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1. (WO2019044106) POWER CONVERSION DEVICE, MOTOR DRIVE UNIT AND ELECTRIC POWER STEERING DEVICE
Latest bibliographic data on file with the International Bureau    Submit observation

Pub. No.: WO/2019/044106 International Application No.: PCT/JP2018/022136
Publication Date: 07.03.2019 International Filing Date: 11.06.2018
IPC:
H02M 7/48 (2007.01) ,B62D 5/04 (2006.01) ,H02P 27/06 (2006.01)
H ELECTRICITY
02
GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
M
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
7
Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
42
Conversion of dc power input into ac power output without possibility of reversal
44
by static converters
48
using discharge tubes with control electrode or semiconductor devices with control electrode
B PERFORMING OPERATIONS; TRANSPORTING
62
LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
D
MOTOR VEHICLES; TRAILERS
5
Power-assisted or power-driven steering
04
electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
H ELECTRICITY
02
GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
P
CONTROL OR REGULATION OF ELECTRIC MOTORS, GENERATORS, OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS OR REACTORS OR CHOKE COILS
27
Arrangements or methods for the control of ac-motors characterised by the kind of supply voltage
04
using variable-frequency supply voltage, e.g. inverter or converter supply voltage
06
using dc to ac converters or inverters
Applicants:
日本電産株式会社 NIDEC CORPORATION [JP/JP]; 京都府京都市南区久世殿城町338番地 338 Kuzetonoshiro-cho, Minami-ku, Kyoto-shi, Kyoto 6018205, JP
Inventors:
小池上 貴 KOIKEGAMI,Takashi; JP
中田 雄飛 NAKADA,Yuhi; JP
菊一 貴宏 KIKUICHI,Takahiro; JP
Priority Data:
2017-16797831.08.2017JP
Title (EN) POWER CONVERSION DEVICE, MOTOR DRIVE UNIT AND ELECTRIC POWER STEERING DEVICE
(FR) DISPOSITIF DE CONVERSION DE PUISSANCE, UNITÉ D'ENTRAÎNEMENT DE MOTEUR, ET DISPOSITIF DE DIRECTION ASSISTÉE ÉLECTRIQUE
(JA) 電力変換装置、モータ駆動ユニットおよび電動パワーステアリング装置
Abstract:
(EN) In order to identify which of the switching elements of an inverter has failed, this power conversion device (100) is provided with a first drive circuit (160L, 170L) which supplies a control signal for turning ON a low side switching element of a first inverter (120) in the case of configuring a neutral point on the low side of the first inverter. The first drive circuit supplies to the low side switching element of the first inverter a control signal of a voltage higher than would be the case if no neutral point were configured in the first inverter. A control circuit (300) runs a first diagnostic, for diagnosing the presence or absence of a failure in the first and second inverter by configuring a first neutral point on the low side of the first inverter, and a second diagnostic, for diagnosing the presence or absence of a failure in the first and second inverter by configuring a second neutral point on the high side of the first inverter. The control circuit runs the first diagnosis before the second diagnosis.
(FR) Selon l'invention, afin d'identifier lequel des éléments de commutation d'un onduleur est en panne, ce dispositif de conversion de puissance (100) est pourvu d'un premier circuit d'attaque (160L, 170L) qui fournit un signal de commande pour allumer un élément de commutation côté bas d'un premier onduleur (120) dans le cas de la configuration d'un point neutre sur le côté bas du premier onduleur. Le premier circuit d'attaque fournit à l'élément de commutation côté bas du premier onduleur un signal de commande d'une tension supérieure à ce qui serait le cas si aucun point neutre n'avait été configuré dans le premier onduleur. Un circuit de commande (300) exécute un premier diagnostic, pour diagnostiquer la présence ou l'absence d'une panne dans le premier et le second onduleur en configurant un premier point neutre sur le côté bas du premier onduleur, et un second diagnostic, pour diagnostiquer la présence ou l'absence d'une panne dans le premier et le second onduleur par la configuration d'un second point neutre sur le côté haut du premier onduleur. Le circuit de commande exécute le premier diagnostic avant le second diagnostic.
(JA) インバータが備えるスイッチング素子のうちのどのスイッチング素子が故障したのかを特定する。実施形態に係る電力変換装置(100)は、第1インバータ(120)のローサイドに中性点を構成する場合に、第1インバータのローサイドスイッチング素子をオンにする制御信号を供給する第1駆動回路(160L、170L)を備える。第1駆動回路は、第1インバータに中性点を構成しない場合よりも大きい電圧の制御信号を、第1インバータのローサイドスイッチング素子に供給する。制御回路(300)は、第1インバータのローサイドに第1中性点を構成させて、第1および第2インバータの故障の有無を診断する第1診断と、第1インバータのハイサイドに第2中性点を構成させて、第1および第2インバータの故障の有無を診断する第2診断とを実行する。制御回路は、第2診断よりも第1診断を先に実行する。
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)