JPS5489215A - Current type self-commutated inverter device - Google Patents
Current type self-commutated inverter deviceInfo
- Publication number
- JPS5489215A JPS5489215A JP15993677A JP15993677A JPS5489215A JP S5489215 A JPS5489215 A JP S5489215A JP 15993677 A JP15993677 A JP 15993677A JP 15993677 A JP15993677 A JP 15993677A JP S5489215 A JPS5489215 A JP S5489215A
- Authority
- JP
- Japan
- Prior art keywords
- reference value
- current reference
- timer
- predetermined time
- commutation
- 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
Abstract
PURPOSE: To prevent commutation failure, by adding a first order time lag circuit for raising the current reference value with a predetermined time constant and a timer device for increasing the frequency reference value during said raising.
CONSTITUTION: When an AC motor is started by a self-commutated inverter, a first order time lag circuit 61 is added to the command-timer 46 lowering the current reference for a predetermined time interval from the starting, so as to raise the current reference, which is to be lowered, with a predetermined time constant, and further, a timer 62 is added to the frequency reference setter 51 for increasing the frequency reference value from that at the starting time while the current reference value is raised. Thus, commutation period is reduced to decrease the ratio of the main circuit current produced during the preceding commutation so that the time interval in which a reverse voltage is applied on the thyristor can be made longer and hence commutation failure can be prevented.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15993677A JPS5489215A (en) | 1977-12-27 | 1977-12-27 | Current type self-commutated inverter device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15993677A JPS5489215A (en) | 1977-12-27 | 1977-12-27 | Current type self-commutated inverter device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5489215A true JPS5489215A (en) | 1979-07-16 |
Family
ID=15704381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15993677A Pending JPS5489215A (en) | 1977-12-27 | 1977-12-27 | Current type self-commutated inverter device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5489215A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100300179A1 (en) * | 2009-05-29 | 2010-12-02 | Denso Corporation | Exhaust gas sensor diagnostic device |
-
1977
- 1977-12-27 JP JP15993677A patent/JPS5489215A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100300179A1 (en) * | 2009-05-29 | 2010-12-02 | Denso Corporation | Exhaust gas sensor diagnostic device |
| US8489361B2 (en) * | 2009-05-29 | 2013-07-16 | Denso Corporation | Exhaust gas sensor diagnostic device |
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