JP7058764B1 - 電力変換装置、半導体スイッチ駆動装置及び制御方法 - Google Patents
電力変換装置、半導体スイッチ駆動装置及び制御方法 Download PDFInfo
- Publication number
- JP7058764B1 JP7058764B1 JP2020563792A JP2020563792A JP7058764B1 JP 7058764 B1 JP7058764 B1 JP 7058764B1 JP 2020563792 A JP2020563792 A JP 2020563792A JP 2020563792 A JP2020563792 A JP 2020563792A JP 7058764 B1 JP7058764 B1 JP 7058764B1
- Authority
- JP
- Japan
- Prior art keywords
- semiconductor switch
- power supply
- unit
- voltage
- switch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—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
- H02M1/00—Details of apparatus for conversion
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—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
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/5387—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/539—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters with automatic control of output wave form or frequency
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/08—Modifications for protecting switching circuit against overcurrent or overvoltage
- H03K17/081—Modifications for protecting switching circuit against overcurrent or overvoltage without feedback from the output circuit to the control circuit
- H03K17/0812—Modifications for protecting switching circuit against overcurrent or overvoltage without feedback from the output circuit to the control circuit by measures taken in the control circuit
- H03K17/08128—Modifications for protecting switching circuit against overcurrent or overvoltage without feedback from the output circuit to the control circuit by measures taken in the control circuit in composite switches
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/08—Modifications for protecting switching circuit against overcurrent or overvoltage
- H03K17/082—Modifications for protecting switching circuit against overcurrent or overvoltage by feedback from the output to the control circuit
- H03K17/0828—Modifications for protecting switching circuit against overcurrent or overvoltage by feedback from the output to the control circuit in composite switches
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
- H03K17/687—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being field-effect transistors
- H03K17/689—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being field-effect transistors with galvanic isolation between the control circuit and the output circuit
- H03K17/691—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being field-effect transistors with galvanic isolation between the control circuit and the output circuit using transformer coupling
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/78—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used using opto-electronic devices, i.e. light-emitting and photoelectric devices electrically- or optically-coupled
