CN101261764A - Wireless driving system for power switch part - Google Patents
Wireless driving system for power switch part Download PDFInfo
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- CN101261764A CN101261764A CNA2008100365700A CN200810036570A CN101261764A CN 101261764 A CN101261764 A CN 101261764A CN A2008100365700 A CNA2008100365700 A CN A2008100365700A CN 200810036570 A CN200810036570 A CN 200810036570A CN 101261764 A CN101261764 A CN 101261764A
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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
The present invention relates to a kind of wireless drive system of electronic technology field, specifically is a kind of wireless drive system of device for power switching.
Background technology
Drive system is a lot, is suitable for the low-frequency driving of high-voltage large current place as relay; Solid-state relay SSR is suitable for the high-frequency driving of the little electric current of high voltage place, and integrated circuit is suitable for the high-frequency driving of the little electric current of low-voltage place.
Find through literature search prior art, " discussion of signal transmission in to the high-power IGBT driving circuit " that Yang Shuitao etc. deliver on " Power Electronic Technique " (rolling up the 117th page of the first phase in 2006 the 40th), propose to adopt the drive signal of optical fiber isolation method through-put power switching device in this article, specific implementation is: drive signal is through optical transmitting set, by electrical signal conversion is light signal, arrive optical receiver by Optical Fiber Transmission, optical receiver is converted to electric signal with light signal, through power amplification driving power switching device.Directly be not electrically connected owing to have between transmitter that optical fiber connects and the receiver, this scheme can realize the high pressure isolation drive.But high-voltage and high-power power electronic device triggering system has complicated huge circuit, and the complexity that costs an arm and a leg and connect up of optical fiber, therefore this scheme just seems expensive and huge, and especially in the place of laying optical fiber inconvenience, the use of this scheme just has certain limitation.Based on above actual conditions, select a kind of drive scheme, both can realize the reliable and stable of device for power switching driven fast, realize that simultaneously simply cost is lower, become the new pursuit direction that device for power switching drives the field.
Summary of the invention
The objective of the invention is at the deficiencies in the prior art, a kind of wireless drive system of device for power switching is provided, have advantages such as anti-interference effective, simple in structure, with low cost, highly versatile.
The present invention is achieved through the following technical solutions, the present invention includes: drive signal wireless transmission unit, drive signal radio receiving unit, power delivery unit, and the power delivery unit comprises power amplification circuit, wherein:
Drive signal wireless transmission unit carries out numerical coding to the drive signal of device for power switching, and adopts wireless mode to issue the drive signal radio receiving unit digitally encoded signal;
The drive signal radio receiving unit receives the digitally encoded signal of drive signal, is converted to digital signal, and digital signal obtains drive signal through decoding, and the power amplification circuit that drive signal is sent in the power delivery unit carries out power amplification;
The power delivery unit at first is transformed to dc power supply the AC power of high frequency, and by two-stage transformation isolation transmission, rectification obtains direct supply then, to the power amplification circuit power supply, the drive signal that the drive signal radio receiving unit sends over is carried out power amplification.
Described drive signal wireless transmission unit, comprise: digital encoder, radio-frequency (RF) transmitter, the input port of drive signal input digit scrambler, the delivery outlet of digital encoder links to each other with the input port of radio-frequency (RF) transmitter, digital encoder is encoded to the high-low level of drive signal, obtain the digitally encoded signal of drive signal, digitally encoded signal is sent in the radio-frequency (RF) transmitter, and radio-frequency (RF) transmitter sends digitally encoded signal with wireless signal;
Described drive signal radio receiving unit, comprise: radio frequency receiver, digital decoder, the input port of radio frequency receiver receives the digitally encoded signal of drive signal, the delivery outlet of radio frequency receiver links to each other with the input port of digital decoder, the delivery outlet of digital decoder links to each other with the signal input of power delivery unit, radio frequency receiver is converted to digital signal with the wireless signal that receives, digital signal is decoded through digital decoder, the output signal of digital decoder is exactly the drive signal of device for power switching, and this drive signal is sent into and carried out power amplification in the power amplification circuit;
Described power delivery unit, also comprise: two electrochemical capacitors, two power switchs, two power diodes, control and driver, two high-frequency transformers, a single-phase rectification bridge, left brachium pontis of two electrochemical capacitor formation in sequential series, two power switchs are corresponding in twos two contrary type switches of leading of reverse parallel connection formation with two power diodes, two contrary right brachium pontis of type switch formation in sequential series of leading, the upper end of left and right sides brachium pontis links to each other with dc power anode, the lower end links to each other with dc power cathode, the mid point of left and right sides brachium pontis links to each other with the primary coil of a high-frequency transformer, the secondary coil of high-frequency transformer links to each other with the primary coil of another high-frequency transformer, the secondary coil of another high-frequency transformer links to each other with two ac input ends of single-phase rectification bridge, the cathode output end of single-phase rectification bridge links to each other with the positive pole of power amplification circuit power supply, and the cathode output end of single-phase rectification bridge links to each other with the negative pole of power amplification circuit power supply.
