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High Voltage Power Classroom

Welcome to this installment of EE Classroom on High Voltage Power.

With the proliferation of HEV/EVs driving more practical 48 V electrical subsystems and the reliance on more stable and efficient power transmission lines grows, so does the need to create advanced high voltage designs. More complicated than traditional wiring in combustion-engine vehicles , high-voltage components require larger and appropriately shielded connectors, larger and heavier cables to handle the high power, and quick-charging systems.

In this classroom, you will learn the basics of high-voltage DC technology including techniques available to boost lower voltages. Tutorials will also guide you through the inner workings of battery management systems, the unique challenges of EV charging systems, and the benefits of high voltage DC transmission, converters, components, and systems.

Charge ahead...

Aimee Kalnoskas

Editor in Chief, EE World Online

 High Voltage Power Classroom Sponsored by:


Charging electric vehicles, Part 1: The numbers

Vehicle electrical systems: Zero-to-sixty in 48 volts

Charging electric vehicles, Part 2: The connections

Charging EVs is a very different and more complex than for gas- or even diesel-powered IC vehicles.

A look at the hardware (which also involves software) needed to charge EVs.

48-V electrical systems will reduce CO2 emissions and make practical super-efficient electrical subsystems.

Featured Resources

VIDEO:TDK HVC High Voltage Contactors

High Voltage, Battery Management, Fast Charging, High Voltage Lithium-ion Batteries, etc., content around Relevant Applications (i.e. EVs).

Selecting Gas-Filled Contactors For High-Voltage DC Switchings

Product Brief 2020:High-Voltage Contactors


EV battery thermal management challenges

Understanding battery management systems

HVDC converters, components, and control systems

A consideration of various active and passive cooling technologies for EV batteries.

Learn how a battery management system works, including how it calculates and monitors battery life.

Use of HVDC results in lower transmission losses compared with high-voltage AC but take a careful look at costs.


HVDC transmission system architectures and use cases

Working with higher voltages, Part 1: Voltage boosters

Working with higher voltages, Part 2: Voltage multipliers

Over a century of high voltage DC power transmission

HVDC is often used to connect unsynchronized AC power networks.

Learn techniques for a modest amount of lower voltages boosting and increasing voltage to a higher value.

Designs and considerations change dramatically when output voltage goes from 100 V and into >1000 V range.

Improvements in HVDC technology have generally been driven by advancements in power components.

TDK Corporation is a world leader in electronic solutions for the smart society based in Tokyo, Japan. Built on a foundation of material sciences mastery, TDK welcomes societal transformation by resolutely remaining at the forefront of technological evolution and deliberately “Attracting Tomorrow.” It was established in 1935 to commercialize ferrite, a key material in electronic and magnetic products. TDK's comprehensive, innovation-driven portfolio features passive components such as ceramic, aluminum electrolytic and film capacitors, as well as magnetics, high-frequency, and piezo and protection devices. The product spectrum also includes sensors and sensor systems such as temperature and pressure, magnetic, and MEMS sensors. In addition, TDK provides power supplies and energy devices, magnetic heads and more. These products are marketed under the product brands TDK, EPCOS, InvenSense, Micronas, Tronics and TDK-Lambda. TDK focuses on demanding markets in automotive, industrial and consumer electronics, and information and communication technology. 

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