JPS61162300U - - Google Patents
Info
- Publication number
- JPS61162300U JPS61162300U JP4544385U JP4544385U JPS61162300U JP S61162300 U JPS61162300 U JP S61162300U JP 4544385 U JP4544385 U JP 4544385U JP 4544385 U JP4544385 U JP 4544385U JP S61162300 U JPS61162300 U JP S61162300U
- Authority
- JP
- Japan
- Prior art keywords
- carrier frequency
- inverter
- electric motor
- minimum value
- sensor circuit
- 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
Links
- 238000001514 detection method Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
Landscapes
- Control Of Ac Motors In General (AREA)
Description
図面は本考案の一実施例を示す回路図である。
1……誘導電動機、2……インバータ主回路、
5……速度設定器、6……電圧―周波数変換器、
7……ROM、8……D/A変換器、9……キヤ
リア発生回路、10……コンパレータ、11……
ゲート回路、12……センサ、13……検出回路
、14……最小値ホールド回路、15……キヤリ
ア周波数設定回路。
The drawing is a circuit diagram showing an embodiment of the present invention. 1...Induction motor, 2...Inverter main circuit,
5... Speed setting device, 6... Voltage-frequency converter,
7...ROM, 8...D/A converter, 9...Carrier generation circuit, 10...Comparator, 11...
Gate circuit, 12...sensor, 13...detection circuit, 14...minimum value hold circuit, 15...carrier frequency setting circuit.
Claims (1)
て、電動機の振動又は該振動による騒音を検出す
るセンサ回路と、インバータのキヤリア周波数を
その許容範囲の最小値から最大値まで変化させた
ときの前記センサ回路からの検出レベルが最小値
になるように該キヤリア周波数を設定するキヤリ
ア周波数制御回路とを備えたことを特徴とするP
WM方式インバータ。 In a PWM type inverter that drives an electric motor, a sensor circuit detects vibrations of the electric motor or noise caused by the vibrations, and detection from the sensor circuit when the carrier frequency of the inverter is changed from a minimum value to a maximum value within its allowable range. A carrier frequency control circuit that sets the carrier frequency so that the level becomes a minimum value.
WM method inverter.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4544385U JPS61162300U (en) | 1985-03-28 | 1985-03-28 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4544385U JPS61162300U (en) | 1985-03-28 | 1985-03-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS61162300U true JPS61162300U (en) | 1986-10-07 |
Family
ID=30558951
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4544385U Pending JPS61162300U (en) | 1985-03-28 | 1985-03-28 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS61162300U (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01303093A (en) * | 1988-05-30 | 1989-12-06 | Daikin Ind Ltd | Controller for pulse width modulation of inverter |
JPH02136072A (en) * | 1988-11-17 | 1990-05-24 | Mitsubishi Electric Corp | Pulse width modulation type inverter device |
JPH10127089A (en) * | 1996-10-02 | 1998-05-15 | Lucent Technol Inc | Method for reducing tone energy emitted from rotary machine |
JP2009060723A (en) * | 2007-08-31 | 2009-03-19 | Fuji Electric Systems Co Ltd | Control device for power conversion device and stationary auxiliary power supply device for vehicle |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5350422A (en) * | 1976-10-18 | 1978-05-08 | Mitsubishi Electric Corp | Ac motor drive system |
-
1985
- 1985-03-28 JP JP4544385U patent/JPS61162300U/ja active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5350422A (en) * | 1976-10-18 | 1978-05-08 | Mitsubishi Electric Corp | Ac motor drive system |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01303093A (en) * | 1988-05-30 | 1989-12-06 | Daikin Ind Ltd | Controller for pulse width modulation of inverter |
JPH02136072A (en) * | 1988-11-17 | 1990-05-24 | Mitsubishi Electric Corp | Pulse width modulation type inverter device |
JPH10127089A (en) * | 1996-10-02 | 1998-05-15 | Lucent Technol Inc | Method for reducing tone energy emitted from rotary machine |
JP2009060723A (en) * | 2007-08-31 | 2009-03-19 | Fuji Electric Systems Co Ltd | Control device for power conversion device and stationary auxiliary power supply device for vehicle |
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