CN102122142B - Switching value control method for high-voltage frequency converter and control plug-in thereof - Google Patents
Switching value control method for high-voltage frequency converter and control plug-in thereof Download PDFInfo
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- CN102122142B CN102122142B CN 201110005708 CN201110005708A CN102122142B CN 102122142 B CN102122142 B CN 102122142B CN 201110005708 CN201110005708 CN 201110005708 CN 201110005708 A CN201110005708 A CN 201110005708A CN 102122142 B CN102122142 B CN 102122142B
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Abstract
The invention relates to a switching value control method for a high-voltage frequency converter and a controller thereof; a switching value input measurement circuit of the high-voltage frequency converter is arranged at the input end of the high-voltage frequency converter to collect an input switch value signal of the high-voltage frequency converter, and the input switch value signal of the high-voltage frequency converter is accessed to a logical controller through signal amplitude decreasing, rectifying, filtering and isolating treatment; and the logic controller emits a control instruction after operation processing to control switch-on and switch-off of an external signal after being processed through the switching value input measurement circuit about potential conversion, isolating, filtering and relay isolation. In the switching value control method for the high-voltage frequency converter, an output switching value self-checking part is arranged; the output switching valueself-checking part performs amplitude decreasing and isolation to the output control switching value signal to feed in a logic processor to output the switching value state to feedback the output state to the logic processor through a feedback circuit, so as to realize switching value self-checking; moreover, the logic processor is communicated with a master controller of the high-voltage frequency converter through an optical fiber.
Description
Technical field
The present invention relates to a kind of control method and structure of electric component; a kind of switching value control method and control plug-in unit of high voltage converter specifically; relate to that a kind of high voltage converter starts, shuts down, resets, anxious measurement and control technology of the various passes key switch signal in the frequency converter such as stopping, belong to the observation and control technology field.Be mainly used in the high voltage converter.
Background technology
At present, the whole world perplexs for energy scarcity, and the Energy situation of China is especially severe.Along with the fast development of China's economic, the energy becomes the bottleneck of restriction economic growth, and saving consumption reduction also just becomes the problem of country and enterprise's serious concerns.High voltage converter with ideal energy saving effect and speed adjusting performance causes showing great attention to of responsible departments of the government and each high energy-consuming enterprises, and frequency conversion becomes first-selected energy-conserving product.
When high voltage converter moves, have a lot of switching value signal demands to measure and control, as high voltage converter start, shut down, reset, various passes key switch signal in the frequency converter such as urgency is stopped, the control of these switching value signals must be accurate.Because high voltage converter self and environment for use characteristics increase difficulty on stream.Such as: strong noise, dust is many, drives large motor, moves under hyperbaric environment, and high-voltage signal can produce electromagnetic interference, and the potential defective of system also very likely causes larger interference, therefore needs further to be improved.Still find no relevant bibliographical information through retrieval.
Summary of the invention
Purpose of the present invention exactly in order to overcome the indifferent deficiency of strong jamming of the existing anti-environment for use of high voltage converter, provides a kind of for anti-environmental interference ability better high voltage converter switching value control method and control plug-in unit.
The technical solution adopted for the present invention to solve the technical problems is: a kind of high voltage converter switching value control method, at the high voltage converter input high voltage converter switching value input measurement circuit is set, gather high voltage converter input switch amount signal, and high voltage converter input switch amount signal is accessed logic controller after by the signal range of decrease-rectification-filtering-isolation processing; Logic controller sends control command through after the calculation process, through after level conversion-isolation-filtering-relay isolation processing, controls turning on and off of external signal by the switching value output control circuit.In high voltage converter switching value control method, be provided with output switch amount self check part; The self check of output switch amount partly is after the switching value signal that output is controlled is passed through the range of decrease, isolation, to send into logic processor, and output switch amount state feeds back to logic processor by feedback circuit with output state, has realized the switching value self check.
Described high voltage converter switching value input measurement circuit refers to the measuring unit of high voltage converter input switch amount, input switch amount voltage signal is after the range of decrease, enter rectifier bridge, the signal after the rectification is sent into logic processor and is carried out logical process after carrying out filtering, isolation.In the measuring unit of high voltage converter input switch amount, range of decrease circuit is connected on before the rectifier bridge, has protected rectifier bridge and subsequent conditioning circuit.If range of decrease circuit is connected on after the rectifier bridge, rectifier bridge easily burns out, and causes circuit board and measurement mechanism fault; And during the access of switching value input signal, carried out protection circuit against input over-voltage at the rectifier bridge input, be provided with piezo-resistance, both protected rectifier bridge, protected again subsequent conditioning circuit.
