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Control panel and method of FPGA (Field Programmable Gate Array) based program control standard source

A control method and standard source technology, applied to the components of electrical measuring instruments, measuring devices, instruments, etc., can solve the problems of complex implementation, slow calculation speed, and low precision, and achieve simple implementation, fast processing speed, and improved calculation. speed effect

Inactive Publication Date: 2012-07-25
JIANGSU UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The invention provides a control board of a program-controlled standard source based on FPGA, which solves the problems of low precision, slow calculation speed and complicated implementation of the existing standard source

Method used

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  • Control panel and method of FPGA (Field Programmable Gate Array) based program control standard source
  • Control panel and method of FPGA (Field Programmable Gate Array) based program control standard source
  • Control panel and method of FPGA (Field Programmable Gate Array) based program control standard source

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Embodiment Construction

[0027] like figure 1 As shown, this example is a control board based on a high-performance ultra-large-scale field programmable logic gate array (FPGA) program-controlled standard source, which is mainly composed of an FPGA chip XC3S50A and a DAC chip AD5547, and also includes an RS-232 transceiver Auxiliary external devices such as driver chip MAX3223 and operational amplifier AD8512.

[0028] The control panel of the program-controlled standard source is as figure 1 As shown, the RS-232 transceiver driver chip MAX3223 TTL level transmit data pin 17 and TTL level receive data pin 16 are respectively connected to the corresponding IO pins of the FPGA chip XC3S50A; the DAC chip AD5547 controls the write control signal pin of the bus 18. Register control signal pin 21, register reset signal pin 23, chip reset signal pin 22, high address signal pin 19 and low address signal pin 20 are respectively connected to corresponding IO pins of FPGA chip XC3S50A, DAC chip AD5547 Pin 1,...

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Abstract

The invention discloses a control panel and method of an FPGA (Field Programmable Gate Array) based program control standard source, belonging to the technical field of power automation, and aiming to solve the problems of low accuracy, low calculation speed and complicated implementation of the existing standard source. The control panel is formed by combining an FPGA chip with a DAC (Digital-to-Analog Converter) chip, and further comprises auxiliary external devices such as an RS-232 transceiver driver chip, and an operational amplifier. The parameters such as amplitude, frequency and phase of an output signal are received through a serial port, and desired waveform data are generated in real time through rapid calculation according to the corresponding parameters. The method provided by the invention comprises the following steps of: generating harmonic wave and fundamental wave by means of a DDS (Direct Digital Synthesis) technology respectively; obtaining standard source data by superposing harmonic wave data on fundamental wave data; sending the standard source data to a DAC module for digital-to-analog conversion, and then generating desired voltage signal and current signal. The control panel provided by the invention has the characteristics of high integrity, complete functions, high conversion speed, high signal accuracy and the like, and is easy to modify and upgrade; and as a result, low cost and high performance are achieved.

Description

technical field [0001] The invention relates to a control board and method of a program-controlled standard source based on a high-performance ultra-large-scale field programmable logic gate array (FPGA), and belongs to the technical field of electric power automation. Background technique [0002] In the power system, due to the existence of nonlinear electrical equipment such as large-scale power start-stop devices, rectifier equipment, and frequency conversion devices, the nonlinear (harmonic) fluctuations of the power grid are relatively large, resulting in severe distortion of the voltage and current waveforms of the power system. Increase the unbalance of voltage and current and reduce the power quality. Therefore, in the power system, instrumentation calibration and power quality index testing require special signal sources, which mainly provide 2-21 high-precision power frequency harmonic detection signals. [0003] The traditional low-frequency harmonic detection s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R1/28
Inventor 俞孟蕻齐亮单菡
Owner JIANGSU UNIV OF SCI & TECH
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