JPS5499916A - Driver for ac motors - Google Patents
Driver for ac motorsInfo
- Publication number
- JPS5499916A JPS5499916A JP577078A JP577078A JPS5499916A JP S5499916 A JPS5499916 A JP S5499916A JP 577078 A JP577078 A JP 577078A JP 577078 A JP577078 A JP 577078A JP S5499916 A JPS5499916 A JP S5499916A
- Authority
- JP
- Japan
- Prior art keywords
- motors
- inductance
- reactor
- current
- started
- 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 Multiple Motors (AREA)
Abstract
PURPOSE: To reduce the low-frequency oscillation which takes place when a plurality of AC motors, which are operated in parallel with one another through a single inverter, are started separately, by setting the inductance-current characteristic of a DC reactor at a specific value.
CONSTITUTION: The plural motors M1∼Mn are energized by a power source 1 through the DC reactor 2, a filter circuit made of a capacitor 3, the three-phase AC output inverter 4 and a switch 6. The inductance of the DC reactor is made inversely proportional to the current so that the inductance is equal to Lo/N.Io whrer Lo represents the value of the inductance when only one motor is started and N.Io represents the average current when all the motors are driven. Therefore, the voltage dropped through the DC reactor 2 hardly vary despite the increase in the number of the load motors.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP577078A JPS5499916A (en) | 1978-01-24 | 1978-01-24 | Driver for ac motors |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP577078A JPS5499916A (en) | 1978-01-24 | 1978-01-24 | Driver for ac motors |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5499916A true JPS5499916A (en) | 1979-08-07 |
Family
ID=11620348
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP577078A Pending JPS5499916A (en) | 1978-01-24 | 1978-01-24 | Driver for ac motors |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5499916A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5254938A (en) * | 1975-10-31 | 1977-05-04 | Sony Corp | Switching regulator |
-
1978
- 1978-01-24 JP JP577078A patent/JPS5499916A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5254938A (en) * | 1975-10-31 | 1977-05-04 | Sony Corp | Switching regulator |
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