The switching value input signal is after rectification, and high order harmonic component and interference signal during by the filtering switching value action of having processed filtering are by isolation processing isolated high-voltage and interference.
Described switching value output control circuit refers to high voltage converter switching value output control unit, send control signal by logic processor, after the isolation through output after the relay isolation, signal after the isolation is controlled the switch of relay, thereby the connection of control output signal and closing, dual resisteance has improved the accuracy of output switch amount control.
The self check of described output switch amount self check part is to realize by the feedback circuit of on-off state, output switch amount state feeds back to logic processor through the range of decrease, filtering, the isolation of output signal, the state of logic processor switch amount is judged, has realized the self check of switching value output signal.
The switching value control plug-in unit of the high voltage converter that proposes according to said method is: a kind of switching value control circuit board of high voltage converter comprises high voltage converter input switch amount collecting unit, output switch amount control unit and output switch amount signal self-test unit.Wherein, switching value input measurement circuit comprises signal range of decrease part, rectifying part, filtering part and isolated part, and signal accesses logic controller after switching value input measurement circuit is through the signal range of decrease-rectification-filtering-isolation processing; Switching value output control circuit also andlogic control device joins; The switching value output control circuit sends control command by logic controller, after processing through " level conversion-isolation-filtering-relay isolation ", controls turning on and off of external signal.In high voltage converter switching value control method, be provided with output switch amount self check part; The self check of output switch amount partly is after the switching value signal that output is controlled is passed through the range of decrease, isolation, to send into logic processor, and output switch amount state feeds back to logic processor by feedback circuit with output state, has realized the switching value self check; In addition, logic processor is by optical fiber and the communication of high voltage converter master controller.
Described logic processor can adopt a kind of in programmable gate array chip, complex programmable device chip, microcontroller chip and the digital signal processing chip, the state of switching value is sent into logic processor carry out logical operation.
The invention has the advantages that:
The first, input switch amount circuit of the present invention has carried out overvoltage protection, isolation and twice filtering, has improved the antijamming capability of circuit; In the situation that high temperature, higher harmonics, strong noise still can effectively move, improved the antijamming capability of high voltage converter.
The second, output switch amount control signal of the present invention has been carried out twice isolation, has both isolated the high pressure interference, prevents again the misoperation of output switch amount, has high reliability.
The 3rd, output switch amount signal of the present invention has been realized self check.
The 4th, whether normal the corresponding indicator light of each I/O channel of the present invention can observe input and output easily.
The 5th, the present invention has adopted the optical fiber processing circuit, transfers the signal of telecommunication to light signal on the spot and transmits, and has overcome the many disadvantages of electric signal transmission.
Description of drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is switching value input circuit structure chart of the present invention.
Fig. 3 is switching value input circuit figure of the present invention.
Fig. 4 is switching value output circuit structure chart of the present invention.
Fig. 5 is switching value output circuit figure of the present invention.
Embodiment
The present invention is further described below in conjunction with drawings and Examples.
As shown in Figure 1, a kind of high voltage converter switching value control method, at the high voltage converter input high voltage converter switching value input measurement circuit 1 is set, gather high voltage converter input switch amount signal, and high voltage converter input switch amount signal is passed through to access logic controller 2 after the signal range of decrease-rectification-filtering-isolation processing; Logic controller 2 sends control command through after the calculation process, through after level conversion-isolation-filtering-relay isolation processing, controls turning on and off of external signal by the switching value output control circuit.In high voltage converter switching value control method, be provided with output switch amount self check part; The self check of output switch amount partly is after the switching value signal that output is controlled is passed through the range of decrease, isolation, to send into logic processor 3, and output switch amount state feeds back to logic processor 3 by feedback circuit with output state, has realized the switching value self check; In addition, logic processor is by optical fiber 4 and 5 communications of high voltage converter master controller.
As shown in Figure 2, described high voltage converter switching value input measurement circuit refers to the measuring unit of high voltage converter input switch amount, input switch amount voltage signal is after the range of decrease, enter rectifier bridge, signal after the rectification is sent into logic processor FPGA and is carried out logical process after carrying out filtering, isolation.As shown in Figure 3, in the measuring unit of high voltage converter input switch amount, range of decrease circuit is connected on before the rectifier bridge, has protected rectifier bridge and subsequent conditioning circuit.If range of decrease circuit is connected on after the rectifier bridge, rectifier bridge easily burns out, and causes circuit board and measurement mechanism fault; And during the access of switching value input signal, carried out protection circuit against input over-voltage at the rectifier bridge input, be provided with piezo-resistance, both protected rectifier bridge, protected again subsequent conditioning circuit.
The switching value input signal is after rectification, and high order harmonic component and interference signal during by the filtering switching value action of having processed filtering are by isolation processing isolated high-voltage and interference.
The switching value control plug-in unit of the high voltage converter that proposes according to said method is: a kind of switching value control circuit board of high voltage converter comprises high voltage converter input switch amount collecting unit, output switch amount control unit and output switch amount signal self-test unit.Wherein, switching value input measurement circuit comprises signal range of decrease part, rectifying part, filtering part and isolated part, and signal accesses logic controller after switching value input measurement circuit is through the signal range of decrease-rectification-filtering-isolation processing; Switching value output control circuit also andlogic control device joins; The switching value output control circuit sends control command by logic controller, after processing through " level conversion-isolation-filtering-relay isolation ", controls turn on and off (as shown in Figure 4) of external signal.In high voltage converter switching value control method, be provided with output switch amount self check part; The self check of output switch amount partly is after the switching value signal that output is controlled is passed through the range of decrease, isolation, to send into logic processor, and output switch amount state feeds back to logic processor by feedback circuit with output state, has realized the switching value self check; In addition, logic processor is by optical fiber and the communication of high voltage converter master controller.
Described logic processor can adopt a kind of in programmable gate array chip, complex programmable device chip, microcontroller chip and the digital signal processing chip, the state of switching value is sent into logic processor carry out logical operation.
And at input switch amount state, the corresponding display lamp of each passage of switching value input, when the channel signal amplitude arrived preset value, display lamp was bright, can real-time monitored by the indicator light on the controller.
And at output switch amount state, the corresponding display lamp of each passage of switching value output, when output relay was closed, display lamp was bright, can real-time monitored by the indicator light on the controller.
The state information of input/output switching amount is all carried out logical process by logic processor, and logic processor carries out communication by optical fiber and master control borad, and optical-fibre communications transfers the signal of telecommunication to light signal nearby, can isolated high-voltage, have good anti-electromagnetic interference performance.
Described logic processor is the logic processor that programmable gate array chip forms.
As shown in Figure 5, described switching value output control circuit refers to high voltage converter switching value output control unit, send control signal by logic processor, after the isolation through output after the relay isolation, signal after the isolation is controlled the switch of relay, thereby the connection of control output signal and closing, dual resisteance has improved the accuracy of output switch amount control.
The self check of described output switch amount self check part is to realize by the feedback circuit of on-off state, output switch amount state feeds back to logic processor through the range of decrease, filtering, the isolation of output signal, the state of logic processor switch amount is judged, has realized the self check of switching value output signal.
Claims (2)
1. high voltage converter switching value control method, it is characterized in that: at the high voltage converter input high voltage converter switching value input measurement circuit is set, gather high voltage converter input switch amount signal, and high voltage converter input switch amount signal is accessed logic controller after by the signal range of decrease-rectification-filtering-isolation processing; Logic controller sends control command through after the calculation process, by the level conversion-isolation-filtering of switching value output control circuit process---after-relay the isolation processing, control turning on and off of external signal; In high voltage converter switching value control method, be provided with output switch amount self check part; The self check of output switch amount partly is after the switching value signal that output is controlled is passed through the range of decrease, isolation, to send into logic processor, and output switch amount state feeds back to logic processor by feedback circuit with output state, has realized the switching value self check; In addition, logic processor is by optical fiber and the communication of high voltage converter master controller;
Described high voltage converter switching value input measurement circuit refers to the measuring unit of high voltage converter input switch amount, input switch amount voltage signal is after the range of decrease, enter rectifier bridge, the signal after the rectification is sent into logic processor and is carried out logical process after carrying out filtering, isolation; In the measuring unit of high voltage converter input switch amount, range of decrease circuit is connected on before the rectifier bridge; And during the access of switching value input signal, carried out protection circuit against input over-voltage at the rectifier bridge input, be provided with piezo-resistance; The switching value input signal is after rectification, and high order harmonic component and interference signal during by the filtering switching value action of having processed filtering are by isolation processing isolated high-voltage and interference;
Described switching value output control circuit refers to high voltage converter switching value output control unit, send control signal by logic processor, after the isolation through output after the relay isolation, signal after the isolation is controlled the switch of relay, thereby the connection of control output signal and closing, dual resisteance has improved the accuracy of output switch amount control;
Described logic processor adopts a kind of in programmable gate array chip, complex programmable device chip, microcontroller chip and the digital signal processing chip, the state of switching value is sent into logic processor carry out logical operation; And at input switch amount state, the corresponding display lamp of each passage of switching value input, when the channel signal amplitude arrived preset value, display lamp was bright, can real-time monitored by the indicator light on the controller; At output switch amount state, the corresponding display lamp of each passage of switching value output, when output relay was closed, display lamp was bright, can real-time monitored by the indicator light on the controller; The state information of input/output switching amount is all carried out logical process by logic processor, and logic processor carries out communication by optical fiber and master control borad, and optical-fibre communications transfers the signal of telecommunication to light signal nearby, isolated high-voltage.
2. the switching value of high voltage converter control plug-in unit is characterized in that: comprise switching value input measurement circuit, switching value output control circuit and output switch amount self check part; Wherein, switching value input measurement circuit comprises signal range of decrease part, rectifying part, filtering part and isolated part, and signal accesses logic controller after switching value input measurement circuit is through the signal range of decrease-rectification-filtering-isolation processing; Switching value output control circuit also andlogic control device joins; The switching value output control circuit sends control command by logic controller, through level conversion-isolation-filtering---after-relay the isolation processing, control turning on and off of external signal; The state information of input/output switching amount is all carried out logical process by logic processor, and logic processor carries out communication by optical fiber and master control borad, and optical-fibre communications transfers the signal of telecommunication to light signal nearby, isolated high-voltage; The self check of output switch amount partly is after the switching value signal that output is controlled is passed through the range of decrease, isolation, to send into logic processor, and output switch amount state feeds back to logic processor by feedback circuit with output state, has realized the switching value self check;
Described switching value input measurement circuit refers to the measuring unit of high voltage converter input switch amount, and input switch amount voltage signal enters rectifier bridge after the range of decrease, and the signal after the rectification is sent into logic processor and carried out logical process after carrying out filtering, isolation; In switching value input measurement circuit, range of decrease circuit is connected on before the rectifier bridge; And during the access of switching value input signal, carried out protection circuit against input over-voltage at the rectifier bridge input, be provided with piezo-resistance; The switching value input signal is after rectification, and high order harmonic component and interference signal during by the filtering switching value action of having processed filtering are by isolation processing isolated high-voltage and interference;
Described switching value output control circuit refers to high voltage converter switching value output control unit, send control signal by logic processor, after the isolation through output after the relay isolation, signal after the isolation is controlled the switch of relay, thereby the connection of control output signal and closing, dual resisteance has improved the accuracy of output switch amount control;
Described logic processor adopts a kind of in programmable gate array chip, complex programmable device chip, microcontroller chip and the digital signal processing chip, the state of switching value is sent into logic processor carry out logical operation; And when input switch amount state, the corresponding display lamp of each passage of switching value input, when the channel signal amplitude arrived preset value, display lamp was bright, can real-time monitored by the indicator light on the controller; When output switch amount state, the corresponding display lamp of each passage of switching value output, when output relay was closed, display lamp was bright, can real-time monitored by the indicator light on the controller.
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| CN102841259B (en) * | 2012-09-24 | 2015-06-03 | 冶金自动化研究设计院 | Device and method for detecting insulation resistance of direct current system |
| CN102880159B (en) * | 2012-10-22 | 2014-07-23 | 广州三晶电气有限公司 | Switch output control method and device for variable-frequency drive |
| CN104375034B (en) * | 2014-11-07 | 2017-02-08 | 北京交控科技股份有限公司 | On-board equipment on-off output channel online self-checking system of subway signal system |
| CN104914333A (en) * | 2015-05-28 | 2015-09-16 | 株洲变流技术国家工程研究中心有限公司 | Remote monitoring system and method of high-voltage frequency converter |
| CN106200620B (en) * | 2016-08-17 | 2018-11-09 | 许继集团有限公司 | A kind of intelligent terminal outputs circuit self checking method and feedback circuit |
| CN106888523A (en) * | 2017-04-12 | 2017-06-23 | 南京中电熊猫照明有限公司 | One kind exchange is straight to drive LED light source module system |
| CN109164744A (en) * | 2018-10-09 | 2019-01-08 | 华北电力大学（保定） | A kind of digital output modul plug-in unit of high-voltage frequency converter |
| CN109212303B (en) * | 2018-10-22 | 2021-08-10 | 大禹电气科技股份有限公司 | Digital signal sampling processing circuit for high-voltage frequency converter |
| CN114552554A (en) * | 2020-11-25 | 2022-05-27 | 中兴通讯股份有限公司 | Switching value output circuit, circuit board assembly and electronic equipment |
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