The book "Design, Modelling and Application of the IGBT" offers a comprehensive analysis and optimization of IGBT structures that are crucial in power electronics. It addresses the physical operating mechanisms of conventional IGBT designs and examines conductivity modulation in detail. A novel composite model is introduced that allows for fast computation speeds with reasonable accuracy. Furthermore, the effects of the two-dimensional IGBT structure on electrical properties are analyzed, and a corresponding model is developed that is useful for both component structure design and circuit simulation. The book also provides a thorough review and classification of existing IGBT models in the literature and discusses the requirements, issues, and trends in the field of IGBT modeling. Additionally, application problems such as negative gate-bias requirements in the off state and the use of turn-on damping elements are addressed. The differences in electrical, thermal, and faulty behavior between PT-IGBTs and NPT-IGBTs are also investigated.