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

Voltage converter fault processing method and voltage converter Download PDF

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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
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phase
switches
phases
control circuit
cycle
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CN105450009B (en
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秦晓鹏
李少波
李杰红
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Huawei Technologies Co Ltd
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS 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
    • H02M1/00Details of apparatus for conversion
    • H02M1/32Means for protecting converters other than automatic disconnection
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS 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
    • H02M3/00Conversion of DC power input into DC power output
    • H02M3/02Conversion of DC power input into DC power output without intermediate conversion into AC
    • H02M3/04Conversion of DC power input into DC power output without intermediate conversion into AC by static converters
    • H02M3/10Conversion 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
    • H02M3/145Conversion 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
    • H02M3/155Conversion 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
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS 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
    • H02M1/00Details of apparatus for conversion
    • H02M1/32Means for protecting converters other than automatic disconnection
    • H02M1/325Means for protecting converters other than automatic disconnection with means for allowing continuous operation despite a fault, i.e. fault tolerant converters

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

Abstract

本申请提供电压转换器的故障处理方法及电压转换器。电压转换器包括控制电路以及N个相。控制电路控制所述N个相中的N个开关在第一周期中输出N个电脉冲,所述第一周期由N个连续的子周期组成,所述N个连续的子周期中每个子周期具有的时长是T1/N,所述N个电脉冲的N个起始时间分别是所述N个连续的子周期的N个起始时间。所述控制电路确定第一相故障。进一步地,所述控制电路控制所述N个相中除了所述第一相之外的N-1个相的N-1个开关,在第二周期中输出N-1个电脉冲。所述第二周期由N-1个连续的子周期组成,所述N-1个连续的子周期中每个子周期具有的时长是T2/(N-1),所述N-1个电脉冲的N-1个起始时间分别是所述N-1个连续的子周期的N-1个起始时间。

The present application provides a fault handling method for a voltage converter and the voltage converter. The voltage converter includes a control circuit and N phases. The control circuit controls the N switches in the N phases to output N electrical pulses in the first cycle, the first cycle is composed of N consecutive sub-cycles, and each sub-cycle in the N consecutive sub-cycles The duration is T 1 /N, and the N start times of the N electric pulses are respectively the N start times of the N consecutive sub-periods. The control circuit determines a first phase failure. Further, the control circuit controls N-1 switches of N-1 phases of the N phases except the first phase, and outputs N-1 electric pulses in the second period. The second cycle is composed of N-1 consecutive sub-cycles, the duration of each sub-cycle in the N-1 consecutive sub-cycles is T 2 /(N-1), and the N-1 electric The N-1 start times of the pulse are respectively the N-1 start times of the N-1 consecutive sub-periods.

Description

电压转换器故障处理方法及电压转换器Troubleshooting method of voltage converter and voltage converter

技术领域technical field

本发明涉及电路领域,尤其涉及电压转换器故障处理方法及电压转换器。The invention relates to the field of circuits, in particular to a voltage converter fault handling method and a voltage converter.

背景技术Background technique

电压转换器(英文:voltageconverter)是一种能够进行电压转换的装置。电压转换器可以为负载供电。电压转换器可以包括多个相(英文:phase),所述多个相均为所述负载供电。当所述电压转换器的一个相发生故障时,整个电压转换器无法正常工作。A voltage converter (English: voltage converter) is a device capable of voltage conversion. A voltage converter can supply power to the load. The voltage converter may include multiple phases (English: phase), and the multiple phases all supply power to the load. When one phase of the voltage converter fails, the entire voltage converter cannot function properly.

发明内容Contents of the invention

本申请实施例提供了一种电压转换器故障处理方法及电压转换器,在电压转换器的一个相发生故障时,能够对故障进行处理。Embodiments of the present application provide a voltage converter fault handling method and the voltage converter, which can handle the fault when a phase of the voltage converter fails.

本申请实施例提供的技术方案如下:The technical scheme provided by the embodiments of the present application is as follows:

第一方面,提供了一种电压转换器故障处理方法,所述电压转换器包括控制电路以及N个相,所述N个相包括N个开关,所述N个相与所述N个开关一一对应,N为大于2的整数,In a first aspect, a voltage converter fault handling method is provided, the voltage converter includes a control circuit and N phases, the N phases include N switches, and the N phases are identical to the N switches One-to-one correspondence, N is an integer greater than 2,

所述方法包括:The methods include:

所述控制电路控制所述N个开关在第一周期中输出N个电脉冲。所述N个开关与所述N个电脉冲一一对应,所述第一周期具有的时长是T1,所述第一周期由N个连续的子周期组成,所述N个连续的子周期中每个子周期具有的时长是T1/N,所述N个电脉冲的N个起始时间分别是所述N个连续的子周期的N个起始时间。The control circuit controls the N switches to output N electric pulses in the first cycle. The N switches correspond to the N electrical pulses one by one, the duration of the first cycle is T 1 , the first cycle is composed of N consecutive sub-cycles, and the N consecutive sub-cycles The duration of each sub-period is T 1 /N, and the N starting times of the N electrical pulses are respectively the N starting times of the N consecutive sub-periods.

所述控制电路控制所述N个开关在所述第一周期中输出所述N个电脉冲后,所述控制电路确定第一相故障。所述第一相是所述N个相中的一个相,所述第一相中包括第一开关,所述第一开关是所述N个开关中的一个开关。After the control circuit controls the N switches to output the N electrical pulses in the first cycle, the control circuit determines that the first phase is faulty. The first phase is one of the N phases, the first phase includes a first switch, and the first switch is one of the N switches.

所述控制电路确定所述第一相故障之后,所述控制电路控制所述N个开关中的N-1个开关在第二周期中输出N-1个电脉冲。所述N-1个开关与所述N-1个电脉冲一一对应,所述N-1个开关不包括所述第一开关,所述第二周期具有的时长是T2,所述第二周期由N-1个连续的子周期组成,所述N-1个连续的子周期中每个子周期具有的时长是T2/(N-1),所述N-1个电脉冲的N-1个起始时间分别是所述N-1个连续的子周期的N-1个起始时间。After the control circuit determines that the first phase is faulty, the control circuit controls N-1 switches among the N switches to output N-1 electrical pulses in the second cycle. The N-1 switches are in one-to-one correspondence with the N-1 electrical pulses, the N-1 switches do not include the first switch, the duration of the second cycle is T 2 , and the first The second cycle consists of N-1 consecutive sub-cycles, the duration of each sub-cycle in the N-1 consecutive sub-cycles is T 2 /(N-1), and the N of the N-1 electric pulses The -1 start times are respectively the N-1 start times of the N-1 consecutive sub-periods.

通过上述方案,控制电路确定电压转换器的N个相中的一个相故障后,设置所述N个相中能够正常工作的N-1个相中的开关输出电脉冲的起始时间,使所述电压转换器能够输出平稳的电压。因此,上述技术方案能够对电压转换器的故障进行处理,使得电压转换器能够正常工作。Through the above solution, after the control circuit determines that one of the N phases of the voltage converter is faulty, it sets the start time of the switches in the N-1 phases that can work normally among the N phases to output electric pulses, so that all The voltage converter described above can output a stable voltage. Therefore, the above technical solution can handle the fault of the voltage converter, so that the voltage converter can work normally.

可选的,在一种示例中,所述控制电路确定第一相故障,包括:所述控制电路确定所述第一相的平均电流的值;所述控制电路获取所述N个相的N个平均电流的值,所述N个相与所述N个平均电流一一对应;当所述第一相的平均电流的值,与所述N个相的所述N个平均电流的值的平均值之差,超过第一值时,所述控制电路确定所述第一相故障。Optionally, in an example, the control circuit determining the first phase fault includes: the control circuit determining the value of the average current of the first phase; the control circuit obtaining the N phases of the N phases The values of the average currents, the N phases correspond to the N average currents one by one; when the value of the average current of the first phase is the same as the value of the N average currents of the N phases When the difference between the average values exceeds a first value, the control circuit determines that the first phase is faulty.

通过定期测量每个相的平均电流的值并确定每个相的平均电流的值是否在预设范围之内,所述控制电路可以在不影响系统运行的情况下,自动确定所述第一相故障。By regularly measuring the value of the average current of each phase and determining whether the value of the average current of each phase is within a preset range, the control circuit can automatically determine the value of the first phase without affecting the operation of the system. Fault.

可选的,在另一种示例中,所述控制电路确定第一相故障,包括:所述控制电路检测到所述电压转换器异常;所述控制电路根据所述检测的结果,断开所述第一相;所述控制电路确定,当所述第一相处于断开的状态,并且N-1个相处于接通的状态时,所述异常消失,所述N-1个相是所述N个相中除所述第一相之外的相;所述控制电路基于所述异常消失的情况,确定所述第一相故障。Optionally, in another example, the control circuit determines that the first phase fault includes: the control circuit detects that the voltage converter is abnormal; the control circuit disconnects all the first phase; the control circuit determines that when the first phase is in the off state and N-1 phases are in the on state, the abnormality disappears, and the N-1 phases are the Phases other than the first phase among the N phases; the control circuit determines that the first phase is faulty based on the disappearance of the abnormality.

可选的,所述控制电路确定所述第一相故障后,所述方法还包括:所述控制电路断开所述第一相。Optionally, after the control circuit determines that the first phase is faulty, the method further includes: the control circuit disconnects the first phase.

可选的,在一种示例中,所述控制电路确定所述第一相故障之后,以及所述控制电路控制所述N个开关中的N-1个开关在所述第二周期中输出所述N-1个电脉冲之前,所述方法还包括:所述控制电路断开所述N个相;以及所述控制电路保存所述第一相的标识。所述控制电路控制所述N个开关中的N-1个开关在所述第二周期中输出所述N-1个电脉冲,具体包括:所述控制电路根据所述第一相的标识,确定所述N个开关中的N-1个开关;以及所述控制电路控制根据所述第一相的标识确定的所述N-1个开关在所述第二周期中输出所述N-1个电脉冲。Optionally, in an example, after the control circuit determines that the first phase is faulty, and the control circuit controls N-1 switches among the N switches to output the Before the N-1 electric pulses, the method further includes: the control circuit disconnects the N phases; and the control circuit saves the identification of the first phase. The control circuit controls N-1 switches among the N switches to output the N-1 electric pulses in the second period, specifically including: the control circuit according to the identification of the first phase, determining N-1 switches among the N switches; and the control circuit controls the N-1 switches determined according to the identification of the first phase to output the N-1 switches in the second cycle an electric pulse.

可选的,在另一种示例中,所述控制电路确定所述第一相故障之后,以及所述控制电路控制所述N个开关中的N-1个开关在所述第二周期中输出所述N-1个电脉冲之前,所述方法还包括:所述控制电路断开所述N个相;以及所述控制电路保存N-1个相的标识,所述N-1个相是所述N个相中的相,所述N-1个相不包括所述第一相。所述控制电路控制所述N个开关中的N-1个开关在所述第二周期中输出所述N-1个电脉冲,具体包括:所述控制电路根据所述N-1个相的标识,确定所述N个开关中的N-1个开关;以及所述控制电路控制根据所述N-1个相的标识确定的所述N-1个开关在第二周期中输出N-1个电脉冲。Optionally, in another example, after the control circuit determines that the first phase is faulty, and the control circuit controls N-1 switches among the N switches to output Before the N-1 electric pulses, the method further includes: the control circuit disconnects the N phases; and the control circuit saves the identification of the N-1 phases, and the N-1 phases are Among the N phases, the N-1 phases do not include the first phase. The control circuit controls N-1 switches among the N switches to output the N-1 electrical pulses in the second cycle, specifically including: the control circuit according to the N-1 phases identification, determining N-1 switches among the N switches; and the control circuit controls the N-1 switches determined according to the identification of the N-1 phases to output N-1 in the second cycle an electric pulse.

通过保存所述第一相的标识,或者保存所述N-1个相的标识,所述控制电路在断开所述N个开关并重新启动开关时,直接启动所述N-1个相,使所述电压转换器能够正常工作。By storing the identification of the first phase, or storing the identification of the N-1 phases, the control circuit directly starts the N-1 phases when the N switches are turned off and the switches are restarted, enable the voltage converter to work properly.

第二方面,提供了一种电压转换器,所述电压转换器包括控制单元,检测单元以及N个相,所述N个相包括N个开关,所述N个相与所述N个开关一一对应,N为大于2的整数。In a second aspect, a voltage converter is provided, the voltage converter includes a control unit, a detection unit and N phases, the N phases include N switches, and the N phases are identical to the N switches One-to-one correspondence, N is an integer greater than 2.

所述控制单元,用于控制所述N个开关在第一周期中输出N个电脉冲,所述N个开关与所述N个电脉冲一一对应,所述第一周期具有的时长是T1,所述第一周期由N个连续的子周期组成,所述N个连续的子周期中每个子周期具有的时长是T1/N,所述N个电脉冲的N个起始时间分别是所述N个连续的子周期的N个起始时间。The control unit is configured to control the N switches to output N electric pulses in a first cycle, the N switches correspond to the N electric pulses one by one, and the duration of the first cycle is T1 , the first cycle is composed of N consecutive sub-cycles, the duration of each sub-cycle in the N consecutive sub-cycles is T 1 /N, and the N starting times of the N electric pulses are respectively N start times of the N consecutive sub-periods.

