CN103988412A - 多相转换器***和方法 - Google Patents
多相转换器***和方法 Download PDFInfo
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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
- 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
- H02M7/487—Neutral point clamped inverters
-
- 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
- H02M1/0043—Converters switched with a phase shift, i.e. interleaved
-
- 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
- H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
-
- 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
- H02M7/4835—Converters with outputs that each can have more than two voltages levels comprising two or more cells, each including a switchable capacitor, the capacitors having a nominal charge voltage which corresponds to a given fraction of the input voltage, and the capacitors being selectively connected in series to determine the instantaneous output voltage
-
- 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
- H02M7/493—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 the static converters being arranged for operation in parallel
-
- 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
- H02M1/0003—Details of control, feedback or regulation circuits
- H02M1/0025—Arrangements for modifying reference values, feedback values or error values in the control loop of a converter
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
- Dc-Dc Converters (AREA)
- Rectifiers (AREA)
Abstract
一种多相转换器包括多个相路径。各相路径包括至少一个dc链路,其与所有其它相路径dc链路无关,使得各输出相电压从能够与所有其它相电压dc链路电压源不同的对应dc链路电压来生成。确定各输出相电压的总dc链路电压电平。共模注入电压基于所有dc链路电压电平和所有相参考电压来计算。各相路径参考电压然后基于所计算共模注入电压来调整,使得各个所生成输出相电压电平响应于其对应调整的参考电压而调整。
Description
技术领域
一般来说,本公开的主题涉及多相功率转换器技术,非限制性地包括基于H桥的那些转换器技术,以及更具体来说涉及使这类多相转换器通过将适当共模电压注入到所有电压参考信号来提供给定dc链路电压的更好利用的调制方案。
背景技术
多相转换器的现有技术调制方案通过将适当共模电压注入到所有电压参考信号来提供给定dc链路电压的更好利用。当所有相电压均从共同dc链路来生成时,已知方案提供dc链路电压的最佳利用。但是,已知方案的不利之处在于,它们只能使用相当于最小电压电平的电压,这降低输出电压或者要求庞大的dc链路电容器。
虽然这类已知方案是标准拓扑通用的,但是当各相电压从诸如通过基于H桥的多相功率转换器拓扑所实现的单独dc链路电压源来生成时,这些方案不能够提供dc链路电压的最佳利用。
鉴于以上所述,需要提供一种采用H桥拓扑的多相转换器的调制方案,并且其与使用多相转换器的现有技术调制方案可实现的情况相比,提供dc链路电压的更佳使用。
发明内容
按照一个实施例、操作功率转换器的方法包括:
提供包括多个相路径(phase path)的多相转换器,其中各相路径包括至少一个dc链路,其与所有其它相路径dc链路无关并且隔离;
响应于各相的预定参考电压而经由多相转换器来生成多个输出相电压,其中各输出相电压基于对应dc链路电压源,其能够与所有其它相电压dc链路电压源不同;
测量与各输出相电压关联的总dc链路电压电平;
基于各相的正的总dc链路电压和预定参考电压电平来计算第一差电压;
基于各相的负的总dc链路电压和预定参考电压电平来计算第二差电压;
计算所有相的最大第二差电压;
计算所有相的最小第一差电压;
在所有相的最大第二差电压与最小第一差电压之间选择所有相的共模注入电压;以及
将共模注入电压加到各相的预定参考电压,使得各个所生成输出相电压电平响应于其对应调整的参考电压而调整。
按照另一个实施例,共模注入电压计算为所有相的最大第二差电压和最小第一差电压的平均数。
