of average current of described N number of phase, described N number of and described N number of average current one_to_one corresponding; When the value of the average current of described first-phase, with the difference of the mean value of the value of described N number of average current of described N number of phase, during more than the first value, described first-phase fault determined by described control circuit.
Determine that the value of the average current of each phase is whether within preset range by the value of the average current of each phase of periodic measurement, described control circuit when influential system does not run, can determine described first-phase fault automatically.
Optionally, in another kind of example, described control circuit determination first-phase fault, comprising: described control circuit detects that described electric pressure converter is abnormal; Described control circuit, according to the result of described detection, disconnects described first-phase; Described control circuit is determined, when described first-phase is in the state of disconnection, and when N-1 is in the state of connection mutually, describedly extremely to disappear, described N-1 be mutually described N number of mutually in phase except described first-phase; Described control circuit, based on described abnormal situation about disappearing, determines described first-phase fault.
Optionally, after described first-phase fault determined by described control circuit, described method also comprises: described control circuit disconnects described first-phase.
Optionally, in a kind of example, after described first-phase fault determined by described control circuit, and before described control circuit N-1 the switch controlled in described N number of switch export a described N-1 electric pulse in described second round, described method also comprises: the described N number of phase of described control circuit disconnection; And the mark of described first-phase preserved by described control circuit.N-1 the switch that described control circuit controls in described N number of switch exports a described N-1 electric pulse in described second round, specifically comprises: described control circuit, according to the mark of described first-phase, determines N-1 switch in described N number of switch; And described N-1 the switch that described control circuit controls to determine according to the mark of described first-phase exports a described N-1 electric pulse in described second round.
Optionally, in another kind of example, after described first-phase fault determined by described control circuit, and before described control circuit N-1 the switch controlled in described N number of switch export a described N-1 electric pulse in described second round, described method also comprises: the described N number of phase of described control circuit disconnection; And the mark of N-1 phase preserved by described control circuit, described N-1 be mutually described N number of mutually in phase, described N-1 phase does not comprise described first-phase.N-1 the switch that described control circuit controls in described N number of switch exports a described N-1 electric pulse in described second round, specifically comprises: described control circuit, according to the mark of a described N-1 phase, determines N-1 switch in described N number of switch; And described N-1 the switch that described control circuit controls to determine according to the mark of a described N-1 phase exports N-1 electric pulse in the second cycle.
By preserving the mark of described first-phase, or preserve the mark of a described N-1 phase, described control circuit disconnect described N number of switch and again starting switch time, directly a startup described N-1 phase, enables described electric pressure converter normally work.
Second aspect, provides a kind of electric pressure converter, and described electric pressure converter comprises control unit, detecting unit and N number of phase, describedly N number ofly comprises N number of switch mutually, described N number of and described N number of switch one_to_one corresponding, N be greater than 2 integer.
Described control unit, in the period 1, N number of electric pulse is exported for controlling described N number of switch, described N number of switch and described N number of electric pulse one_to_one corresponding, the duration that the described period 1 has is T1, the described period 1 is made up of N number of continuous print subcycle, and the duration that in described N number of continuous print subcycle, each subcycle has is T 1/ N, N number of initial time of described N number of electric pulse is N number of initial time of described N number of continuous print subcycle respectively.
Described detecting unit, for after the described N number of switch of described control unit control exports described N number of electric pulse in the described period 1, determine first-phase fault, described first-phase be described N number of mutually in a phase, described first-phase comprises the first switch, and described first switch is a switch in described N number of switch.
Described control unit also for, after described detecting unit determines described first-phase fault, N-1 the switch controlled in described N number of switch exports N-1 electric pulse in the second cycle, a described N-1 switch and described N-1 electric pulse one_to_one corresponding, a described N-1 switch does not comprise described first switch, and the duration that described second round has is T 2, described second round is made up of N-1 continuous print subcycle, and the duration that in described N-1 continuous print subcycle, each subcycle has is T 2n-1 initial time of/(N-1), a described N-1 electric pulse is N-1 initial time of described N-1 continuous print subcycle respectively.
The program has identical technique effect with the scheme of first aspect.
Optionally, in a kind of example, described detecting unit is specifically for the value determining the average current of described first-phase; Obtain the value of N number of average current of described N number of phase, the value one_to_one corresponding of described N number of and described N number of average current; When the value of the average current of described first-phase, with the difference of the mean value of the value of described N number of average current of described N number of phase, during more than the first value, determine described first-phase fault.
Optionally, in another kind of example, described detecting unit specifically for: detect that described electric pressure converter is abnormal; According to the result of described detection, disconnect described first-phase; Determine when described first-phase is in the state of disconnection, and N-1 when being in the state of connection mutually, describedly extremely disappearing, described N-1 be mutually described N number of mutually in phase except described first-phase; And based on described abnormal situation about disappearing, determine described first-phase fault.
Optionally, described control unit after described detecting unit determines described first-phase fault, also for: disconnect described first-phase.
Optionally, in a kind of example, after described detecting unit determines described first-phase fault, and before N-1 the switch controlled in described N number of switch export a described N-1 electric pulse in described second round, also for: disconnect described N number of phase; And preserve the mark of described first-phase.N-1 the switch that described control unit controls in described N number of switch exports a described N-1 electric pulse in described second round, specifically comprises: according to the mark of described first-phase, determines N-1 switch in described N number of switch; And described N-1 the switch controlling to determine according to the mark of described first-phase exports a described N-1 electric pulse in described second round.
Optionally, in another kind of example, described control unit after described detecting unit determines described first-phase fault, and before N-1 the switch controlled in described N number of switch export a described N-1 electric pulse in described second round, also for: disconnect described N number of phase; And preserve the mark of N-1 phase, described N-1 be mutually described N number of mutually in phase, described N-1 phase does not comprise described first-phase.N-1 the switch that described control unit controls in described N number of switch exports a described N-1 electric pulse in described second round, specifically comprises: according to the mark of a described N-1 phase, determines N-1 switch in described N number of switch; And described N-1 the switch controlling to determine according to the mark of a described N-1 phase exports N-1 electric pulse in the second cycle.
The third aspect, provide a kind of electric pressure converter, described electric pressure converter comprises processor, memory and N number of phase, described processor is coupled with described memory, described processor and to be describedly N number ofly coupled, describedly N number ofly comprise N number of switch mutually, described N number of and described N number of switch one_to_one corresponding, N be greater than 2 integer.
Described memory is for storing computer program.Described processor is used for by accessing described computer program, performs following operation:
Control described N number of switch in the period 1, export N number of electric pulse, described N number of switch and described N number of electric pulse one_to_one corresponding, the duration that the described period 1 has is T1, the described period 1 is made up of N number of continuous print subcycle, and the duration that in described N number of continuous print subcycle, each subcycle has is T 1/ N, N number of initial time of described N number of electric pulse is N number of initial time of described N number of continuous print subcycle respectively;
