Wireless driving system for power switch part

A technology of power switching devices and drive systems, applied in the direction of output power conversion devices, signal transmission systems, control/regulation systems, etc., can solve the problems of expensive, expensive and bulky optical fibers, simplify circuit wiring, and improve anti-interference performance and reduce system cost

Inactive Publication Date: 2008-09-10
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the trigger system of high-voltage and high-power power electronic devices has complex and huge circuits, and the price of optical fibers is expensive and the wiring is complicated, so this solution is expensive and bulky, especially in places where it is inconvenient to lay out optical fibers. certain limitations

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  • Wireless driving system for power switch part
  • Wireless driving system for power switch part

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Embodiment Construction

[0016] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings: this embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following the described embodiment.

[0017] Such as figure 1 As shown, this embodiment includes: a driving signal wireless sending unit 1, a driving signal wireless receiving unit 2 and a power transmission unit 3, and the power transmission unit 3 includes a power amplification circuit 31, wherein:

[0018] The driving signal wireless sending unit 1 digitally encodes the driving signal of the power switching device, and sends the digitally coded signal to the driving signal wireless receiving unit 2 in a wireless manner;

[0019] The drive signal wireless receiving unit 2 receives the digital coded sig...

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Abstract

The invention relates to a wireless drive system of a power switching device in the field of electric power and electronic technology. A driving signal wireless transmitting unit of the invention digitally encodes the driving signals of the power switching device and sends the digitally coded signals to a driving signal wireless receiving unit in a wireless form; the driving signal wireless receiving unit receives the digitally coded signals of the driving signals and converts the digitally coded signals to digital signals which are decoded to obtain driving signals and then the driving signals are sent to a power amplifying circuit in the power transmission unit for power amplifying; the power transmission unit first converts a direct current power supply to a high frequency alternating current power supply and transmits the power supply through isolation of two stages of transformation, then the direct current power supply is obtained through rectification to supply power to the power amplifying circuit, and the driving signals sent from the driving signal wireless receiving unit are power amplified. The wireless drive system can realize reliable driving of power switching device, reliable isolation of low voltage side and high voltage side, and reduce the number of the direct current power supply.

Description

technical field [0001] The invention relates to a wireless drive system in the field of electronic technology, in particular to a wireless drive system for power switching devices. Background technique [0002] There are many driving systems, such as relays are suitable for high voltage, high current and low frequency driving places; solid state relays SSR are suitable for high voltage, low current and high frequency driving places, and integrated circuits are suitable for low voltage, low current and high frequency driving places. [0003] After searching the literature of the prior art, it was found that "Discussion on Signal Transmission in High-power IGBT Drive Circuit" published by Yang Shuitao et al. in "Power Electronics Technology" (2006, Vol. It is proposed to use optical fiber isolation to transmit the driving signal of the power switching device. The specific implementation is: the driving signal passes through the optical transmitter, converts the electrical sign...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08C17/02H02M3/28H02M3/335
Inventor 姜建国杨兴华许海燕乔树通
Owner SHANGHAI JIAO TONG UNIV
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