按照另一个实施例,转换器包括基于3电平相脚以及具有正和负半dc链路的dc链路的H桥。计算各相的总dc链路电压通过计算正半dc链路电压和负半dc链路电压的差来实现。
按照另一个实施例,转换器包括各相的多个H桥以及各相的多个对应dc链路。计算各相的总dc链路电压通过计算各相的所有dc链路电压之和来实现。
附图说明
通过以下结合附图的详细描述,本发明的上述及其它特征、方面和优点是显而易见的,附图中相似标号通篇表示相似部件,附图包括:
图1示出按照一个实施例的多相功率转换器;
图2是示出按照一个实施例、操作多相功率转换器的方法的流程图;
图3是示出按照一个实施例、具有各相的单独dc链路电压源并且基于dc链路波纹电压来使用各相的共模注入电压的多相功率转换器的输出电压增益的图表;
虽然上述附图提出备选实施例,但是还预期本发明的其它实施例,如论述中所述。在所有情况下,本公开作为代表而不是限制来提供本发明的所示实施例。许多其它修改和实施例能够由本领域的技术人员来设计,它们落入本发明的原理的范围和精神之内。
具体实施方式
图1示出按照一个实施例的多相功率转换器10。能够看到转换器10采用多个有源H桥逆变器12。各个H桥逆变器12耦合到对应dc链路14。各相输出电压基于其自己的dc链路电压,其与所有其它dc链路电压不同并且无关。按照一个实施例,转换器10 H桥逆变器12还各耦合到具有基本工作频率fo的三相负载/源22的对应相连接。
按照一个实施例,转换器10还采用一个或多个本地控制器24,并且还可采用中央或主要控制器26。(一个或多个)本地控制器24和/或中央控制器26配置有算法软件和/或固件,其编程为基于各相中实际可用的电压来得出各相的最佳共模注入电压。
多相转换器、例如三相转换器的现有技术调制方案通过将适当共模电压注入到所有电压参考信号来提供给定dc链路电压的更好利用,如本文所述。当所有相电压均从共模dc链路来生成(与图1所示的转换器拓扑不同)时,应用于标准转换器拓扑的已知方案提供dc链路电压的这种最佳利用。当应用于诸如图1所示之类的转换器10时,这类调制方案是未达最佳标准的,因为转换器10的各相输出电压从其自己的dc链路(其与所有其它dc链路不同并且无关)来生成。
按照一个实施例,通过单独考虑各相中的实际可用dc链路电压,并且然后基于其自己的dc链路电压(其可与所有其它相dc链路电压不同)得出各相的最佳共模电压,来实现多相转换器10、例如图1所示转换器的调制。本文中参照图2更详细地描述用于操作多相转换器的一种适当方法。本发明的发明人发现,转换器输出功率使用本文所述的原理可能增加至少5%。此外,dc链路电容的减小可产生能够容许较高电压波纹的某些应用。
继续参照图1,一个或多个本地控制器16一般编程有预定参考电压,其控制各逆变器12的调制指数。备选地,预定参考电压能够经由中央控制器18来生成,其中中央控制器18与本地控制器16进行通信,以控制各逆变器12的调制指数。
能够看到转换器10包括多个相路径A、B和C,其中各相路径包括dc链路14,其与所有其它相路径dc链路无关并且隔离,如本文所述。在正常操作期间,各相路径dc链路电压通常看到波纹电压,其从所有其它相路径相移120°,并且以2fo的频率来生成。
按照一个实施例,各逆变器12采用3电平中性点钳位(3L-NPC)H桥20来实现。各输出相电压则由对应H桥逆变器20响应于预定参考电压(其确定各控制器16将如何调制其对应3L-NPC H桥逆变器20)而生成。
现在来看图2,流程图30示出按照一个实施例、使用本文所述的原理来操作具有隔离dc链路的多相功率转换器的方法。按照一个实施例,通过首先测量与各输出相电压关联的总dc链路电压电平,来确定各相A、B、C的预期调制指数,如框32所表示。
第一差电压然后基于各相的预定参考电压电平和正dc链路电压来计算,以及第二差电压也基于各相的预定参考电压电平和负dc链路电压来计算,如框34所表示。
最大第二差电压从各相的所计算的第二差电压来确定,以及最小第一差电压从各相的所计算的第一差电压来确定,如框36所表示。
在如框36所表示、确定最大第二差电压和最小第一差电压之后,共模注入电压计算为各相的最大第二差电压和最小第一差电压的平均数,如框38所表示。
然后将在框38所计算的共模注入电压加到各相的预定参考电压,以生成调整的参考电压,使得各个所生成输出相电压电平响应于其对应调整的参考电压而调整,如框40所表示。
图3是示出按照一个实施例、具有各相的单独dc链路电压源并且基于dc链路波纹电压来使用各相的共模注入电压的多相功率转换器的输出电压增益的图表50。各个dc链路具有从所有其它dc链路波纹电压相移120°的波纹电压。图3所示的图表代表具有15%峰-峰dc链路波纹电压的dc链路。上部虚线52表示各个dc链路的平均正DC电压,而下部虚线54表示各个dc链路的平均负DC电压。分别示出用于使用典型共模注入方案来调制的多相功率转换器以及还用于使用本文所述原理的共模注入方案的归一化相输出电压56、58。归一化输出电压56与58之间的比较表明有利于使用本文所述原理的共模注入方案的大约7.8%的增益。
虽然本文仅说明和描述了本发明的某些特征,但本领域的技术人员将会想到多种修改和变更。因此要理解,所附权利要求书预计涵盖落入本发明的真实精神之内的所有这类修改和变更。
Claims (13)
1. 一种操作多相转换器的方法,所述方法包括:
提供包括多个相路径的多相转换器,其中各相路径包括与所有其它相路径dc链路无关的至少一个dc链路;
响应于各相的预定参考电压而经由所述多相转换器来生成多个输出相电压,其中各输出相电压基于能够与所有其它相电压dc链路电压源不同的至少一个对应dc链路电压源;
确定与各输出相电压关联的总dc链路电压电平;
基于各相的所述预定参考电压电平和正dc链路电压来计算第一差电压;
基于各相的所述预定参考电压电平和负dc链路电压来计算第二差电压;
计算所有相的所述第二差电压的最大数;
计算所有相的所述第一差电压的最小数;
选择位于所述最大第二差电压与所述最小第一差电压之间或者等于其中之一的共模注入电压;以及
将所述共模注入电压加到所述预定参考电压,并且从其中生成各相的调整的参考电压,使得各个所生成输出相电压电平响应于其对应调整的参考电压而调整。
2. 如权利要求1所述的方法,其中,提供多相转换器包括提供基于H桥的多相转换器。
3. 如权利要求1所述的方法,其中,选择共模电压通过计算所述最大第二差电压和所述最小第一差电压的平均数来实现。
4. 如权利要求1所述的方法,其中,确定所述总dc链路电压通过测量至少一个dc链路电压电平来实现。
5. 如权利要求1所述的方法,其中,确定所述总dc链路电压通过基于转换器模型的计算来实现。
6. 一种多相功率转换器,包括:
多个相路径,其中各相路径包括与所有其它相路径dc链路无关的至少一个dc链路;以及
一个或多个控制器,配置成调整各相的参考电压,其中各相路径的所述调整的参考电压基于对应预定参考电压电平、对应正dc链路电压和对应负dc链路电压。
7. 如权利要求6所述的多相功率转换器,其中,至少一个控制器还配置成基于各相的所述预定参考电压电平和所述正dc链路电压来计算第一差电压。
8. 如权利要求7所述的多相功率转换器,其中,所述至少一个控制器还配置成基于各相的所述预定参考电压电平和所述负dc链路电压来计算第二差电压。
9. 如权利要求8所述的多相功率转换器,其中,所述至少一个控制器还配置成计算所有相的所述第二差电压的最大数。
10. 如权利要求9所述的多相功率转换器,其中,所述至少一个控制器还配置成计算所有相的所述第一差电压的最小数。
11. 如权利要求10所述的多相功率转换器,其中,所述至少一个控制器还配置成选择位于所述最大第二差电压与所述最小第一差电压之间或者等于其中之一的共模注入电压。
12. 如权利要求11所述的多相功率转换器,其中,所述至少一个控制器还配置成将所述选择的共模注入电压加到所述预定参考电压,并且从其中生成各相的所述调整的参考电压,使得各个所生成输出相电压电平响应于其对应调整的参考电压而调整。
13. 如权利要求6所述的多相功率转换器,其中,各相路径包括至少一个H桥逆变器。
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Application Number | Priority Date | Filing Date | Title |
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US13/315660 | 2011-12-09 | ||
US13/315,660 US9071164B2 (en) | 2011-12-09 | 2011-12-09 | Multi-phase converter system and method |
PCT/US2012/068328 WO2013086247A2 (en) | 2011-12-09 | 2012-12-07 | Multi-phase converter system and method |
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CN103988412A true CN103988412A (zh) | 2014-08-13 |
CN103988412B CN103988412B (zh) | 2018-06-12 |
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CN201280060638.3A Active CN103988412B (zh) | 2011-12-09 | 2012-12-07 | 多相转换器***和方法 |
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US (1) | US9071164B2 (zh) |
EP (1) | EP2789093B1 (zh) |
JP (1) | JP6134733B2 (zh) |
KR (1) | KR20140099268A (zh) |
CN (1) | CN103988412B (zh) |
AU (1) | AU2012347712A1 (zh) |
BR (1) | BR112014013134A2 (zh) |
CA (1) | CA2857732A1 (zh) |
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WO (1) | WO2013086247A2 (zh) |
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US9036379B2 (en) * | 2011-11-15 | 2015-05-19 | General Electric Company | Power converter based on H-bridges |
US9092313B2 (en) * | 2013-01-25 | 2015-07-28 | Honeywell International Inc. | System and method for three input voting |
EP2849331B1 (en) * | 2013-09-11 | 2020-02-12 | ABB Schweiz AG | Method and apparatus for balancing voltages of multi-level inverter DC link |
DE102013221830A1 (de) * | 2013-10-28 | 2015-04-30 | Robert Bosch Gmbh | Ladeschaltung für eine Energiespeichereinrichtung und Verfahren zum Laden einer Energiespeichereinrichtung |