所述检测单元,用于在所述控制单元控制所述N个开关在所述第一周期中输出所述N个电脉冲后,确定第一相故障,所述第一相是所述N个相中的一个相,所述第一相中包括第一开关,所述第一开关是所述N个开关中的一个开关。The detection unit is configured to determine that the first phase is faulty after the control unit controls the N switches to output the N electrical pulses in the first cycle, and the first phase is the N One of the phases, the first phase includes a first switch, and the first switch is one of the N switches.

所述控制单元还用于,在所述检测单元确定所述第一相故障之后,控制所述N个开关中的N-1个开关在第二周期中输出N-1个电脉冲,所述N-1个开关与所述N-1个电脉冲一一对应,所述N-1个开关不包括所述第一开关,所述第二周期具有的时长是T2,所述第二周期由N-1个连续的子周期组成,所述N-1个连续的子周期中每个子周期具有的时长是T2/(N-1),所述N-1个电脉冲的N-1个起始时间分别是所述N-1个连续的子周期的N-1个起始时间。The control unit is further configured to control N-1 switches among the N switches to output N-1 electrical pulses in a second cycle after the detection unit determines that the first phase is faulty, the The N-1 switches correspond to the N-1 electrical pulses one by one, the N-1 switches do not include the first switch, the duration of the second cycle is T 2 , and the second cycle It consists of N-1 consecutive sub-cycles, the duration of each sub-cycle in the N-1 consecutive sub-cycles is T 2 /(N-1), and the N-1 of the N-1 electric pulses The start times are respectively the N-1 start times of the N-1 consecutive sub-periods.

该方案与第一方面的方案具有相同的技术效果。This solution has the same technical effect as the solution in the first aspect.

可选的,在一种示例中,所述检测单元具体用于:确定所述第一相的平均电流的值;获取所述N个相的N个平均电流的值,所述N个相与所述N个平均电流的值一一对应;当所述第一相的平均电流的值,与所述N个相的所述N个平均电流的值的平均值之差,超过第一值时,确定所述第一相故障。Optionally, in an example, the detection unit is specifically configured to: determine the value of the average current of the first phase; obtain the values of N average currents of the N phases, and the N phases and The values of the N average currents correspond one-to-one; when the difference between the average current value of the first phase and the average value of the N average current values of the N phases exceeds the first value , to determine the first phase fault.

可选的,在另一种示例中,所述检测单元具体用于:检测到所述电压转换器异常;根据所述检测的结果,断开所述第一相;确定当所述第一相处于断开的状态,并且N-1个相处于接通的状态时,所述异常消失,所述N-1个相是所述N个相中除所述第一相之外的相;以及基于所述异常消失的情况,确定所述第一相故障。Optionally, in another example, the detection unit is specifically configured to: detect that the voltage converter is abnormal; disconnect the first phase according to the detection result; determine when the first phase The abnormality disappears when it is in an off state and N-1 phases are in an on state, and the N-1 phases are phases other than the first phase among the N phases; and Based on the disappearance of the abnormality, it is determined that the first phase is faulty.

可选的,所述控制单元在所述检测单元确定所述第一相故障后,还用于:断开所述第一相。Optionally, after the detection unit determines that the first phase is faulty, the control unit is further configured to: disconnect the first phase.

可选的,在一种示例中,所述检测单元确定所述第一相故障之后,以及控制所述N个开关中的N-1个开关在所述第二周期中输出所述N-1个电脉冲之前,还用于:断开所述N个相;以及保存所述第一相的标识。所述控制单元控制所述N个开关中的N-1个开关在所述第二周期中输出所述N-1个电脉冲,具体包括:根据所述第一相的标识,确定所述N个开关中的N-1个开关;以及控制根据所述第一相的标识确定的所述N-1个开关在所述第二周期中输出所述N-1个电脉冲。Optionally, in an example, after the detection unit determines that the first phase is faulty, and controls N-1 switches among the N switches to output the N-1 switches in the second cycle. Before the electrical pulses, it is also used to: disconnect the N phases; and save the identification of the first phase. The control unit controls N-1 switches in the N switches to output the N-1 electrical pulses in the second cycle, which specifically includes: determining the N N-1 switches among the switches; and controlling the N-1 switches determined according to the identification of the first phase to output the N-1 electrical pulses in the second cycle.

可选的,在另一种示例中,所述控制单元在所述检测单元确定所述第一相故障之后,以及控制所述N个开关中的N-1个开关在所述第二周期中输出所述N-1个电脉冲之前,还用于:断开所述N个相;以及保存N-1个相的标识,所述N-1个相是所述N个相中的相,所述N-1个相不包括所述第一相。所述控制单元控制所述N个开关中的N-1个开关在所述第二周期中输出所述N-1个电脉冲,具体包括:根据所述N-1个相的标识,确定所述N个开关中的N-1个开关;以及控制根据所述N-1个相的标识确定的所述N-1个开关在第二周期中输出N-1个电脉冲。Optionally, in another example, the control unit controls N-1 switches among the N switches in the second period after the detection unit determines that the first phase is faulty. Before outputting the N-1 electric pulses, it is also used to: disconnect the N phases; and save the identification of the N-1 phases, the N-1 phases are phases of the N phases, The N-1 phases do not include the first phase. The control unit controls N-1 switches among the N switches to output the N-1 electric pulses in the second cycle, which specifically includes: determining the N-1 switches among the N switches; and controlling the N-1 switches determined according to the identification of the N-1 phases to output N-1 electrical pulses in the second cycle.

第三方面,提供了一种电压转换器,所述电压转换器包括处理器、存储器以及N个相,所述处理器与所述存储器耦合,所述处理器与所述N个相耦合,所述N个相包括N个开关,所述N个相与所述N个开关一一对应,N为大于2的整数。In a third aspect, a voltage converter is provided, the voltage converter includes a processor, a memory, and N phases, the processor is coupled to the memory, the processor is coupled to the N phases, the The N phases include N switches, the N phases correspond to the N switches one by one, and N is an integer greater than 2.

所述存储器用于存储计算机程序。所述处理器用于通过访问所述计算机程序,执行以下操作:The memory is used to store computer programs. The processor is configured to perform the following operations by accessing the computer program:

控制所述N个开关在第一周期中输出N个电脉冲,所述N个开关与所述N个电脉冲一一对应,所述第一周期具有的时长是T1,所述第一周期由N个连续的子周期组成,所述N个连续的子周期中每个子周期具有的时长是T1/N,所述N个电脉冲的N个起始时间分别是所述N个连续的子周期的N个起始时间;Controlling the N switches to output N electrical pulses in the first period, the N switches correspond to the N electrical pulses one by one, the duration of the first period is T1, and the first period is determined by It consists of N consecutive sub-cycles, the duration of each sub-cycle in the N consecutive sub-cycles is T 1 /N, and the N starting times of the N electric pulses are respectively the duration of the N consecutive sub-cycles. N start times of the cycle;

所述N个开关在所述第一周期中输出所述N个电脉冲后,确定第一相故障,所述第一相是所述N个相中的一个相,所述第一相中包括第一开关,所述第一开关是所述N个开关中的一个开关;以及After the N switches output the N electrical pulses in the first period, it is determined that the first phase is faulty, the first phase is one of the N phases, and the first phase includes a first switch, the first switch being one of the N switches; and

确定所述第一相故障之后,控制所述N个开关中的N-1个开关在第二周期中输出N-1个电脉冲,所述N-1个开关与所述N-1个电脉冲一一对应,所述N-1个开关不包括所述第一开关,所述第二周期具有的时长是T2,所述第二周期由N-1个连续的子周期组成,所述N-1个连续的子周期中每个子周期具有的时长是T2/(N-1),所述N-1个电脉冲的N-1个起始时间分别是所述N-1个连续的子周期的N-1个起始时间。After determining the first phase fault, controlling N-1 switches among the N switches to output N-1 electrical pulses in the second cycle, the N-1 switches and the N-1 electrical pulses One-to-one pulse correspondence, the N-1 switches do not include the first switch, the duration of the second cycle is T 2 , the second cycle consists of N-1 consecutive sub-cycles, the The duration of each sub-cycle in N-1 consecutive sub-cycles is T 2 /(N-1), and the N-1 start times of the N-1 electric pulses are respectively the N-1 consecutive The N-1 start times of the subperiod.

该方案与第一方面的方案具有相同的技术效果。This solution has the same technical effect as the solution in the first aspect.

可选的,在一种示例中,所述处理器执行确定第一相故障,具体包括:确定所述第一相的平均电流的值;确定所述N个相的N个平均电流的值,所述N个相与所述N个平均电流的值一一对应;当所述第一相的平均电流的值,与所述N个相的所述N个平均电流的值的平均值之差,超过第一值时,确定所述第一相故障。Optionally, in an example, the processor executes determining the first phase fault, which specifically includes: determining an average current value of the first phase; determining N average current values of the N phases, The N phases correspond to the N average current values one by one; when the average current value of the first phase is different from the average value of the N average current values of the N phases , when a first value is exceeded, the first phase fault is determined.

可选的,在另一种示例中,所述处理器执行确定第一相故障,具体包括:检测到所述电压转换器异常;根据所述检测的结果,断开所述第一相;确定当所述第一相处于断开的状态,并且N-1个相处于接通的状态时,所述异常消失,所述N-1个相是所述N个相中除所述第一相之外的相;以及基于所述异常消失的情况,确定所述第一相故障。Optionally, in another example, the processor executes determining the fault of the first phase, which specifically includes: detecting that the voltage converter is abnormal; disconnecting the first phase according to the detection result; determining When the first phase is in the off state and N-1 phases are in the on state, the abnormality disappears, and the N-1 phases are the N phases except the first phase and determining that the first phase is faulty based on disappearance of the abnormality.

可选的,所述处理器读取所述计算机程序,进一步执行:在确定所述第一相故障后,断开所述第一相。Optionally, the processor reads the computer program, and further executes: disconnecting the first phase after determining that the first phase is faulty.

可选的,在一种示例中,所述处理器在确定所述第一相故障之后,以及控制所述N个开关中的N-1个开关在所述第二周期中输出所述N-1个电脉冲之前,还执行:断开所述N个相;以及保存所述第一相的标识。所述控制所述N个开关中的N-1个开关在所述第二周期中输出所述N-1个电脉冲,具体包括:根据所述第一相的标识,确定所述N个开关中的N-1个开关;以及控制根据所述第一相的标识确定的所述N-1个开关在所述第二周期中输出所述N-1个电脉冲。Optionally, in an example, after determining that the first phase is faulty, the processor controls N-1 switches among the N switches to output the N- Before 1 electrical pulse, further perform: disconnecting the N phases; and saving the identity of the first phase. The controlling N-1 switches among the N switches to output the N-1 electrical pulses in the second cycle specifically includes: determining the N switches according to the identification of the first phase and controlling the N-1 switches determined according to the identification of the first phase to output the N-1 electrical pulses in the second cycle.

可选的,在另一种示例中,所述处理器确定所述第一相故障之后,以及控制所述N个开关中的N-1个开关在所述第二周期中输出所述N-1个电脉冲之前,还执行:断开所述N个相;以及保存N-1个相的标识,所述N-1个相是所述N个相中的相,所述N-1个相不包括所述第一相。所述控制所述N个开关中的N-1个开关在所述第二周期中输出所述N-1个电脉冲,具体包括:根据所述N-1个相的标识,确定所述N个开关中的N-1个开关;以及所述控制电路控制根据所述N-1个相的标识确定的所述N-1个开关在第二周期中输出N-1个电脉冲。Optionally, in another example, after the processor determines that the first phase is faulty, and controls N-1 switches among the N switches to output the N- Before 1 electrical pulse, further perform: disconnecting the N phases; and saving the identification of the N-1 phases, the N-1 phases being phases of the N phases, and the N-1 phases phases do not include the first phase. The controlling N-1 switches among the N switches to output the N-1 electrical pulses in the second period specifically includes: determining the N-1 electrical pulses according to the identifications of the N-1 phases N-1 switches among the switches; and the control circuit controls the N-1 switches determined according to the identifiers of the N-1 phases to output N-1 electrical pulses in the second period.

基于上述第一方面,第二方面或第三方面中的任一方面,可选的,所述N个电脉冲中的每个电脉冲的时长是T3,所述N-1个电脉冲中的每个电脉冲的时长是T4,所述T3等于所述T4,所述T1等于所述T2Based on any one of the first aspect, the second aspect or the third aspect, optionally, the duration of each of the N electric pulses is T 3 , and the N-1 electric pulses The duration of each electric pulse is T 4 , the T 3 is equal to the T 4 , and the T 1 is equal to the T 2 .

基于上述第一方面,第二方面或第三方面中的任一方面,可选的,所述电压转换器是直流转直流转换器(英文:DCtoDCconverter)。Based on any one of the first aspect, the second aspect or the third aspect, optionally, the voltage converter is a direct current to direct current converter (English: DCtoDCconverter).

