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1. WO2022110904 - MULTI-LEVEL INVERTER AND CONTROL METHOD FOR MULTI-LEVEL INVERTER

Publication Number WO/2022/110904
Publication Date 02.06.2022
International Application No. PCT/CN2021/112418
International Filing Date 13.08.2021
IPC
H02M 7/483 2007.1
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
MAPPARATUS 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
7Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
42Conversion of dc power input into ac power output without possibility of reversal
44by static converters
48using discharge tubes with control electrode or semiconductor devices with control electrode
483Converters with outputs that each can have more than two voltage levels
H02M 7/5387 2007.1
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
MAPPARATUS 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
7Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
42Conversion of dc power input into ac power output without possibility of reversal
44by static converters
48using discharge tubes with control electrode or semiconductor devices with control electrode
53using devices of a triode or transistor type requiring continuous application of a control signal
537using semiconductor devices only, e.g. single switched pulse inverters
5387in a bridge configuration
CPC
H02J 9/062
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
9Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
04in which the distribution system is disconnected from the normal source and connected to a standby source
06with automatic change-over ; , e.g. UPS systems
062for AC powered loads
H02M 7/483
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
MAPPARATUS 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
7Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
42Conversion of dc power input into ac power output without possibility of reversal
44by static converters
48using discharge tubes with control electrode or semiconductor devices with control electrode
483Converters with outputs that each can have more than two voltages levels
H02M 7/53871
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
MAPPARATUS 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
7Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
42Conversion of dc power input into ac power output without possibility of reversal
44by static converters
48using discharge tubes with control electrode or semiconductor devices with control electrode
53using devices of a triode or transistor type requiring continuous application of a control signal
537using semiconductor devices only, e.g. single switched pulse inverters
5387in a bridge configuration
53871with automatic control of output voltage or current
Y02E 10/56
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
10Energy generation through renewable energy sources
50Photovoltaic [PV] energy
56Power conversion systems, e.g. maximum power point trackers
Applicants
  • 华为数字能源技术有限公司 HUAWEI DIGITAL POWER TECHNOLOGIES CO., LTD. [CN]/[CN]
Inventors
  • 蒋正东 JIANG, Zhengdong
  • 卢茂勇 LU, Maoyong
  • 黄朱勇 HUANG, Zhuyong
Agents
  • 深圳市深佳知识产权代理事务所(普通合伙) SHENPAT INTELLECTUAL PROPERTY AGENCY
Priority Data
202011375682.630.11.2020CN
Publication Language Chinese (zh)
Filing Language Chinese (ZH)
Designated States
Title
(EN) MULTI-LEVEL INVERTER AND CONTROL METHOD FOR MULTI-LEVEL INVERTER
(FR) ONDULEUR À NIVEAUX MULTIPLES ET SON PROCÉDÉ DE COMMANDE
(ZH) 一种多电平逆变器以及多电平逆变器的控制方法
Abstract
(EN) The present application relates to the technical field of power electronics, and provided therein are a multi-level inverter, a control method for a multi-level inverter, and an uninterruptible power supply. The multi-level inverter comprises a converter bridge arm, an inverter circuit, and a controller. A positive input port of the inverter circuit is connected to a positive input port of the multi-level inverter, a negative input port of the inverter circuit is connected to a negative input port of the multi-level inverter, and an output end of the inverter circuit is connected to a positive output port of the multi-level inverter. The converter bridge arm comprises an upper half bridge arm and a lower half bridge arm, and a bridge arm midpoint is connected to a negative output port of the multi-level inverter. The controller controls, in a positive output period of the inverter circuit, the upper half bridge arm to be disconnected and the lower half bridge arm to be connected, and controls the upper half bridge arm to be connected and the lower half bridge arm to be disconnected in a negative output period. By using the present solution, the number of switch tubes used in an inverter circuit can be reduced by half, thus reducing the cost of the multi-level inverter.
(FR) La présente demande se rapporte au domaine technique de l'électronique de puissance et concerne un onduleur à niveaux multiples, un procédé de commande pour un onduleur à niveaux multiples et une alimentation sans coupure. L'onduleur à niveaux multiples comprend un bras de pont de convertisseur, un circuit onduleur et un contrôleur. Un port d'entrée positif du circuit onduleur est connecté à un port d'entrée positif de l'onduleur à niveaux multiples, un port d'entrée négatif du circuit onduleur est connecté à un port d'entrée négatif de l'onduleur à niveaux multiples et une extrémité de sortie du circuit onduleur est connectée à un port de sortie positif de l'onduleur à niveaux multiples. Le bras de pont de convertisseur comprend un bras de demi-pont supérieur et un bras de demi-pont inférieur et un point médian de bras de pont est connecté à un port de sortie négatif de l'onduleur à niveaux multiples. Le contrôleur amène, dans une période de sortie positive du circuit onduleur, le bras de demi-pont supérieur à être déconnecté et le bras de demi-pont inférieur à être connecté et amène le bras de demi-pont supérieur à être connecté et le bras de demi-pont inférieur à être déconnecté dans une période de sortie négative. En utilisant la présente solution, le nombre de tubes de commutation utilisés dans un circuit onduleur peut être réduit de moitié, réduisant ainsi le coût de l'onduleur à niveaux multiples.
(ZH) 本申请提供了一种多电平逆变器、多电平逆变器的控制方法以及不间断电源,涉及电力电子技术领域。该多电平逆变器包括换流桥臂、逆变电路和控制器。逆变电路的正输入端口连接多电平逆变器的正输入端口,逆变电路的负输入端口连接多电平逆变器的负输入端口,逆变电路的输出端连接多电平逆变器的正输出端口。换流桥臂包括上半桥臂和下半桥臂,桥臂中点连接多电平逆变器的负输出端口。控制器在逆变电路的正输出周期内控制上半桥臂断开,下半桥臂导通;在负输出周期内控制上半桥臂导通,下半桥臂断开。利用本方案可将逆变电路中使用的开关管的数量缩减一半,降低了多电平逆变器的成本。
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