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1. WO2018033214 - MODULATION OF AC/AC MMC

Publication Number WO/2018/033214
Publication Date 22.02.2018
International Application No. PCT/EP2016/069657
International Filing Date 18.08.2016
Chapter 2 Demand Filed 18.06.2018
IPC
H02M 5/293 2006.1
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
5Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
02without intermediate conversion into dc
04by static converters
22using discharge tubes with control electrode or semiconductor devices with control electrode
275using devices of a triode or transistor type requiring continuous application of a control signal
293using semiconductor devices only
H02M 1/00 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
1Details of apparatus for conversion
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
CPC
H02J 3/01
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
3Circuit arrangements for ac mains or ac distribution networks
01Arrangements for reducing harmonics or ripples
H02J 3/34
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
3Circuit arrangements for ac mains or ac distribution networks
34Arrangements for transfer of electric power between networks of substantially different frequency
H02M 1/0006
H02M 1/08
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
1Details of apparatus for conversion
08Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
H02M 1/12
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
1Details of apparatus for conversion
12Arrangements for reducing harmonics from ac input or output
H02M 5/225
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
5Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
02without intermediate conversion into dc
04by static converters
22using discharge tubes with control electrode or semiconductor devices with control electrode
225comprising two stages of AC-AC conversion, e.g. having a high frequency intermediate link
Applicants
  • ABB SCHWEIZ AG [CH]/[CH]
Inventors
  • VASILADIOTIS, Michail
  • GEYER, Tobias
  • CHRISTE, Alexandre
Agents
  • SAVELA, Reino
Priority Data
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) MODULATION OF AC/AC MMC
(FR) MODULATION DE MMC CA/CA
Abstract
(EN)
The present disclosure relates to a method of decoupled modulation of a direct AC/AC MMC 1 between a first AC network L having a first waveform and a second AC network R having a second waveform, the MMC having a double-star topology with a plurality of phase legs 11, each phase leg having a first branch 12a and a second branch 12b, each of the first and second branches comprising a plurality of series connected bipolar cells 13. The method comprises performing a first modulation based on a reference signal of the first AC network, independently of a reference signal of the second AC network, to generate, for each phase leg, a first integer command signal corresponding to a first combination of cell states in the first and second branches of the phase leg needed for generating the first waveform. The method also comprises performing a second modulation based on the reference signal of the second AC network, independently of the reference signal of the first AC network to generate,for each phase leg, a second integer command signal corresponding to a second combination of cell states in the first and second branches of the phase leg needed for generating the second waveform. The method also comprises, based on the first and second integer command signals, mapping to each branch a number of cell states to be used for concurrently generating both the first and second waveforms, generating branch-level command signals to a capacitor voltage balancing algorithm. The method also comprises, based on the mapping and the balancing algorithm, sending firing signals to the plurality of cells of each branch.
(FR)
La présente invention concerne un procédé de modulation découplée d'un MMC CA/CA direct 1 entre un premier réseau CA L ayant une première forme d'onde et un second réseau CA R ayant une seconde forme d'onde, le MMC ayant une topologie à double étoile avec une pluralité de branches de phase 11, chaque branche de phase ayant une première branche 12a et une seconde branche 12b, chacune des première et seconde branches comprenant une pluralité de cellules bipolaires 13 connectées en série. Le procédé consiste à réaliser une première modulation sur la base d'un signal de référence du premier réseau CA, indépendamment d'un signal de référence du second réseau CA, pour générer, pour chaque branche de phase, un premier signal de commande de nombre entier correspondant à une première combinaison d'états de cellule dans les première et seconde branches de la branche de phase nécessaire pour générer la première forme d'onde. Le procédé consiste également à réaliser une seconde modulation sur la base du signal de référence du second réseau CA, indépendamment du signal de référence du premier réseau CA, pour générer, pour chaque branche de phase, un second signal de commande de nombre entier correspondant à une seconde combinaison d'états de cellule dans les première et seconde branches de la branche de phase nécessaire pour générer la seconde forme d'onde. Le procédé consiste également, sur la base des premier et second signaux de commande de nombre entier, à mapper à chaque branche un certain nombre d'états de cellule à utiliser pour générer simultanément à la fois les première et seconde formes d'onde, à générer des signaux de commande de niveau de branche à destination d'un algorithme d'équilibrage de tension de condensateur. Le procédé consiste également, sur la base du mappage et de l'algorithme d'équilibrage, à envoyer des signaux de déclenchement à la pluralité de cellules de chaque branche.
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