基于上述第一方面,第二方面或第三方面中的任一方面,可选的,所述电压转换器是降压转换器(英文:buckconverter)。Based on any one of the first aspect, the second aspect or the third aspect, optionally, the voltage converter is a step-down converter (English: buck converter).

基于上述第一方面,第二方面或第三方面中的任一方面,可选的,所述电压转换器是电压调节模块(英文:voltageregulatormodule,简称:VRM)。Based on any one of the first aspect, the second aspect or the third aspect, optionally, the voltage converter is a voltage regulator module (English: voltage regulator module, VRM for short).

附图说明Description of drawings

为了更清楚地说明本申请实施例的技术方案,下面将对实施例涉及的附图作一简单地介绍。显而易见地,下面的附图是本发明的一些实施例。对于本领域普通技术人员来讲,在不付出创造性劳动性的前提下,还可以根据这些附图获得其他的附图。In order to illustrate the technical solutions of the embodiments of the present application more clearly, the following briefly introduces the drawings related to the embodiments. Obviously, the following figures are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained based on these drawings without any creative effort.

图1为本申请实施例提供的一种应用场景示意图。FIG. 1 is a schematic diagram of an application scenario provided by an embodiment of the present application.

图2为本申请实施例提供的一种电压转换器故障处理方法流程图。FIG. 2 is a flow chart of a method for troubleshooting a voltage converter provided in an embodiment of the present application.

图3为本申请实施例提供的一种控制电路的结构示意图。FIG. 3 is a schematic structural diagram of a control circuit provided by an embodiment of the present application.

图4为本申请实施例提供的一种电脉冲的波形示意图。FIG. 4 is a schematic diagram of a waveform of an electric pulse provided by an embodiment of the present application.

图5为本申请实施例提供的一种电脉冲的波形示意图。FIG. 5 is a schematic diagram of a waveform of an electric pulse provided by an embodiment of the present application.

图6是本申请实施例提供的一种电压转换器的结构示意图。Fig. 6 is a schematic structural diagram of a voltage converter provided by an embodiment of the present application.

具体实施方式detailed description

本申请实施例中“第一”,“第二”以及“第三”,仅用于区分不同的对象。不用于限定不同的对象的顺序。例如,实施例中提及第一开关、第二开关以及第三开关。第一开关与第二开关不是同一个开关。第二开关与第三开关不是同一个开关。第一开关与第三开关不是同一个开关。"First", "second" and "third" in this embodiment of the present application are only used to distinguish different objects. Not used to limit the order of the different objects. For example, the embodiments mention a first switch, a second switch and a third switch. The first switch and the second switch are not the same switch. The second switch and the third switch are not the same switch. The first switch and the third switch are not the same switch.

图1是本申请实施例提供的一种应用场景示意图。如图1所示的系统中,包括电压转换器110和负载120。电压转换器110中包括控制电路111和三个相。第一相112包括第一开关115和与所述第一开关115耦合的电感L1。第二相113包括第二开关116和与所述第二开关116耦合的电感L2。第三相114包括第三开关117和与所述第三开关117耦合的电感L3。图1中所示的A点、C点以及E点分别是第一开关115,第二开关116以及第三开关117的输出端。在所述电压转换器110正常向所述负载120供电时,第一开关115,第二开关116以及第三开关117分别在其相应的输出端周期性地输出电脉冲。第一开关115,第二开关116以及第三开关117输出的电脉冲的起始时间在一个周期中通常是均匀分布的。B点、D点以及F点分别是所述第一相112,所述第二相113以及所述第三相114的输出端。每个相的输出端和负载120之间,还包括电容C1。第一开关115,第二开关116以及第三开关117输出的电脉冲经过电感以及电容C1处理后,到达负载120。从而,电压转换器110能够向所述负载120提供平稳的直流电压。FIG. 1 is a schematic diagram of an application scenario provided by an embodiment of the present application. The system shown in FIG. 1 includes a voltage converter 110 and a load 120 . The voltage converter 110 includes a control circuit 111 and three phases. The first phase 112 includes a first switch 115 and an inductor L1 coupled to the first switch 115 . The second phase 113 includes a second switch 116 and an inductor L2 coupled to the second switch 116 . The third phase 114 includes a third switch 117 and an inductor L3 coupled to the third switch 117 . Point A, point C and point E shown in FIG. 1 are the output terminals of the first switch 115 , the second switch 116 and the third switch 117 respectively. When the voltage converter 110 supplies power to the load 120 normally, the first switch 115 , the second switch 116 and the third switch 117 periodically output electric pulses at their corresponding output terminals. The start times of the electric pulses output by the first switch 115 , the second switch 116 and the third switch 117 are generally evenly distributed in one cycle. Point B, point D and point F are the output terminals of the first phase 112 , the second phase 113 and the third phase 114 respectively. A capacitor C1 is also included between the output terminal of each phase and the load 120 . The electric pulses output by the first switch 115 , the second switch 116 and the third switch 117 reach the load 120 after being processed by the inductor and the capacitor C1 . Therefore, the voltage converter 110 can provide a stable DC voltage to the load 120 .

举例来说,所述电压转换器110可以是直流(英文:directcurrent,简称:DC)转直流转换器(英文:DCtoDCconverter)。DCtoDCconverter能够将输入所述DCtoDCconverter的第一直流电压转换成第二直流电压,并输出所述第二直流电压,例如,向负载120输出所述第二幅度的直流电压。所述第一直流电压的电压值和所述第二直流电压的电压值不同。For example, the voltage converter 110 may be a direct current (English: direct current, DC for short) to direct current converter (English: DCtoDC converter). The DCtoDCconverter can convert the first DC voltage input into the DCtoDCconverter into a second DC voltage, and output the second DC voltage, for example, output the DC voltage of the second magnitude to the load 120 . The voltage value of the first DC voltage is different from the voltage value of the second DC voltage.

举例来说,所述电压转换器110可以采用多相(英文:multi-phase)电压调节模块(英文:voltageregulatormodule,简称:VRM)实现。VRM可以是为中央处理器(英文:centralprocessingunit,简称:CPU)供电的降压转换器(英文:buckconverter)。VRM可以将输入所述VRM的第一直流电压,调节为CPU所需的第二直流电压。所述第一直流电压的电压值大于所述第二直流电压的电压值。例如,所述第一电压的电压值可以是5V或12V。图1中所示的第一开关115,第二开关116以及第三开关117可以分别用于实现所述VRM中多个相位的输出。例如,所述VRM以及本申请实施例中的脉冲宽度调制(英文:pulsewidthmodule,简称:PWM)模块的具体实现,可以参见英特尔公司2010年6月发布的VR12/IMVP7脉冲宽度调制规范(英文:VR12/IMVP7PulseWidthModulationSpecification)。For example, the voltage converter 110 may be implemented by using a multi-phase (English: multi-phase) voltage regulation module (English: voltageregulatormodule, VRM for short). The VRM may be a step-down converter (English: buck converter) for supplying power to a central processing unit (English: central processing unit, CPU for short). The VRM can adjust the first DC voltage input to the VRM to the second DC voltage required by the CPU. The voltage value of the first DC voltage is greater than the voltage value of the second DC voltage. For example, the voltage value of the first voltage may be 5V or 12V. The first switch 115 , the second switch 116 and the third switch 117 shown in FIG. 1 can be respectively used to realize the output of multiple phases in the VRM. For example, for the specific implementation of the VRM and the pulse width modulation (English: pulsewidthmodule, PWM) module in the embodiment of the present application, please refer to the VR12/IMVP7 pulse width modulation specification (English: VR12 PWM) issued by Intel Corporation in June 2010. /IMVP7PulseWidthModulationSpecification).

当电压转换器110中的一个相,例如所述第一相112出现故障时,电压转换器110无法正常对负载120供电。例如,在一个周期内,如果电压转换器110正常工作,则第一开关115在第一预设时间输出第一电脉冲,第二开关116在第二预设时间输出第二电脉冲,第三开关117在第三预设时间输出第三电脉冲。当第一相112出现故障时,第一开关115可能无法在所述第一预设时间输出所述第一电脉冲。也就是说,一个周期可能只有两个电脉冲。并且两个电脉冲在一个周期中不是均匀分布的。电压转换器输出的电压是不平稳的电压。因此,当电压转换器110中的一个相出现故障时,电压转换器110无法正常对负载120供电。When a phase in the voltage converter 110 , such as the first phase 112 fails, the voltage converter 110 cannot normally supply power to the load 120 . For example, in one cycle, if the voltage converter 110 works normally, the first switch 115 outputs a first electric pulse at a first preset time, the second switch 116 outputs a second electric pulse at a second preset time, and the third switch 115 outputs a second electric pulse at a second preset time. The switch 117 outputs a third electrical pulse at a third preset time. When the first phase 112 fails, the first switch 115 may fail to output the first electrical pulse within the first preset time. That is, a cycle may only have two electrical pulses. And the two electrical pulses are not evenly distributed in one cycle. The output voltage of the voltage converter is an unsteady voltage. Therefore, when a phase of the voltage converter 110 fails, the voltage converter 110 cannot normally supply power to the load 120 .

图2为本申请实施例提供的一种电压转换器故障检测方法流程图。图2所示的方法可以用于图1的电路结构中,从而实现图1中控制电路的功能。例如,当图1中的某一个相出现故障时,可以采用图2所示的方法对所述故障进行处理。图2所示的方法中的所述电压转换器包括控制电路以及N个相,所述N个相包括N个开关,所述N个相与所述N个开关一一对应,N为大于2的整数。Fig. 2 is a flowchart of a voltage converter fault detection method provided by an embodiment of the present application. The method shown in FIG. 2 can be used in the circuit structure in FIG. 1 to realize the functions of the control circuit in FIG. 1 . For example, when a certain phase in FIG. 1 fails, the method shown in FIG. 2 may be used to handle the failure. The voltage converter in the method shown in FIG. 2 includes a control circuit and N phases, the N phases include N switches, the N phases correspond to the N switches one by one, and N is greater than 2 an integer of .

所述方法包括S201、S202以及S203。The method includes S201, S202 and S203.

S201,所述控制电路控制所述N个开关在第一周期中输出N个电脉冲。S201. The control circuit controls the N switches to output N electrical pulses in a first period.

所述N个开关与所述N个电脉冲一一对应,所述第一周期具有的时长是T1,所述第一周期由N个连续的子周期组成,所述N个连续的子周期中每个子周期具有的时长是T1/N,所述N个电脉冲的N个起始时间分别是所述N个连续的子周期的N个起始时间。The N switches correspond to the N electrical pulses one by one, the duration of the first cycle is T 1 , the first cycle is composed of N consecutive sub-cycles, and the N consecutive sub-cycles The duration of each sub-period is T 1 /N, and the N starting times of the N electrical pulses are respectively the N starting times of the N consecutive sub-periods.

具体来说,所述N个电脉冲与所述N个起始时间一一对应。所述N个电脉冲中每个电脉冲具有一个起始时间。所述N个电脉冲的N个起始时间分别是所述N个连续的子周期的N个起始时间。Specifically, the N electrical pulses are in one-to-one correspondence with the N starting times. Each of the N electrical pulses has a start time. The N starting times of the N electrical pulses are respectively the N starting times of the N consecutive sub-periods.

S202,所述控制电路控制所述N个开关在所述第一周期中输出所述N个电脉冲后,所述控制电路确定第一相故障。S202. After the control circuit controls the N switches to output the N electrical pulses in the first period, the control circuit determines that the first phase is faulty.

所述第一相是所述N个相中的一个相,所述第一相中包括第一开关,所述第一开关是所述N个开关中的一个开关。The first phase is one of the N phases, the first phase includes a first switch, and the first switch is one of the N switches.

S203,所述控制电路确定所述第一相故障之后,所述控制电路控制所述N个开关中的N-1个开关在第二周期中输出N-1个电脉冲。S203. After the control circuit determines that the first phase is faulty, the control circuit controls N-1 switches among the N switches to output N-1 electrical pulses in a second period.

所述N-1个开关与所述N-1个电脉冲一一对应,所述N-1个开关不包括所述第一开关,所述第二周期具有的时长是T2,所述第二周期由N-1个连续的子周期组成,所述N-1个连续的子周期中每个子周期具有的时长是T2/(N-1),所述N-1个电脉冲的N-1个起始时间分别是所述N-1个连续的子周期的N-1个起始时间。The N-1 switches are in one-to-one correspondence with the N-1 electrical pulses, the N-1 switches do not include the first switch, the duration of the second cycle is T 2 , and the first The second cycle consists of N-1 consecutive sub-cycles, the duration of each sub-cycle in the N-1 consecutive sub-cycles is T 2 /(N-1), and the N of the N-1 electric pulses The -1 start times are respectively the N-1 start times of the N-1 consecutive sub-periods.

