Method, based on composite modulation, of data transmission between power electronic devices without communication line
US9755696B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 15, 2014 |
| Grant date | Sep 5, 2017 |
| Priority date | — |
| Expiry date | Jul 15, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/12
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method of data transmission between power electronic devices without a communication line involves generation of a digital signal in a data transmission process. The digital signal enables PWM modulation of specific data information via a composite modulation method. The composite modulation superimposes PWM modulation waves after modulating the PWM carrier frequency or conducting high-frequency modulation on the data. The composite modulation generates a PWM drive pulse signal which is transmitted to a power circuit via a main power electronic circuit to complete the data transmission process. In the data receiving process, signals are extracted on the voltage and current of a power line via software or hardware, and data demodulated to obtain the data information to complete the data receiving process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.