Described N number of switch determines first-phase fault export described N number of electric pulse in the described period 1 after, described first-phase be described N number of mutually in a phase, described first-phase comprises the first switch, and described first switch is a switch in described N number of switch; And
After determining described first-phase fault, N-1 the switch controlled in described N number of switch exports N-1 electric pulse in the second cycle, a described N-1 switch and described N-1 electric pulse one_to_one corresponding, a described N-1 switch does not comprise described first switch, and the duration that described second round has is T 2, described second round is made up of N-1 continuous print subcycle, and the duration that in described N-1 continuous print subcycle, each subcycle has is T 2n-1 initial time of/(N-1), a described N-1 electric pulse is N-1 initial time of described N-1 continuous print subcycle respectively.
The program has identical technique effect with the scheme of first aspect.
Optionally, in a kind of example, described processor performs determines first-phase fault, specifically comprises: the value determining the average current of described first-phase; Determine the value of N number of average current of described N number of phase, the value one_to_one corresponding of described N number of and described N number of average current; When the value of the average current of described first-phase, with the difference of the mean value of the value of described N number of average current of described N number of phase, during more than the first value, determine described first-phase fault.
Optionally, in another kind of example, described processor performs determines first-phase fault, specifically comprises: detect that described electric pressure converter is abnormal; According to the result of described detection, disconnect described first-phase; Determine when described first-phase is in the state of disconnection, and N-1 when being in the state of connection mutually, describedly extremely disappearing, described N-1 be mutually described N number of mutually in phase except described first-phase; And based on described abnormal situation about disappearing, determine described first-phase fault.
Optionally, described processor reads described computer program, performs further: after determining described first-phase fault, disconnect described first-phase.
Optionally, in a kind of example, described processor after determining described first-phase fault, and before N-1 the switch controlled in described N number of switch export a described N-1 electric pulse in described second round, also performs: disconnect described N number of phase; And preserve the mark of described first-phase.N-1 switch in the described N number of switch of described control exports a described N-1 electric pulse in described second round, specifically comprises: according to the mark of described first-phase, determines N-1 switch in described N number of switch; And described N-1 the switch controlling to determine according to the mark of described first-phase exports a described N-1 electric pulse in described second round.
Optionally, in another kind of example, after described first-phase fault determined by described processor, and before N-1 the switch controlled in described N number of switch export a described N-1 electric pulse in described second round, also perform: disconnect described N number of phase; And preserve the mark of N-1 phase, described N-1 be mutually described N number of mutually in phase, described N-1 phase does not comprise described first-phase.N-1 switch in the described N number of switch of described control exports a described N-1 electric pulse in described second round, specifically comprises: according to the mark of a described N-1 phase, determines N-1 switch in described N number of switch; And described N-1 the switch that described control circuit controls to determine according to the mark of a described N-1 phase exports N-1 electric pulse in the second cycle.
Based on above-mentioned first aspect, the either side in second aspect or the third aspect, optionally, the duration of each electric pulse in described N number of electric pulse is T 3, the duration of each electric pulse in a described N-1 electric pulse is T 4, described T 3equal described T 4, described T 1equal described T 2.
Based on above-mentioned first aspect, the either side in second aspect or the third aspect, optionally, described electric pressure converter is that DC-DC transducer is (English: DCtoDCconverter).
Based on above-mentioned first aspect, the either side in second aspect or the third aspect, optionally, described electric pressure converter is that step-down controller is (English: buckconverter).
Based on above-mentioned first aspect, the either side in second aspect or the third aspect, optionally, described electric pressure converter be Voltage Regulator Module (English: voltageregulatormodule, be called for short: VRM).
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the embodiment of the present application, below the accompanying drawing related to embodiment is briefly described.Apparently, accompanying drawing is below some embodiments of the present invention.For those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
A kind of application scenarios schematic diagram that Fig. 1 provides for the embodiment of the present application.
A kind of electric pressure converter fault handling method flow chart that Fig. 2 provides for the embodiment of the present application.
The structural representation of a kind of control circuit that Fig. 3 provides for the embodiment of the present application.
The waveform schematic diagram of a kind of electric pulse that Fig. 4 provides for the embodiment of the present application.
The waveform schematic diagram of a kind of electric pulse that Fig. 5 provides for the embodiment of the present application.
Fig. 6 is the structural representation of a kind of electric pressure converter that the embodiment of the present application provides.
Embodiment
In the embodiment of the present application " first ", " second " and " the 3rd ", only for distinguishing different objects.Be not used in the order limiting different objects.Such as, the first switch, second switch and the 3rd switch is mentioned in embodiment.First switch and second switch are not same switches.Second switch and the 3rd switch are not same switches.First switch and the 3rd switch are not same switches.
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, comprise electric pressure converter 110 and load 120.Electric pressure converter 110 comprises control circuit 111 and three phases.The inductance L 1 that first-phase 112 comprises the first switch 115 and is coupled with described first switch 115.The inductance L 2 that second-phase 113 comprises second switch 116 and is coupled with described second switch 116.The inductance L 3 that third phase 114 comprises the 3rd switch 117 and is coupled with described 3rd switch 117.A point shown in Fig. 1, C point and E point are the output of the first switch 115, second switch 116 and the 3rd switch 117 respectively.When described electric pressure converter 110 is normally powered to described load 120, the first switch 115, second switch 116 and the 3rd switch 117 are respectively at its corresponding output periodically output electric pulse.First switch 115, the initial time of the electric pulse that second switch 116 and the 3rd switch 117 export is normally equally distributed in one cycle.B point, D point and F point are the output of described first-phase 112, described second-phase 113 and described third phase 114 respectively.Between the output of each phase and load 120, also comprise electric capacity C1.First switch 115, the electric pulse that second switch 116 and the 3rd switch 117 export, after inductance and electric capacity C1 process, arrives load 120.Thus electric pressure converter 110 can provide stable direct voltage to described load 120.
For example, described electric pressure converter 110 can be that (English: directcurrent is called for short: DC) turn direct current transducer (English: DCtoDCconverter) direct current.DCtoDCconverter can convert first direct voltage of the described DCtoDCconverter of input to second direct voltage, and exports described second direct voltage, such as, exports the direct voltage of described second amplitude to load 120.The magnitude of voltage of described first direct voltage is different with the magnitude of voltage of described second direct voltage.
For example, described electric pressure converter 110 can adopt heterogeneous (English: multi-phase) (English: voltageregulatormodule is called for short: VRM) realize Voltage Regulator Module.VRM can be that (English: centralprocessingunit is called for short: the step-down controller of CPU) powering is (English: buckconverter) for central processing unit.VRM by first direct voltage of the described VRM of input, can be adjusted to the second direct voltage needed for CPU.The magnitude of voltage of described first direct voltage is greater than the magnitude of voltage of described second direct voltage.Such as, the magnitude of voltage of described first voltage can be 5V or 12V.The first switch 115 shown in Fig. 1, second switch 116 and the 3rd switch 117 can be respectively used to the output realizing multiple phase place in described VRM.Such as, pulse width modulation in described VRM and the embodiment of the present application is (English: pulsewidthmodule, be called for short: the PWM) specific implementation of module, the VR12/IMVP7 pulse width modulation specification can issued in June, 2010 see Intel company is (English: VR12/IMVP7PulseWidthModulationSpecification).