具体来说,所述N-1个电脉冲与所述N-1个起始时间一一对应。所述N个电脉冲中每个电脉冲具有一个起始时间。所述N-1个电脉冲的N个起始时间分别是所述N-1个连续的子周期的N-1个起始时间。Specifically, the N-1 electrical pulses are in one-to-one correspondence with the N-1 start times. Each of the N electrical pulses has a start time. The N starting times of the N-1 electrical pulses are respectively the N-1 starting times of the N-1 consecutive sub-periods.

本申请中的N个连续的子周期是指N个连续的子周期中相邻子周期中一个子周期的结束时间等于另一个子周期的开始时间。例如,N个连续的子周期包括第一子周期、第二子周期以及第三子周期。第一子周期和第二子周期是相邻的子周期。第二子周期和第三子周期是相邻的子周期。第一子周期先于第二子周期。第二子周期先于第三子周期。第一周期的结束时间等于第二子周期的开始时间。第二周期的结束时间等于第三子周期的开始时间。The N consecutive sub-periods in this application means that among the N consecutive sub-periods, the end time of one sub-period is equal to the start time of another sub-period in the adjacent sub-periods. For example, N consecutive sub-periods include a first sub-period, a second sub-period and a third sub-period. The first sub-period and the second sub-period are adjacent sub-periods. The second sub-period and the third sub-period are adjacent sub-periods. The first sub-period precedes the second sub-period. The second sub-period precedes the third sub-period. The end time of the first period is equal to the start time of the second sub-period. The end time of the second period is equal to the start time of the third sub-period.

同理,本申请中的N-1个连续的子周期是指N-1个连续的子周期中相邻子周期中一个子周期的结束时间等于另一个子周期的开始时间。Similarly, the N-1 consecutive sub-periods in this application means that among the N-1 consecutive sub-periods, the end time of one sub-period in the adjacent sub-periods is equal to the start time of another sub-period.

图1中的控制电路111可以用于实现图2所示的方法中的控制电路。图1中的第一开关115,第二开关116以及第三开关117,可以用于实现图2所示的方法中的N个开关。N为大于2的整数。图1中的N等于3。当然,图1中也可以包括更多的开关,从而实现图2所示的方法中,N可以为大于3的场景。下文仅以图1所示的N等于3为例,对图2所示的方法进行举例说明。图1中的所述第一相112,所述第二相113以及所述第三相114,可以用于实现图2所述的方法中的N个相。The control circuit 111 in FIG. 1 can be used to implement the control circuit in the method shown in FIG. 2 . The first switch 115 , the second switch 116 and the third switch 117 in FIG. 1 can be used to realize the N switches in the method shown in FIG. 2 . N is an integer greater than 2. N in Fig. 1 is equal to 3. Of course, more switches may also be included in FIG. 1 , so as to realize the scenario where N may be greater than 3 in the method shown in FIG. 2 . The method shown in FIG. 2 will be described below only by taking N equal to 3 shown in FIG. 1 as an example. The first phase 112 , the second phase 113 and the third phase 114 in FIG. 1 can be used to implement the N phases in the method shown in FIG. 2 .

图3为实施例提供的一种控制电路的结构示意图。图3中的控制电路300可以用于执行图2所述的方法。具体来说,控制电路300可以用于实现图2所示的方法中的控制电路。所述控制电路300可以用于实现图1所示的控制电路111。如图3所示,控制电路300包括故障控制模块310,相位控制模块320,第一PWM模块330,第二PWM模块340以及第三PWM模块350。所述故障控制模块310,相位控制模块320,第一PWM模块330,第二PWM模块340以及第三PWM模块350通过总线通信。例如,所述总线可以是电源管理总线(英文:powermanagementbus,简称:PMBus)。当然,图3所示的控制器300可以包括更多的PWM模块,从而实现图2所示的方法中,N为大于3的场景。可选的,所述控制电路300还包括电流检测模块360。例如,控制电路300中的上述模块可以由专用集成电路(英文:application-specificintegratedcircuit,简称:ASIC)实现。Fig. 3 is a schematic structural diagram of a control circuit provided by the embodiment. The control circuit 300 in FIG. 3 can be used to execute the method described in FIG. 2 . Specifically, the control circuit 300 can be used to implement the control circuit in the method shown in FIG. 2 . The control circuit 300 can be used to implement the control circuit 111 shown in FIG. 1 . As shown in FIG. 3 , the control circuit 300 includes a fault control module 310 , a phase control module 320 , a first PWM module 330 , a second PWM module 340 and a third PWM module 350 . The fault control module 310, the phase control module 320, the first PWM module 330, the second PWM module 340 and the third PWM module 350 communicate through the bus. For example, the bus may be a power management bus (English: powermanagementbus, PMBus for short). Of course, the controller 300 shown in FIG. 3 may include more PWM modules, so as to realize the scenario where N is greater than 3 in the method shown in FIG. 2 . Optionally, the control circuit 300 further includes a current detection module 360 . For example, the above-mentioned modules in the control circuit 300 may be implemented by an application-specific integrated circuit (English: application-specific integrated circuit, ASIC for short).

举例来说,控制电路300中的所述第一PWM模块330可以与图1中所示的第一开关115耦合,从而控制所述第一开关115。所述第二PWM模块340可以与图1中所示的第二开关116耦合,从而控制所述第二开关116。所述第三PWM模块350可以与图1中所示的第三开关117耦合,从而控制所述第三开关117。For example, the first PWM module 330 in the control circuit 300 can be coupled with the first switch 115 shown in FIG. 1 , so as to control the first switch 115 . The second PWM module 340 can be coupled with the second switch 116 shown in FIG. 1 to control the second switch 116 . The third PWM module 350 can be coupled with the third switch 117 shown in FIG. 1 to control the third switch 117 .

下面以第一PWM模块330向所述第一开关115周期性地发送控制信号,从而控制所述第一开关115周期性地输出电脉冲为例,对所述第一开关115,第二开关116以及第三开关117输出电脉冲的原理进行说明。In the following, the first PWM module 330 periodically sends a control signal to the first switch 115, thereby controlling the first switch 115 to periodically output electric pulses as an example. For the first switch 115, the second switch 116 And the principle of the third switch 117 outputting electric pulses will be described.

举例来说,所述第一开关115可以采用一个P沟道金属氧化物半导体(英文:positivechannelmetaloxidesemiconductor,简称:PMOS)和一个N沟道金属氧化物半导体(英文:negativechannelmetaloxidesemiconductor,简称:NMOS)串联组成的开关管实现。所述PMOS的漏极与从所述电压转换器110外部输入所述电压转换器110的输入电压(以下简称Vin)耦合,所述PMOS的源极与所述NMOS的漏极耦合,所述NMOS的源极与图1中所示的地线耦合。所述第一PWM330通过向所述NMOS和所述PMOS的栅极,分别发送控制信号,控制所述第一开关的状态。例如,当第一PWM330向所述NMOS发送第一低电平信号,向所述PMOS的栅极发送第二低电平信号时,所述第一开关115处于状态1。即所述PMOS导通,所述NMOS不导通。所述第一开关115处于状态1时,第一开关115在A点输出电脉冲。所述电脉冲的电压值与所述Vin的电压值相等。当所述第一PWM330向所述NMOS发送第一高电平信号,向所述PMOS的栅极发送第二高电平信号时,所述第一开关115处于状态2。即所述NMOS导通,所述PMOS不导通。所述第一开关115处于状态2时,第一开关115在A点没有输出电脉冲。所述第一开关115处于状态2时A点的电压值与地线的电压值相等。例如,所述地线的电压值可以等于0V。当所述第一PWM330向所述NMOS发送第一中间电平信号,向所述PMOS的栅极发送第二中间电平信号时,所述第一开关115处于状态3。即所述PMOS不导通,所述NMOS不导通,所述第一相112处于断开的状态。所述第一开关115处于状态3时,所述第一开关115在A点没有输出电脉冲。高电平信号、中间电平信号以及低电平信号是相对的概念。具体地,PWM模块向同一个MOS发送的高电平信号的电平高于中间电平信号的电平。PWM模块向同一个MOS发送的中间电平信号的电平高于低电平信号的电平。本领域技术人员可以理解的是,所述第一高电平信号、所述第二高电平信号、所述第一中间电平信号、所述第二中间电平信号、所述第一低电平信号以及所述第二低电平信号的电压值,可以根据所述NMOS以及所述PMOS的导通电压选取。For example, the first switch 115 may be composed of a P-channel metal oxide semiconductor (English: positive channel metal oxide semiconductor, PMOS for short) and an N-channel metal oxide semiconductor (English: negative channel metal oxide semiconductor, NMOS for short) connected in series. The switching tube is realized. The drain of the PMOS is coupled to the input voltage (hereinafter referred to as Vin) input to the voltage converter 110 from the outside of the voltage converter 110, the source of the PMOS is coupled to the drain of the NMOS, and the NMOS The source of is coupled to ground as shown in Figure 1. The first PWM 330 controls the state of the first switch by sending control signals to the gates of the NMOS and the PMOS respectively. For example, when the first PWM 330 sends a first low-level signal to the NMOS and a second low-level signal to the gate of the PMOS, the first switch 115 is in state 1 . That is, the PMOS is turned on, and the NMOS is not turned on. When the first switch 115 is in state 1, the first switch 115 outputs an electric pulse at point A. The voltage value of the electric pulse is equal to the voltage value of Vin . When the first PWM 330 sends a first high-level signal to the NMOS and a second high-level signal to the gate of the PMOS, the first switch 115 is in state 2 . That is, the NMOS is turned on, and the PMOS is not turned on. When the first switch 115 is in state 2, the first switch 115 does not output an electric pulse at point A. When the first switch 115 is in state 2, the voltage value at point A is equal to the voltage value of the ground wire. For example, the voltage value of the ground wire may be equal to 0V. When the first PWM 330 sends a first mid-level signal to the NMOS and a second mid-level signal to the gate of the PMOS, the first switch 115 is in state 3 . That is, the PMOS is off, the NMOS is off, and the first phase 112 is in a disconnected state. When the first switch 115 is in state 3, the first switch 115 does not output an electric pulse at point A. High-level signals, mid-level signals, and low-level signals are relative concepts. Specifically, the level of the high level signal sent by the PWM module to the same MOS is higher than the level of the middle level signal. The level of the mid-level signal sent by the PWM module to the same MOS is higher than that of the low-level signal. Those skilled in the art can understand that the first high-level signal, the second high-level signal, the first intermediate-level signal, the second intermediate-level signal, the first low-level The voltage values of the level signal and the second low level signal may be selected according to the conduction voltages of the NMOS and the PMOS.

本申请中的开关是指,在控制电路的控制下在所述第一周期或所述第二周期中输出一个电脉冲的电路。例如,当上述第一开关115由两个MOS,即PMOS和NMOS实现时,一个PMOS和一个NMOS构成所述第一相中的一个开关。开关的状态可以是下述三种中的一种。状态1,所述开关的输出端与Vin耦合,所述开关输出的电压值与所述Vin的电压值相等,即所述开关在其输出端输出电脉冲;状态2,所述开关的输出端与地线耦合,所述开关输出的电压值与所述地线的电压值相等,例如所述电压值为0V,所述开关在其输出端没有输出电脉冲;状态3,所述开关的输出端与所述Vin以及所述地线均断开,所述开关在其输出端没有输出电脉冲。The switch in this application refers to a circuit that outputs an electric pulse in the first cycle or the second cycle under the control of the control circuit. For example, when the above-mentioned first switch 115 is realized by two MOSs, that is, PMOS and NMOS, one PMOS and one NMOS constitute a switch in the first phase. The state of the switch can be one of the following three. In state 1, the output terminal of the switch is coupled to Vin , and the voltage value output by the switch is equal to the voltage value of Vin, that is, the switch outputs electric pulses at its output terminal; in state 2, the output of the switch Terminal is coupled with the ground wire, the voltage value output by the switch is equal to the voltage value of the ground wire, for example, the voltage value is 0V, and the switch does not output electric pulses at its output terminal; state 3, the switch’s The output terminal is disconnected from the V in and the ground wire, and the switch does not output electric pulses at its output terminal.

举例来说,所述第一PWM模块330向所述第一开关115发送控制信号,可以是所述第一PWM模块330直接向所述第一开关115发送控制信号。也可以是,在所述第一PWM模块330和所述第一开关115之间包括驱动电路。所述第一PWM模块330将控制信号发送到所述驱动电路。所述驱动将所述控制信号放大,并将放大后的控制信号发送给所述第一开关115。For example, the first PWM module 330 sends a control signal to the first switch 115 , it may be that the first PWM module 330 sends a control signal to the first switch 115 directly. Alternatively, a driving circuit may be included between the first PWM module 330 and the first switch 115 . The first PWM module 330 sends a control signal to the driving circuit. The driving amplifies the control signal, and sends the amplified control signal to the first switch 115 .

举例来说,在所述电压转换器110向负载120供电时,所述第一PWM模块330周期性的发送所述高电平信号和所述低电平信号。相应地,所述第一开关115的状态周期性地在所述状态1和所述状态2之间切换。当所述第一开关115处于状态1时,所述第一开关在所述A点输出电脉冲。For example, when the voltage converter 110 supplies power to the load 120 , the first PWM module 330 periodically sends the high level signal and the low level signal. Correspondingly, the state of the first switch 115 is periodically switched between the state 1 and the state 2 . When the first switch 115 is in state 1, the first switch outputs an electric pulse at the point A.

