KEB Automation’s New DC/DC Converter Enhances E-Mobility

As electric vehicles (EVs) become more prevalent, the need for efficient and versatile power solutions grows. One significant challenge is managing the diverse voltage requirements of various auxiliary units within a single vehicle. KEB Automation has added a new DC/DC converter to its e-mobility portfolio to address this. This addition is tailored to the modular inverter system T6 APD, ensuring efficient energy use and supporting the resource-saving drive of electrical auxiliary units in e-buses, agricultural machinery, and last-mile logistics.

KEB’s new DC/DC converter is the latest addition to the company’s electric mobility portfolio. Image used courtesy of KEB Automation

What Is a DC/DC Converter?

DC/DC converters play a crucial role in electronics by converting direct current (DC) voltage to either a higher voltage (in the case of boost converters) or a lower voltage (in the case of buck converters). These converters are primarily used to power sensitive electronic devices. To enhance the reliability of these devices, DC/DC converters can stabilize the output voltage. Voltage fluctuations can lead to malfunctions, data loss, or even permanent damage to electronic equipment. By stabilizing the output voltage, DC/DC converters provide a consistent and safe power supply, ensuring the performance and longevity of the devices they support.

Schematic of KEB’s DC/DC converter integrated as a standalone solution parallel with the T6 APD. Image used courtesy of KEB Automation

The DC/DC converter achieves these conversions using high-frequency switching techniques to step the voltage up or down efficiently. The converter typically consists of components like inductors, capacitors, and switches (transistors). When the switch is turned on and off rapidly, it creates a pulsating DC voltage. The inductor and capacitor then smooth out this pulsating voltage to produce a stable output voltage. The efficiency of DC/DC converters is generally high, making them essential in applications ranging from powering small electronic devices to large industrial machinery.

Integration With the T6 APD Inverter System

KEB’s T6 APD inverter system has long been a reliable solution for powering auxiliary units in EVs. By integrating KEB’s new converter, which complies with E1 standards and has an efficiency of 94%, EV manufacturers can now implement independent DC/DC solutions for applications such as electric steering, cooling fans, power supplies, and electric power take-offs. This advancement is possible because the inverters and converters used throughout EVs are now sourced from a single source rather than multiple components. 

KEB’s new DC/DC converter is designed for use with KEB’s T6 APD modular inverter system. Image used courtesy of KEB Automation

Enhancing Electric Mobility

KEB’s new DC/DC converter is equipped with comprehensive protection features, including safeguards against short circuits, no-load conditions, and overheating. This versatile converter can be configured for parallel connections or stacked arrangements, and it integrates CAN communication for precise control over the output voltage.

It's designed for various applications, making it suitable for sectors such as public transportation, municipal vehicles, and agricultural machinery. Additionally, the converter provides multiple cooling options, such as contact cooling, convection, and liquid cooling, to accommodate the distinct requirements of various environments. The converter can be stored in a temperature range of -40 to 85 °C and operate in a temperature range of -40 to 70 °C, ensuring reliability across diverse conditions.

KEB’s new DC/DC converter is a versatile and efficient solution for managing the diverse voltage requirements of auxiliary units in EVs. Its integration with the T6 APD inverter system and durable design make it an enhancement in the e-mobility sector.