When the phase of in electric pressure converter 110, such as, when described first-phase 112 breaks down, electric pressure converter 110 cannot normally be powered to load 120.Such as, in one-period, if electric pressure converter 110 normally works, then the first switch 115 exports the first electric pulse at the first Preset Time, second switch 116 exports the second electric pulse at the second Preset Time, and the 3rd switch 117 exports the 3rd electric pulse at the 3rd Preset Time.When first-phase 112 breaks down, the first switch 115 may export described first electric pulse at described first Preset Time.That is, one-period may only have two electric pulses.And two electric pulses are not equally distributed in one cycle.The voltage that electric pressure converter exports is jiggly voltage.Therefore, when in electric pressure converter 110 is broken down mutually, electric pressure converter 110 cannot normally be powered to load 120.
A kind of electric pressure converter fault detection method flow chart that Fig. 2 provides for the embodiment of the present application.Method shown in Fig. 2 may be used in the circuit structure of Fig. 1, thus realizes the function of control circuit in Fig. 1.Such as, when some in Fig. 1 breaks down mutually, the method shown in Fig. 2 can be adopted to process described fault.Described electric pressure converter in method shown in Fig. 2 comprises control circuit and N number of phase, describedly N number ofly comprises N number of switch mutually, described N number of and described N number of switch one_to_one corresponding, N be greater than 2 integer.
Described method comprises S201, S202 and S203.
S201, described control circuit controls described N number of switch in the period 1, exports N number of electric pulse.
Described N number of switch and described N number of electric pulse one_to_one corresponding, the duration that the described period 1 has is T 1, the described period 1 is made up of N number of continuous print subcycle, and the duration that in described N number of continuous print subcycle, each subcycle has is T 1/ N, N number of initial time of described N number of electric pulse is N number of initial time of described N number of continuous print subcycle respectively.
Specifically, described N number of electric pulse and described N number of initial time one_to_one corresponding.In described N number of electric pulse, each electric pulse has an initial time.N number of initial time of described N number of electric pulse is N number of initial time of described N number of continuous print subcycle respectively.
S202, after the described N number of switch of described control circuit control exports described N number of electric pulse in the described period 1, described control circuit determination first-phase fault.
Described first-phase be described N number of mutually in a phase, described first-phase comprises the first switch, and described first switch is a switch in described N number of switch.
S203, after described first-phase fault determined by described control circuit, N-1 the switch that described control circuit controls in described N number of switch exports N-1 electric pulse in the second cycle.
A described N-1 switch and described N-1 electric pulse one_to_one corresponding, a described N-1 switch does not comprise described first switch, and the duration that described second round has is T 2, described second round is made up of N-1 continuous print subcycle, and the duration that in described N-1 continuous print subcycle, each subcycle has is T 2n-1 initial time of/(N-1), a described N-1 electric pulse is N-1 initial time of described N-1 continuous print subcycle respectively.
Specifically, a described N-1 electric pulse and described N-1 initial time one_to_one corresponding.In described N number of electric pulse, each electric pulse has an initial time.N number of initial time of a described N-1 electric pulse is N-1 initial time of described N-1 continuous print subcycle respectively.
N number of continuous print subcycle in the application refers to that the end time of a subcycle in adjacent subcycle in N number of continuous print subcycle equals the time started of another subcycle.Such as, N number of continuous print subcycle comprises the first subcycle, the second subcycle and the 3rd subcycle.First subcycle and the second subcycle are adjacent subcycles.Second subcycle and the 3rd subcycle are adjacent subcycles.First subcycle is prior to the second subcycle.Second subcycle is prior to the 3rd subcycle.The end time of period 1 equals the time started of the second subcycle.The end time of second round equals the time started of the 3rd subcycle.
In like manner, N-1 continuous print subcycle in the application refers to that the end time of a subcycle in adjacent subcycle in N-1 continuous print subcycle equals the time started of another subcycle.
Control circuit 111 in Fig. 1 may be used for realizing the control circuit in the method shown in Fig. 2.The first switch 115 in Fig. 1, second switch 116 and the 3rd switch 117, may be used for the N number of switch realized in the method shown in Fig. 2.N be greater than 2 integer.N in Fig. 1 equals 3.Certainly, also can comprise more switch in Fig. 1, thus realize in the method shown in Fig. 2, N can for the scene being greater than 3.Hereafter only equal 3 for the N shown in Fig. 1, the method shown in Fig. 2 is illustrated.Described first-phase 112 in Fig. 1, described second-phase 113 and described third phase 114, may be used for the N number of phase realized in the method described in Fig. 2.
The structural representation of a kind of control circuit that Fig. 3 provides for embodiment.Control circuit 300 in Fig. 3 may be used for performing the method described in Fig. 2.Specifically, control circuit 300 may be used for realizing the control circuit in the method shown in Fig. 2.Described control circuit 300 may be used for the control circuit 111 realized shown in Fig. 1.As shown in Figure 3, control circuit 300 comprises FCM fault control module 310, phase control module 320, the first PWM module 330, second PWM module 340 and the 3rd PWM module 350.Described FCM fault control module 310, phase control module 320, the first PWM module 330, second PWM module 340 and the 3rd PWM module 350 pass through bus communication.Such as, described bus can be that (English: powermanagementbus is called for short: PMBus) power management bus.Certainly, the controller 300 shown in Fig. 3 can comprise more PWM module, thus realizes in the method shown in Fig. 2, N be greater than 3 scene.Optionally, described control circuit 300 also comprises current detection module 360.Such as, the above-mentioned module in control circuit 300 can (English: application-specificintegratedcircuit be called for short: ASIC) realize by application-specific integrated circuit (ASIC).
For example, described first PWM module 330 in control circuit 300 can be coupled with the first switch 115 shown in Fig. 1, thus controls described first switch 115.Described second PWM module 340 can be coupled with the second switch 116 shown in Fig. 1, thus controls described second switch 116.Described 3rd PWM module 350 can be coupled with the 3rd switch 117 shown in Fig. 1, thus controls described 3rd switch 117.
Periodically transmit control signal to described first switch 115 with the first PWM module 330 below, thus control described first switch 115 periodically output electric pulse be example, to described first switch 115, the principle of second switch 116 and the 3rd switch 117 output electric pulse is described.
For example, described first switch 115 can adopt a P-channel metal-oxide-semiconductor (English: positivechannelmetaloxidesemiconductor, be called for short: PMOS) and N NMOS N-channel MOS N (English: negativechannelmetaloxidesemiconductor, be called for short: switching tube realization NMOS) be composed in series.The drain electrode of described PMOS is coupled with the input voltage (hereinafter referred to as Vin) inputting described electric pressure converter 110 from described electric pressure converter 110 outside, the source electrode of described PMOS and the drain coupled of described NMOS, the source electrode of described NMOS is coupled with the ground wire shown in Fig. 1.A described PWM330, by the grid to described NMOS and described PMOS, transmits control signal respectively, controls the state of described first switch.Such as, when a PWM330 sends the first low level signal to described NMOS, when the grid to described PMOS sends the second low level signal, described first switch 115 is in state 1.I.e. described PMOS conducting, described NMOS not conducting.When described first switch 115 is in state 1, the first switch 115 is at A point output electric pulse.The magnitude of voltage of described electric pulse and described V inmagnitude of voltage equal.When a described PWM330 sends the first high level signal to described NMOS, when the grid to described PMOS sends the second high level signal, described first switch 115 is in state 2.I.e. described NMOS conducting, described PMOS not conducting.When described first switch 115 is in state 2, the first switch 115 does not have output electric pulse at A point.When described first switch 115 is in state 2, the magnitude of voltage of A point is equal with the magnitude of voltage of ground wire.Such as, the magnitude of voltage of described ground wire can equal 0V.When a described PWM330 sends the first intermediate level signal to described NMOS, when the grid to described PMOS sends the second intermediate level signal, described first switch 115 is in state 3.I.e. described PMOS not conducting, described NMOS not conducting, described first-phase 112 is in the state of disconnection.When described first switch 115 is in state 3, described first switch 115 does not have output electric pulse at A point.High level signal, intermediate level signal and low level signal are relative concepts.Particularly, the level of high level signal that sends to same MOS of PWM module is higher than the level of intermediate level signal.The level of the intermediate level signal that PWM module sends to same MOS is higher than the level of low level signal.It will be understood by those skilled in the art that, the magnitude of voltage of described first high level signal, described second high level signal, described first intermediate level signal, described second intermediate level signal, described first low level signal and described second low level signal, can choose according to the conducting voltage of described NMOS and described PMOS.
