JPS54121925A - Inverter - Google Patents
InverterInfo
- Publication number
- JPS54121925A JPS54121925A JP2945778A JP2945778A JPS54121925A JP S54121925 A JPS54121925 A JP S54121925A JP 2945778 A JP2945778 A JP 2945778A JP 2945778 A JP2945778 A JP 2945778A JP S54121925 A JPS54121925 A JP S54121925A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- capacitor circuit
- capacitor
- commutation
- thyristor bridge
- 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.)
- Granted
Links
Landscapes
- Inverter Devices (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
PURPOSE: To improve the torque characteristics of a load motor by improving current application ratio through th on-off operation of a capacitor circuit and the change of commutation off time.
CONSTITUTION: A capacitor circuit connected through a switch is provided between a thyristor bridge circuit, inverse bias circuit, chopper switching element, and the output terminal of the thyristor bridge circuit. The on-off operation of a capacitor circuit consisting of the capacitors 14a to 14c and the change of the commutation off time of the chopper switching elements 8 and 9 are automatically performed in accordance with the current command for controlling the thyristor bridge circuit. This prevents the deterioration of torque characteristics due to the degradation of current application ratio in the high speed region which is the defect of a lumped commutation type inverter. Since the capacitor circuit is automatically separated in the low speed region, the capacitor loss generated by the resonance current which is applied to both the motor winding and the capacitor circuit can be eliminated.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53029457A JPS5953790B2 (en) | 1978-03-15 | 1978-03-15 | Inverter device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53029457A JPS5953790B2 (en) | 1978-03-15 | 1978-03-15 | Inverter device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54121925A true JPS54121925A (en) | 1979-09-21 |
JPS5953790B2 JPS5953790B2 (en) | 1984-12-26 |
Family
ID=12276626
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP53029457A Expired JPS5953790B2 (en) | 1978-03-15 | 1978-03-15 | Inverter device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5953790B2 (en) |
-
1978
- 1978-03-15 JP JP53029457A patent/JPS5953790B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS5953790B2 (en) | 1984-12-26 |
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