Nichicon’s high-temperature/high voltage capacitor model for EV AC-DC inverter modules to be displayed at SABIC’s booth 

• SABIC is featuring at PCIM Europe 2024 the first application to use its ELCRES™ HTV150A dielectric film.
• SABIC customer Nichicon Corporation has developed new high-temperature/high-voltage film capacitors for AC-DC inverter modules used in electric vehicles.
• The SABIC film withstands temperatures up to 150°C and up to 1,000V operating voltage, helping the industry advance to a new generation of capacitor technology.

SABIC will highlight at PCIM Europe 2024 (in Hall 7, Booth 140) the first commercial application of its high-heat ELCRES™ HTV150A dielectric film. Japan’s Nichicon Corporation used this ultra-thin specialty film to develop high-temperature, high-voltage, commercial-quality capacitors for AC-DC traction inverter modules in electric vehicles. This technological breakthrough addresses industry demand for advanced film capacitors which can enable more-efficient AC-DC power modules.

Nichicon’s high heat capacitor elements before casing and sealing are made from SABIC’s ELCRES™ HTV150A dielectric film.

In contrast to traditional film solutions, single capacitors made with ELCRES™ HTV150A dielectric films can operate at high temperatures (up to 150°C) and high voltages (up to 1,000 volts) with stable performance. Working with SABIC, Nichicon implemented and successfully tested the film in its capacitor designs to offer candidate components to AC-DC inverter module manufacturers. A prototype capacitor will be shown at the SABIC booth. In addition, SABIC will give three presentations related to the dielectric film.

“We are proud to be the first to develop a film capacitor that can withstand very high temperatures and voltages,” said Mr. Takashi Mori, general manager, XEV Global Design Center, Nichicon. “Our new capacitors made with SABIC’s dielectric film can help the industry realize the full benefits of silicon carbide and gallium nitride MOSFETs when used in AC-DC inverters for electric vehicles. We are pleased to collaborate with SABIC to combine our engineering leadership with SABIC’s renowned materials innovation.”

“We engineered ELCRES HTV150A films to help customers move to the latest generation of capacitor technology, and we congratulate Nichicon on taking the lead in this endeavor,” said Scott Fisher, general manager, Technology, SABIC Polymers, Specialties BU. “Nichicon’s new film capacitors offer the potential to improve electric vehicle range, charging speed and performance, and to allow compact, lighter-weight module designs by reducing the need for active cooling. We look forward to continuing our collaboration with Nichicon to benefit the power electronics industry.”

Nichicon’s high heat capacitor elements are made from SABIC’s ELCRES™ HTV150A dielectric film.

The development project for Nichicon’s film capacitors involved the segmented metallization of the ELCRES HTV150A film to help achieve 900-1000V. The film’s stable, inherent dielectric properties enable the capacitors to operate at 150°C. This work included 2,000 hours of reliability life testing at 150°C, and 3,600 hours at 130°C.

To describe various aspects of the film and the capacitor project, Dr. Adel Bastawros, Chief Scientist, SABIC Polymers, Specialties BU, will give three presentations during PCIM Europe:

• “Reliability of HTV150A High Temperature and High Voltage films for DC-Link Capacitors,” Tuesday, June 11, 3:25-3:45 p.m. Central European Time (CET), (E-Mobility and Energy Storage Stage)
• “Film Capacitors for High Temperature AC-DC Inverter Applications,” Wednesday, June 12, 9:50 – 10:10 a.m. CET, (Conference presentation, Passive Components Session, Stage: Mailand)
• “Damp Heat Behavior of High Heat Capacitors for Applications in Electric Vehicles,” Wednesday, June 12, 1:00-2:30 p.m. (Conference poster presentation, Reliability Testing Session, Hall 10.1)

ELCRES HTV150A dielectric films are the first in the industry to provide stable performance at operating temperatures of -40°C to 150°C and frequencies up to 100 kHz, while offering stable capacitance, high insulation resistance and good dielectric performance. The films address the critical performance gap experienced by traditional film solutions above 105°C. Capacitors built with 3 μm and 5 μm metalized ELCRES HTV150A films pass standard electrical and life tests at 150°C for 2,000 hours, and damp heat aging at 85°C and 85 percent relative humidity for 1,000 hours, with low capacitance change and stable insulation resistance. Other key film properties include high voltage breakdown strength over the full temperature range, good self-healing, and excellent adhesion to aluminum and zinc during metallization.

PCIM Europe will take place in Nuremberg, Germany, June 11-13, 2024.