举例来说,所述第二开关116在C点周期性地输出电脉冲,以及所述第三开关117在E点周期性地输出电脉冲,可以采用与所述第一开关115在A点输出电脉冲相同的实现方式实现。For example, the second switch 116 periodically outputs electric pulses at point C, and the third switch 117 periodically outputs electric pulses at point E, which may be the same as the first switch 115 output at point A. The same implementation of electrical pulses is achieved.

举例来说,所述第一PWM模块330,所述第二PWM模块340以及所述第三PWM模块350可以由信号发生器实现。For example, the first PWM module 330 , the second PWM module 340 and the third PWM module 350 can be implemented by a signal generator.

举例来说,所述第一相112中的第一开关115,所述第二相113中的第二开关116以及所述第三相114中的第三开关117,在一个周期中输出电脉冲的起始时间不同。所述三个开关输出的所述三个电脉冲的起始时间在一个周期内是均匀分布的。For example, the first switch 115 in the first phase 112, the second switch 116 in the second phase 113 and the third switch 117 in the third phase 114 output electric pulses in one cycle start times are different. The starting times of the three electrical pulses output by the three switches are evenly distributed within one cycle.

举例来说,图4示出了S201所述的第一周期中,第一开关115在A点输出的电脉冲,第二开关116在C点输出的电脉冲,以及第三开关117在E点输出电脉冲的波形的一种可能的实现方式。所述第一周期由第一子周期,第二子周期以及第三子周期组成。所述第一周期的时长为T1。假设所述第一周期的起始时间为0。所述第一周期的结束时间为T1。所述第一子周期的的起始时间为0,结束时间为T1/3。所述第二子周期的起始时间为T1/3,结束时间是2T1/3。所述第三子周期的起始时间为2T1/3,结束时间是T1。所述第一开关115,第二开关116以及第三开关117在所述第一周期中输出的电脉冲的时长均为T3。所述第一开关115,第二开关116以及第三开关117中的每个开关在所述第一周期中不输出电脉冲的时长为T1-T3。在所述第一周期中,当开关输出电脉冲时,所述开关处于所述状态1。在所述第一周期中,当开关不输出电脉冲时,所述开关处于所述状态2,输出的电压的幅度可以是0V。本领域技术人员可以理解的是,开关由所述状态1切换到所述状态2时,所述开关输出所述电脉冲的上升沿,所述开关由所述状态2切换到所述状态1时,所述开关输出所述电脉冲的下降沿。所述上升沿具有的时长远小于所述T3,所述下降沿具有的时长远小于所述T3For example, FIG. 4 shows that in the first period described in S201, the electric pulse output by the first switch 115 at point A, the electric pulse output by the second switch 116 at point C, and the electric pulse output by the third switch 117 at point E A possible implementation of the waveform of the output electric pulse. The first period is composed of a first sub-period, a second sub-period and a third sub-period. The duration of the first cycle is T 1 . Assume that the start time of the first cycle is 0. The end time of the first period is T 1 . The start time of the first sub-period is 0, and the end time is T 1 /3. The start time of the second sub-period is T 1 /3, and the end time is 2T 1 /3. The start time of the third sub-period is 2T 1 /3, and the end time is T 1 . The durations of the electrical pulses output by the first switch 115 , the second switch 116 and the third switch 117 in the first cycle are all T 3 . Each of the first switch 115 , the second switch 116 and the third switch 117 does not output an electric pulse for a period of time T 1 -T 3 in the first period. In the first period, when the switch outputs an electric pulse, the switch is in the state 1 . In the first period, when the switch does not output an electric pulse, the switch is in the state 2, and the amplitude of the output voltage may be 0V. Those skilled in the art can understand that when the switch is switched from the state 1 to the state 2, the switch outputs the rising edge of the electric pulse, and when the switch is switched from the state 2 to the state 1 , the switch outputs the falling edge of the electric pulse. The duration of the rising edge is much shorter than T 3 , and the duration of the falling edge is much shorter than T 3 .

举例来说,所述电压转换器110中的每一相为所述负载120供电的实际电压,是该相中包括的开关输出的电压值在时间上的平均值。例如,在所述第一相112中,在第一周期内,所述第一开关112在A点输出的电压值等于所述Vin的电压值的电脉冲的时长是T3,输出电压值为0V的时长是T1-T3。A点的电压经过图1所示的L1和C1构成的低通滤波器,加载在负载120上的电压值为为(Vin*T3)/T1。同理,在所述第二相113和所述第三相114中,加载在负载120上的电压值也是(Vin*T3)/T1For example, the actual voltage that each phase of the voltage converter 110 supplies to the load 120 is the time average of the voltage values of the switch outputs included in the phase. For example, in the first phase 112, in the first period, the duration of the electric pulse whose voltage value is equal to the voltage value of V in output by the first switch 112 at point A is T 3 , and the output voltage value is The time period for 0V is T 1 -T 3 . The voltage at point A passes through the low-pass filter formed by L1 and C1 shown in FIG. 1 , and the value of the voltage applied to the load 120 is (V in *T 3 )/T 1 . Similarly, in the second phase 113 and the third phase 114, the voltage value applied to the load 120 is also (Vin*T 3 )/T 1 .

举例来说,第一开关115,第二开关116以及第三开关117在图4所示的第一周期中,输出电脉冲的起始时间不同。上述过程可以由图3所示的相位控制模块320向所述第一PWM模块330,所述第二PWM模块340以及所述第三PWM模块350分别发送不同的时钟信号实现。所述相位控制模块320向上述PWM模块发送的时钟信号的时钟频率相同,所述相位控制模块320向上述PWM模块发送的时钟信号的相位不同。例如,所述相位控制模块320向上述PWM模块发送的时钟信号上沿对应的时间不同。所述第一PWM模块330,第二PWM模块340以及第三PWM模块350分别接收所述相位控制模块320的时钟信号。每个PWM模块在接收的时钟信号的上沿对应的时间输出低电平信号,与所述PWM模块耦合的开关进入所述状态1。时钟信号的上沿对应的时间是PWM模块输出低电平信号的开始时间。每个PWM模块输出所述低电平信号的持续时间为T3,T3的时间长度由所述负载120所需的电压值决定。持续时间T3后,所述PWM模块输出的控制信号由所述低电平信号变为高电平信号,与所述PWM模块耦合的开关进入所述状态2。For example, the first switch 115 , the second switch 116 and the third switch 117 have different start times of outputting electrical pulses in the first cycle shown in FIG. 4 . The above process can be implemented by the phase control module 320 shown in FIG. 3 sending different clock signals to the first PWM module 330 , the second PWM module 340 and the third PWM module 350 respectively. The clock frequency of the clock signal sent by the phase control module 320 to the PWM module is the same, and the phase of the clock signal sent by the phase control module 320 to the PWM module is different. For example, the time corresponding to the rising edge of the clock signal sent by the phase control module 320 to the PWM module is different. The first PWM module 330 , the second PWM module 340 and the third PWM module 350 respectively receive the clock signal of the phase control module 320 . Each PWM module outputs a low-level signal at a time corresponding to the rising edge of the received clock signal, and the switch coupled with the PWM module enters the state 1 . The time corresponding to the rising edge of the clock signal is the start time for the PWM module to output a low level signal. The duration of each PWM module outputting the low-level signal is T 3 , and the time length of T 3 is determined by the voltage value required by the load 120 . After a duration of T3, the control signal output by the PWM module changes from the low-level signal to a high-level signal, and the switch coupled with the PWM module enters the state 2 .

可选的,在一种示例中,S202中所述控制电路确定所述第一相112故障,包括:所述控制电路确定所述第一相112的平均电流的值。所述控制电路获取所述N个相的N个平均电流的值,所述N个相与所述N个平均电流的值一一对应。当所述第一相112的平均电流的值,与所述N个相的所述N个平均电流的值的平均值之差,超过第一值时,所述控制电路确定所述第一相112故障。Optionally, in an example, determining that the first phase 112 is faulty by the control circuit in S202 includes: the control circuit determining an average current value of the first phase 112 . The control circuit acquires N average current values of the N phases, and the N phases are in one-to-one correspondence with the N average current values. When the difference between the average current value of the first phase 112 and the average value of the N average current values of the N phases exceeds a first value, the control circuit determines that the first phase 112 failure.

相应的,图3所示的控制电路300中包括电流检测模块360。所述电压转换器110中的所述第一相112,所述第二相113以及所述第三相114中,分别包括一个电流检测装置(图1中未示出)。所述电流检测装置用于测量所述三个相中每个相的平均电流。所述平均电流是指,在检测周期内,电流的平均值。在一种示例中,所述电流检测装置测量图1中所示的L1的平均电流作为所述第一相112的平均电流,测量图1所示的L2的平均电流作为所述第二相113的平均电流,测量图1所示的L3的平均电流作为所述第三相114的平均电流。在另一种示例中,所述第一开关115、所述第二开关116和所述第三开关117分别由所述PMOS和所述NMOS串联组成的开关管实现。所述电流检测装置360分别测量所述NMOS源极和漏极之间的平均电压。所述NMOS在接收高电平信号的状态下,以及在接收低电平信号的状态下,分别具有特定的电阻值。因此,根据所述NMOS导通的时长,例如所述T1-T3,以及所述NMOS不导通的时长,例如所述T1,所述电流检测装置360可以计算出所述NMOS的平均电阻值。进一步地,所述电流检测装置360根据NMOS所述平均电阻值以及所述NMOS的平均电压,计算出所述NMOS所在的相的平均电流。Correspondingly, the control circuit 300 shown in FIG. 3 includes a current detection module 360 . The first phase 112 , the second phase 113 and the third phase 114 in the voltage converter 110 respectively include a current detection device (not shown in FIG. 1 ). The current detection device is used to measure the average current of each of the three phases. The average current refers to the average value of the current within the detection period. In one example, the current detection device measures the average current of L1 shown in FIG. 1 as the average current of the first phase 112, and measures the average current of L2 shown in FIG. 1 as the second phase 113 The average current of L3 shown in FIG. 1 is measured as the average current of the third phase 114 . In another example, the first switch 115 , the second switch 116 and the third switch 117 are respectively implemented by switching transistors composed of the PMOS and the NMOS connected in series. The current detection device 360 measures the average voltage between the source and the drain of the NMOS respectively. The NMOS has a specific resistance value in the state of receiving a high-level signal and in the state of receiving a low-level signal. Therefore, according to the conduction period of the NMOS, such as the T 1 -T 3 , and the non-conduction period of the NMOS, such as the T 1 , the current detection device 360 can calculate the average value of the NMOS resistance. Further, the current detection device 360 calculates the average current of the phase where the NMOS is located according to the average resistance value of the NMOS and the average voltage of the NMOS.

举例来说,所述电流检测模块360确定电流检测装置测量的每个相的平均电流的值,计算出所述三个相的平均电流的值的平均值。所述电流检测模块360通过比较器,分别比较每个相的平均电流的值与所述三个相的平均电流的值的平均值之差是否大于所述第一值。所述第一值为预先设定的值。所述第一值可以是所述电压转换器正常工作时所允许的平均电流的值的波动的最大值。例如,所述第一值为所述N个平均电流的值的平均值的10%。如果所述第一相112的平均电流的值与所述3个平均电流的值的平均值之差超过所述第一值,所述电流检测模块360确定所述第一相112故障。进一步地,所述电流检测模块360将所述第一相112的标识发送给所述故障控制模块310,以及所述相位控制模块320。For example, the current detection module 360 determines the average current value of each phase measured by the current detection device, and calculates the average value of the average current values of the three phases. The current detection module 360 compares whether the difference between the average current value of each phase and the average value of the average current values of the three phases is greater than the first value through a comparator. The first value is a preset value. The first value may be the maximum value of fluctuations in the value of the average current allowed when the voltage converter works normally. For example, the first value is 10% of the average value of the N average current values. If the difference between the average current value of the first phase 112 and the average value of the three average current values exceeds the first value, the current detection module 360 determines that the first phase 112 is faulty. Further, the current detection module 360 sends the identification of the first phase 112 to the fault control module 310 and the phase control module 320 .

举例来说,在另一种示例中,S202中所述控制电路确定所述第一相112故障,包括:所述控制电路检测到所述电压转换器异常。所述控制电路根据所述检测的结果,断开所述第一相112。所述控制电路111确定,当所述第一相112处于断开的状态,并且N-1个相处于接通的状态时,所述异常消失,所述N-1个相是所述N个相中除所述第一相之外的相。所述控制电路基于所述异常消失的情况,确定所述第一相112故障。For example, in another example, the determining by the control circuit in S202 that the first phase 112 is faulty includes: the control circuit detects that the voltage converter is abnormal. The control circuit disconnects the first phase 112 according to the detection result. The control circuit 111 determines that the abnormality disappears when the first phase 112 is in the off state and N-1 phases are in the on state, and the N-1 phases are the N Phases of the phases other than the first phase. The control circuit determines that the first phase 112 is faulty based on the disappearance of the abnormality.