When the present invention worked, the drive signal that microcontroller produces sent to drive signal wireless transmission unit, and drive signal wireless transmission unit carries out numerical coding to the high-low level of drive signal, and digitally encoded signal sends by radio-frequency (RF) transmitter; The radiofrequency signal that the drive signal radio receiving unit utilizes radio frequency receiver received RF transmitter to send, be converted to digital signal, digital signal obtains the drive signal of power device through digital decoder decodes, and drive signal is delivered to power and carried out power amplification in sending out circuit big.Power delivery unit by using half-bridge inversion circuit, dc power supply is transformed to the AC power of high frequency, isolates transmission, carry out rectification through single-phase rectification bridge then and obtain direct supply by the two-stage high-frequency transformer, to the power amplification circuit power supply, realize the power amplification of drive signal.
Compared with prior art, the present invention has following beneficial effect: owing to adopt radio-frequency (RF) transceiver to realize the wireless transmission of drive signal, can realize low-pressure side and on high-tension side reliable isolation, isolation voltage is higher than 4000V; Simplify wiring, reduce system cost; The anti-interference of raising system.The present invention can be used in the converters of 220V and above electric pressure, the DC Transmission that is particularly useful for 660V and above electric pressure with exchange transmission in power converter.
Description of drawings
Fig. 1 is an electrical block diagram of the present invention;
Fig. 2 is applied to embodiment electrical block diagram in the three-phase inverter system for the present invention.
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated: present embodiment is being to implement under the prerequisite with the technical solution of the present invention, provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
As shown in Figure 1, present embodiment comprises: drive signal wireless transmission unit 1, drive signal radio receiving unit 2 and power delivery unit 3, and power delivery unit 3 comprises power amplification circuit 31, wherein:
The drive signal of the 1 pair of device for power switching in drive signal wireless transmission unit is carried out numerical coding, and adopts wireless mode to issue drive signal radio receiving unit 2 digitally encoded signal;
Drive signal radio receiving unit 2 receives the digitally encoded signal of drive signal, is converted to digital signal, and digital signal obtains drive signal through decoding, and the power amplification circuit 31 that drive signal is sent in the power delivery unit 3 carries out power amplification;
Power delivery unit 3 at first is transformed to dc power supply the AC power of high frequency, and by two-stage transformation isolation transmission, rectification obtains direct supply then, gives power amplification circuit 31 power supplies, and the drive signal that the drive signal radio receiving unit sends over is carried out power amplification.
Described drive signal wireless transmission unit 1 comprises: digital encoder 10, a radio-frequency (RF) transmitter 11, and the input port of drive signal input digit scrambler 10, the delivery outlet of digital encoder 10 links to each other with the input port of radio-frequency (RF) transmitter 11.
Described drive signal radio receiving unit 2 comprises: radio frequency receiver 20, a digital decoder 21, the input port of radio frequency receiver 20 receives the digitally encoded signal of drive signal, the delivery outlet of radio frequency receiver 20 links to each other with the input port of digital decoder 21, and the delivery outlet of digital decoder 21 links to each other with the signal input of power delivery unit 3.
Described power delivery unit 3, also comprise: two electrochemical capacitor E1～E2, two power switch S1～S2, two power diode D1～D2, control and driver 30, two high-frequency transformer T1～T2, a single-phase rectification bridge B1, left brachium pontis of two electrochemical capacitor E1～E2 formation in sequential series, two power switch S1～S2 are corresponding in twos two contrary type switches of leading of reverse parallel connection formation with two power diode D1～D2, two contrary right brachium pontis of type switch formation in sequential series of leading, the upper end of left and right sides brachium pontis links to each other with dc power anode, and the lower end links to each other with dc power cathode.Control links to each other with the gate pole of two power switch S1～S2 respectively with the output of driver 30.The mid point of left and right sides brachium pontis links to each other with the primary coil of high-frequency transformer T1, the secondary coil of high-frequency transformer T1 links to each other with the secondary coil of another high-frequency transformer T2, the secondary coil of another high-frequency transformer T2 links to each other with two ac input ends of single-phase rectification bridge B1, the cathode output end of single-phase rectification bridge B1 links to each other with the positive pole of power amplification circuit 31 power supplies, and the cathode output end of single-phase rectification bridge B1 links to each other with the negative pole of power amplification circuit 31 power supplies.
The principle of work of present embodiment is:
In the drive signal wireless transmission unit 1, the high-low level of 10 pairs of drive signals of digital encoder is encoded, obtain the digitally encoded signal of drive signal, digitally encoded signal is sent in the radio-frequency (RF) transmitter 11, and radio-frequency (RF) transmitter 11 sends digitally encoded signal with wireless signal;
In the drive signal radio receiving unit 2, radio frequency receiver 20 is converted to digital signal with the wireless signal that receives, digital signal is decoded through digital decoder 21, the output signal of digital decoder 21 is exactly the drive signal of device for power switching, and this drive signal is sent into and carried out power amplification in the power amplification circuit 31;
In the power delivery unit 3, two electrochemical capacitor E1～E2, two power switch S1～S2 and two power diode D1～D2 form the semi-bridge type inverter, direct-current input power supplying is transformed to high frequency pulse power supply, high frequency pulse power supply is isolated transmission through two high-frequency transformer T1～T2, rectification obtains a direct supply through rectifier bridge then, working power as power amplification circuit 31, the output signal of 31 pairs of digital decoders 21 of power amplification circuit is carried out power amplification, and the drive signal that finally obtains having certain power is removed the driving power switching device.
Described digital encoder 10 is microcontrollers such as single-chip microcomputer or digital signal processor, also can be the coding circuit that adopts digit chip to build;
Working band 2.4～the 2.4835GHz of described radio-frequency (RF) transmitter 11;
Working band 2.4～the 2.4835GHz of described radio frequency receiver 20;
Described digital decoder 21 is microcontrollers such as single-chip microcomputer or digital signal processor, also can be the decoding circuit that adopts digit chip to build;
Described power switch S1～S2 can select general IGBT or MOSFET, the forward voltage blocking ability be 100V or more than, consistance is not done requirement; Power diode D1～D2 can select general power diode, the reverse voltage blocking ability be 100V or more than, consistance is not done requirement; Control can be selected general mimic channel or Digital Analog Hybrid Circuits with driver, does not do specific requirement; Electrochemical capacitor E1～E2 can select general electrochemical capacitor, and it is withstand voltage to be higher than direct supply voltage; The primary coil of the secondary coil of high-frequency transformer T1 and high-frequency transformer T2 can be formed its length 0～50m with a cable; Single-phase rectification bridge B1 is reverse fast recovery type rectifier bridge, reverse withstand voltage 100V or more than; Power amplification circuit DR1 is general power amplification circuit, does not do specific requirement.
Fig. 2 is the application of wireless drive system in the three-phase inverter system of the power switch of present embodiment.
Microcontroller DSP produces the drive signal of a device for power switching in the three-phase inverter, and this drive signal is sent into wireless drive system and carried out numerical coding, wireless transmission, digital decoding, power amplification, drives the device for power switching in the three-phase inverter at last.Because no any being electrically connected between microcontroller DSP and the device for power switching, and there are not expensive device such as laying optical fiber, therefore present embodiment in the three-phase inverter system for device for power switching provide a kind of simple and reliable, cost is low, applicability is strong, has the type of drive of good electrical isolation characteristic.
When present embodiment is used for the driving of multichannel device for power switching, only need to adopt a plurality of drive signal radio receiving units to receive different drive signals, adopt a plurality of high-frequency transformers, rectifier bridge and power amplification circuit that power is carried out multichannel isolation transmission and get final product.
Claims (10)
1, a kind of wireless drive system of power switch is characterized in that, comprising: drive signal wireless transmission unit, drive signal radio receiving unit, power delivery unit, and the power delivery unit comprises power amplification circuit, wherein:
Drive signal wireless transmission unit carries out numerical coding to the drive signal of device for power switching, and adopts wireless mode to issue the drive signal radio receiving unit digitally encoded signal;
The drive signal radio receiving unit receives the digitally encoded signal of drive signal, is converted to digital signal, and digital signal obtains drive signal through decoding, and the power amplification circuit that drive signal is sent in the power delivery unit carries out power amplification;
The power delivery unit at first is transformed to dc power supply the AC power of high frequency, and by two-stage transformation isolation transmission, rectification obtains direct supply then, to the power amplification circuit power supply, the drive signal that the drive signal radio receiving unit sends over is carried out power amplification.
2, the wireless drive system of device for power switching according to claim 1, it is characterized in that, described drive signal wireless transmission unit, comprise: digital encoder, radio-frequency (RF) transmitter, the input port of drive signal input digit scrambler, the delivery outlet of digital encoder links to each other with the input port of radio-frequency (RF) transmitter, digital encoder is encoded to the high-low level of drive signal, obtain the digitally encoded signal of drive signal, digitally encoded signal is sent in the radio-frequency (RF) transmitter, and radio-frequency (RF) transmitter sends digitally encoded signal with wireless signal.
3, the wireless drive system of device for power switching according to claim 2 is characterized in that, described digital encoder is the coding circuit that single-chip microcomputer or digital signal processor or digit chip are built.
4, the wireless drive system of device for power switching according to claim 2 is characterized in that, the working band 2.4～2.4835GHz of described radio-frequency (RF) transmitter.
5, the wireless drive system of device for power switching according to claim 1, it is characterized in that, described drive signal radio receiving unit, comprise: radio frequency receiver, digital decoder, the input port of radio frequency receiver receives the digitally encoded signal of drive signal, the delivery outlet of radio frequency receiver links to each other with the input port of digital decoder, the delivery outlet of digital decoder links to each other with the signal input of power delivery unit, radio frequency receiver is converted to digital signal with the wireless signal that receives, digital signal is decoded through digital decoder, the output signal of digital decoder is exactly the drive signal of device for power switching, and this drive signal is sent into and carried out power amplification in the power amplification circuit.
6, the wireless drive system of device for power switching according to claim 5 is characterized in that, described digital decoder is single-chip microcomputer or digital signal processor or the decoding circuit that adopts digit chip to build.
7, the wireless drive system of device for power switching according to claim 5 is characterized in that, the working band 2.4～2.4835GHz of described radio frequency receiver.
8, the wireless drive system of device for power switching according to claim 1, it is characterized in that, described power delivery unit, comprise: two electrochemical capacitors, two power switchs, two power diodes, control and driver, two high-frequency transformers, a single-phase rectification bridge, left brachium pontis of two electrochemical capacitor formation in sequential series, two power switchs are corresponding in twos two contrary type switches of leading of reverse parallel connection formation with two power diodes, two contrary right brachium pontis of type switch formation in sequential series of leading, the upper end of left and right sides brachium pontis links to each other with dc power anode, the lower end links to each other with dc power cathode, the mid point of left and right sides brachium pontis links to each other with the primary coil of a high-frequency transformer, the secondary coil of high-frequency transformer links to each other with the primary coil of another high-frequency transformer, the secondary coil of another high-frequency transformer links to each other with two ac input ends of single-phase rectification bridge, the cathode output end of single-phase rectification bridge links to each other with the positive pole of power amplification circuit power supply, and the cathode output end of single-phase rectification bridge links to each other with the negative pole of power amplification circuit power supply.
9, the wireless drive system of device for power switching according to claim 8 is characterized in that, described power switch forward voltage blocking ability be 100V or more than.
10, the wireless drive system of device for power switching according to claim 8 is characterized in that, described power diode reverse voltage blocking ability be 100V or more than.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100365700A CN101261764A (en) | 2008-04-24 | 2008-04-24 | Wireless driving system for power switch part |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2008100365700A CN101261764A (en) | 2008-04-24 | 2008-04-24 | Wireless driving system for power switch part |
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| CN101261764A true CN101261764A (en) | 2008-09-10 |
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| CNA2008100365700A Pending CN101261764A (en) | 2008-04-24 | 2008-04-24 | Wireless driving system for power switch part |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101917793A (en) * | 2010-06-02 | 2010-12-15 | 杭州奥能照明电器有限公司 | Wireless driving system of light-emitting diode |
| CN103336467A (en) * | 2013-06-09 | 2013-10-02 | 辽宁省电力有限公司大连供电公司 | Intelligent low-voltage direct current air switch |
| CN103512549A (en) * | 2013-09-27 | 2014-01-15 | 杭州果果松信息科技有限公司 | High-rise building oscillating automatic monitoring system based on measurement robot |
| CN105227177A (en) * | 2014-06-30 | 2016-01-06 | 硅谷实验室公司 | Comprise the isolator of two-way adjuster |
| CN109121455A (en) * | 2016-04-06 | 2019-01-01 | 株式会社日立制作所 | Wirelessly send by electric system, have the power inverter and power transferring method of the system |
| WO2021138819A1 (en) * | 2020-01-07 | 2021-07-15 | Oppo广东移动通信有限公司 | Control circuit and control method for switch transistor |
| CN113708451A (en) * | 2021-08-27 | 2021-11-26 | 浪潮商用机器有限公司 | Super capacitor charging circuit |
| EP4084314A4 (en) * | 2020-01-07 | 2022-12-28 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Adapter and control method |
-
2008
- 2008-04-24 CN CNA2008100365700A patent/CN101261764A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101917793A (en) * | 2010-06-02 | 2010-12-15 | 杭州奥能照明电器有限公司 | Wireless driving system of light-emitting diode |
| CN101917793B (en) * | 2010-06-02 | 2013-11-06 | 杭州奥能照明电器有限公司 | Wireless driving system of light-emitting diode |
| CN103336467A (en) * | 2013-06-09 | 2013-10-02 | 辽宁省电力有限公司大连供电公司 | Intelligent low-voltage direct current air switch |
| CN103512549A (en) * | 2013-09-27 | 2014-01-15 | 杭州果果松信息科技有限公司 | High-rise building oscillating automatic monitoring system based on measurement robot |
| CN105227177A (en) * | 2014-06-30 | 2016-01-06 | 硅谷实验室公司 | Comprise the isolator of two-way adjuster |
| CN109121455A (en) * | 2016-04-06 | 2019-01-01 | 株式会社日立制作所 | Wirelessly send by electric system, have the power inverter and power transferring method of the system |
| US11018528B2 (en) | 2016-04-06 | 2021-05-25 | Hitachi, Ltd. | Wireless power transmission/reception system, power conversion device including the same, and power conversion method |
| WO2021138819A1 (en) * | 2020-01-07 | 2021-07-15 | Oppo广东移动通信有限公司 | Control circuit and control method for switch transistor |
| CN114787885A (en) * | 2020-01-07 | 2022-07-22 | Oppo广东移动通信有限公司 | Control circuit and control method of switching tube |
| EP4084314A4 (en) * | 2020-01-07 | 2022-12-28 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Adapter and control method |
| EP4075404A4 (en) * | 2020-01-07 | 2022-12-28 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Control circuit and control method for switch transistor |
| CN113708451A (en) * | 2021-08-27 | 2021-11-26 | 浪潮商用机器有限公司 | Super capacitor charging circuit |
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