Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A Power Amplifier for Real-time Simulation of Power System

A power amplifier, real-time simulation technology, applied in the output power conversion device, the conversion of AC power input to AC power output, the conversion of AC power input to DC power output, etc. , short delay and other problems, to achieve the effect of improving output power level, power level, and satisfying real-time simulation

Active Publication Date: 2021-03-16
CHINA ELECTRIC POWER RES INST +1
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, in order to meet the requirements of real-time changes and high-frequency harmonics, the products on the market all use linear power semiconductor devices to build topology structures. The advantages of linear power semiconductor devices are that the output of strong electric voltage can follow the change of weak electric The frequency range is wide and there is no harmonic interference; however, due to the technical level limitation of linear power semiconductor devices and the fact that they work in the linear working area of ​​semiconductor devices, the semiconductor itself generates serious heat, and the heat generation is proportional to the increase in the power flowing through. Therefore, the power level of power amplifiers using linear power semiconductor devices cannot be very high
On the other hand, the main circuit of the power amplifier using linear power devices is a simple amplifying circuit, which cannot realize the control algorithm of power feedback to the grid, and when the power amplifier is externally connected to power generation equipment, the power input to the power amplifier can only rely on internal energy consumption Resistor consumption, and the resistance of the internal energy-dissipating resistor is limited by the size and heat of the resistor and cannot be done very much, and the power usage needs to be reduced, thus limiting the use of power amplifiers

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
  • A Power Amplifier for Real-time Simulation of Power System
  • A Power Amplifier for Real-time Simulation of Power System
  • A Power Amplifier for Real-time Simulation of Power System

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0059] Such as figure 1 As shown, the present invention includes three parts: analog sampling circuit, a control system, a strong electric circuit. Such as figure 2 As shown, this product requires 6 single-phase isolation transformers of 220V: 220V, 3 inputs, 3 output sides. One end of the input side three single-phase transformers is connected to the A phase, B phase, and the C phase of the grid through the wire, and the other end is connected together by a wire; one end of the output side three single-phase transformers is connected together by a wire, another One end is used as the A phase, B phase, and C phase output of the amplifier; in addition, the power portion of the present invention requires IGBT24, which constitutes three single-phase back-back converter;

[0060] The analog sampling circuit is a weak electric portion of the present invention. The analog sampling circuit requires an ADC chip to achieve, and the generation of PWM waves requires DSP to be implemented, ...

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 invention provides a power amplifier for real-time simulation of a power system. The power amplifier comprises three phases of independently-operating amplification circuits, each amplification circuit comprises a high-precision analog sampling circuit, a control system and a strong current circuit which are connected in sequence; the control system comprises a DSP controller; the strong current circuit comprises a back-to-back converter; and the power amplifier outputs load through a three-phase star structure formed by connection of single-phase output transformers in the back-to-back converter. The technical scheme provided in the invention greatly improves the output power grade and reduces the heating amount of the device.

Description

Technical field [0001] The present invention belongs to the real-time simulation of power systems, and in particular, the present invention provides a power amplifier for real-time simulation of power systems. Background technique [0002] Power amplifier (English name: power amplifier, referred to as * # * amplifier * # *, is an amplifier that generates maximum power output under a given disappearance to drive a certain load. [0003] As the power amplifier of the power system power in the ring simulation core device, the most important function is that the output of the power voltage follows the input weak electric signal real-time change, and the power system simulation requires the normal and fault working state of the power system, so the power amplifier is also It is necessary to have high-frequency harmonic injection, low-frequency harmonic disturbance, unbalanced voltage output, and higher power level, high technical requirements for the topology design and control algori...

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
Patent Type & Authority Patents(China)
IPC IPC(8): H02M5/458H02M7/219H02M7/5387
CPCH02M5/458H02M7/219H02M7/53873H02M7/53875
Inventor 李洋石文辉张兴高松罗魁
Owner CHINA ELECTRIC POWER RES INST
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products