JPS5671493A - Frequency converter - Google Patents
Frequency converterInfo
- Publication number
- JPS5671493A JPS5671493A JP14655179A JP14655179A JPS5671493A JP S5671493 A JPS5671493 A JP S5671493A JP 14655179 A JP14655179 A JP 14655179A JP 14655179 A JP14655179 A JP 14655179A JP S5671493 A JPS5671493 A JP S5671493A
- Authority
- JP
- Japan
- Prior art keywords
- notch
- slip frequency
- command
- frequency
- response
- 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
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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
PURPOSE:To retain notch characteristic even in constant power operation characteristic region by limiting the slip frequency command to predetermined level value in response to the notch command. CONSTITUTION:A slip frequency limiting circuit 23 for limiting the slip frequency command to predetermined level value in response to the output of a notch command circuit 22 is provided at a device for controlling the output voltage and the frequency of the inverter 15 through a control circuit 14 in accordance with the outputs from voltage control amplifier 8 and adder 13, the voltage of the motor is maintained at constant level, the slip frequency is raised approximately proportionally to the primary frequency of the motor, and the slip frequency is limited to a predetermined level in response to the output of the notch command circuit for instructing the notch characteristic at the time of controlling the motor. Thus, the notch characteristic corresponding to the weak field characteristics of the conventional resistance controlled vehicle can be incorporated even in the constant power operation characteristic region.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14655179A JPS5671493A (en) | 1979-11-14 | 1979-11-14 | Frequency converter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14655179A JPS5671493A (en) | 1979-11-14 | 1979-11-14 | Frequency converter |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5671493A true JPS5671493A (en) | 1981-06-15 |
Family
ID=15410212
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14655179A Pending JPS5671493A (en) | 1979-11-14 | 1979-11-14 | Frequency converter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5671493A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6039388A (en) * | 1983-08-10 | 1985-03-01 | Mitsubishi Electric Corp | Slip frequency control type inverter device |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5166432A (en) * | 1974-12-05 | 1976-06-09 | Tokyo Shibaura Electric Co | Judodendokino sokudoseigyohoshiki |
-
1979
- 1979-11-14 JP JP14655179A patent/JPS5671493A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5166432A (en) * | 1974-12-05 | 1976-06-09 | Tokyo Shibaura Electric Co | Judodendokino sokudoseigyohoshiki |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6039388A (en) * | 1983-08-10 | 1985-03-01 | Mitsubishi Electric Corp | Slip frequency control type inverter device |
JPH0328915B2 (en) * | 1983-08-10 | 1991-04-22 | Mitsubishi Electric Corp |
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