Switch in the application refers to, exports the circuit of an electric pulse under the control of control circuit in described period 1 or described second round.Such as, when above-mentioned first switch 115 is by two MOS, when namely PMOS and NMOS realizes, a PMOS and NMOS forms a switch in described first-phase.The state of switch can be the one in following three kinds.State 1, the output of described switch and V incoupling, the magnitude of voltage that described switch exports is equal with the magnitude of voltage of described Vin, and namely described switch is at its output output electric pulse; State 2, the output of described switch is coupled with ground wire, and the magnitude of voltage that described switch exports is equal with the magnitude of voltage of described ground wire, and such as described magnitude of voltage is 0V, and described switch does not have output electric pulse at its output; State 3, the output of described switch and described V inand described ground wire all disconnects, described switch does not have output electric pulse at its output.
For example, described first PWM module 330 transmits control signal to described first switch 115, can be that described first PWM module 330 transmits control signal directly to described first switch 115.Also can be comprise drive circuit between described first PWM module 330 and described first switch 115.Control signal is sent to described drive circuit by described first PWM module 330.Described control signal is amplified by described driving, and the control signal after amplifying is sent to described first switch 115.
For example, when described electric pressure converter 110 is powered to load 120, described first PWM module 330 periodically sends described high level signal and described low level signal.Correspondingly, the period of state ground of described first switch 115 switches between described state 1 and described state 2.When described first switch 115 is in state 1, described first switch is at described A point output electric pulse.
For example, described second switch 116 is at C property dot cycle ground output electric pulse, and described 3rd switch 117 is at E property dot cycle ground output electric pulse, can adopt and realize in the implementation that A point output electric pulse is identical with described first switch 115.
For example, described first PWM module 330, described second PWM module 340 and described 3rd PWM module 350 can be realized by signal generator.
For example, the first switch 115 in described first-phase 112, the 3rd switch 117 in the second switch 116 in described second-phase 113 and described third phase 114, the initial time of output electric pulse is different in one cycle.The initial time of described three electric pulses that described three switches export is equally distributed in one-period.
For example, Fig. 4 shows in the period 1 described in S201, the electric pulse that the first switch 115 exports at A point, the electric pulse that second switch 116 exports at C point, and the 3rd switch 117 is in a kind of possible implementation of the waveform of E point output electric pulse.The described period 1, the second subcycle and the 3rd subcycle formed by the first subcycle.The duration of described period 1 is T 1.Suppose that the initial time of described period 1 is 0.The end time of described period 1 is T 1.Described first subcycle initial time be 0, the end time is T 1/ 3.The initial time of described second subcycle is T 1/ 3, the end time is 2T 1/ 3.The initial time of described 3rd subcycle is 2T 1/ 3, the end time is T 1.Described first switch 115, the duration of the electric pulse that second switch 116 and the 3rd switch 117 export in the described period 1 is T 3.Described first switch 115, each switch in second switch 116 and the 3rd switch 117 in the described period 1 not the duration of output electric pulse be T 1-T 3.In the described period 1, when switch output electric pulse, described switch is in described state 1.In the described period 1, when switch not output electric pulse time, described switch is in described state 2, and the amplitude of the voltage of output can be 0V.It will be understood by those skilled in the art that, when switch is switched to described state 2 by described state 1, described switch exports the rising edge of described electric pulse, and when described switch is switched to described state 1 by described state 2, described switch exports the trailing edge of described electric pulse.The duration that described rising edge has is much smaller than described T 3, the duration that described trailing edge has is much smaller than described T 3.
For example, each in described electric pressure converter 110 is the virtual voltage that described load 120 is powered mutually, is the magnitude of voltage mean value in time of the switch output that this phase comprises.Such as, in described first-phase 112, within the period 1, the magnitude of voltage that described first switch 112 exports at A point equals described V inthe duration of electric pulse of magnitude of voltage be T 3, output voltage values is the duration of 0V is T 1-T 3.The low pass filter that the voltage of A point is formed through L1 and C1 shown in Fig. 1, is carried in magnitude of voltage in load 120 for being (V in* T 3)/T 1.In like manner, in described second-phase 113 and described third phase 114, the magnitude of voltage be carried in load 120 is also (Vin*T 3)/T 1.
For example, the first switch 115, second switch 116 and the 3rd switch 117 are in the period 1 shown in Fig. 4, and the initial time of output electric pulse is different.Said process can phase control module 320 as shown in Figure 3 to described first PWM module 330, described second PWM module 340 and described 3rd PWM module 350 send different clock signals respectively and realize.The clock frequency of the clock signal that described phase control module 320 sends to above-mentioned PWM module is identical, and the phase place of the clock signal that described phase control module 320 sends to above-mentioned PWM module is different.Such as, different along the corresponding time in the clock signal that described phase control module 320 sends to above-mentioned PWM module.Described first PWM module 330, second PWM module 340 and the 3rd PWM module 350 receive the clock signal of described phase control module 320 respectively.Each PWM module is at the upper time output low level signal along correspondence of the clock signal received, and the switch be coupled with described PWM module enters described state 1.The upper time along correspondence of clock signal is the time started of PWM module output low level signal.The duration that each PWM module exports described low level signal is T 3, T 3the magnitude of voltage of time span needed for described load 120 determine.Duration T 3after, the control signal that described PWM module exports becomes high level signal from described low level signal, and the switch be coupled with described PWM module enters described state 2.
Optionally, in a kind of example, described first-phase 112 fault determined by control circuit described in S202, comprising: the value of the average current of described first-phase 112 determined by described control circuit.Described control circuit obtains the value of N number of average current of described N number of phase, the value one_to_one corresponding of described N number of and described N number of average current.When the value of the average current of described first-phase 112, with the difference of the mean value of the value of described N number of average current of described N number of phase, during more than the first value, described first-phase 112 fault determined by described control circuit.
Accordingly, the control circuit 300 shown in Fig. 3 comprises current detection module 360.Described first-phase 112 in described electric pressure converter 110, in described second-phase 113 and described third phase 114, comprises a current sensing means (not shown in figure 1) respectively.Described current sensing means for measure described three mutually in the average current of each phase.Described average current refers to, in sense cycle, and the mean value of electric current.In a kind of example, the average current of the L1 shown in described current sensing means survey map 1 is as the average current of described first-phase 112, the average current of the L2 shown in survey map 1 is as the average current of described second-phase 113, and the average current of the L3 shown in survey map 1 is as the average current of described third phase 114.In another kind of example, the switching tube that described first switch 115, described second switch 116 and described 3rd switch 117 are composed in series by described PMOS and described NMOS respectively realizes.Described current sensing means 360 measures the average voltage between described nmos source and drain electrode respectively.Described NMOS under the state receiving high level signal, and under the state receiving low level signal, has specific resistance value respectively.Therefore, such as, according to the duration of described NMOS conducting, described T 1-T 3, and the duration of described NMOS not conducting, such as described T 1, described current sensing means 360 can calculate the average resistance of described NMOS.Further, the average voltage of described current sensing means 360 average resistance and described NMOS according to NMOS, calculates the average current of the phase at described NMOS place.
