CN112292807A - 多电平功率转换器电路 - Google Patents
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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
- H02M7/53—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 using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—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 using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse 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
- H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
- H02M1/0077—Plural converter units whose outputs are connected in series
-
- 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
- H02M7/4835—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
- H02M7/483—Converters with outputs that each can have more than two voltages levels
- H02M7/49—Combination of the output voltage waveforms of a plurality of converters
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
- Ac-Ac Conversion (AREA)
Abstract
Description
技术领域
本发明涉及电力电子和非线性控制领域,并且特别地,提供级联桥类型的多电平功率电路。
背景技术
随着电力电子技术的发展,功率转换器的应用变得越来越广泛。由于其低谐波张力含量和输出电流以及开关的低反向张力,多电平转换器除了产生清洁能源外,还广泛用于速度调节以及中高张力的应用。
多电平逆变器(MLI)是在工业应用中选择的主要功率转换装置。这些应用主要包括用于所有电压和功率范围的电机单元。多电平逆变器还应用于连接至网络的系统、不间断电源系统(UPS)、电动车辆和FACTS装置等中。
在现有技术中,存在用于多电平逆变器的不同拓扑的先例。例如,文献CN2768303描述了一个实用新型,其提供了如下多级级联逆变器:所述多级级联逆变器的目的在于减少所使用的部件的数量、在发生高张力和大功率事件时简化多级级联逆变器的结构和控制并产生与常规级联逆变器相同的电平。该实用新型的多电平级联逆变器包括级联以形成多电平逆变器的基本模块。
另一方面,文献CN105450063提供了一种级联的半桥类型的多电平逆变器及其控制方法,其目的在于克服控制策略和现有的多电平级联拓扑的缺陷。该控制策略采用周期控制模式并且对输出电平进行叠加以产生多电平输出。
然而,通常,功率转换器电路具有复杂的配置和大量的部件。因此,需要一种新的配置来优化所述拓扑,从而以最少的部件数量实现预期的电平数。
因此,对于功率转换器电路,需要可以实现所需的电平数、具有简化的配置并且使所使用的部件的数量减少的新的结构。
发明内容
本发明提供了一种功率转换器的新配置,所述功率转换器包括具有图10所示的电路配置的功能块:
-其中,V1、V2、V3、V4、V5是DC电压源;
-其中,D1y D2是两个半导体二极管。
在另一优选实施方式中,该电路的特征在于:开关S3对应于双向开关。
在另一优选实施方式中,该电路的特征在于:该电路包括串联连接的多个功能块,所述功能块中的每个功能块具有图10所示的电路配置。在更优选的实施方式中,该电路的特征在于:该电路包括串联连接的两个功能块并且所述功能块的输出彼此不对称。
附图说明
图1示出了功能块的所有开关的状态相对于作为本发明的目的的功率转换器电路的电压输出电平的通用真值表。
图2示出了作为本发明的目的的功率转换器电路的所述功能块的输出电压的图。
图3示出了作为本发明目的的功率转换器电路的所述功能块的级联布置。
图4示出了作为本发明的目的的功率转换器电路的实施方式的示例。
图5示出了实施方式的所述示例中的第一功能块的输出电压的图。
图6示出了实施方式的所述示例中的第二功能块的输出电压的图。
图7示出了实施方式的所述示例中的电路的输出电压的图。
图8示出了实施方式的所述示例中的电路的输出电流的图。
图9示出了功率转换器电路的所述功能块中的网络的分布。
图10示出了作为本发明的目的的功率转换器的功能块的电路配置。
