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Patrick Kowalyk, presenter at WCX2024


Eliminating the high voltage precharge with existing hardware in BEVs

Who should watch?

Power engineers who want to learn benefits of eliminating the precharge contactor and resistor using power modules

What's it about?

Any high-voltage bus needs to have a precharge circuit to reduce the current flow over a period of time, called the dv/dt, to protect the electronic devices in a battery electric vehicle. The challenge with a traditional solution to this age-long problem is that the precharge resistor charge time is inversely proportional to the power dissipation.

A better approach is taking the power components in the battery electric vehicle and reusing them to charge the high voltage bus from a low-voltage source. Using power modules the regulator can be used in reverse, regulating the voltage and current.

This webinar focuses on:

  • What is a precharge and why it is important
  • Challenges precharging from a high-voltage source
  • Comparisons of precharges
  • Advantages of using a precharge from a low voltage source

To watch this webinar please complete the brief registration form

About the presenter

Patrick Kowalyk

Automotive Principal Field Applications Engineer, North America

Patrick Kowalyk has been providing automotive power systems for over 6 years, but has been practicing engineer for decades. Patrick’s deep technical knowledge has been instrumental in growing the Vicor automotive business. His technical mastery of electrical engineering as related to power modules, topologies and architectures is second to none. Kowalyk has been a catalyst for helping design compact, efficient power systems for OEMs and Tier One customers. He holds a BS in Electrical Engineering from the Illinois Institute of Technology.

Patrick Kowalyk, Automotive Principal Field Applications Engineer, North America