For example, described current detection module 360 determines the value of the average current of each phase that current sensing means is measured, and calculates the mean value of the value of the average current of described three phases.Described current detection module 360 is by comparator, and whether the value of the average current of more each phase is greater than described first value with the difference of the mean value of the value of the average current of described three phases respectively.The value of described first value for presetting.Described first value can be the maximum of the fluctuation of the value of the average current that described electric pressure converter allows when normally working.Such as, described first value is 10% of the mean value of the value of described N number of average current.If the difference of the mean value of the value of the value of the average current of described first-phase 112 and described 3 average currents exceedes described first value, described current detection module 360 determines described first-phase 112 fault.Further, the mark of described first-phase 112 is sent to described FCM fault control module 310 by described current detection module 360, and described phase control module 320.
For example, in another kind of example, described first-phase 112 fault determined by control circuit described in S202, comprising: described control circuit detects that described electric pressure converter is abnormal.Described control circuit, according to the result of described detection, disconnects described first-phase 112.Described control circuit 111 is determined, when described first-phase 112 is in the state of disconnection, and when N-1 is in the state of connection mutually, describedly extremely to disappear, described N-1 be mutually described N number of mutually in phase except described first-phase.Described control circuit, based on described abnormal situation about disappearing, determines described first-phase 112 fault.
In the application, certain is in the state of disconnection mutually, refers to that the switch that this comprises mutually is in described state 3.The output of described switch and V inbetween disconnect, output and the ground wire of described switch are disconnected.Certain is in the state of connection mutually, refers to the state of the switch comprised mutually for this, and described state 1 and described state 2 are alternately.Described switch periods ground output electric pulse.
Such as, in described control circuit 300, also comprise abnormality detection module (not shown in Fig. 3), for detecting the voltage at described load 120 two ends.Voltage when load 120 two ends described in certain time or certain duration is greater than the second value, and described control circuit determines that described electric pressure converter is abnormal.Such as, described first-phase 112 fault is certain the components and parts short circuit in described first-phase 112.For example, the inductance in described first-phase 112 or the first switch are short-circuited.It is that the voltage at described load 120 two ends is greater than described second value that the short circuit of described first-phase 112 causes described electric pressure converter 110 abnormal.Described control circuit 300 according to the situation of described electric pressure converter 110 exception, disconnects described first-phase 112, second-phase 113 and third phase 114 after determining that described electric pressure converter 110 is abnormal.Afterwards, described control circuit 300 according to first-phase 112 described in the instruction fragmentary 1 of configuration, a certain item in described second-phase 113 and described third phase 114, and control the output electric pulse of the switch periods of the correspondence in two other phase.Described control circuit 300 detects after described a certain item is disconnected, and whether described exception disappears.For example, described abnormal disappearance refers to, the voltage at described load 120 two ends is no more than the 3rd value.Described 3rd value is less than described second value.If described first-phase 112 is in the state of disconnection, and described second-phase 113 and described third phase 114 are in the state of connection, described abnormal disappearance, then described abnormality detection module determines that described first-phase 112 fault result in the situation of described electric pressure converter 110 exception.Further, the mark of described first-phase 112 is sent to described FCM fault control module 310 by described abnormality detection module, and described phase control module 320.
Optionally, in a kind of example, also comprise after S202 and before S203, described control circuit 300 disconnects described first-phase 112.
For example, control circuit 300 disconnects described first-phase 112 and can control described first PWM module 330 and realize by FCM fault control module 310 as shown in Figure 3.FCM fault control module 310 is set to high-impedance state (English: highimpedance), thus make described first PWM module 330 and no longer periodically export described low level signal or described high level signal by exporting in described first PWM module 330.Further, the output of described first PWM module also connects intermediate level output module, and described intermediate level output module can by being connected to V inwith the divider resistance between ground wire realizes.Described first PWM module exports intermediate level to described first switch, makes described PMOS and described NMOS all not conductings of described first switch.Namely, when described first switch is in described state 3, described first-phase 112 is disconnected.
Optionally, in another kind of example, also comprise after S302 and before S303, described control circuit disconnects described N number of phase.The mark of described first-phase 112 preserved by described control circuit, or the mark of N-1 phase preserved by described control circuit.Described N-1 be mutually described N number of mutually in phase, described N-1 phase does not comprise described first-phase 112.
For example, the mark of described first-phase 112, or the mark of a described N-1 phase, be stored in the register (not shown in Fig. 3) of control circuit 300.Described register can lay respectively in phase control module 320 and FCM fault control module 310, also can be arranged in control circuit 300.Described phase control module 320 communicates with FCM fault control module 310 can by register described in bus access.
Fig. 5 shows in S203, in described second round, and the electric pulse that described second switch 116 exports at C point, and described 3rd switch 117 is in a kind of possible implementation of the waveform of E point output electric pulse.In the present embodiment, described N equals 3, N-1 and equals 2.Described second round is made up of the 4th subcycle and the 5th subcycle.The duration of described second round is T 2.Suppose that the initial time of described second round is 0.The end time of described second round is T 2.The initial time of described 4th subcycle is 0, and the end time is T 2/ 2.The initial time of described 5th subcycle is T 2/ 2, the end time is T 2.Second switch 116 and the 3rd switch 117 are in described second round, and the duration exporting described electric pulse is T 4.Each switch in second switch 116 and the 3rd switch 117 in described second round not the duration of output electric pulse be T 2-T 4.
Optionally, described T 3equal described T 4, and described T 1equal described T 2.
Optionally, if also comprise described control circuit after S202 and before S203 to disconnect described N number of phase, and the mark of described first-phase 112 preserved by described control circuit, then S203 comprises the mark of described control circuit according to described first-phase 112, determines N-1 switch in described N number of switch.S203 comprises described N-1 the switch that described in described control circuit, control circuit control is determined according to the mark of described first-phase 112 and exports N-1 electric pulse in the second cycle.
Specifically, N number of switch of described electric pressure converter and N number of phase one_to_one corresponding.Determine that a described N-1 switch refers to according to the mark of described first-phase 112, determine in described N number of switch, N-1 switch outside described first switch.
Optionally, if also comprise described control circuit after S202 and before S203 to disconnect described N number of phase, and the mark of a described N-1 phase preserved by described control circuit, then S203 comprises the mark of described control circuit according to a described N-1 phase, determines N-1 switch in described N number of switch.S203 comprises described N-1 the switch that described in described control circuit, control circuit control is determined according to the mark of a described N-1 phase and exports N-1 electric pulse in the second cycle.
Specifically, N number of switch of described electric pressure converter and N number of phase one_to_one corresponding.Determine that a described N-1 switch refers to according to the mark of a described N-1 phase, determine described N-1 described N-1 the switch comprised mutually.