具体实施方式
本质上,本发明提供了多电平功率转换器的新配置,所述多电平功率转换器包括:五个DC电压源(V1、V2、V3、V4、V5)、八个单向半导体开关(S1、S2、T1、T2、)、双向半导体开关(S3)和两个半导体二极管(D1和D2)。
本发明提供了功率转换器的新配置,所述功率转换器包括具有如图10所示的电路配置的功能块:
-其中,V1、V2、V3、V4、V5是DC电压源;
-其中,D1和D2是两个半导体二极管。
开关S3是双向开关,其允许电流在两个方向上通过。
为了更好地理解,下面在不限制本发明的范围的情况下对所述功能块进行描述。将所述功能块分成7个网络,这不限制本发明的范围。将沿顺时针方向对每个网络的部件的进行描述,这不限制本发明的范围:
网络I:包括开关S1连接至另一双向开关S3,然后双向开关S3转而连接至电压源V1,电压源V1随后连接至所述开关S1。
网络IV:包括电压源V1连接至电压源V2,电压源V2转而连接至开关T1,然后所述开关T1连接至电压源V4,电压源V4连接至另一电压源V3,然后另一电压源V3连接至另一附加电压源V5,然后所述电压源V5与开关T2连接,开关T2转而连接至所述电压源V1。
网络VII(外部):包括开关S1连接至开关所述开关连接至开关然后,所述开关与二极管D2连接,二极管D2转而连接至开关然后开关连接至开关S2,开关S2转而连接至二极管D1,所述二极管D1连接至开关开关最终连接至开关S1。
电源的电压值和电路的部件的性质均不限制本发明的范围,并且将取决于例如功率转换器预期用于的应用。
另一方面,功能块的输出电压不限制本发明的范围。在优选实施方式中,功能块的输出电压在0[V]与1200[V]之间的范围内。
另外,功能块的输出电流不限制本发明的范围。在优选实施方式中,功能块的输出电流在0[A]与8[A]之间的范围内。然而,可以在不限制本发明的范围的情况下使用较高的输出电流。
因此,功能块的输出功率也不限制本发明的范围。在优选的实施方式中,功能块的输出功率在0[kW]与10[kW]之间的范围内。
在本发明的上下文中,在不限制所要求保护的范围的情况下,二极管将被理解为双电极电子阀,其仅允许电流在一个方向通过,从而防止电流在相反的方向上通过。
在本发明的上下文中,在不限制所要求保护的范围的情况下,半导体开关将被理解为设置有电子半导体阀的电子功率装置,并且其目的是打开或关闭电路中的电流通路。
在本发明的上下文中,在不限制所要求保护的范围的情况下,功能块将被理解为以使得组件满足特定功能的方式互连的电气元件和/或电子元件的集合。
在本发明的上下文中,在不限制所要求保护的范围的情况下,非对称输出将被理解为其主块产生不同电平的输出电压的配置。
在本发明的上下文中,串联连接将被理解为装置相继连接的连接配置。
图1示出了通用真值表,其中可以观察到与电路的输出电压的23个电平有关的开关的状态。下面对所述输出电压电平进行详细说明:
图2示出了功能块的特定实施方式中的输出电压随时间的图。在所述图中,观察到电压值在-550V与550V之间的范围内。
图3示出了用于彼此串联连接的多个功能块的通用级联布置,并且该通用级联布置被配置成实现提供多个确定的输出电压的电平。在图1的真值表中详细描述了每个功能块能够产生的电平数。
图4示出了作为本发明的目的的功率转换器电路的实施方式的示例。在实施方式的所述示例中,在不限制所申请保护的范围的情况下,示出了输出相的功率转换器的电路,其产生45个电压电平。图4示出了所提出的结构包括串联连接的两个功能块。
在更优选的实施方式中,在不限制本发明的范围的情况下,图4中示出的所述DC电压源的值为:
V1,1=V2,1=V1,2=V2,2=50V
V3,1=V3,2=150V
V4,1=V5,2=300V
峰值输出电压为1100V,其具有50V的阶跃电压以及50Hz的输出频率,并且峰值电流为7.3A。
图5示出了实施方式的所述示例中的第一功能块的输出电压的图。所述第一功能块的输出电压描述了在-550V与550V之间的范围内的阶跃函数。
图6示出了实施方式的所述示例中的第二功能块的输出电压的图。所述第二功能块的输出电压描述了在-550V与550V之间振荡的具有零阶跃的正弦函数。
在图7中,示出了实施方式的所述示例中的电路的输出电压的图。所述电路的输出电压描述了在-1100V与1100V之间振荡并且是第一功能块的输出电压与第二功能块的输出电压之和的正弦函数。
图8示出了在实施方式的所述示例中的电路的输出电流的图。所述电路的输出电流描述了在-7.3A与7.3A之间振荡的正弦函数。
图9示出了形成功率转换器电路的功能块的网络的枚举。在所述图中,指示了涉及在本详细描述中描述的每个网络的枚举。进行所述枚举是为了提供对本发明的更好的理解,而不是限制所申请保护的范围。
根据先前详细描述的发明,可以获得23个电平的功率转换器电路,其具有简化的配置并且减少了所使用的部件的数量。
应当理解,在不限制本发明的范围的情况下,本领域技术人员可以以任何预见的方式组合本发明的技术特征的不同选项。
