Digital signal processor (DSP) embedded controller for electric dust-removing three-phase high-voltage direct-current power supply

Abstract

The invention relates to a digital signal processor (DSP) embedded controller for an electric dust-removing three-phase high-voltage direct-current power supply, comprising a hardware system and a software system. The DSP embedded controller is characterized in that the hardware system comprises a control core unit of a DSP, a synchronizing signal circuit, a trigger pulse circuit, a digital quantity output circuit, a digital quantity input circuit, an analog quantity collecting circuit, a communication connector, a man-machine display, an operative keyboard, a power supply module and an photoelectric isolator; and the software system is started to normally run by electric resetting or keyboard resetting on the system, and then a software interrupting module, a hardware interrupting moduleand a task module in the control software are managed and controlled by a DSP / basic input / output system (BIOS) operating system after the software system is initialized. The invention solves the problems existing in the three-phase thyristor voltage-regulating high-voltage direct-current power supply for electric dust removal and increases the reliability of the system, and can improve the effectof electric dust removal after integrally optimizing an electric dust removing system, thereby achieving the requirement of environmental protection.

Description

technical field [0001] The invention is an embedded control management system for electric dust removal, in particular to an electric dust removal three-phase high-voltage DC power supply DSP embedded controller, which controls the high-voltage DC power supply based on three-phase thyristor voltage regulation, and optimizes the secondary high-voltage output , optimize the rapping output, and monitor the real-time working status of the dust collector, which are the core components for the control and management of electric dust removal to meet the requirements of dust removal and environmental protection. Background technique [0002] The three-phase thyristor voltage-regulated high-voltage DC power supply for electrostatic precipitator has the advantages of balanced power supply, high power utilization rate, large secondary output power and small ripple coefficient. It is a power supply that can effectively improve dust removal efficiency and can be used in most existing Upg...

AI Technical Summary

Problems solved by technology

At the same time, it also has high flashover discharge intensity and large energy on the secondary side, which generates a strong secondary sampling interference signal; the primary side also generates many high-order harmonics during the amplitude modulation process of the three-phase thyristor, which distorts the voltage waveform of the power supply. shortcoming

The existing controller is based on the simple feedback control of a single electric field signal of electrostatic precipitator, which is difficult to meet the increasingly stringent environmental protection requirements

The existing controller is connected with the upper computer management system, using a non-standard custom communication protocol, which makes the configuration complex and difficult

The control core adopts a single-chip microcomputer chip. The processing ability and speed of the single-chip microcomputer are relatively weak, and there are few digital IO and analog channel interfaces. The structure is generally complex, resulting in poor anti-interference ability, poor reliability, and poor scalability. Restricted by the processing capacity of the single-chip microcomputer, It is difficult to achieve the overall optimization of the electrostatic precipitator system

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