JPS6469293A - Inverter device - Google Patents

Inverter device

Info

Publication number
JPS6469293A
JPS6469293A JP62225345A JP22534587A JPS6469293A JP S6469293 A JPS6469293 A JP S6469293A JP 62225345 A JP62225345 A JP 62225345A JP 22534587 A JP22534587 A JP 22534587A JP S6469293 A JPS6469293 A JP S6469293A
Authority
JP
Japan
Prior art keywords
output
overcurrent
current
time
negative
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.)
Pending
Application number
JP62225345A
Other languages
Japanese (ja)
Inventor
Kenji Hirose
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP62225345A priority Critical patent/JPS6469293A/en
Publication of JPS6469293A publication Critical patent/JPS6469293A/en
Pending legal-status Critical Current

Links

Landscapes

  • Control Of Ac Motors In General (AREA)

Abstract

PURPOSE:To effectively prevent an overcurrent and to rapidly accelerate a motor by detecting that a negative load is operated at the time of an acceleration mode. CONSTITUTION:Output overcurrent detecting means detects the output overcurrent of an inverter at the time of an acceleration mode. Since a microcomputer is a positive load when the polarity of the current of a DC bus is positive, an output frequency is reduced (in step Sb) similarly to a conventional inverter, and output (in step S5). When the polarity of the current of a DC bus 9 is negative, it is negative load. Accordingly, its output frequency is raised (in step S8), and output (in step S5). Thus, the output frequency is rapidly brought into coincidence with the speed of the rotor of the motor to suppress an output current, thereby preventing an overcurrent at the time of negative load.
JP62225345A 1987-09-10 1987-09-10 Inverter device Pending JPS6469293A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62225345A JPS6469293A (en) 1987-09-10 1987-09-10 Inverter device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62225345A JPS6469293A (en) 1987-09-10 1987-09-10 Inverter device

Publications (1)

Publication Number Publication Date
JPS6469293A true JPS6469293A (en) 1989-03-15

Family

ID=16827887

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62225345A Pending JPS6469293A (en) 1987-09-10 1987-09-10 Inverter device

Country Status (1)

Country Link
JP (1) JPS6469293A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01180898U (en) * 1988-05-27 1989-12-26
WO2016121113A1 (en) * 2015-01-30 2016-08-04 三菱電機株式会社 Inverter device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01180898U (en) * 1988-05-27 1989-12-26
WO2016121113A1 (en) * 2015-01-30 2016-08-04 三菱電機株式会社 Inverter device
JP5972505B1 (en) * 2015-01-30 2016-08-17 三菱電機株式会社 Inverter device
CN107258050A (en) * 2015-01-30 2017-10-17 三菱电机株式会社 DC-to-AC converter
US10079556B2 (en) 2015-01-30 2018-09-18 Mitsubishi Electric Corporation Inverter device
CN107258050B (en) * 2015-01-30 2019-11-05 三菱电机株式会社 DC-to-AC converter

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