本申请中,某个相处于断开的状态,是指该相包括的开关处于所述状态3。所述开关的输出端与Vin之间不接通,所述开关的输出端与地线不接通。某个相处于接通的状态,是指对于该相包括的开关的状态,所述状态1和所述状态2交替。所述开关周期性地输出电脉冲。In the present application, a certain phase is in the disconnected state, which means that the switch included in the phase is in the state 3 . The output end of the switch is not connected to Vin , and the output end of the switch is not connected to the ground. The fact that a certain phase is in the on state means that the state 1 and the state 2 alternate for the state of the switch included in the phase. The switch periodically outputs electric pulses.

例如,所述控制电路300中还包括异常检测模块(图3中未示出),用于检测所述负载120两端的电压。当某个时间或某个时长内所述负载120两端的电压大于第二值,所述控制电路确定所述电压转换器异常。例如,所述第一相112故障是所述第一相112中的某个元器件短路。举例来说,所述第一相112中的电感或第一开关发生短路。所述第一相112短路造成所述电压转换器110异常是所述负载120两端的电压大于所述第二值。所述控制电路300确定所述电压转换器110异常之后,根据所述电压转换器110异常的情况,断开所述第一相112,第二相113以及第三相114。之后,所述控制电路300根据配置的指令断开图1中所述第一相112,所述第二相113以及所述第三相114中的某一项,并且控制另外两个相中的对应的开关周期性的输出电脉冲。所述控制电路300检测在所述某一项被断开之后,所述异常是否消失。举例来说,所述异常消失是指,所述负载120两端的电压不超过第三值。所述第三值小于所述第二值。如果所述第一相112处于断开的状态,并且所述第二相113以及所述第三相114处于接通的状态,所述异常消失,则所述异常检测模块确定所述第一相112故障导致了所述电压转换器110异常的情况。进一步地,所述异常检测模块将所述第一相112的标识发送给所述故障控制模块310,以及所述相位控制模块320。For example, the control circuit 300 further includes an abnormality detection module (not shown in FIG. 3 ), configured to detect the voltage at both ends of the load 120 . When the voltage across the load 120 is greater than a second value within a certain time or within a certain duration, the control circuit determines that the voltage converter is abnormal. For example, the fault of the first phase 112 is a short circuit of a component in the first phase 112 . For example, the inductor or the first switch in the first phase 112 is short-circuited. The short circuit of the first phase 112 causes abnormality of the voltage converter 110 that the voltage across the load 120 is greater than the second value. After the control circuit 300 determines that the voltage converter 110 is abnormal, it disconnects the first phase 112 , the second phase 113 and the third phase 114 according to the abnormality of the voltage converter 110 . Afterwards, the control circuit 300 disconnects one of the first phase 112, the second phase 113, and the third phase 114 in FIG. 1 according to the configured instructions, and controls the other two phases The corresponding switch periodically outputs electric pulses. The control circuit 300 detects whether the abnormality disappears after the certain item is disconnected. For example, the disappearance of the abnormality means that the voltage across the load 120 does not exceed a third value. The third value is less than the second value. If the first phase 112 is off, and the second phase 113 and the third phase 114 are on, and the abnormality disappears, then the abnormality detection module determines that the first phase 112 faults lead to abnormal conditions of the voltage converter 110 . Further, the abnormality detection module sends the identification of the first phase 112 to the fault control module 310 and the phase control module 320 .

可选的,在一种示例中,S202之后以及S203之前还包括,所述控制电路300断开所述第一相112。Optionally, in an example, after S202 and before S203, the control circuit 300 further includes disconnecting the first phase 112 .

举例来说,控制电路300断开所述第一相112可以由图3所示的故障控制模块310控制所述第一PWM模块330实现。故障控制模块310将所述第一PWM模块330中输出设置为高阻态(英文:highimpedance),从而使所述第一PWM模块330而不再周期性地输出所述低电平信号或所述高电平信号。进一步地,所述第一PWM模块的输出端还连接中间电平输出模块,所述中间电平输出模块可以由连接在Vin和地线之间的分压电阻实现。所述第一PWM模块向所述第一开关输出中间电平,使所述第一开关的所述PMOS和所述NMOS均不导通。即所述第一开关处于所述的状态3时,所述第一相112被断开。For example, disconnection of the first phase 112 by the control circuit 300 may be implemented by the fault control module 310 shown in FIG. 3 controlling the first PWM module 330 . The fault control module 310 sets the output of the first PWM module 330 to a high-impedance state (English: highimpedance), so that the first PWM module 330 no longer periodically outputs the low-level signal or the high level signal. Further, the output end of the first PWM module is also connected to an intermediate level output module, and the intermediate level output module may be implemented by a voltage dividing resistor connected between V in and ground. The first PWM module outputs an intermediate level to the first switch, so that neither the PMOS nor the NMOS of the first switch is turned on. That is, when the first switch is in the state 3, the first phase 112 is disconnected.

可选的,在另一种示例中,S302之后以及S303之前还包括,所述控制电路断开所述N个相。所述控制电路保存所述第一相112的标识,或者所述控制电路保存N-1个相的标识。所述N-1个相是所述N个相中的相,所述N-1个相不包括所述第一相112。Optionally, in another example, after S302 and before S303, the control circuit further includes disconnecting the N phases. The control circuit saves the identifier of the first phase 112, or the control circuit saves identifiers of N−1 phases. The N−1 phases are phases in the N phases, and the N−1 phases do not include the first phase 112 .

举例来说,所述第一相112的标识,或者所述N-1个相的标识,被保存在控制电路300的寄存器(图3中未示出)中。所述寄存器可以分别位于相位控制模块320和故障控制模块310中,也可以位于控制电路300中。所述相位控制模块320和故障控制模块310通信能够通过总线访问所述寄存器。For example, the identification of the first phase 112, or the identifications of the N−1 phases, is stored in a register (not shown in FIG. 3 ) of the control circuit 300 . The registers can be respectively located in the phase control module 320 and the fault control module 310 , and can also be located in the control circuit 300 . The communication between the phase control module 320 and the fault control module 310 can access the register through the bus.

图5示出了S203中,所述第二周期中,所述第二开关116在C点输出的电脉冲,以及所述第三开关117在E点输出电脉冲的波形的一种可能的实现方式。本实施例中,所述N等于3,N-1等于2。所述第二周期由第四子周期以及第五子周期组成。所述第二周期的时长为T2。假设所述第二周期的起始时间为0。所述第二周期的结束时间为T2。所述第四子周期的起始时间为0,结束时间为T2/2。所述第五子周期的起始时间为T2/2,结束时间为T2。第二开关116以及第三开关117在所述第二周期中,输出所述电脉冲的时长均为T4。第二开关116以及第三开关117中的每个开关在所述第二周期中不输出电脉冲的时长为T2-T4FIG. 5 shows a possible implementation of the electric pulse output by the second switch 116 at point C in the second period in S203 and the waveform of the electric pulse output by the third switch 117 at point E. Way. In this embodiment, the N is equal to 3, and N-1 is equal to 2. The second period is composed of a fourth sub-period and a fifth sub-period. The duration of the second period is T 2 . Assume that the start time of the second period is 0. The end time of the second period is T 2 . The start time of the fourth sub-period is 0, and the end time is T 2 /2. The starting time of the fifth sub-period is T 2 /2, and the ending time is T 2 . In the second period, the second switch 116 and the third switch 117 both output the electrical pulse for a duration of T 4 . Each switch in the second switch 116 and the third switch 117 does not output an electric pulse for a period of time T 2 -T 4 in the second period.

可选的,所述T3等于所述T4,并且所述T1等于所述T2Optionally, the T 3 is equal to the T 4 , and the T 1 is equal to the T 2 .

可选的,如果S202之后以及S203之前还包括所述控制电路断开所述N个相,以及所述控制电路保存所述第一相112的标识,则S203包括所述控制电路根据所述第一相112的标识,确定所述N个开关中的N-1个开关。S203包括所述控制电路所述控制电路控制根据所述第一相112的标识确定的所述N-1个开关在第二周期中输出N-1个电脉冲。Optionally, if after S202 and before S203, it also includes that the control circuit disconnects the N phases, and the control circuit saves the identifier of the first phase 112, then S203 includes that the control circuit An identifier of a phase 112 determines N−1 switches among the N switches. S203 includes the control circuit controlling the N−1 switches determined according to the identification of the first phase 112 to output N−1 electrical pulses in a second cycle.

具体来说,所述电压转换器的N个开关与N个相一一对应。根据所述第一相112的标识确定所述N-1个开关是指,确定所述N个开关中,所述第一开关之外的N-1个开关。Specifically, the N switches of the voltage converter are in one-to-one correspondence with the N phases. Determining the N−1 switches according to the identifier of the first phase 112 refers to determining N−1 switches other than the first switch among the N switches.

可选的,如果S202之后以及S203之前还包括所述控制电路断开所述N个相,以及所述控制电路保存所述N-1个相的标识,则S203包括所述控制电路根据所述N-1个相的标识,确定所述N个开关中的N-1个开关。S203包括所述控制电路所述控制电路控制根据所述N-1个相的标识确定的所述N-1个开关在第二周期中输出N-1个电脉冲。Optionally, if after S202 and before S203, it also includes that the control circuit disconnects the N phases, and the control circuit saves the identifiers of the N-1 phases, then S203 includes that the control circuit according to the Identify N-1 phases, and determine N-1 switches among the N switches. S203 includes the control circuit controlling the N-1 switches determined according to the identifications of the N-1 phases to output N-1 electrical pulses in a second period.

具体来说,所述电压转换器的N个开关与N个相一一对应。根据所述N-1个相的标识确定所述N-1个开关是指,确定所述N-1个相中包括的所述N-1个开关。Specifically, the N switches of the voltage converter are in one-to-one correspondence with the N phases. Determining the N-1 switches according to the identifiers of the N-1 phases refers to determining the N-1 switches included in the N-1 phases.

图6是本申请实施例提供的一种电压转换器的结构示意图。所述电压转换器600包括控制单元601,检测单元602以及N个相603,所述N个相603包括N个开关(图6中未示出),所述N个相603与所述N个开关一一对应,N为大于2的整数。举例来说,所述电压转换器600可以采用图1所示的电压转换器110实现。例如控制单元601以及检测单元602可以采用图1所示的控制电路111实现。当N等于3时,N个相603可以采用图1所示的第一相112,第二相113以及第三相114实现。Fig. 6 is a schematic structural diagram of a voltage converter provided by an embodiment of the present application. The voltage converter 600 includes a control unit 601, a detection unit 602, and N phases 603. The N phases 603 include N switches (not shown in FIG. 6 ), and the N phases 603 and the N The switches are in one-to-one correspondence, and N is an integer greater than 2. For example, the voltage converter 600 may be implemented by using the voltage converter 110 shown in FIG. 1 . For example, the control unit 601 and the detection unit 602 can be realized by using the control circuit 111 shown in FIG. 1 . When N is equal to 3, the N phases 603 can be realized by using the first phase 112 , the second phase 113 and the third phase 114 shown in FIG. 1 .

参见图6,电压转换器600可以用于执行图2所示的方法。电压转换器600中的控制单元601以及检测单元602可以采用图3中的控制电路300实现。Referring to FIG. 6 , a voltage converter 600 may be used to implement the method shown in FIG. 2 . The control unit 601 and the detection unit 602 in the voltage converter 600 can be realized by the control circuit 300 in FIG. 3 .

所述控制单元601,用于控制所述N个开关在第一周期中输出N个电脉冲,所述N个开关与所述N个电脉冲一一对应。所述第一周期具有的时长是T1,所述第一周期由N个连续的子周期组成,所述N个连续的子周期中每个子周期具有的时长是T1/N,所述N个电脉冲的N个起始时间分别是所述N个连续的子周期的N个起始时间。The control unit 601 is configured to control the N switches to output N electric pulses in the first period, and the N switches correspond to the N electric pulses one by one. The duration of the first cycle is T 1 , the first cycle is composed of N consecutive sub-cycles, the duration of each sub-cycle in the N consecutive sub-cycles is T 1 /N, and the N The N starting times of the electrical pulses are respectively the N starting times of the N consecutive sub-periods.

具体来说,所述N个电脉冲与所述N个起始时间一一对应。所述N个电脉冲中每个电脉冲具有一个起始时间。所述N个电脉冲的N个起始时间分别是所述N个连续的子周期的N个起始时间。Specifically, the N electrical pulses are in one-to-one correspondence with the N starting times. Each of the N electrical pulses has a start time. The N starting times of the N electrical pulses are respectively the N starting times of the N consecutive sub-periods.

举例来说,所述控制单元601可以用于执行图2所示的S201。For example, the control unit 601 may be configured to execute S201 shown in FIG. 2 .

所述检测单元602,用于在所述控制单元601控制所述N个开关在所述第一周期中输出所述N个电脉冲后,确定第一相故障。所述第一相是所述N个相603中的一个相,所述第一相中包括第一开关,所述第一开关是所述N个开关中的一个开关。The detection unit 602 is configured to determine a first phase fault after the control unit 601 controls the N switches to output the N electrical pulses in the first period. The first phase is one of the N phases 603, the first phase includes a first switch, and the first switch is one of the N switches.

