Static var generator possessing complete active power filter (APF) function

A static reactive power generator technology, applied in active power filtering, reactive power adjustment/elimination/compensation, flexible AC transmission systems, etc., and can solve problems such as space occupation

Active Publication Date: 2014-09-24
STATE GRID CORP OF CHINA +1
View PDF3 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, although SVG and APF are widely used and developed, they are used as two kinds of

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Static var generator possessing complete active power filter (APF) function
  • Static var generator possessing complete active power filter (APF) function
  • Static var generator possessing complete active power filter (APF) function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0017] A static var generator with full APF functionality, such as figure 1 As shown, it includes RISC processor, FPGA module, six DSP processors, SVG inverter and its PWM driving circuit, APF inverter and its PWM driving circuit, in which the FPGA module is the main processor, and the RISC processor is the slave Processor, six DSP processors are coprocessors. The FPGA module is connected to the RISC processor and six DSP processors respectively. The FPGA module is connected to the RISC processor to realize the data interaction function. The FPGA module is connected to the six DSP processors to control the DSP processor and start data sampling at the same time. , Synchronously process data, control inverter current, generate PWM timing and other tasks to ensure accurate compensation performance. The FPGA module is also connected to the digital signal through...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The present invention relates to a static var generator possessing a complete APF function. The technical characteristics are that the static var generator possessing the complete APF function comprises an RISC processor, an FPGA module, six DSPs, a SVG inverter, a PWM drive circuit of the SVG inverter, an APF inverter and a PWM drive circuit of the APF inverter; the FPGA module is connected with the RISC processor and the six DSPs separately, and all the six DSPs acquire the current of a power grid via a hall sensor, a signal adjusting circuit and an A/D conversion module, are responsible for the algorithm operation of a SVG function and the APF function and the PWM driving signal output, drive the SVG inverter and the APF inverter to work separately, and are also connected with a synchronization detection circuit and a phase-locked loop circuit separately. In order to compensate a reactive current and a harmonic current accurately and timely, the static var generator possessing the complete APF function obtains a load current reactive signal and a harmonic signal rapidly and accurately in a multi-CPU control manner to generate a corresponding compensation signal to offset the reactive power and harmonic wave in a power supply, thereby achieving the purposes of reactive compensation and harmonic cancellation.

Description

technical field [0001] The invention belongs to the technical field of var generators, in particular to a static var generator with complete APF function. Background technique [0002] In the 1980s, due to the proposal of Akagi Taifumi's instantaneous reactive power theory, the maturity of high-power semiconductor devices, and the advancement of pulse width modulation (PWM) control technology, static var generators (SVG) and active power filters ( The realization and improvement of APF) laid a theoretical and technical foundation. In recent years, due to the consideration of energy saving and environmental protection, power electronic conversion devices in the distribution network terminal power supply system have been more and more widely used, but this kind of nonlinear power conversion device often induces Harmonic and reactive current problems urgently require SVG and APF to be widely used in various fields of electric power. At present, although SVG and APF have been ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H02J3/18
CPCY02E40/10Y02E40/20
Inventor 朱赫李景云
Owner STATE GRID CORP OF CHINA
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap