JPS5566288A - Inverter control circuit - Google Patents
Inverter control circuitInfo
- Publication number
- JPS5566288A JPS5566288A JP13825278A JP13825278A JPS5566288A JP S5566288 A JPS5566288 A JP S5566288A JP 13825278 A JP13825278 A JP 13825278A JP 13825278 A JP13825278 A JP 13825278A JP S5566288 A JPS5566288 A JP S5566288A
- Authority
- JP
- Japan
- Prior art keywords
- wave
- frequency
- counter
- carrier
- control circuit
- 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)
Abstract
PURPOSE: To keep current wave forms of individual phases of loads equal by generating a reference wave whose frequency is 6 times the fundamental frequency and a carrier wave whose frequency is 6n times and comparing both waves to obtain gate signals.
CONSTITUTION: A signal, whose frequency is 6.m.n1 times the inverter fundamental frequency f, is input to a control circuit, and is divided into a 1/n1 by a frequency divider 101. The result is input to a counter 104 through a selection circuit 103, obtaining a sawtooth wave with a hight m which becomes a carrier C. While, a sawtooth wave time with a hight m and a frequency 6f if obtained through a counter 105, and is designated as a reference wave R. C and R are compared in a comparator 106, and the result is synthesized with a signal from a 6-steps ring counter 107 in a wave synthesizer 108, thus gate signals G1∼G6 are obtained. In this constitution, the carrier wave and the reference wave can be crossed at the center of the conduction angle of 60°, and the current wave forms of individual phases can be kept equal even after the PWM operation have been performed.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53138252A JPS6024670B2 (en) | 1978-11-09 | 1978-11-09 | Inverter control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53138252A JPS6024670B2 (en) | 1978-11-09 | 1978-11-09 | Inverter control circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5566288A true JPS5566288A (en) | 1980-05-19 |
| JPS6024670B2 JPS6024670B2 (en) | 1985-06-14 |
Family
ID=15217605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP53138252A Expired JPS6024670B2 (en) | 1978-11-09 | 1978-11-09 | Inverter control circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6024670B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6074973A (en) * | 1983-09-28 | 1985-04-27 | Mitsubishi Electric Corp | Reference signal forming circuit of synchronous pwm inverter |
| JPS6074972A (en) * | 1983-09-28 | 1985-04-27 | Mitsubishi Electric Corp | Reference signal forming circuit of synchronous pwm inverter |
| CN101895222A (en) * | 2010-06-02 | 2010-11-24 | 黑龙江科技学院 | Multi-carrier wave TPWM modulation method based on reverse-phase cross |
-
1978
- 1978-11-09 JP JP53138252A patent/JPS6024670B2/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6074973A (en) * | 1983-09-28 | 1985-04-27 | Mitsubishi Electric Corp | Reference signal forming circuit of synchronous pwm inverter |
| JPS6074972A (en) * | 1983-09-28 | 1985-04-27 | Mitsubishi Electric Corp | Reference signal forming circuit of synchronous pwm inverter |
| CN101895222A (en) * | 2010-06-02 | 2010-11-24 | 黑龙江科技学院 | Multi-carrier wave TPWM modulation method based on reverse-phase cross |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6024670B2 (en) | 1985-06-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS57112137A (en) | Frequency synthesizer | |
| JPS5566288A (en) | Inverter control circuit | |
| ES426500A1 (en) | Frequency synthesizer having phase-locked loop including sample and hold circuit frequency converter | |
| JPS5212549A (en) | Frequency synthesizer | |
| JPS5575343A (en) | Phase comparator circuit | |
| JPS5333038A (en) | Phase synchronizing oscillator | |
| JPS5234663A (en) | Frequency divider | |
| JPS524016A (en) | Control system for the pulse width control inverter | |
| JPS5573141A (en) | Pll frequency synthesizer | |
| JPS5213757A (en) | Sine wave signal generator circuit | |
| JPS558214A (en) | Inverter control circuit | |
| JPS5586217A (en) | Pll phase comparator | |
| JPS5360674A (en) | Converter for power-factor and dc signal | |
| JPS5341122A (en) | Generator for video special effect signal | |
| JPS54136110A (en) | Phase synchronous type low frequency mixer circuit | |
| JPS5396613A (en) | Automatic controller for local oscillation frequency | |
| JPS548830A (en) | Inverter | |
| JPS531813A (en) | Control system of ac motor | |
| JPS5320847A (en) | Automatic pulse phase shifter | |
| JPS5661833A (en) | Phase synchronous oscillating circuit | |
| JPS54105735A (en) | Gate controller for inverter | |
| JPS52144221A (en) | Ghost delection circuit system | |
| JPS5579682A (en) | Controller for pulse width modulation inverter | |
| JPS5726904A (en) | Signal generator | |
| JPS56110405A (en) | Controlling method of phase difference for inverter |