Power Flow Decoupling Controller for Triple Active Bridge Based on Fourier Decomposition of Transformer Currents

Abstract

This paper proposes a power flows decoupling controller for the triple active bridge converter. The controller is based on a full-order continuous-time model of the TAB converter derived using the generalized average modelling (GAM) technique. GAM uses the Fourier series expansion to decompose the state-space variables into two components, which represent the active power and the reactive power. The controller uses the active power components of the transformer currents to decouple the active power flows between converter ports. Additionally, the implementation of the decoupling controller in the digital domain is detailed in the paper. The decoupling performance of the proposed controller is validated in a hardware experiment.

A Survey on Multi-Active Bridge DC-DC Converters: Power Flow Decoupling Techniques, Applications, and Challenges

“…[ 79,[114][115][116][117]124,160] [ 63,72,96,165,166] Model-free (black-box) Easy to implement. Robust to uncetenities.…”

“…Other researchers have aimed to solve the nonlinear control-to-output equations (online or offline), to implement effective decoupling over a wider range [35,52,96,97]. However, similar to MPC-based approaches, the computational cost of online calculation using iterative methods (e.g., Newton method) can be high, and having simplified iterative methods or lower iteration numbers can affect the accuracy and performance.…”

Регулятор Вихідної Напруги Активного Випрямляча На Основі Ковзного Режиму

“…Для пoкращeння якoстi eлeктричнoї eнeргiї дo трифaзних випрямлячiв з ширoтнo-iмпульснoю мoдуляцiєю зaстoсoвaнo бaгaтo мeтoдiв кeрувaння. У публiкaцiях [11,12] нaвeдeнo схeми aктивних випрямлячiв з пoслiдoвним з'єднaнням двoх мoстiв, щo прaцюють нa oднe нaвaнтaжeння. Пeрeвaгaми цих мeтoдiв кeрувaння є мeншi знaчeння нaпруги, приклaдeнoї дo ключiв, щo дaє змoгу рeaлiзувaти пeрeтвoрювaч бiльшoї пoтужнoстi.…”