- H03K17/785—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used using opto-electronic devices, i.e. light-emitting and photoelectric devices electrically- or optically-coupled controlling field-effect transistor switches
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
- H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
- H02P29/02—Providing protection against overload without automatic interruption of supply
- H02P29/024—Detecting a fault condition, e.g. short circuit, locked rotor, open circuit or loss of load
- H02P29/0241—Detecting a fault condition, e.g. short circuit, locked rotor, open circuit or loss of load the fault being an overvoltage
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
- H02P29/02—Providing protection against overload without automatic interruption of supply
- H02P29/024—Detecting a fault condition, e.g. short circuit, locked rotor, open circuit or loss of load
- H02P29/027—Detecting a fault condition, e.g. short circuit, locked rotor, open circuit or loss of load the fault being an over-current
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
- H03K2217/0081—Power supply means, e.g. to the switch driver
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Power Conversion In General (AREA)
Abstract
Description
まず、実施形態の電力変換装置1について説明する。
図1Aは、実施形態の電力変換装置1の概略構成図である。
電力変換装置1は、主回路ユニット2と、半導体スイッチ駆動装置3とを備える。
図1Aに示す主回路ユニット2は、例えば一つ以上の半導体スイッチQを含む。半導体スイッチQの種類として、IGBT(Insulated Gate Bipolar Transistor)を例示するが、これに制限されず、他の種類の半導体スイッチであってよい。主回路ユニット2には、電極として用いられる端子TC、TE及びTGがそれぞれ設けられている。例えば、端子TC、TE及びTGは、主回路ユニット2の筐体の内部で、半導体スイッチ本体、例えば、IGBTのコレクタ、エミッタ及びゲートにそれぞれ接続される。半導体スイッチQのエミッタ電位、つまり主回路ユニット2の端子TEの電位を基準電位とする。主回路ユニット2のより具体的な構成については、後述する。
半導体スイッチQは、ゲートとエミッタの間、換言すれば、端子TG(制御端子)と端子TE(共通電位になる端子)間が短絡した故障状態(制御端子短絡故障という。)になることがある。半導体スイッチQのゲートとエミッタの間が短絡すると、図1Bに示す矢印のように、ゲートパルスに応じて半導体スイッチQをオンに制御するときも、ゲートパルスがなく半導体スイッチQをオフに制御するときも短絡電流が流れることがある。
第1の実施形態において主回路ユニット2の概略構成について説明したが、本変形例では、より具体的な構成例を例示する。
主回路ユニット2は、例えば、レグLUからLWを備える。主回路ユニット2は、直流電力を3相交流電力に変換する。レグLUからLWは、同様に構成されていて、それぞれが電動機MのU相、V相、W相の巻線(不図示)に対応づけられている。主回路ユニット2は、3相交流電力を電動機Mに供給する。
図4は、実施形態の電力変換装置1Aの概略構成図である。
図4に示す主回路ユニット2Uと2V(第1主回路と第2主回路と呼ぶ。)は、それぞれ1つのIGBTを含む主回路ユニット2の一例である。主回路ユニット2Uと2Vは、前述の主回路ユニット2に相当する。
主回路ユニット2Uと2Vは、それぞれ半導体スイッチQU(第1半導体スイッチ)とQV(第2半導体スイッチ)とを含む。
例えば、ゲート電源20Aは、ゲート電源本体21と、パルストランス221と222(第1パルストランスと第2パルストランス)とを備える。
Claims (9)
- 主回路の半導体スイッチにその制御信号を供給して、前記半導体スイッチを駆動する駆動部と、
前記駆動部に電力を供給する電源部と、
前記電源部の1次側の過電圧状態の検出により又は制御により前記電源部に対する電力の供給を遮断するスイッチと、
前記半導体スイッチの制御端子の電圧に基づいた前記制御により、前記スイッチの導通状態を切り替える制御部と
を備える半導体スイッチ駆動装置。 - 前記駆動部は、
前記半導体スイッチをオフにする場合に、前記制御信号を負にバイアスして、
前記制御部は、
前記半導体スイッチをオフにする場合の前記制御端子の電圧が、所定値よりも小さい場合に、前記スイッチによって前記電源部に対する電力の供給を遮断させる、
請求項1に記載の半導体スイッチ駆動装置。 - 前記電源部の出力側は、前記主回路の電源から絶縁されている、
請求項1に記載の半導体スイッチ駆動装置。 - 前記半導体スイッチは、IGBTである、
請求項1に記載の半導体スイッチ駆動装置。 - 前記半導体スイッチの制御端子の電圧を検出する電圧検出部
を備える請求項1に記載の半導体スイッチ駆動装置。 - 第1制御端子に供給される第1制御信号によって制御される第1半導体スイッチを備える第1主回路と、
前記第1制御端子に前記第1制御信号を供給して、前記第1半導体スイッチを駆動する第1駆動部と、
前記第1制御端子の電圧を検出する電圧検出部と、
第2制御端子に供給される第2制御信号によって制御される第2半導体スイッチを備える第2主回路と、
前記第2制御端子に前記第2制御信号を供給して、前記第2半導体スイッチを駆動する第2駆動部と、
前記第1駆動部と前記第2駆動部に電力を供給する電源部と、
前記電源部の1次側の過電圧状態の検出により又は制御により前記電源部に対する電力の供給を遮断するスイッチと、
前記第1制御端子の電圧に基づいた前記制御により、前記スイッチの導通状態を切り替える制御部と
を備える電力変換装置。 - 前記電源部は、
前記電源部の1次側回路と、
前記1次側回路から供給される電力を変換して、前記第1駆動部に供給する電力を生成する第1パルストランスと、
前記1次側回路から供給される電力を変換して、前記第2駆動部に供給する電力を生成する第2パルストランスと、
を備える請求項6に記載の電力変換装置。 - 前記制御部は、
前記検出された前記第1制御端子の電圧に基づいて、前記第1半導体スイッチ又は前記第2半導体スイッチの短絡故障を検出する、
請求項6に記載の電力変換装置。 - 主回路の半導体スイッチにその制御信号を供給して、前記半導体スイッチを駆動する駆動部と、
前記駆動部に電力を供給する電源部と、
前記電源部の1次側の過電圧状態の検出により又は制御により前記電源部に対する電力の供給を遮断するスイッチと、を備える半導体スイッチ駆動装置の制御方法であって、
前記半導体スイッチの制御端子の電圧に基づいて、前記スイッチの導通状態を切り替える過程
を含む制御方法。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2020/018943 WO2021229676A1 (ja) | 2020-05-12 | 2020-05-12 | 電力変換装置、半導体スイッチ駆動装置及び制御方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPWO2021229676A1 JPWO2021229676A1 (ja) | 2021-11-18 |
JP7058764B1 true JP7058764B1 (ja) | 2022-04-22 |
Family
ID=78525989
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2020563792A Active JP7058764B1 (ja) | 2020-05-12 | 2020-05-12 | 電力変換装置、半導体スイッチ駆動装置及び制御方法 |
Country Status (4)
Country | Link |
---|---|
US (1) | US20230208275A1 (ja) |
JP (1) | JP7058764B1 (ja) |
CN (1) | CN114128116B (ja) |
WO (1) | WO2021229676A1 (ja) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006050865A (ja) * | 2004-08-09 | 2006-02-16 | Toshiba Mitsubishi-Electric Industrial System Corp | 半導体電力変換装置の駆動回路 |
JP2007236126A (ja) * | 2006-03-02 | 2007-09-13 | Sharp Corp | 電源装置およびこれを用いた電子機器 |
JP2018042439A (ja) * | 2016-09-09 | 2018-03-15 | 東芝三菱電機産業システム株式会社 | 電力変換装置 |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004312924A (ja) * | 2003-04-09 | 2004-11-04 | Mitsubishi Electric Corp | 半導体デバイスの駆動回路 |
JP5750311B2 (ja) * | 2011-05-31 | 2015-07-22 | 日立オートモティブシステムズ株式会社 | インバータ駆動装置 |
CN106104993B (zh) * | 2014-05-30 | 2019-05-10 | 三菱电机株式会社 | 电力用半导体元件的驱动电路 |
JP6459519B2 (ja) * | 2015-01-06 | 2019-01-30 | 富士電機株式会社 | 電力変換装置の保護装置 |
US10367428B2 (en) * | 2015-06-15 | 2019-07-30 | Toshiba Mitsubishi-Electric Industrial Systems Corporation | Power conversion device |
CN106374731B (zh) * | 2015-07-23 | 2019-10-18 | 乐星产电(无锡)有限公司 | 变频驱动电路、过流保护方法及装置 |
KR20170092049A (ko) * | 2016-02-02 | 2017-08-10 | 엘에스산전 주식회사 | 전자접촉기의 과열보호회로 |
JP6653452B2 (ja) * | 2016-09-20 | 2020-02-26 | パナソニックIpマネジメント株式会社 | 調光装置の保護回路、及び調光装置 |
JP2018057105A (ja) * | 2016-09-27 | 2018-04-05 | 株式会社日立製作所 | 半導体駆動装置ならびにこれを用いた電力変換装置 |
JP6939059B2 (ja) * | 2017-04-27 | 2021-09-22 | 富士電機株式会社 | 半導体素子の駆動装置 |
JP7305303B2 (ja) * | 2018-03-20 | 2023-07-10 | 三菱電機株式会社 | 駆動装置及びパワーモジュール |
JP7131978B2 (ja) * | 2018-06-21 | 2022-09-06 | 株式会社東芝 | 電力用半導体駆動装置及び電力変換装置 |
WO2020110225A1 (ja) * | 2018-11-28 | 2020-06-04 | 東芝三菱電機産業システム株式会社 | 電力変換装置 |
CN209267544U (zh) * | 2018-12-20 | 2019-08-16 | 郑州轻工业学院 | 一种igbt的驱动和保护电路 |
US20240072635A1 (en) * | 2021-01-19 | 2024-02-29 | Hitachi Astemo, Ltd. | Gate drive circuit and power conversion device |
US11916544B2 (en) * | 2022-03-01 | 2024-02-27 | Infineon Technologies Austria Ag | Short circuit detection and limiting channel current in transistor before turn off in short circuit condition |
