Research and design of ignition system of pulse detonation engine

Abstract

In order to study the influence of ignition parameters on the operation performance of pulse detonation engine, an adjustment both in ignition energy and frequency ignition system was researched. Based on the study of topologies of power electronics, the buck DC/DC converter was adopted in adjusting input voltage, and an LCC series-parallel resonant inverter with step-up transformer was applied in boosting voltage while power transistors were employed in controlling the spark frequency to design the semiconductor low voltage-high energy ignition system. The control circuits of the main circuit and frequency controlling unit were also particularly designed. The analytical model of the converter is based on the basic circuit theories and the normalized averaging technique. The simulations of the circuit by MATLAB/Simulink show that both ignition energy and ignition frequency are controllable as expected, so the new designed system can meet the PDE's requirements of the initiation system. © 2014 Springer Science+Business Media New York.