JPS5568803A - Reducing method of higher harmonic component of source current - Google Patents
Reducing method of higher harmonic component of source currentInfo
- Publication number
- JPS5568803A JPS5568803A JP14104378A JP14104378A JPS5568803A JP S5568803 A JPS5568803 A JP S5568803A JP 14104378 A JP14104378 A JP 14104378A JP 14104378 A JP14104378 A JP 14104378A JP S5568803 A JPS5568803 A JP S5568803A
- Authority
- JP
- Japan
- Prior art keywords
- speed
- linear motor
- power
- less
- output
- 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
Landscapes
- Control Of Vehicles With Linear Motors And Vehicles That Are Magnetically Levitated (AREA)
- Control Of Linear Motors (AREA)
- Power Conversion In General (AREA)
Abstract
PURPOSE: To reduce the equivalent negative phase current and to use the filter econimically by connecting a higher degree low-pass filter to the source side of the power converter only in certain range of the speed command for linear motor.
CONSTITUTION: Power from the three-phase AC generator 1 is fed to the linear motor 4 through the power transformers 21W23 and respective phase power converters CCUWCCW. When the reference voltage corresponding to the speed V1 and the one corresponding to the speed v2 are set to VP1 and Vp2 respectively, the reference voltage Vp1 becomes higher than the output voltage Vn when the speed of linear motor is v1 or less, the subtracter 11 emits an output signal to operate the OR circuit 8. Thus the switching means 7 is closed by an output of the command circuit 9, and the filters 61W63 are connected to the output side of the AC generator 1. By this, higher harmonic current in operating the power converters CCUWCCW when the speed of linear motor is v1 or less can be reduced, the equivalent negative phase current Lpeg' can be made a permissible value or less.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14104378A JPS5568803A (en) | 1978-11-17 | 1978-11-17 | Reducing method of higher harmonic component of source current |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14104378A JPS5568803A (en) | 1978-11-17 | 1978-11-17 | Reducing method of higher harmonic component of source current |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5568803A true JPS5568803A (en) | 1980-05-23 |
Family
ID=15282908
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14104378A Pending JPS5568803A (en) | 1978-11-17 | 1978-11-17 | Reducing method of higher harmonic component of source current |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5568803A (en) |
-
1978
- 1978-11-17 JP JP14104378A patent/JPS5568803A/en active Pending
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