JP7279831B1 (ja) * | 2022-03-17 | 2023-05-23 | 株式会社明電舎 | 電力変換器のゲート駆動回路 |
CN115102137A (zh) * | 2022-06-28 | 2022-09-23 | 徐州徐工矿业机械有限公司 | 一种电传动矿用自卸车的永磁驱动系统控制方法 |
-
2020
- 2020-05-12 CN CN202080049619.5A patent/CN114128116B/zh active Active
- 2020-05-12 JP JP2020563792A patent/JP7058764B1/ja active Active
- 2020-05-12 WO PCT/JP2020/018943 patent/WO2021229676A1/ja active Application Filing
- 2020-05-12 US US17/996,532 patent/US20230208275A1/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006050865A (ja) * | 2004-08-09 | 2006-02-16 | Toshiba Mitsubishi-Electric Industrial System Corp | 半導体電力変換装置の駆動回路 |
JP2007236126A (ja) * | 2006-03-02 | 2007-09-13 | Sharp Corp | 電源装置およびこれを用いた電子機器 |
JP2018042439A (ja) * | 2016-09-09 | 2018-03-15 | 東芝三菱電機産業システム株式会社 | 電力変換装置 |
Also Published As
Publication number | Publication date |
---|---|
US20230208275A1 (en) | 2023-06-29 |
JPWO2021229676A1 (ja) | 2021-11-18 |
WO2021229676A1 (ja) | 2021-11-18 |
CN114128116B (zh) | 2024-01-16 |
CN114128116A (zh) | 2022-03-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US20190386483A1 (en) | Igbt short-circuit detection and protection circuit and igbt-based controllable rectifier circuit | |
US10003273B2 (en) | Power conversion device | |
US9350342B2 (en) | System and method for generating an auxiliary voltage | |
US9768607B2 (en) | System and method for a multi-phase snubber circuit | |
JP2013258862A (ja) | マルチレベル電力変換回路の保護制御方式 | |
US10476373B2 (en) | Electronic apparatus and system and method for controlling series connected switch modules | |
CN110401335B (zh) | 驱动电路、功率模块以及电力变换系统 | |
CN102893525A (zh) | 对电压驱动型元件进行驱动的驱动装置 | |
US10742204B2 (en) | Semiconductor device and power module | |
JPWO2019038957A1 (ja) | 制御回路および電力変換装置 | |
KR101538094B1 (ko) | 인버터 시스템의 스위칭 소자 고장 검출 장치 및 방법 | |
JP2018011467A (ja) | 半導体スイッチング素子のゲート駆動回路 | |
US10727729B2 (en) | Power converter | |
US20030197533A1 (en) | Gate driver for MOS control semiconductor devices | |
US11050358B2 (en) | Power module with built-in drive circuit | |
KR20030082885A (ko) | 전력용 반도체장치 | |
JP2018061301A (ja) | 半導体駆動装置ならびにそれを用いた電力変換装置 | |
JP7058764B1 (ja) | 電力変換装置、半導体スイッチ駆動装置及び制御方法 | |
US9929677B2 (en) | Three-level active neutral point converter | |
US20220069735A1 (en) | Semiconductor device | |
JPWO2020183702A1 (ja) | 半導体デバイスのための電圧バランス回路 | |
CN115733372A (zh) | 变频器 | |
JP2007252020A (ja) | 電力変換装置 | |
JP2013165578A (ja) | 自己消弧形半導体素子のゲート駆動回路及び電力変換装置 | |
US9780641B1 (en) | Protection circuit with surge protection capability |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20201111 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20211102 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20211125 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20220315 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20220412 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 7058764 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |