JPS57110093A - Controlling method for inverter - Google Patents

Controlling method for inverter

Info

Publication number
JPS57110093A
JPS57110093A JP55183805A JP18380580A JPS57110093A JP S57110093 A JPS57110093 A JP S57110093A JP 55183805 A JP55183805 A JP 55183805A JP 18380580 A JP18380580 A JP 18380580A JP S57110093 A JPS57110093 A JP S57110093A
Authority
JP
Japan
Prior art keywords
frequency
cpu9
time duration
signal
time
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
JP55183805A
Other languages
Japanese (ja)
Inventor
Makoto Fukuyama
Takeshi Shioda
Koji Toyokawa
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.)
Toyo Denki Seizo KK
Toyo Electric Manufacturing Ltd
Original Assignee
Toyo Denki Seizo KK
Toyo Electric Manufacturing Ltd
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 Toyo Denki Seizo KK, Toyo Electric Manufacturing Ltd filed Critical Toyo Denki Seizo KK
Priority to JP55183805A priority Critical patent/JPS57110093A/en
Publication of JPS57110093A publication Critical patent/JPS57110093A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
    • H02P23/0077—Characterised by the use of a particular software algorithm

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Ac Motors In General (AREA)
  • Inverter Devices (AREA)

Abstract

PURPOSE:To maximize the oprating efficiency of an inverter irrespective of the set rotating speed and the magnitude of a load without necessity of an additional circuit by simply calculating without storing a pulse pattern to obtain a pulse width modulation waveform. CONSTITUTION:A microprocessor CPU9 reads the number n3 of basic pulses determined by the maximum efficiency operating frequency for each operating frequency of an operating frequency setting unit 8 from a memory ROM10, and sets it to an external frequency divider 12. On the other hand, since a basic oscillation frequency f0 from a reference oscillator 11 is applied to the frequency divider 12, the frequency f0 is divided by 1/n3, and is inputted to an external timer 13. The CPU9 unloads the ON time duration of voltage application and OFF time duration from a memory RAM14 and outputs them to a gate circuit 15, thereby controlling a main circuit controller 7. The CPU9 further calculates the time duration of a gate signal from the period of time up to the time up of the timer 13, the signal of a rotating speed detector 3 and the signal from the unit 8, and stores it in the RAM14.
JP55183805A 1980-12-26 1980-12-26 Controlling method for inverter Pending JPS57110093A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55183805A JPS57110093A (en) 1980-12-26 1980-12-26 Controlling method for inverter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55183805A JPS57110093A (en) 1980-12-26 1980-12-26 Controlling method for inverter

Publications (1)

Publication Number Publication Date
JPS57110093A true JPS57110093A (en) 1982-07-08

Family

ID=16142196

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55183805A Pending JPS57110093A (en) 1980-12-26 1980-12-26 Controlling method for inverter

Country Status (1)

Country Link
JP (1) JPS57110093A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1984001865A1 (en) * 1982-11-02 1984-05-10 Fanuc Ltd Controller for ac motor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1984001865A1 (en) * 1982-11-02 1984-05-10 Fanuc Ltd Controller for ac motor

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