CN104578868A - 一种开绕组电机双端级联式五电平逆变器容错调制方法 - Google Patents

一种开绕组电机双端级联式五电平逆变器容错调制方法 Download PDF

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CN104578868A
CN104578868A CN201510045679.0A CN201510045679A CN104578868A CN 104578868 A CN104578868 A CN 104578868A CN 201510045679 A CN201510045679 A CN 201510045679A CN 104578868 A CN104578868 A CN 104578868A
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inverter
fault
fault tolerance
double
modulation method
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CN104578868B (zh
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杜朋
钟志祥
童为为
邵祥
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China University of Mining and Technology CUMT
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China University of Mining and Technology CUMT
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/483—Converters with outputs that each can have more than two voltages levels
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/32—Means for protecting converters other than automatic disconnection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/32—Means for protecting converters other than automatic disconnection
    • H02M1/325—Means for protecting converters other than automatic disconnection with means for allowing continuous operation despite a fault, i.e. fault tolerant converters

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Ac Motors In General (AREA)

Abstract

本发明涉及一种开绕组电机双端级联式五电平逆变器容错调制方法，该方法将参考电压矢量T分解为两个等效矢量T1和T2，分别由逆变器1和逆变器2单独产生。当逆变器任一相上桥臂和另一逆变器对应下桥臂最多四个开关器件故障时，逆变器1和逆变器2空间矢量图中的A、B、C、D、E、F、O七个电压矢量仍可以正常使用，利用上述矢量合成参考电压矢量，实现系统在最大输出电压降低一半，最大输出电流保持不变情况下的容错运行。发明的积极进步效果在于：1.能实现一侧逆变器任一相上桥臂和另一逆变器对应下桥臂最多四个开关器件故障时的容错运行；2.省去复杂的切换开关。

Description

一种开绕组电机双端级联式五电平逆变器容错调制方法
技术领域
本发明涉及一种逆变器容错调制方法，特别是涉及一种开绕组电机独立母线结构双端级联式五电平逆变器容错调制方法。
背景技术
双端三相开绕组电机具有输出电压等级高，输出电平数较多，以及高容错能力等优点，是一种很有应用前景的拓扑，而容错能力在提升机、铁路牵引、船舶驱动等关键传动场合越来越重要。现有开绕组电机独立母线结构双端级联式五电平逆变器容错调制方法仅能简单切除一侧逆变器，不能实现两台逆变器同时故障时的容错运行，同时开关切换复杂。
发明内容
本发明所要解决的技术问题是提供一种开绕组电机双端级联式五电平逆变器容错调制方法，能实现独立母线结构双端级联式五电平逆变器系统中两台逆变器同时故障时的容错运行，同时省去复杂的切换开关。
本发明是通过下述技术方案来解决上述技术问题的：一种开绕组电机双端级联式五电平逆变器容错调制方法，其特征在于，将参考电压矢量分解为两个等效矢量，分别由逆变器1和逆变器2单独产生，当逆变器任一相上桥臂和另一逆变器对应下桥臂最多四个开关器件触发丢失或断路时，仅使用逆变器1和逆变器2中的小矢量及零矢量合成参考电压矢量，系统在最大输出电压降低一半，最大输出电流保持不变的情况下容错运行。
本发明的积极进步效果在于：1.本发明可以实现一侧逆变器任一相上桥臂和另一逆变器对应下桥臂最多四个开关器件故障时的容错运行；2.本发明省去切换开关。
附图说明
图1为现有开绕组电机独立母线结构双端级联式五电平逆变器的结构示意图。
图2为本发明在双端级联式五电平逆变器故障时两台逆变器所使用矢量示意图。
具体实施方式
下面结合附图和具体实施方式对本发明作进一步详细的说明。
如图2所示，将参考电压矢量T分解为两个等效矢量T1和T2，分别由逆变器1和逆变器2单独产生。以A相故障为例，当逆变器1的A相上桥臂和逆变器2的A相下桥臂最多四个开关器件发生故障时，逆变器1空间矢量图中的A(onn)、B(oon)、C(opo、non)、D(opp、noo)、E(oop、nno)、F(ono)、O(ooo)七个电压矢量仍能正常使用，逆变器2空间矢量图中的A(onn、poo)、B(oon、ppo)、C(opo)、D(opp)、E(oop)、F(ono、pop)、O(ooo)七个电压矢量仍能正常使用，结合空间电压矢量调制算法，利用上述矢量合成参考电压矢量，实现系统在最大输出电压降低一半，最大输出电流保持不变情况下的容错运行。

Claims (1)

1.一种开绕组电机双端级联式五电平逆变器容错调制方法，其特征在于：该方法将参考电压矢量T分解为两个等效矢量T1和T2，分别由逆变器1和逆变器2单独产生，当一侧逆变器任一相上桥臂和另一逆变器对应下桥臂最多四个开关器件故障时，逆变器1和逆变器2空间矢量图中的A、B、C、D、E、F、O七个电压矢量仍能正常使用，利用上述矢量合成参考电压矢量，实现系统在最大输出电压降低一半，最大输出电流保持不变情况下的容错运行。
CN201510045679.0A 2015-01-29 2015-01-29 一种开绕组电机双端级联式五电平逆变器容错调制方法 Expired - Fee Related CN104578868B (zh)

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CN105207508A (zh) * 2015-09-15 2015-12-30 淮海工学院 一种共母线双端级联式五电平逆变器的容错调制方法
CN113992112A (zh) * 2021-11-09 2022-01-28 燕山大学 一种轻型mmc电机驱动系统拓扑及其调制方法

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105207508A (zh) * 2015-09-15 2015-12-30 淮海工学院 一种共母线双端级联式五电平逆变器的容错调制方法
CN105207508B (zh) * 2015-09-15 2017-09-22 淮海工学院 一种共母线双端级联式五电平逆变器的容错调制方法
CN113992112A (zh) * 2021-11-09 2022-01-28 燕山大学 一种轻型mmc电机驱动系统拓扑及其调制方法
CN113992112B (zh) * 2021-11-09 2024-03-26 燕山大学 一种轻型mmc电机驱动系统拓扑及其调制方法

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