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Digital UPS/EPS space vector modulation algorithm

A technology of space vector modulation and algorithm, which is applied in the direction of output power conversion device, electrical components, irreversible DC power input to AC power output, etc. It can solve the problem of sudden increase of inverter switching mode and complex SVPWM control algorithm, etc. question

Inactive Publication Date: 2008-07-16
HUNAN UNIV
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Problems solved by technology

But at the same time, due to the increase of switching devices, the switching mode of the inverter increases sharply, which makes the SVPWM control algorithm more complicated

Method used

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  • Digital UPS/EPS space vector modulation algorithm
  • Digital UPS/EPS space vector modulation algorithm
  • Digital UPS/EPS space vector modulation algorithm

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Embodiment Construction

[0148] In order to meet the requirements of fast calculation of the UPS / EPS core CVCF-VSI space vector inverter control algorithm, the TMS320LF2407 digital signal processor (Digital Signal Processor) of Texas Instruments (TI) was selected as the control chip for algorithm realization. The chip has The following features:

[0149] 1. Adopt high-performance static CMOS technology, which reduces the power supply voltage to 3.3V and reduces the power consumption of the controller. The Harvard structure is used internally, and the pipeline operation is performed. Under the internal clock frequency of 40MHz, the instruction cycle is only 25ns, thus improving the real-time control ability of the controller;

[0150] 2. The chip has up to 32K words of FLASH program memory, 2.5K words of data (program) memory, and can also expand the memory space of 192K words: 64K words of program memory space, 64K words of data memory space, 64K words of I / O O addressing space;

[0151] 3. Two even...

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Abstract

This invention relates to a space vector modulation algorithm of digitalized UPS / EPS, in which, the algorithm of its three-phase space vector includes utilizing eight scattered output voltage vectors generated by the three phase sine inverse bridge circuit to approach to the desired output voltage vector by linear combination, the single phase space vector modulation algorithm includes: utilizing four kinds of scattered output line voltage vectors generated by a single phase sine inverse bridge circuit to approach to the desired output voltage vector by linear combination and determining the action time of said voltage vector.

Description

technical field [0001] The invention relates to a digital UPS uninterruptible power supply and a space vector modulation algorithm of an EPS emergency power supply. Background technique [0002] With power electronic devices as the core, power electronics technology for power processing is an important direction for the development of electronic technology. Power electronics is electronics applied in the field of electric power. It mainly focuses on the control and conversion of electric energy by power electronic devices. It is a cross-border subject involving the three major engineering fields of electronics, electricity and control. The research of power electronics includes three basic contents: the manufacture of power electronic devices, the way of power electronic conversion and the control technology of power electronic circuits. [0003] Power electronic conversion methods can be divided into four categories: DC / AC inverter, AC / DC rectifier, DC / DC chopping and AC / A...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M7/48H02M7/537H02M7/5387
Inventor 戴瑜兴易龙强郜克存
Owner HUNAN UNIV
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