Yasuhiro Kiyofuji

Person

Hitachi-shi, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Control device for railway power conditioner and control system for...
- Patent number 9,573,489
- Issue date Feb 21, 2017
- Hitachi, Ltd.
- Yasuhiro Nakatsuka
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Power conversion apparatus and high-voltage DC transmission system
- Patent number 9,252,684
- Issue date Feb 2, 2016
- Hitachi, Ltd.
- Shigenori Inoue
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Duplexed operation processor control system, and duplexed operation...
- Patent number 9,208,037
- Issue date Dec 8, 2015
- Hitachi, Ltd.
- Toshiki Shimizu
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Doubly-fed generator and doubly-fed electric machine
- Patent number 8,896,261
- Issue date Nov 25, 2014
- Hitachi, Ltd.
- Akira Bando
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
DC/AC power converter with DC side double frequency pulsation suppr...
- Patent number 8,867,247
- Issue date Oct 21, 2014
- Hitachi, Ltd.
- Akira Bando
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Fault diagnosis apparatus and fault diagnosis method of multi-chann...
- Patent number 8,386,862
- Issue date Feb 26, 2013
- Hitachi, Ltd.
- Hisashi Terae
- G05 - CONTROLLING REGULATING
Information Patent Grant
Control apparatus and control method
- Patent number 8,255,769
- Issue date Aug 28, 2012
- Hitachi, Ltd.
- Satoru Funaki
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Electric motor control system, series hybrid vehicle, electric moto...
- Patent number 7,888,894
- Issue date Feb 15, 2011
- Hitachi, Ltd.
- Naoshi Sugawara
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Electric drive system for vehicle, electric control system for vehi...
- Patent number 7,841,434
- Issue date Nov 30, 2010
- Hitachi, Ltd.
- Keizo Shimada
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Power converting device and method for controlling the same
- Patent number 7,643,317
- Issue date Jan 5, 2010
- Hitachi, Ltd.
- Shuji Katoh
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
AC drive apparatus, vehicle control apparatus, and power conversion...
- Patent number 7,315,144
- Issue date Jan 1, 2008
- Hitachi, Ltd.
- Kazuhiro Imaie
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Guarantee charge processing method and apparatus
- Patent number 6,839,696
- Issue date Jan 4, 2005
- Hitachi, Ltd.
- Takashi Yabutani
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Phase synchronization system for connecting a power converter to a...
- Patent number 6,304,468
- Issue date Oct 16, 2001
- Hitachi, Ltd.
- Masaya Ichinose
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

Information Patent Application
MODULAR MULTILEVEL POWER CONVERTER AND VARIABLE SPEED GENERATOR-MOTOR
- Publication number 20230369988
- Publication date Nov 16, 2023
- HITACHI MITSUBISHI HYDRO CORPORATION
- Akira BANDO
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
POWER CONVERSION APPARATUS AND HIGH-VOLTAGE DC TRANSMISSION SYSTEM
- Publication number 20140211528
- Publication date Jul 31, 2014
- Hitachi, Ltd
- Shigenori INOUE
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Power Converter and its Control Method
- Publication number 20140167701
- Publication date Jun 19, 2014
- Hitachi, Ltd
- Yasuhiro NAKATSUKA
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Control Device for Railway Power Conditioner and Control System for...
- Publication number 20140152087
- Publication date Jun 5, 2014
- Hitachi, Ltd
- Yasuhiro NAKATSUKA
- B60 - VEHICLES IN GENERAL
Information Patent Application
Power Conversion Apparatus and Control Method Thereof
- Publication number 20140078796
- Publication date Mar 20, 2014
- Hitachi, Ltd
- Shigenori INOUE
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Doubly-Fed Generator and Doubly-Fed Electric Machine
- Publication number 20130241463
- Publication date Sep 19, 2013
- Hitachi, Ltd
- Akira Bando
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Semiconductor Power Conversion Apparatus
- Publication number 20120170333
- Publication date Jul 5, 2012
- Hitachi, Ltd
- Akira Bando
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
FAULT DIAGNOSIS APPARATUS AND FAULT DIAGNOSIS METHOD OF MULTI-CHANN...
- Publication number 20100235699
- Publication date Sep 16, 2010
- Hitachi, Ltd.
- Hisashi TERAE
- G05 - CONTROLLING REGULATING
Information Patent Application
CONTROL APPARATUS AND CONTROL METHOD
- Publication number 20100174967
- Publication date Jul 8, 2010
- Hitachi, Ltd.
- Satoru Funaki
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Duplexed operation processor control system, and duplexed operation...
- Publication number 20090319756
- Publication date Dec 24, 2009
- Hitachi, Ltd.
- Toshiki Shimizu
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
ELECTRIC DRIVE SYSTEM FOR VEHICLE, ELECTRIC CONTROL SYSTEM FOR VEHI...
- Publication number 20090218966
- Publication date Sep 3, 2009
- Keizo Shimada
- B60 - VEHICLES IN GENERAL
Information Patent Application
POWER CONVERTING DEVICE AND METHOD FOR CONTROLLING THE SAME
- Publication number 20090168474
- Publication date Jul 2, 2009
- Shuji Katoh
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Application
ELECTRIC MOTOR CONTROL SYSTEM, SERIES HYBRID VEHICLE, ELECTRIC MOTO...
- Publication number 20080179122
- Publication date Jul 31, 2008
- Naoshi SUGAWARA
- B60 - VEHICLES IN GENERAL
Information Patent Application
AC drive apparatus, vehicle control apparatus, and power conversion...
- Publication number 20060181235
- Publication date Aug 17, 2006
- Kazuhiro Imaie
- B60 - VEHICLES IN GENERAL
Information Patent Application
Electric drive system for vehicle, electric control system for vehi...
- Publication number 20060086547
- Publication date Apr 27, 2006
- Keizo Shimada
- B60 - VEHICLES IN GENERAL
Information Patent Application
Guarantee charge processing method and apparatus
- Publication number 20050073201
- Publication date Apr 7, 2005
- Takashi Yabutani
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Power converter system and method of controlling power converter
- Publication number 20010005321
- Publication date Jun 28, 2001
- Masaya Ichinose
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC

Yasuhiro Kiyofuji

Person

Patents Grantslast 30 patents

Control device for railway power conditioner and control system for...

Power conversion apparatus and high-voltage DC transmission system

Duplexed operation processor control system, and duplexed operation...

Doubly-fed generator and doubly-fed electric machine

DC/AC power converter with DC side double frequency pulsation suppr...

Fault diagnosis apparatus and fault diagnosis method of multi-chann...

Control apparatus and control method

Electric motor control system, series hybrid vehicle, electric moto...

Electric drive system for vehicle, electric control system for vehi...

Power converting device and method for controlling the same

AC drive apparatus, vehicle control apparatus, and power conversion...

Guarantee charge processing method and apparatus

Phase synchronization system for connecting a power converter to a...

Patents Applicationslast 30 patents

MODULAR MULTILEVEL POWER CONVERTER AND VARIABLE SPEED GENERATOR-MOTOR

POWER CONVERSION APPARATUS AND HIGH-VOLTAGE DC TRANSMISSION SYSTEM

Power Converter and its Control Method

Control Device for Railway Power Conditioner and Control System for...

Power Conversion Apparatus and Control Method Thereof

Doubly-Fed Generator and Doubly-Fed Electric Machine

Semiconductor Power Conversion Apparatus

FAULT DIAGNOSIS APPARATUS AND FAULT DIAGNOSIS METHOD OF MULTI-CHANN...

CONTROL APPARATUS AND CONTROL METHOD

Duplexed operation processor control system, and duplexed operation...

ELECTRIC DRIVE SYSTEM FOR VEHICLE, ELECTRIC CONTROL SYSTEM FOR VEHI...

POWER CONVERTING DEVICE AND METHOD FOR CONTROLLING THE SAME

ELECTRIC MOTOR CONTROL SYSTEM, SERIES HYBRID VEHICLE, ELECTRIC MOTO...

AC drive apparatus, vehicle control apparatus, and power conversion...

Electric drive system for vehicle, electric control system for vehi...

Guarantee charge processing method and apparatus

Power converter system and method of controlling power converter