Fig. 6 is the structural representation of a kind of electric pressure converter that the embodiment of the present application provides.Described electric pressure converter 600 comprises control unit 601, detecting unit 602 and N number of phase 603, and described N number of phase 603 comprises N number of switch (not shown in Fig. 6), described N number of phase 603 and described N number of switch one_to_one corresponding, N be greater than 2 integer.For example, described electric pressure converter 600 can adopt the electric pressure converter 110 shown in Fig. 1 to realize.Such as control unit 601 and detecting unit 602 can adopt the control circuit 111 shown in Fig. 1 to realize.When N equals 3, N number of phase 603 can adopt the first-phase 112 shown in Fig. 1, and second-phase 113 and third phase 114 realize.
See Fig. 6, electric pressure converter 600 may be used for the method shown in Fig. 2 that performs.Control unit 601 in electric pressure converter 600 and detecting unit 602 can adopt the control circuit 300 in Fig. 3 to realize.
Described control unit 601, exports N number of electric pulse for controlling described N number of switch in the period 1, described N number of switch and described N number of electric pulse one_to_one corresponding.The duration that the described period 1 has is T 1, the described period 1 is made up of N number of continuous print subcycle, and the duration that in described N number of continuous print subcycle, each subcycle has is T 1/ N, N number of initial time of described N number of electric pulse is N number of initial time of described N number of continuous print subcycle respectively.
Specifically, described N number of electric pulse and described N number of initial time one_to_one corresponding.In described N number of electric pulse, each electric pulse has an initial time.N number of initial time of described N number of electric pulse is N number of initial time of described N number of continuous print subcycle respectively.
For example, described control unit 601 may be used for performing the S201 shown in Fig. 2.
Described detecting unit 602, after described N number of switch exports described N number of electric pulse in the described period 1, determines first-phase fault for controlling at described control unit 601.Described first-phase is a phase in described N number of phase 603, and described first-phase comprises the first switch, and described first switch is a switch in described N number of switch.
For example, described detecting unit 602 may be used for performing the S202 shown in Fig. 2.
Described control unit 601 also for, after described detecting unit 602 determines described first-phase fault, N-1 the switch controlled in described N number of switch exports N-1 electric pulse in the second cycle, a described N-1 switch and described N-1 electric pulse one_to_one corresponding.A described N-1 switch does not comprise described first switch, and the duration that described second round has is T 2, described second round is made up of N-1 continuous print subcycle, and the duration that in described N-1 continuous print subcycle, each subcycle has is T 2n-1 initial time of/(N-1), a described N-1 electric pulse is N-1 initial time of described N-1 continuous print subcycle respectively.
Specifically, a described N-1 electric pulse and described N-1 initial time one_to_one corresponding.In described N number of electric pulse, each electric pulse has an initial time.N number of initial time of a described N-1 electric pulse is N-1 initial time of described N-1 continuous print subcycle respectively.
For example, described control unit 601 can also be used for performing S203 shown in Fig. 2.
Above-mentioned unit can pass through pure hardware implementing, also can be realized by the combination of hardware and software.Such as, the computer program of CPU by storing in execute store, thus realize above-mentioned unit.
For example, in a kind of example, described detecting unit 602 is specifically for the value determining the average current of described first-phase; Obtain the value of N number of average current of described N number of phase, the value one_to_one corresponding of described N number of and described N number of average current; And when the value of average current of described first-phase, with the difference of the mean value of the value of described N number of average current of described N number of phase, during more than the first value, determine described first-phase 112 fault.
For example, in another kind of example, described detecting unit 602 specifically for: detect that described electric pressure converter is abnormal; According to the result of described detection, disconnect described first-phase; Determine when described first-phase is in the state of disconnection, and N-1 when being in the state of connection mutually, describedly extremely disappearing, described N-1 be mutually described N number of mutually in phase except described first-phase; And based on described abnormal situation about disappearing, determine described first-phase fault.
Optionally, described control unit 601 after described detecting unit determines described first-phase fault, also for: disconnect described first-phase.
Optionally, in a kind of example, described control unit 601 after described detecting unit determines described first-phase fault, and before N-1 the switch controlled in described N number of switch export a described N-1 electric pulse in described second round, also for: disconnect described N number of phase 603; And preserve the mark of described first-phase.N-1 the switch that described control unit controls in described N number of switch exports a described N-1 electric pulse in described second round, specifically comprises: according to the mark of described first-phase, determines N-1 switch in described N number of switch; And described N-1 the switch controlling to determine according to the mark of described first-phase exports a described N-1 electric pulse in described second round.
Optionally, in another kind of example, described control unit 601 after described detecting unit determines described first-phase fault, and before N-1 the switch controlled in described N number of switch export a described N-1 electric pulse in described second round, also for: disconnect described N number of phase 603; And preserving the mark of a described N-1 phase, described N-1 is the phase in described N number of phase 603 mutually, and described N-1 does not comprise described first-phase mutually.N-1 the switch that described control unit 601 controls in described N number of switch exports a described N-1 electric pulse in described second round, specifically comprises: according to the mark of a described N-1 phase, determines N-1 switch in described N number of switch; And described N-1 the switch controlling to determine according to the mark of a described N-1 phase exports N-1 electric pulse in the second cycle.
Optionally, the duration of each electric pulse in described N number of electric pulse is T 3, the duration of each electric pulse in a described N-1 electric pulse is T 4, described T 3equal described T 4.Described T 1equal described T 2.
Control unit 601 in the electric pressure converter 600 provided in the present embodiment and detecting unit 602, can be realized by the control circuit 300 shown in Fig. 3, and be applied in the scene shown in Fig. 1.The function that electric pressure converter 600 can realize, please refer to the description of the embodiment shown in Fig. 2, here repeats no more.
The electric pressure converter that above-described embodiment provides, only be illustrated with the division of above-mentioned each functional module, in practical application, can distribute as required and by above-mentioned functions and be completed by different functional modules, internal structure by equipment is divided into different functional modules, to complete all or part of function described above.
Each embodiment in this specification all adopts the mode of going forward one by one to describe, between each embodiment identical similar part mutually see, what each embodiment stressed is the difference with other embodiments.
Can be CPU for performing the control circuit of the above-mentioned fault treating apparatus function of the application, general processor, ASIC, field programmable gate array is (English: Field-ProgrammableGateArray, FPGA) or other programmable logic devices, transistor logic, hardware component or its combination in any be called for short:.It can realize or perform in conjunction with various exemplary logic block, module and the circuit described by the disclosure of invention.Described processor also can be the combination realizing computing function, such as, comprise one or more micro processor combination, combination of DSP and microprocessor etc.
Step in conjunction with the method described by the application's disclosure or algorithm can the mode of hardware realize, and also can be realized by the mode of processor executive software instruction.Software instruction can be made up of corresponding software module, software module can be stored in random access memory (English: randomaccessmemory, be called for short: RAM), flash memory, read-only memory is (English: readonlymemory, be called for short: ROM), Erasable Programmable Read Only Memory EPROM is (English: erasableprogrammablereadonlymemory, be called for short: EPROM), EEPROM (Electrically Erasable Programmable Read Only Memo) is (English: electricallyerasableprogrammableread-onlymemory, be called for short: EEPROM), register, hard disk, portable hard drive, in the storage medium of CD-ROM or other form any well known in the art.Exemplary storage medium is coupled to a processor, thus enables processor from this read information, and can to this storage medium written information.Certainly, storage medium also can be the part of processor.Processor and storage medium can be arranged in ASIC.
Above-described embodiment, further describes the object of the application, technical scheme and beneficial effect, it should be understood that the embodiment that the foregoing is only the application, and be not used in the protection range limiting the application.

