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1. WO2019187454 - ELECTRIC VEHICLE DRIVE SYSTEM, SEMICONDUCTOR CURRENT REDUCER, AND FAILURE DETECTION METHOD THEREFOR

Publication Number WO/2019/187454
Publication Date 03.10.2019
International Application No. PCT/JP2018/048453
International Filing Date 28.12.2018
IPC
B60L 3/00 2019.01
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
3Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
B60L 3/04 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
3Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
04Cutting-off the power supply under fault conditions
H02M 7/48 2007.01
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
CPC
B60L 3/00
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES
3Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
B60L 3/04
BPERFORMING OPERATIONS; TRANSPORTING
60VEHICLES IN GENERAL
LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES
3Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
04Cutting off the power supply under fault conditions
H02M 7/48
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
Y02T 10/72
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
TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
10Road transport of goods or passengers
60Other road transportation technologies with climate change mitigation effect
72Electric energy management in electromobility
Applicants
  • 株式会社日立製作所 HITACHI, LTD. [JP]/[JP]
Inventors
  • 成木 航 NARUKI, Wataru
  • 安東 正登 ANDO, Masato
Agents
  • 特許業務法人サンネクスト国際特許事務所 SUNNEXT INTERNATIONAL PATENT OFFICE
Priority Data
2018-06016927.03.2018JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) ELECTRIC VEHICLE DRIVE SYSTEM, SEMICONDUCTOR CURRENT REDUCER, AND FAILURE DETECTION METHOD THEREFOR
(FR) SYSTÈME D'ENTRAÎNEMENT DE VÉHICULE ÉLECTRIQUE, RÉDUCTEUR DE COURANT À SEMI-CONDUCTEUR ET PROCÉDÉ DE DÉTECTION DE DÉFAILLANCE ASSOCIÉ
(JA) 電気車用駆動システム、半導体減流器、およびその故障検知方法
Abstract
(EN)
A control device for an electric vehicle drive system, configured so as to: commutate an overcurrent to at least one resistance in a resistance section, by switching off a semiconductor switch element (connected in series to a circuit breaker and an inverter), if an overcurrent is detected; and to cut off the commuted and reduced current by turning off the circuit breaker. The electric vehicle drive system has: a first current detector for detecting overcurrent; and a second current detector for detecting the value of a current that flows through either a semiconductor switch element or the resistance section in a semiconductor current reducer. The control device detects that the semiconductor switch element has failed if a prescribed condition is satisfied that has been applied to a current value, said current value: being the current value obtained by at least the second current detector; and being for the current flowing through the resistance section.
(FR)
La présente invention concerne un dispositif de commande pour un système d'entraînement de véhicule électrique, conçu de façon à : commuter une surintensité vers au moins une résistance dans une section de résistance, en éteignant un élément de commutation à semi-conducteur (connecté en série à un disjoncteur et à un onduleur), si une surintensité est détectée ; et pour couper le courant commuté et réduit en éteignant le disjoncteur. Le système d'entraînement de véhicule électrique comprend : un premier détecteur de courant pour détecter une surintensité ; et un second détecteur de courant pour détecter la valeur d'un courant qui circule à travers un élément de commutation à semi-conducteur ou la section de résistance dans un réducteur de courant à semi-conducteur. Le dispositif de commande détecte que l'élément de commutation à semi-conducteur a échoué si une condition prescrite qui a été appliquée à une valeur de courant est satisfaite, ladite valeur de courant : étant la valeur de courant obtenue par au moins le second détecteur de courant ; et étant relative au courant circulant à travers la section de résistance.
(JA)
電気車用駆動システムの制御装置が、過電流を検出した場合に半導体スイッチ素子(断流器とインバータとに直列に接続された)をオフにすることで当該過電流を抵抗部における少なくとも1つの抵抗に転流し、転流して減流された電流を、断流器をオフにすることで遮断するようになっている。電気車用駆動システムは、過電流検出用の第1の電流検出器に加えて、半導体減流器における半導体スイッチ素子と抵抗部とのうちのいずれかを流れる電流値を検出する第2の電流検出器を有する。制御装置は、少なくとも第2の電流検出器を基に得られる電流値であって抵抗部を流れる電流の電流値に関して設けられた所定の条件が満たされているならば半導体スイッチ素子が故障していると検知する。
Also published as
JP2020509670
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