Digital control device of converter

A digital control and converter technology, applied in output power conversion devices, circuit devices, battery circuit devices, etc., to achieve high real-time performance, high operating frequency, and rich integration resources.

Active Publication Date: 2012-08-01
CHINA ELECTRIC POWER RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Various interference signals are mixed into the analog signal, which can easily lead to the failure of the control device, and its structure and processing process cannot be applied to the requirements of distributed control and the requirements of digital processing in the whole process

Method used

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  • Digital control device of converter
  • Digital control device of converter
  • Digital control device of converter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] (1) Data sampling part: The current and voltage signals on the charging side are processed through the Hall voltage, current sensor and filter circuit, and the digital sampling is performed by the A / D sampling circuit.

[0024] (2) Pulse width modulation PWM modulation part: TMS320F2812 performs P (proportional ), I (integral) operation to obtain the voltage feedback value, the voltage is used as the modulation wave and the carrier signal to perform digital operations and output the PWM signal to control the IGBT to achieve voltage and current control.

[0025] (3) Remote communication part: communicate with the upper computer through the CAN2.0 controller to obtain the start-up command of the converter, the emergency stop command, the reference voltage and current value during the conversion process, and the status during the conversion process The data is transmitted to the CAN bus in real time and displayed by the host computer.

[0026] (4) On-site communication pa...

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PUM

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Abstract

The invention relates to a digital control device of a converter, which is a fully-digitized control device scheme of a flow battery energy storage converter based on TMS320F2812 DSP (Digital Signal Processor) chip control. The invention proposes a flow battery electric energy management system by studying the charge and discharge properties and the charged state of the flow battery and the application of peak clipping and valley filling of electric energy. Proved by practical application, the control device has good converting performance, can make the flow battery reach the fully charged state at a high rate, and does not influence the service life of the battery.

Description

technical field [0001] The invention belongs to the field of power system controllers, and in particular relates to a digital signal control device for a converter of a liquid flow battery energy storage system. Background technique [0002] Energy storage technology provides a new way to solve the existing problems of the power supply chain (fuel, power generation, transmission, distribution and consumption) and realize the sustainable development of the power grid. The use of large-scale power storage technology can effectively alleviate the contradiction between power supply and demand, improve the security and stability of the power grid, improve the quality of power supply, and promote the utilization and development of renewable energy. The converter is an important link in the energy storage system. The converter acts as the core unit in the entire energy storage system, and the control platform of the converter system is directly related to the accuracy, reliability...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00H02M7/5387H02M3/155
Inventor 闫涛王杨许守平
Owner CHINA ELECTRIC POWER RES INST
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