High-frequency multiphase interleaved conversion device and control method

Abstract

The invention relates to a high-frequency multiphase interleaved conversion device and a control method, and belongs to the field of power electronics and electric drive. The device comprises a drive and power amplification unit, an EV (Electric Vehicle) manager module, an AD (Analog-Digital) sampling module, a DSP (Digital Signal Processor) processor, a serial port communication module, an HCI (Human-Computer Interaction) module, a DC (Direct Current) voltage detection circuit, a DC voltage conditioning circuit, a current detection circuit, a current conditioning circuit and a main circuit. The system adopts a double closed-loop control technology and a new topological structure to realize system stability and broad stability margin; three inductors at the front end of the topological structure work alternately, and the equivalent switching frequency is 6 times of the traditional switching frequency, so that the whole converter has high frequency, and the output voltage and the ripple amplitude and harmonic component of current are reduced; and the equal-time work of the three front-end inductors per unit time reduces the power requirements on power components IGBT (Insulated Gate Bipolar Transistor) and diodes, reduces the manufacturing cost of the whole device, and improves the application value of the DC converter.

Description

technical field [0001] The invention belongs to the field of power electronics and electric transmission, and in particular relates to a high-frequency multi-phase interleaved conversion device and a control method. Background technique [0002] In recent years, due to the shortage of traditional energy (petroleum, coal, etc.) and the impact on the environment during its use, people are actively looking for new energy to replace traditional energy or to find new ways to use traditional energy more efficiently, which makes The issue of new energy has received widespread attention. With the development of the world economy, automobiles have become one of the important tools for people to travel, followed by a large amount of vehicle exhaust emissions and the consumption of a large amount of traditional energy, people began to pay attention to pure electric vehicles, fuel hybrid vehicles, gasoline-electric hybrid vehicles, etc. Development of new energy vehicles. [0003] At ...

AI Technical Summary

Problems solved by technology

Although fuel cells have many advantages, they also have the disadvantage of slow dynamic response. Therefore, fuel cells in new energy vehicles should be mixed with energy storage devices (batteries, supercapacitors, etc.) to meet the instantaneous power peak requirements of electric vehicles.

Images