举例来说,所述检测单元602可以用于执行图2所示的S202。For example, the detecting unit 602 may be used to execute S202 shown in FIG. 2 .

所述控制单元601还用于,在所述检测单元602确定所述第一相故障之后,控制所述N个开关中的N-1个开关在第二周期中输出N-1个电脉冲,所述N-1个开关与所述N-1个电脉冲一一对应。所述N-1个开关不包括所述第一开关,所述第二周期具有的时长是T2,所述第二周期由N-1个连续的子周期组成,所述N-1个连续的子周期中每个子周期具有的时长是T2/(N-1),所述N-1个电脉冲的N-1个起始时间分别是所述N-1个连续的子周期的N-1个起始时间。The control unit 601 is further configured to, after the detection unit 602 determines that the first phase is faulty, control N-1 switches among the N switches to output N-1 electric pulses in the second cycle, The N-1 switches are in one-to-one correspondence with the N-1 electrical pulses. The N-1 switches do not include the first switch, the second cycle has a duration of T 2 , the second cycle consists of N-1 consecutive sub-cycles, and the N-1 consecutive sub-cycles The duration of each sub-period in the sub-period is T 2 /(N-1), and the N-1 start times of the N-1 electric pulses are N of the N-1 consecutive sub-periods respectively. -1 start time.

具体来说,所述N-1个电脉冲与所述N-1个起始时间一一对应。所述N个电脉冲中每个电脉冲具有一个起始时间。所述N-1个电脉冲的N个起始时间分别是所述N-1个连续的子周期的N-1个起始时间。Specifically, the N-1 electrical pulses are in one-to-one correspondence with the N-1 start times. Each of the N electrical pulses has a start time. The N starting times of the N-1 electrical pulses are respectively the N-1 starting times of the N-1 consecutive sub-periods.

举例来说,所述控制单元601还可以用于执行图2所示S203。For example, the control unit 601 may also be configured to execute S203 shown in FIG. 2 .

上述各个单元可以通过纯硬件实现,也可以通过硬件与软件的结合实现。例如,CPU通过执行存储器中存储的计算机程序,从而实现上述各个单元。Each of the above units can be realized by pure hardware, or by a combination of hardware and software. For example, the CPU implements the above-mentioned respective units by executing a computer program stored in the memory.

举例来说,在一种示例中,所述检测单元602具体用于:确定所述第一相的平均电流的值;获取所述N个相的N个平均电流的值,所述N个相与所述N个平均电流的值一一对应;以及当所述第一相的平均电流的值,与所述N个相的所述N个平均电流的值的平均值之差,超过第一值时,确定所述第一相112故障。For example, in an example, the detection unit 602 is specifically configured to: determine the value of the average current of the first phase; obtain the values of N average currents of the N phases, and the N phases One-to-one correspondence with the N average current values; and when the difference between the average current value of the first phase and the average value of the N average current values of the N phases exceeds the first value, it is determined that the first phase 112 is faulty.

举例来说,在另一种示例中,所述检测单元602具体用于:检测到所述电压转换器异常;根据所述检测的结果,断开所述第一相;确定当所述第一相处于断开的状态,并且N-1个相处于接通的状态时,所述异常消失,所述N-1个相是所述N个相中除所述第一相之外的相;以及基于所述异常消失的情况,确定所述第一相故障。For example, in another example, the detection unit 602 is specifically configured to: detect that the voltage converter is abnormal; disconnect the first phase according to the detection result; determine when the first phase The abnormality disappears when the phase is in the off state and N-1 phases are in the on state, and the N-1 phases are phases other than the first phase among the N phases; And based on the fact that the abnormality disappears, it is determined that the first phase is faulty.

可选的,所述控制单元601在所述检测单元确定所述第一相故障后,还用于:断开所述第一相。Optionally, after the detection unit determines that the first phase is faulty, the control unit 601 is further configured to: disconnect the first phase.

可选的,在一种示例中,所述控制单元601在所述检测单元确定所述第一相故障之后,以及控制所述N个开关中的N-1个开关在所述第二周期中输出所述N-1个电脉冲之前,还用于:断开所述N个相603;以及保存所述第一相的标识。所述控制单元控制所述N个开关中的N-1个开关在所述第二周期中输出所述N-1个电脉冲,具体包括:根据所述第一相的标识,确定所述N个开关中的N-1个开关;以及控制根据所述第一相的标识确定的所述N-1个开关在所述第二周期中输出所述N-1个电脉冲。Optionally, in an example, the control unit 601 controls N-1 switches among the N switches in the second period after the detection unit determines that the first phase is faulty. Before outputting the N-1 electrical pulses, it is also used to: disconnect the N phases 603; and save the identifier of the first phase. The control unit controls N-1 switches in the N switches to output the N-1 electrical pulses in the second cycle, which specifically includes: determining the N N-1 switches among the switches; and controlling the N-1 switches determined according to the identification of the first phase to output the N-1 electrical pulses in the second period.

可选的,在另一种示例中,所述控制单元601在所述检测单元确定所述第一相故障之后,以及控制所述N个开关中的N-1个开关在所述第二周期中输出所述N-1个电脉冲之前,还用于:断开所述N个相603;以及保存所述N-1个相的标识,所述N-1个相是所述N个相603中的相,所述N-1个相不包括所述第一相。所述控制单元601控制所述N个开关中的N-1个开关在所述第二周期中输出所述N-1个电脉冲,具体包括:根据所述N-1个相的标识,确定所述N个开关中的N-1个开关;以及控制根据所述N-1个相的标识确定的所述N-1个开关在第二周期中输出N-1个电脉冲。Optionally, in another example, after the detection unit determines that the first phase is faulty, the control unit 601 controls N-1 switches among the N switches to switch in the second period Before outputting the N-1 electric pulses, it is also used to: disconnect the N phases 603; and save the identification of the N-1 phases, and the N-1 phases are the N phases For phases in 603, the N-1 phases do not include the first phase. The control unit 601 controls N-1 switches in the N switches to output the N-1 electrical pulses in the second period, specifically including: determining according to the identification of the N-1 phases N-1 switches among the N switches; and controlling the N-1 switches determined according to the identifiers of the N-1 phases to output N-1 electric pulses in the second period.

可选的,所述N个电脉冲中的每个电脉冲的时长是T3,所述N-1个电脉冲中的每个电脉冲的时长是T4,所述T3等于所述T4。所述T1等于所述T2Optionally, the duration of each of the N electrical pulses is T 3 , the duration of each of the N-1 electrical pulses is T 4 , and the T 3 is equal to the T 4 . Said T 1 is equal to said T 2 .

本实施例中提供的电压转换器600中的控制单元601以及检测单元602,可以通过图3所示的控制电路300实现,并应用于图1所示的场景中。电压转换器600可以实现的功能,请参照图2所示的实施例的描述,在这里不再赘述。The control unit 601 and the detection unit 602 in the voltage converter 600 provided in this embodiment can be realized by the control circuit 300 shown in FIG. 3 and applied to the scenario shown in FIG. 1 . For the functions that the voltage converter 600 can implement, please refer to the description of the embodiment shown in FIG. 2 , and details will not be repeated here.

上述实施例提供的电压转换器,仅以上述各功能模块的划分进行举例说明,实际应用中,可以根据需要而将上述功能分配由不同的功能模块完成,即将设备的内部结构划分成不同的功能模块,以完成以上描述的全部或者部分功能。The voltage converter provided in the above-mentioned embodiments is only illustrated by the division of the above-mentioned functional modules. In practical applications, the above-mentioned function allocation can be completed by different functional modules according to needs, that is, the internal structure of the device is divided into different functions. module to complete all or part of the functions described above.

本说明书中的各个实施例均采用递进的方式描述,各个实施例之间相同相似的部分互相参见即可,每个实施例重点说明的都是与其他实施例的不同之处。Each embodiment in this specification is described in a progressive manner, the same and similar parts of each embodiment can be referred to each other, and each embodiment focuses on the differences from other embodiments.

用于执行本申请上述故障处理装置功能的控制电路可以是CPU,通用处理器、ASIC,现场可编程门阵列(英文:Field-ProgrammableGateArray,简称:FPGA)或者其他可编程逻辑器件、晶体管逻辑器件,硬件部件或者其任意组合。其可以实现或执行结合本发明公开内容所描述的各种示例性的逻辑方框,模块和电路。所述处理器也可以是实现计算功能的组合,例如包含一个或多个微处理器组合,DSP和微处理器的组合等等。The control circuit used to execute the functions of the above-mentioned fault handling device of this application may be a CPU, a general-purpose processor, an ASIC, a field programmable gate array (English: Field-Programmable Gate Array, referred to as: FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. It can implement or execute the various illustrative logical blocks, modules and circuits described in connection with the present disclosure. The processor may also be a combination of computing functions, for example, a combination of one or more microprocessors, a combination of DSP and a microprocessor, and so on.

结合本申请公开内容所描述的方法或者算法的步骤可以硬件的方式来实现,也可以是由处理器执行软件指令的方式来实现。软件指令可以由相应的软件模块组成,软件模块可以被存放于随机存取存储器(英文:randomaccessmemory,简称:RAM)、闪存、只读存储器(英文:readonlymemory,简称:ROM)、可擦除可编程只读存储器(英文:erasableprogrammablereadonlymemory,简称:EPROM)、电可擦可编程只读存储器(英文:electricallyerasableprogrammableread-onlymemory,简称:EEPROM)、寄存器、硬盘、移动硬盘、CD-ROM或者本领域熟知的任何其它形式的存储介质中。一种示例性的存储介质耦合至处理器,从而使处理器能够从该存储介质读取信息,且可向该存储介质写入信息。当然,存储介质也可以是处理器的组成部分。处理器和存储介质可以位于ASIC中。The steps of the methods or algorithms described in connection with the disclosure of this application can be implemented in the form of hardware, or can be implemented in the form of a processor executing software instructions. The software instructions can be composed of corresponding software modules, and the software modules can be stored in random access memory (English: random access memory, referred to as: RAM), flash memory, read-only memory (English: readonly memory, referred to as: ROM), erasable and programmable Read-only memory (English: erasable programmable read-only memory, referred to as: EPROM), electrically erasable programmable read-only memory (English: electrically erasable programmable read-only memory, referred to as: EEPROM), registers, hard disk, mobile hard disk, CD-ROM or any other known in the art form of storage media. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be a component of the processor. The processor and storage medium can be located in the ASIC.

以上所述的具体实施方式,对本申请的目的、技术方案和有益效果进行了进一步详细说明,所应理解的是,以上所述仅为本申请的具体实施方式而已,并不用于限定本申请的保护范围。The specific implementation manners described above have further described the purpose, technical solutions and beneficial effects of the application in detail. It should be understood that the above descriptions are only specific implementation modes of the application and are not intended to limit the scope of the application. protected range.

Claims (14)

