![]() ![]() Engineers will then have a better understanding of how to design a module that will pass the EMC requirements in the EMC test chamber. Then, we’ll highlight EMC challenges in the powertrain module design and demonstrate design techniques to address potential EMC issues. Therefore, we’ll first review in this article the HV standards and regulations that apply to electric powertrain modules. The high voltage (HV) EMC regulations and requirements present a daunting task for not only new entrants but also for well-established companies in the automotive industry. It is critical to factor in EMC design considerations at an early stage so as to achieve the overall system design goal. The importance of design engineers taking a system-level overview of an EV powertrain module was presented in my previous work, “Demystifying EMC in an Electric Vehicle’s Drive Unit”. įigure 1: System diagram of an EV electric powertrain module The electric system diagram of an EV powertrain module is illustrated in Figure 1. This article presents the EMC design of a powertrain module, which consists of an electric motor, an inverter, and a mechanical gearbox. For instance, the Nissan LEAF has achieved a very compact e-powertrain module design by integrating an on-board charger (OBC), a DC-DC converter, and a junction box with the electric drive unit (EDU). The current trend is to achieve a more compact module design with higher power density and system efficiency. ![]() Both vehicle manufacturers and Tier-1 suppliers have been spending considerable resources researching and developing state-of-the-art technologies for EVs. Powertrain modules are one of the key differentiators in the EV industry. A recent study has shown that going half-way (as plug-in hybrid vehicles do) might not be sufficient to bring carbon emissions in line with new regulations, which will require more full EVs on the road. The past decade has witnessed the fast-paced adoption of electrification in the automotive industry, with an increasing number of hybrid and full electric vehicles coming to the market. Therefore, engineers from other industries can also benefit from these techniques. It should be noted that the introduced design techniques in this article share the same principles as any other EMC engineering. Examples are given to demonstrate some of the key design techniques. The main part of this article will share design techniques that engineers can apply on various parts of a powertrain module, including ground, front-end filter, inverter design, and so on. I will then highlight the risks and challenges when designing such modules. In this article, using a powertrain module as an example, I will first introduce the high voltage EMC regulations with which a powertrain module needs to comply. These kinds of design rules are often borrowed from other industries, and they are not up to date with the latest technology involved in the fast-paced EV industry. W hen helping clients in the electric vehicle (EV) industry with their module design, I often find that engineers tend to follow an out-of-date list of do’s and don’ts in the form of EMC design rules without understanding the basics. ![]() State-of-the-Art EMC Designs to Consider Before Your Next Module Project ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |