A direct mapped method for accurate modeling and real-time simulation of high switching frequency resonant converters

TL;DR

This paper introduces a Direct Mapped Method (DMM) for real-time, accurate simulation of high-frequency resonant converters, implemented on FPGA to achieve microsecond-level simulation steps.

Contribution

The paper proposes a novel DMM that provides exact, noniterative solutions linking state variables to diode statuses for high-frequency converter simulation.

Findings

Achieves 25 ns simulation time-step on FPGA.

Supports switching frequencies up to 500 kHz.

Demonstrates wide range of clock frequencies from 40 MHz to 320 MHz.

Abstract

This paper presents a Direct Mapped Method (DMM) for real-time simulation of high switching frequency resonant converters. The DMM links state variables to diode statuses and provides an exact and noniterative solution to network equations. The proposed method is implemented on FPGA to simulate an LLC converter with switching frequencies ranging up to 500 kHz. The best reported implementations of DMM achieve a 25 ns simulation time-step for a wide range of clock frequencies, ranging from 40 MHz to 320 MHz.