Fusion

Custom high-energy discharge capacitors designed with optimal electrical and mechanical characteristics to meet the needs of the most challenging applications.

The Knowles Advantage

Knowles provides high-energy discharge and pulse capacitors critical to fusion power systems. Our custom designs through our Cornell Dubilier brand deliver megajoule-scale energy storage and nanosecond-level discharge for plasma confinement magnets and diagnostic systems, engineered for radiation resilience and repeatable performance across thousands of cycles. By combining advanced dielectrics, modular architectures, and decades of pulsed power expertise, Knowles ensures fusion developers have the reliable, high-spec components needed to accelerate commercialization.

Knowles components for fusion can be found in:

  • High-Energy Discharge Capacitors: Custom designs for rapid, high-energy release to enable plasma heating and ignition.
  • Pulse Forming Networks (PFNs): Specialized circuits that precisely shape high-voltage pulses for controlled energy delivery.
  • Marx Generators: High-voltage pulse generators that power fusion experiments by rapidly discharging energy into plasma compression systems.
  • NanoPlex-Based Capacitors: Next-generation capacitors using advanced metamaterials to deliver 2-4x higher energy density for powering lasers and magnets in fusion reactors.
  • Magnetic Pulse Compression Systems: Core assemblies that compress electrical pulses into ultra-fast, high-current bursts for fusion ignition.

Powering the Future of Fusion Technology

High-Energy Components for Fusion

Knowles provides advanced components for high-power, high-reliability fusion applications.

  • High-Energy Capacitors for Pulsed Power: Built for massive energy storage and rapid discharge. 
  • Advanced Dielectrics: Polymer and ceramic materials deliver higher efficiency and energy density.
  • Custom Assemblies: Modular and bespoke designs for fusion systems and pilot plants.
  • Collaborative Engineering: Supporting magnets, inductors, and pulsed power wit research partners.
  • Proven Reliability: Designed to perform in extreme voltage, magnetic and thermal conditions.

Educational Resources

Blogs
Whitepapers
Specifying Capacitors for High-Energy Pulse Applications

Specifying Capacitors for High-Energy Pulse Applications

Energy storage capacitor banks supply pulsed power in all manner of high-current applications, including shockless compression and fusion.
View Article for Specifying Capacitors for High-Energy Pulse Applications
View Article for Specifying Capacitors for High-Energy Pulse Applications
Understanding Energy Density and Power Density in Capacitor Applications

Understanding Energy Density and Power Density in Capacitor Applications

Energy density and power density are essential, yet unique, metrics. Understanding the differences between them is crucial for designing efficient energy storage solutions. This blog explores those differences and their impact on capacitor performance.
View Article for Understanding Energy Density and Power Density in Capacitor Applications
View Article for Understanding Energy Density and Power Density in Capacitor Applications
The Electrical Engineer’s Guide to Safety Capacitors

How Capacitors Drive Energy Innovation at Every Stage

As energy systems evolve to support electrification, renewables, and digital infrastructure, the demands on power electronics are intensifying.
View Article for How Capacitors Drive Energy Innovation at Every Stage
View Article for How Capacitors Drive Energy Innovation at Every Stage
Powering the Energy Transition From The Inside Out

Powering the Energy Transition from the Inside Out

By 2050, electricity is expected to more than double its share of final energy consumption, jumping from 23 percent to 52 percent. As a result, the way the world generates, transmits, stores, and uses energy is changing.
View Article for Powering the Energy Transition from the Inside Out
View Article for Powering the Energy Transition from the Inside Out
How Pulse Forming Networks Shape High Energy Pulses

How Pulse Forming Networks Shape High Energy Pulses

From high-power radar to advanced medical imaging, many cutting-edge technologies rely on precisely controlled high-energy pulses. However, generating a pulse that delivers consistent power without distortion isn’t as simple as discharging a capacitor. These systems rely on Pulse Forming Networks (PFNs) to shape and control high-energy pulses.
View Article for How Pulse Forming Networks Shape High Energy Pulses
View Article for How Pulse Forming Networks Shape High Energy Pulses
How High-Energy Capacitor Banks Drive Plasma Research

How High-Energy Capacitor Banks Drive Plasma Research

From the National Ignition Facility (NIF) in California to the High Magnetic Field Facility in Dresden, high-energy capacitor banks are at the heart of high-power pulsed energy experiments worldwide. These systems provide a massive amount of fast-discharge energy for experiments that push the boundaries of science and technology.
View Article for How High-Energy Capacitor Banks Drive Plasma Research
View Article for How High-Energy Capacitor Banks Drive Plasma Research

Power Conversion Capacitors for Harsh Environments

Examine how growing outdoor power conversion applications are increasing performance demands.
View Resource for Power Conversion Capacitors for Harsh Environments
View Resource for Power Conversion Capacitors for Harsh Environments

Product Documentation

Custom DC Link Capacitors

Custom DC link and filtering capacitors deliver high ripple current performance, low inductance, and proven reliability.
View Resource for Custom DC Link Capacitors
View Resource for Custom DC Link Capacitors

Pulse Power Capacitor Technology

Knowles’ Cornell Dubilier custom pulse power capacitors deliver proven, reliable performance.
View Resource for Pulse Power Capacitor Technology
View Resource for Pulse Power Capacitor Technology

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