接下来,将给出本发明的实施方式的示例。应当理解,所述示例的目的是提供对本发明的更好的理解,绝不是限制本发明的范围。另外,在不限制本发明的范围的情况下,本领域技术人员可以以任何预见的方式将在不同示例中呈现的技术特征彼此结合或与先前描述的其他技术特征结合。
实施方式的示例
示例1:作为本发明的目的的功率转换器的电路的实现
图4示出了产生45个电压电平的单相功率转换器的电路。图4示出了所提出的结构包括串联连接的两个功能块。
为了验证所述电路的配置使得能够获得期望的输出,执行电路仿真。在所述仿真中,假设半导体装置的集合例如开关和二极管是理想的。针对直流电压源选择的值为:
V1,1=V2,1=V1,2=V2,2=50V
V3,1=V3,2=150V
V4,1=V5,2=300V
峰值输出电压为1100V,其具有50V的阶跃电压以及50Hz的输出频率,并且峰值电流为7.3A。
Claims (5)
3.根据权利要求1所述的电路,其特征在于:开关S3对应于双向开关。
4.根据权利要求1所述的电路,其特征在于:所述多电平功率转换器电路包括串联连接的多个功能块,所述功能块中的每个功能块具有权利要求1所述的电路配置。
5.根据权利要求4所述的电路,其特征在于:所述多电平功率转换器电路包括串联连接的两个功能块并且所述功能块的输出彼此不对称。
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PCT/CL2019/050038 WO2020223830A1 (es) | 2019-05-09 | 2019-05-09 | Circuito de convertidor de potencia multinivel |
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US (1) | US12003194B2 (zh) |
EP (1) | EP3926810A4 (zh) |
JP (1) | JP7127223B2 (zh) |
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2019
- 2019-05-09 EP EP19897527.8A patent/EP3926810A4/en not_active Withdrawn
- 2019-05-09 CA CA3137339A patent/CA3137339A1/en active Pending
- 2019-05-09 US US17/610,133 patent/US12003194B2/en active Active
- 2019-05-09 WO PCT/CL2019/050038 patent/WO2020223830A1/es unknown
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MOHAMMAD ALI HOSSEINZADEH等: "New Asymmetric Cascaded Multi-level Converter with Reduced Components", 《2018 IEEE INTERNATIONAL CONFERENCE ON ELECTRICAL SYSTEMS FOR AIRCRAFT, RAILWAY, SHIP PROPULSION AND ROAD VEHICLES & INTERNATIONAL TRANSPORTATION ELECTRIFICATION CONFERENCE (ESARS-ITEC)》 * |
T. SUNITHA等: "A New 23 Level Cascaded Multi-Level Inverter with Optimum Structure", 《2018 4TH INTERNATIONAL CONFERENCE ON ELECTRICAL ENERGY SYSTEMS (ICEES)》 * |
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Publication number | Publication date |
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JP7127223B2 (ja) | 2022-08-29 |
WO2020223830A1 (es) | 2020-11-12 |
CA3137339A1 (en) | 2020-11-12 |
US12003194B2 (en) | 2024-06-04 |
EP3926810A1 (en) | 2021-12-22 |
JP2022531616A (ja) | 2022-07-07 |
US20220224245A1 (en) | 2022-07-14 |
EP3926810A4 (en) | 2022-10-26 |
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