Automatic control system for high-frequency high voltage static dust-collecting power supply based on DSP+FPGA

Abstract

The invention discloses an automatic control system for a high-frequency high voltage static dust-collecting power supply based on DSP+FPGA. The automatic control system comprises a power supply plate, an analog digital signal conditioning plate, a DSP+FPGA main control panel, an IGBT (Insulated Gate Bipolar Transistor) driving plate and an upper computer, wherein the power supply plate is connected with the analog digital signal conditioning plate, the DSP+FPGA main control panel and the IGBT driving plate; the analog digital signal conditioning plate is used for collecting and conditioning the analog quantity and digital quantity in a main circuit of the dust-collecting power supply and transmitting the voltage analog quantity after being conditioned to the DSP+FPGA main control panel; the DSP+FPGA main control panel combines the collected information for sending a PWM (Pulse Width Modulation) signal and a relay control signal; after being conditioned through the signal conditioning plate, the relay control signal is used for controlling a relay; the PWM signal is used for controlling a full bridge inversion circuit in the main circuit of the dust-collecting power supply through an IGBT driving circuit; and the DSP+FPGA main control panel and the upper computer have data exchange through a CAN (Controller Area Network) bus. The automatic control system provided by the invention has the advantages that the data running is more stable, the system safety is high, the monitoring efficiency is increased and the response speed for output voltage adjustment is quickened.

Description

technical field [0001] The invention belongs to the technical field of frequency conversion control, in particular to an automatic control system for a high-frequency and high-voltage electrostatic dust removal power supply based on DSP+FPGA. Background technique [0002] With the rapid development of my country's economy, the scale of industrial production has expanded rapidly. Environmental problems such as serious smog and excessive PM2.5 concentration have seriously affected people's health, and at the same time restricted the further development of industrialization. The main cause of this series of phenomena is the smoke (powder) dust that is discharged into the air without treatment during the industrial production process. Therefore, the control of industrial dust pollution has attracted more and more attention. [0003] The basic principle of the electrostatic precipitator is to make the dust-containing gas pass through a high-voltage electric field, so that the su...

AI Technical Summary

Problems solved by technology

[0005] 1. The ADC module of the DSP adopts a serial working mode, and its external interface has poor versatility, and can only convert the signal of one channel at the same time, resulting in that the data acquisition speed cannot meet the requirements of fast control

[0006] 2. Frequent use of the interrupt system by software to control A / D conversion uses a lot of DSP resources, weakens the computing power of DSP, and limits the acquisition speed

[0007] 3. The software control of DSP is completed by the instruction set, and its execution is limited by the instruction cycle. Therefore, the acquisition frequency of DSP is largely restricted by the clock, and the maximum acquisition speed can only reach tens of megabytes or hundreds of megabytes.

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