Processing

Please wait...

Settings

Settings

Goto Application

1. WO2013153596 - GROUND FAULT DETECTING CIRCUIT AND POWER CONVERSION DEVICE USING SAME

Publication Number WO/2013/153596
Publication Date 17.10.2013
International Application No. PCT/JP2012/059670
International Filing Date 09.04.2012
IPC
G01R 31/02 2006.01
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
31Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
02Testing of electric apparatus, lines, or components for short-circuits, discontinuities, leakage, or incorrect line connection
CPC
G01R 31/40
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
31Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
40Testing power supplies
G01R 31/42
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
31Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
40Testing power supplies
42AC power supplies
G01R 31/52
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
31Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
50Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
52Testing for short-circuits, leakage current or ground faults
H02H 3/165
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
3Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection
16responsive to fault current to earth, frame or mass
162for ac systems
165for three-phase systems
H02H 7/1216
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
7Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
10for converters; for rectifiers
12for static converters or rectifiers
1216for AC-AC converters
H02M 5/45
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
40with intermediate conversion into dc
42by static converters
44using discharge tubes or semiconductor devices to convert the intermediate dc into ac
443using devices of a thyratron or thyristor type requiring extinguishing means
45using semiconductor devices only
Applicants
  • 東芝三菱電機産業システム株式会社 TOSHIBA MITSUBISHI-ELECTRIC INDUSTRIAL SYSTEMS CORPORATION [JP]/[JP] (AllExceptUS)
  • 安藤 彰修 ANDO, Akinobu [JP]/[JP] (UsOnly)
  • 荻野 宏之 OGINO, Hiroyuki [JP]/[JP] (UsOnly)
  • 松本 泰明 MATSUMOTO, Yasuaki [JP]/[JP] (UsOnly)
  • 中林 重幸 NAKABAYASHI, Shigeyuki [JP]/[JP] (UsOnly)
  • 細川 靖彦 HOSOKAWA, Yasuhiko [JP]/[JP] (UsOnly)
Inventors
  • 安藤 彰修 ANDO, Akinobu
  • 荻野 宏之 OGINO, Hiroyuki
  • 松本 泰明 MATSUMOTO, Yasuaki
  • 中林 重幸 NAKABAYASHI, Shigeyuki
  • 細川 靖彦 HOSOKAWA, Yasuhiko
Agents
  • 特許業務法人深見特許事務所 Fukami Patent Office, p.c.
Priority Data
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) GROUND FAULT DETECTING CIRCUIT AND POWER CONVERSION DEVICE USING SAME
(FR) CIRCUIT DE DÉTECTION DE DÉFAUT DE MISE À LA TERRE ET DISPOSITIF DE CONVERSION DE PUISSANCE L'UTILISANT
(JA) 地絡検出回路およびそれを用いた電力変換装置
Abstract
(EN)
In this ground fault detecting circuit (6), one terminals of first to third resistor elements (31 to 33) are connected to first to third AC lines (RL, SL, TL), respectively, the other terminals of the first to third resistor elements (31 to 33) are connected together to one terminal of a fourth resistor element (34), and the other terminal of the fourth resistor element (34) is connected to a line of the ground voltage (GND). Based on the voltage across the terminals of the fourth resistor element (34), the ground fault detecting circuit (6) detects whether a ground fault accident occurs or not. Since current does not flow through the fourth resistor element (34) in normal time and flows through the fourth resistor element (34) when a ground fault accident occurs, it is possible to detect the occurrence of the ground fault accident at a high accuracy.
(FR)
La présente invention concerne un circuit de détection de défaut de mise à la terre (6), dans lequel une des bornes d'un premier, d'un deuxième et d'un troisième élément de résistance (31 à 33) est connectée respectivement à une première, une deuxième et une troisième ligne CA (RL, SL, TL), les autres bornes du premier, du deuxième et du troisième élément de résistance (31 à 33) étant connectées ensemble à une borne d'un quatrième élément de résistance (34), et l'autre borne du quatrième élément de résistance (34) étant connectée à une ligne de tension de mise à la terre (GND). Sur la base de la tension traversant les bornes du quatrième élément de résistance (34), le circuit de détection de défaut de mise à la terre (6) est capable de détecter la survenue ou non d'un accident de défaut de mise à la terre. Puisqu'un courant ne passe pas à travers le quatrième élément de résistance (34) en temps normal et passe à travers le quatrième élément de résistance (34) quand un accident de défaut de mise à la terre se produit, il est possible de détecter la survenue de l'accident de défaut de mise à la terre avec une grande précision.
(JA)
 この地絡検出回路(6)では、第1~第3の抵抗素子(31~33)の一方端子をそれぞれ第1~第3の交流ライン(RL,SL,TL)に接続し、第1~第3の抵抗素子(31~33)の他方端子をともに第4の抵抗素子(34)の一方端子に接続し、第4の抵抗素子(34)の他方端子を接地電圧(GND)のラインに接続し、第4の抵抗素子(34)の端子間電圧に基づいて、地絡事故が発生したか否かを判別する。正常時は第4の抵抗素子(34)に電流は流れず、地絡事故が発生すると第4の抵抗素子(34)に電流が流れるので、地絡事故の発生を高精度で検出することができる。
Latest bibliographic data on file with the International Bureau