Claims (14)

1. a fault handling method for electric pressure converter, is characterized in that, described electric pressure converter comprises control circuit and N number of phase, describedly N number ofly comprises N number of switch mutually, described N number of and described N number of switch one_to_one corresponding, N be greater than 2 integer,
Described method comprises:
Described control circuit controls described N number of switch in the period 1, exports N number of electric pulse, and described N number of switch and described N number of electric pulse one_to_one corresponding, the duration that the described period 1 has is T 1, the described period 1 is made up of N number of continuous print subcycle, and the duration that in described N number of continuous print subcycle, each subcycle has is T 1/ N, N number of initial time of described N number of electric pulse is N number of initial time of described N number of continuous print subcycle respectively;
After the described N number of switch of described control circuit control exports described N number of electric pulse in the described period 1, described control circuit determination first-phase fault, described first-phase be described N number of mutually in a phase, described first-phase comprises the first switch, and described first switch is a switch in described N number of switch;
After described first-phase fault determined by described control circuit, N-1 the switch that described control circuit controls in described N number of switch exports N-1 electric pulse in the second cycle, a described N-1 switch and described N-1 electric pulse one_to_one corresponding, a described N-1 switch does not comprise described first switch, and the duration that described second round has is T 2, described second round is made up of N-1 continuous print subcycle, and the duration that in described N-1 continuous print subcycle, each subcycle has is T 2n-1 initial time of/(N-1), a described N-1 electric pulse is N-1 initial time of described N-1 continuous print subcycle respectively.
2. method according to claim 1, is characterized in that, described control circuit determination first-phase fault, comprising:
The value of the average current of described first-phase determined by described control circuit;
The value of N number of average current of described N number of phase determined by described control circuit, described N number of and described N number of average current one_to_one corresponding;
When the value of the average current of described first-phase, with the difference of the mean value of the value of described N number of average current of described N number of phase, during more than the first value, described first-phase fault determined by described control circuit.
3. method according to claim 1, is characterized in that, described control circuit determination first-phase fault, comprising:
Described control circuit detects that described electric pressure converter is abnormal;
Described control circuit, according to the result of described detection, disconnects described first-phase;
Described control circuit is determined, when described first-phase is in the state of disconnection, and when N-1 is in the state of connection mutually, describedly extremely to disappear, described N-1 be mutually described N number of mutually in phase except described first-phase;
Described control circuit, based on described abnormal situation about disappearing, determines described first-phase fault.
4., according to the arbitrary described method of claims 1 to 3, it is characterized in that, after described first-phase fault determined by described control circuit, described method also comprises:
Described control circuit disconnects described first-phase.
5. according to the arbitrary described method of claims 1 to 3, it is characterized in that, after described first-phase fault determined by described control circuit, and before described control circuit N-1 the switch controlled in described N number of switch export a described N-1 electric pulse in described second round, described method also comprises:
Described control circuit disconnects described N number of phase; And
The mark of described first-phase preserved by described control circuit;
N-1 the switch that described control circuit controls in described N number of switch exports a described N-1 electric pulse in described second round, specifically comprises:
Described control circuit, according to the mark of described first-phase, determines N-1 switch in described N number of switch; And
Described N-1 the switch that described control circuit controls to determine according to the mark of described first-phase exports a described N-1 electric pulse in described second round.
6. according to the arbitrary described method of claims 1 to 3, it is characterized in that, after described first-phase fault determined by described control circuit, and before described control circuit N-1 the switch controlled in described N number of switch export a described N-1 electric pulse in described second round, described method also comprises:
Described control circuit disconnects described N number of phase; And
The mark of N-1 phase preserved by described control circuit, described N-1 be mutually described N number of mutually in phase, described N-1 phase does not comprise described first-phase;
N-1 the switch that described control circuit controls in described N number of switch exports a described N-1 electric pulse in described second round, specifically comprises:
Described control circuit, according to the mark of a described N-1 phase, determines N-1 switch in described N number of switch; And
Described N-1 the switch that described control circuit controls to determine according to the mark of a described N-1 phase exports N-1 electric pulse in the second cycle.
7., according to the arbitrary described method of claim 1 to 6, it is characterized in that, the duration of each electric pulse in described N number of electric pulse is T 3, the duration of each electric pulse in a described N-1 electric pulse is T 4, described T 3equal described T 4, described T 1equal described T 2.
8. an electric pressure converter, is characterized in that, described electric pressure converter comprises control unit, detecting unit and N number of phase, describedly N number ofly comprises N number of switch mutually, described N number of and described N number of switch one_to_one corresponding, N be greater than 2 integer, wherein,
Described control unit, exports N number of electric pulse for controlling described N number of switch in the period 1, and described N number of switch and described N number of electric pulse one_to_one corresponding, the duration that the described period 1 has is T 1, the described period 1 is made up of N number of continuous print subcycle, and the duration that in described N number of continuous print subcycle, each subcycle has is T 1/ N, N number of initial time of described N number of electric pulse is N number of initial time of described N number of continuous print subcycle respectively;
Described detecting unit, for after the described N number of switch of described control unit control exports described N number of electric pulse in the described period 1, determine first-phase fault, described first-phase be described N number of mutually in a phase, described first-phase comprises the first switch, and described first switch is a switch in described N number of switch;
Described control unit also for, after described detecting unit determines described first-phase fault, N-1 the switch controlled in described N number of switch exports N-1 electric pulse in the second cycle, a described N-1 switch and described N-1 electric pulse one_to_one corresponding, a described N-1 switch does not comprise described first switch, and the duration that described second round has is T 2, described second round is made up of N-1 continuous print subcycle, and the duration that in described N-1 continuous print subcycle, each subcycle has is T 2n-1 initial time of/(N-1), a described N-1 electric pulse is N-1 initial time of described N-1 continuous print subcycle respectively.
9. electric pressure converter according to claim 8, is characterized in that, described detecting unit specifically for:
Determine the value of the average current of described first-phase;
Determine the value of N number of average current of described N number of phase, described N number of and described N number of average current one_to_one corresponding;
When the value of the average current of described first-phase, with the difference of the mean value of the value of described N number of average current of described N number of phase, during more than the first value, determine described first-phase fault.
10. electric pressure converter according to claim 8, is characterized in that, described detecting unit specifically for:
Detect that described electric pressure converter is abnormal;
According to the result of described detection, disconnect described first-phase;
Determine when described first-phase is in the state of disconnection, and N-1 when being in the state of connection mutually, describedly extremely disappearing, described N-1 be mutually described N number of mutually in phase except described first-phase; And
Based on described abnormal situation about disappearing, determine described first-phase fault.
11. according to Claim 8 to 10 arbitrary described electric pressure converter, it is characterized in that, described control unit after described detecting unit determines described first-phase fault, also for:
Disconnect described first-phase.
Electric pressure converter described in 12. according to Claim 8 to 10 are arbitrary, it is characterized in that, described control unit is after described detecting unit determines described first-phase fault, and before N-1 the switch controlled in described N number of switch export a described N-1 electric pulse in described second round, also for:
Disconnect described N number of phase; And
Preserve the mark of described first-phase;
N-1 the switch that described control unit controls in described N number of switch exports a described N-1 electric pulse in described second round, specifically comprises:
According to the mark of described first-phase, determine N-1 switch in described N number of switch; And
Described N-1 the switch controlling to determine according to the mark of described first-phase exports a described N-1 electric pulse in described second round.
Electric pressure converter described in 13. according to Claim 8 to 10 are arbitrary, it is characterized in that, described control unit is after described detecting unit determines described first-phase fault, and before N-1 the switch controlled in described N number of switch export a described N-1 electric pulse in described second round, also for:
Disconnect described N number of phase; And
Preserve the mark of N-1 phase, described N-1 be mutually described N number of mutually in phase, described N-1 phase does not comprise described first-phase;
N-1 the switch that described control unit controls in described N number of switch exports a described N-1 electric pulse in described second round, specifically comprises:
According to the mark of a described N-1 phase, determine N-1 switch in described N number of switch; And
Described N-1 the switch controlling to determine according to the mark of a described N-1 phase exports N-1 electric pulse in the second cycle.
Electric pressure converter described in 14. according to Claim 8 to 13 are arbitrary, it is characterized in that, the duration of each electric pulse in described N number of electric pulse is T 3, the duration of each electric pulse in a described N-1 electric pulse is T 4, described T 3equal described T 4, described T 1equal described T 2.
CN201610019810.0A 2016-01-12 2016-01-12 Electric pressure converter fault handling method and electric pressure converter Active CN105450009B (en)