US9755545B2 (en) | 2014-11-21 | 2017-09-05 | General Electric Company | System and method for unified common mode voltage injection |
EP3043459A1 (de) * | 2015-01-08 | 2016-07-13 | Siemens Aktiengesellschaft | Modularer Multilevelumrichter mit phasenspezifischen Modulatoren |
EP3375084B1 (en) | 2015-11-09 | 2022-07-20 | ABB Schweiz AG | Electrical converter and control method |
EP3393034A1 (en) * | 2017-04-21 | 2018-10-24 | GE Energy Power Conversion Technology Limited | Controlling a back-to-back three-level converter with midpoint voltage ripple compensation |
US10917015B2 (en) | 2017-08-31 | 2021-02-09 | Active-Semi (BVI) Inc. | Multiphase converter system and control method |
CN111934551B (zh) | 2020-07-29 | 2021-10-08 | 矽力杰半导体技术(杭州)有限公司 | 控制模块及应用其的多相功率变换器 |
CN112688542B (zh) | 2021-01-06 | 2022-04-29 | 矽力杰半导体技术(杭州)有限公司 | 控制电路以及应用其的开关变换器 |
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2012
- 2012-12-07 WO PCT/US2012/068328 patent/WO2013086247A2/en unknown
- 2012-12-07 CN CN201280060638.3A patent/CN103988412B/zh active Active
- 2012-12-07 RU RU2014121056A patent/RU2014121056A/ru not_active Application Discontinuation
- 2012-12-07 CA CA2857732A patent/CA2857732A1/en not_active Abandoned
- 2012-12-07 BR BR112014013134A patent/BR112014013134A2/pt not_active IP Right Cessation
- 2012-12-07 JP JP2014546100A patent/JP6134733B2/ja not_active Expired - Fee Related
- 2012-12-07 KR KR1020147015261A patent/KR20140099268A/ko not_active Application Discontinuation
- 2012-12-07 AU AU2012347712A patent/AU2012347712A1/en not_active Abandoned
- 2012-12-07 EP EP12814039.9A patent/EP2789093B1/en active Active
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CN1244745A (zh) * | 1998-05-21 | 2000-02-16 | 罗比康公司 | 在故障模式下具有高输出的驱动器 |
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Also Published As
Publication number | Publication date |
---|---|
CN103988412B (zh) | 2018-06-12 |
RU2014121056A (ru) | 2016-01-27 |
EP2789093B1 (en) | 2020-11-11 |
US20130148397A1 (en) | 2013-06-13 |
EP2789093A2 (en) | 2014-10-15 |
AU2012347712A1 (en) | 2014-06-19 |
KR20140099268A (ko) | 2014-08-11 |
CA2857732A1 (en) | 2013-06-13 |
WO2013086247A8 (en) | 2014-06-26 |
JP2015500624A (ja) | 2015-01-05 |
JP6134733B2 (ja) | 2017-05-24 |
WO2013086247A2 (en) | 2013-06-13 |
BR112014013134A2 (pt) | 2017-06-13 |
US9071164B2 (en) | 2015-06-30 |
WO2013086247A3 (en) | 2013-11-14 |
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