1.一种电压转换器的故障处理方法,其特征在于,所述电压转换器包括控制电路以及N个相,所述N个相包括N个开关,所述N个相与所述N个开关一一对应,N为大于2的整数,1. A fault handling method for a voltage converter, characterized in that, the voltage converter includes a control circuit and N phases, the N phases include N switches, the N phases and the N switches One-to-one correspondence, N is an integer greater than 2, 所述方法包括:The methods include: 所述控制电路控制所述N个开关在第一周期中输出N个电脉冲,所述N个开关与所述N个电脉冲一一对应,所述第一周期具有的时长是T1,所述第一周期由N个连续的子周期组成,所述N个连续的子周期中每个子周期具有的时长是T1/N,所述N个电脉冲的N个起始时间分别是所述N个连续的子周期的N个起始时间;The control circuit controls the N switches to output N electric pulses in the first cycle, and the N switches correspond to the N electric pulses one by one, and the duration of the first cycle is T 1 , so The first cycle is composed of N consecutive sub-cycles, the duration of each sub-cycle in the N consecutive sub-cycles is T 1 /N, and the N starting times of the N electric pulses are respectively the N start times of N consecutive sub-periods; 所述控制电路控制所述N个开关在所述第一周期中输出所述N个电脉冲后,所述控制电路确定第一相故障,所述第一相是所述N个相中的一个相,所述第一相中包括第一开关,所述第一开关是所述N个开关中的一个开关;After the control circuit controls the N switches to output the N electrical pulses in the first period, the control circuit determines that the first phase is faulty, and the first phase is one of the N phases phase, the first phase includes a first switch, and the first switch is one of the N switches; 所述控制电路确定所述第一相故障之后,所述控制电路控制所述N个开关中的N-1个开关在第二周期中输出N-1个电脉冲,所述N-1个开关与所述N-1个电脉冲一一对应,所述N-1个开关不包括所述第一开关,所述第二周期具有的时长是T2,所述第二周期由N-1个连续的子周期组成,所述N-1个连续的子周期中每个子周期具有的时长是T2/(N-1),所述N-1个电脉冲的N-1个起始时间分别是所述N-1个连续的子周期的N-1个起始时间。After the control circuit determines that the first phase is faulty, the control circuit controls N-1 switches among the N switches to output N-1 electric pulses in the second period, and the N-1 switches One-to-one correspondence with the N-1 electrical pulses, the N-1 switches do not include the first switch, the second cycle has a duration of T 2 , and the second cycle consists of N-1 Consecutive sub-periods, the duration of each sub-period in the N-1 consecutive sub-periods is T2/(N- 1 ), and the N-1 start times of the N-1 electrical pulses are respectively are the N-1 start times of the N-1 consecutive sub-periods. 2.根据权利要求1所述的方法,其特征在于,所述控制电路确定第一相故障,包括:2. The method according to claim 1, wherein the control circuit determining the first phase fault comprises: 所述控制电路确定所述第一相的平均电流的值;the control circuit determines a value of the average current of the first phase; 所述控制电路确定所述N个相的N个平均电流的值,所述N个相与所述N个平均电流一一对应;The control circuit determines the values of N average currents of the N phases, and the N phases correspond to the N average currents one by one; 当所述第一相的平均电流的值,与所述N个相的所述N个平均电流的值的平均值之差,超过第一值时,所述控制电路确定所述第一相故障。The control circuit determines that the first phase is faulty when the difference between the value of the average current of the first phase and the average value of the N average current values of the N phases exceeds a first value . 3.根据权利要求1所述的方法,其特征在于,所述控制电路确定第一相故障,包括:3. The method according to claim 1, wherein the control circuit determining the first phase fault comprises: 所述控制电路检测到所述电压转换器异常;The control circuit detects that the voltage converter is abnormal; 所述控制电路根据所述检测的结果,断开所述第一相;The control circuit disconnects the first phase according to the detection result; 所述控制电路确定,当所述第一相处于断开的状态,并且N-1个相处于接通的状态时,所述异常消失,所述N-1个相是所述N个相中除所述第一相之外的相;The control circuit determines that the abnormality disappears when the first phase is in the off state and N-1 phases are in the on state, the N-1 phases being the N phases a phase other than said first phase; 所述控制电路基于所述异常消失的情况,确定所述第一相故障。The control circuit determines that the first phase is faulty based on the disappearance of the abnormality. 4.根据权利要求1至3任一所述的方法,其特征在于,所述控制电路确定所述第一相故障后,所述方法还包括:4. The method according to any one of claims 1 to 3, wherein after the control circuit determines that the first phase is faulty, the method further comprises: 所述控制电路断开所述第一相。The control circuit disconnects the first phase. 5.根据权利要求1至3任一所述的方法,其特征在于,所述控制电路确定所述第一相故障之后,以及所述控制电路控制所述N个开关中的N-1个开关在所述第二周期中输出所述N-1个电脉冲之前,所述方法还包括:5. The method according to any one of claims 1 to 3, wherein after the control circuit determines that the first phase is faulty, and the control circuit controls N-1 switches in the N switches Before outputting the N-1 electrical pulses in the second cycle, the method further includes: 所述控制电路断开所述N个相;以及the control circuit disconnects the N phases; and 所述控制电路保存所述第一相的标识;The control circuit saves the identity of the first phase; 所述控制电路控制所述N个开关中的N-1个开关在所述第二周期中输出所述N-1个电脉冲,具体包括:The control circuit controls N-1 switches among the N switches to output the N-1 electrical pulses in the second cycle, specifically including: 所述控制电路根据所述第一相的标识,确定所述N个开关中的N-1个开关;以及The control circuit determines N-1 switches among the N switches according to the identifier of the first phase; and 所述控制电路控制根据所述第一相的标识确定的所述N-1个开关在所述第二周期中输出所述N-1个电脉冲。The control circuit controls the N-1 switches determined according to the identifier of the first phase to output the N-1 electrical pulses in the second period. 6.根据权利要求1至3任一所述的方法,其特征在于,所述控制电路确定所述第一相故障之后,以及所述控制电路控制所述N个开关中的N-1个开关在所述第二周期中输出所述N-1个电脉冲之前,所述方法还包括:6. The method according to any one of claims 1 to 3, wherein after the control circuit determines that the first phase is faulty, and the control circuit controls N-1 switches in the N switches Before outputting the N-1 electrical pulses in the second cycle, the method further includes: 所述控制电路断开所述N个相;以及the control circuit disconnects the N phases; and 所述控制电路保存N-1个相的标识,所述N-1个相是所述N个相中的相,所述N-1个相不包括所述第一相;The control circuit saves identifiers of N-1 phases, the N-1 phases are phases of the N phases, and the N-1 phases do not include the first phase; 所述控制电路控制所述N个开关中的N-1个开关在所述第二周期中输出所述N-1个电脉冲,具体包括:The control circuit controls N-1 switches among the N switches to output the N-1 electrical pulses in the second cycle, specifically including: 所述控制电路根据所述N-1个相的标识,确定所述N个开关中的N-1个开关;以及The control circuit determines N-1 switches among the N switches according to the identifiers of the N-1 phases; and 所述控制电路控制根据所述N-1个相的标识确定的所述N-1个开关在第二周期中输出N-1个电脉冲。The control circuit controls the N-1 switches determined according to the identifiers of the N-1 phases to output N-1 electric pulses in the second cycle. 7.根据权利要求1至6任一所述的方法,其特征在于,所述N个电脉冲中的每个电脉冲的时长是T3,所述N-1个电脉冲中的每个电脉冲的时长是T4,所述T3等于所述T4,所述T1等于所述T27. The method according to any one of claims 1 to 6, characterized in that, the duration of each electrical pulse in the N electrical pulses is T 3 , and each electrical pulse in the N-1 electrical pulses The duration of the pulse is T 4 , the T 3 is equal to the T 4 , and the T 1 is equal to the T 2 . 8.一种电压转换器,其特征在于,所述电压转换器包括控制单元,检测单元以及N个相,所述N个相包括N个开关,所述N个相与所述N个开关一一对应,N为大于2的整数,其中,8. A voltage converter, characterized in that, the voltage converter comprises a control unit, a detection unit and N phases, the N phases comprise N switches, the N phases are identical to the N switches One-to-one correspondence, N is an integer greater than 2, where, 所述控制单元,用于控制所述N个开关在第一周期中输出N个电脉冲,所述N个开关与所述N个电脉冲一一对应,所述第一周期具有的时长是T1,所述第一周期由N个连续的子周期组成,所述N个连续的子周期中每个子周期具有的时长是T1/N,所述N个电脉冲的N个起始时间分别是所述N个连续的子周期的N个起始时间;The control unit is configured to control the N switches to output N electric pulses in a first cycle, the N switches correspond to the N electric pulses one by one, and the duration of the first cycle is T 1 , the first cycle is composed of N consecutive sub-cycles, the duration of each sub-cycle in the N consecutive sub-cycles is T 1 /N, and the N starting times of the N electric pulses are respectively are the N starting times of the N consecutive sub-periods; 所述检测单元,用于在所述控制单元控制所述N个开关在所述第一周期中输出所述N个电脉冲后,确定第一相故障,所述第一相是所述N个相中的一个相,所述第一相中包括第一开关,所述第一开关是所述N个开关中的一个开关;The detection unit is configured to determine that the first phase is faulty after the control unit controls the N switches to output the N electrical pulses in the first cycle, and the first phase is the N one of the phases, the first phase including a first switch, the first switch being one of the N switches; 所述控制单元还用于,在所述检测单元确定所述第一相故障之后,控制所述N个开关中的N-1个开关在第二周期中输出N-1个电脉冲,所述N-1个开关与所述N-1个电脉冲一一对应,所述N-1个开关不包括所述第一开关,所述第二周期具有的时长是T2,所述第二周期由N-1个连续的子周期组成,所述N-1个连续的子周期中每个子周期具有的时长是T2/(N-1),所述N-1个电脉冲的N-1个起始时间分别是所述N-1个连续的子周期的N-1个起始时间。The control unit is further configured to control N-1 switches among the N switches to output N-1 electrical pulses in a second cycle after the detection unit determines that the first phase is faulty, the The N-1 switches correspond to the N-1 electrical pulses one by one, the N-1 switches do not include the first switch, the duration of the second cycle is T 2 , and the second cycle It consists of N-1 consecutive sub-cycles, the duration of each sub-cycle in the N-1 consecutive sub-cycles is T 2 /(N-1), and the N-1 of the N-1 electric pulses The start times are respectively the N-1 start times of the N-1 consecutive sub-periods. 9.根据权利要求8所述的电压转换器,其特征在于,所述检测单元具体用于:9. The voltage converter according to claim 8, wherein the detection unit is specifically used for: 确定所述第一相的平均电流的值;determining the value of the average current of the first phase; 确定所述N个相的N个平均电流的值,所述N个相与所述N个平均电流一一对应;determining the values of N average currents of the N phases, the N phases corresponding to the N average currents one by one; 当所述第一相的平均电流的值,与所述N个相的所述N个平均电流的值的平均值之差,超过第一值时,确定所述第一相故障。When the difference between the average current value of the first phase and the average value of the N average current values of the N phases exceeds a first value, it is determined that the first phase is faulty. 10.根据权利要求8所述的电压转换器,其特征在于,所述检测单元具体用于:10. The voltage converter according to claim 8, wherein the detection unit is specifically used for: 检测到所述电压转换器异常;An abnormality of the voltage converter is detected; 根据所述检测的结果,断开所述第一相;disconnecting the first phase according to a result of the detection; 确定当所述第一相处于断开的状态,并且N-1个相处于接通的状态时,所述异常消失,所述N-1个相是所述N个相中除所述第一相之外的相;以及It is determined that the abnormality disappears when the first phase is in the off state and N-1 phases are in the on state, and the N-1 phases are the N phases except the first phase other than phase; and 基于所述异常消失的情况,确定所述第一相故障。Based on the disappearance of the abnormality, it is determined that the first phase is faulty. 11.根据权利要求8至10任一所述的电压转换器,其特征在于,所述控制单元在所述检测单元确定所述第一相故障后,还用于:11. The voltage converter according to any one of claims 8 to 10, wherein the control unit is further configured to: after the detection unit determines that the first phase is faulty 断开所述第一相。disconnect the first phase. 12.根据权利要求8至10任一所述的电压转换器,其特征在于,所述控制单元在所述检测单元确定所述第一相故障之后,以及控制所述N个开关中的N-1个开关在所述第二周期中输出所述N-1个电脉冲之前,还用于:12. The voltage converter according to any one of claims 8 to 10, wherein the control unit controls N- Before outputting the N-1 electric pulses in the second cycle, one switch is also used for: 断开所述N个相;以及disconnecting the N phases; and 保存所述第一相的标识;saving the identity of the first phase; 所述控制单元控制所述N个开关中的N-1个开关在所述第二周期中输出所述N-1个电脉冲,具体包括:The control unit controls N-1 switches among the N switches to output the N-1 electrical pulses in the second cycle, specifically including: 根据所述第一相的标识,确定所述N个开关中的N-1个开关;以及determining N-1 switches among the N switches according to the identification of the first phase; and 控制根据所述第一相的标识确定的所述N-1个开关在所述第二周期中输出所述N-1个电脉冲。controlling the N-1 switches determined according to the identifier of the first phase to output the N-1 electrical pulses in the second cycle. 13.根据权利要求8至10任一所述的电压转换器,其特征在于,所述控制单元在所述检测单元确定所述第一相故障之后,以及控制所述N个开关中的N-1个开关在所述第二周期中输出所述N-1个电脉冲之前,还用于:13. The voltage converter according to any one of claims 8 to 10, wherein the control unit controls N- Before outputting the N-1 electric pulses in the second period, one switch is also used for: 断开所述N个相;以及disconnecting the N phases; and 保存N-1个相的标识,所述N-1个相是所述N个相中的相,所述N-1个相不包括所述第一相;storing identifiers of N-1 phases, where the N-1 phases are phases in the N phases, and the N-1 phases do not include the first phase; 所述控制单元控制所述N个开关中的N-1个开关在所述第二周期中输出所述N-1个电脉冲,具体包括:The control unit controls N-1 switches among the N switches to output the N-1 electrical pulses in the second cycle, specifically including: 根据所述N-1个相的标识,确定所述N个开关中的N-1个开关;以及Determine N-1 switches among the N switches according to the identifiers of the N-1 phases; and 控制根据所述N-1个相的标识确定的所述N-1个开关在第二周期中输出N-1个电脉冲。The N-1 switches determined according to the N-1 phase identifiers are controlled to output N-1 electric pulses in the second cycle. 14.根据权利要求8至13任一所述的电压转换器,其特征在于,所述N个电脉冲中的每个电脉冲的时长是T3,所述N-1个电脉冲中的每个电脉冲的时长是T4,所述T3等于所述T4,所述T1等于所述T214. The voltage converter according to any one of claims 8 to 13, characterized in that, the duration of each electrical pulse in the N electrical pulses is T 3 , and each of the N-1 electrical pulses The duration of an electrical pulse is T 4 , the T 3 is equal to the T 4 , and the T 1 is equal to the T 2 .
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