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

Applications Claiming Priority (1)

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

Publications (2)

Publication Number Publication Date
CN105450009A true CN105450009A (en) 2016-03-30
CN105450009B CN105450009B (en) 2018-03-09

Family

ID=55559896

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610019810.0A Active CN105450009B (en) 2016-01-12 2016-01-12 Electric pressure converter fault handling method and electric pressure converter

Country Status (2)

Country Link
CN (1) CN105450009B (en)
WO (1) WO2017121313A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017121313A1 (en) * 2016-01-12 2017-07-20 华为技术有限公司 Voltage converter fault processing method and voltage converter
CN110034543A (en) * 2019-03-20 2019-07-19 华为技术有限公司 Multi-phase buck translation circuit and its fault detection method, device and storage medium

Citations (3)

* Cited by examiner, † Cited by third party
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

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Patent Citations (3)

* Cited by examiner, † Cited by third party
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

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017121313A1 (en) * 2016-01-12 2017-07-20 华为技术有限公司 Voltage converter fault processing method and voltage converter
CN110034543A (en) * 2019-03-20 2019-07-19 华为技术有限公司 Multi-phase buck translation circuit and its fault detection method, device and storage medium
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
WO2020187090A1 (en) * 2019-03-20 2020-09-24 华为技术有限公司 Multi-phase buck conversion circuit, fault detection method and device therefor, and storage medium

Also Published As

Publication number Publication date
WO2017121313A1 (en) 2017-07-20
CN105450009B (en) 2018-03-09

Similar Documents

Publication Publication Date Title
JP5990158B2 (en) System for efficiently transferring collected vibrational energy to a battery and electronic device using the same
CN103558495B (en) A kind of multi-channel circuit on-off detection device
US8324875B2 (en) Multiphase DC/DC converter with output phases deviated from or aligned with each other and driven with fixed on time
US9608534B2 (en) Power conversion system, and voltage detection device thereof
US8410765B2 (en) Pulse modulation circuit and method
CN101902661A (en) Power supply system, communication device and power supply control method
US20140167779A1 (en) Ground Fault Detection System for a Power Supply System
JP5380041B2 (en) Multi-phase DC / DC converter
CN105337335A (en) Systems and methods for matching end of discharge for multiple batteries
CN104767236A (en) Charging circuit
KR20200032013A (en) Controller for buck dc/dc converter with effective decoupling
CN109155581B (en) Power conversion device
US20130076318A1 (en) Power supply control system and method
US20120319668A1 (en) Power supply circuit with protection circuit
CN103607120A (en) Control circuit and control method for programmable power adapter
CN105450009A (en) Voltage converter fault processing method and voltage converter
CN104081611A (en) Overvoltage protection system and method
CN109994998B (en) Motor back electromotive force protection method, system, device and storage medium
EP3905497A1 (en) Power conversion apparatus and power conversion method
EP2830204A1 (en) Usb interface power supply method and power supply device for time division multiple access load system
US11025165B2 (en) DC/DC converter control device
CN101728817A (en) Multi-axis driving system
CN103997327A (en) Wave losing detection circuit of drive signals and switching tube drive circuit
JP2017166938A (en) State monitoring device
JP4594218B2 (en) Inverter power supply and inverter system

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant