【摘要】：車載變頻機電源是一種可移動的配電裝置,可以輸出不同頻率的交流電滿足用電設(shè)備對電源的需求。本文介紹的車載變頻機電源控制系統(tǒng)主要由微處理器及其控制電路、編程計算機、監(jiān)控計算機組成,它是野外電氣設(shè)備供電的發(fā)電、配電系統(tǒng)。該系統(tǒng)可依據(jù)負(fù)載大小控制四臺變頻機組單獨或并列對外供應(yīng)電能。為了確保變頻機控制系統(tǒng)的正常工作,安全供電,系統(tǒng)需要對供電的電壓及電流進(jìn)行實時精確檢測,完成對供電繼電器的自動投切,實現(xiàn)過載保護(hù)等功能。車載變頻機嵌入式集散控制系統(tǒng)由1塊主控制板、1塊主控面板、2塊分控制板和2塊分控面板通過串行通信組網(wǎng)而成,分裝在三個控制箱中�？刂瓢鍘в邢鄳�(yīng)的執(zhí)行器,完成開關(guān)量的檢測與控制及模擬量的檢測功能。系統(tǒng)的模擬量檢測總計56路,開關(guān)量檢測和控制各為144路,其中56路模擬量檢測需要對相應(yīng)的開關(guān)量輸出控制實現(xiàn)過載保護(hù)�？刂瓢搴涂刂泼姘寰捎糜w凌公司的第五代產(chǎn)品XC-2365微處理器作為主控芯片進(jìn)行設(shè)計,擴展外圍模塊電路,構(gòu)成嵌入式系統(tǒng)。車載變頻機電源需要主控面板按實際需求編制相應(yīng)的啟動模式,通過相應(yīng)的啟動按鍵自動完成發(fā)電、配電過程,主控面板可編制并記憶6種發(fā)電、配電啟動模式,按順序完成各繼電器的控制。系統(tǒng)也可由分控面板上的控制按鍵手動完成發(fā)電、配電過程,手動控制與自動控制之間采用互鎖方式,保證系統(tǒng)安全運行。針對車載變頻機控制系統(tǒng)中待測模擬量較多的問題,設(shè)計了模擬量檢測多通道擴展電路,采用遠(yuǎn)程定標(biāo)方法,編制嵌入式模擬量檢測程序,完成對多路模擬量的測量工作。該定標(biāo)方法具有定標(biāo)過程快速、簡便、精確等特點,適合于工業(yè)現(xiàn)場模擬量測量的定標(biāo)及校驗。監(jiān)控計算機采用VB(Visual Basic)編程,與各控制箱之間串行通信,可對車載變頻機控制系統(tǒng)實施監(jiān)控,并實現(xiàn)主控制板和分控制板模擬量檢測的遠(yuǎn)程定標(biāo)過程。
[Abstract]:The on-board frequency converter power supply is a movable power distribution device, which can output alternating current with different frequencies to meet the demand of power supply. In this paper, the power control system of on-board frequency converter is mainly composed of microprocessor and its control circuit, programming computer and monitoring computer. It is a power generation and distribution system supplied by field electrical equipment. The system can control the power supply of four frequency conversion units individually or juxtaposed according to the load. In order to ensure the normal operation and safe power supply of the inverter control system, the system needs real-time accurate detection of the voltage and current of the power supply, the automatic switching of the power supply relay and the realization of overload protection and so on. The embedded distributed control system of vehicle frequency converter consists of one main control board, one main control panel and two separate control panels, which are divided into three control boxes through serial communication. The control board is equipped with the corresponding actuator to detect and control the switch quantity and to detect the analog quantity. The total number of analog signal detection in the system is 56, and the switch quantity detection and control are 144, among which 56 analog signal detection needs to realize overload protection for the corresponding switch output control. Both the control board and the control panel are designed with the fifth generation XC-2365 microprocessor of Infineon Company as the main control chip and the peripheral circuit is extended to form an embedded system. The main control panel is required to compile the corresponding starting mode according to the actual demand, and the power generation and distribution process can be completed automatically by the corresponding startup keys. The main control panel can compile and memorize 6 power generation and distribution startup modes. Control the relays in sequence. The system can also manually complete the generation and distribution process by the control keys on the sub-control panel. The interlocking mode between manual control and automatic control is adopted to ensure the safe operation of the system. In order to solve the problem that there is more analog quantity to be tested in the control system of vehicle frequency converter, a multichannel extended circuit for analog quantity detection is designed, and the embedded analog quantity detection program is compiled by remote calibration method to complete the measurement of multi-channel analog quantity. The calibration method has the characteristics of fast, simple and accurate, and is suitable for calibration and verification of industrial field analog measurement. The monitoring computer uses VB (Visual Basic) programming and serial communication with each control box. It can monitor and control the control system of the vehicle frequency converter and realize the remote calibration process of the main control board and the sub-control board analog quantity detection.
【學(xué)位授予單位】：沈陽理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TP273

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