Requirements of hybrid and electric buses - a huge challenge for power electronics

Abstract

The ongoing development of drives for city buses is marked by an increasing hybridization and electrification. A high operation time and the utilization of new drive concepts using permanentmagnet synchronous machines (PMSM) require very durable power electronic and hence power semiconductor technology. First of all the article will initially explain current and future city bus drive concepts and then look at the resultant requirements on power electronics. Starting with state-of-theart drives it will be shown that future drive concepts using PMSM will result in new requirements for power electronics and especially on the load-cycling capability of IGBT. Strategies to fulfill these requirements will be discussed in the second part. The last chapter provides an overview of promising new packaging technologies for power semiconductors. The potential thermal cycling capability of these new technologies will be estimated. Finally the potential of SiC for the lifetime of electric drives will be briefly evaluated.

Survey of DC-DC Non-Isolated Topologies for Unidirectional Power Flow in Fuel Cell Vehicles

“…The FCV's and HVEs technologies are overgrowing due to the advancement in Power Electronics (PE) [35]- [38]. Both the FCVs and HEVs offer the cleaner and less emission of CHG, which are the alternative to conventional ICE for the future generation.…”

“…The power circuit of the converter-I and converter-II and converter-III showed in Fig. 16(a)-(c) and voltage conversion ratio provided in the equation 33- (35) respectively.…”

Implementation of an Advanced Modelica Library for Evaluation of Inverter Loss Modeling

“…They play a crucial role in the modern world and are an essential part of electrical power systems in modern transport applications. For example, they are commonly used to drive electrical machines within electric vehicles [1][2] and actuator systems within More Electric Aircraft [3].…”