Power Solutions for Renewable Energy

EMI/EMC Filters for Renewable Energy Systems

Ensuring Clean Power, Grid Compliance, and System Stability

As renewable energy systems scale, from EV charging infrastructure to battery storage systems (BESS) and hydrogen production, power quality and electromagnetic compatibility (EMC) have become critical design challenges. High-frequency switching, high power density, and bidirectional energy flow introduce electrical noise, harmonics, and instability that can impact performance, delay certification, and compromise long-term reliability.

Astrodyne TDI delivers advanced EMI filtering and power transformer solutions that ensure renewable energy systems operate cleanly, efficiently, and in full compliance with global standards.

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The Hidden Challenge in Renewable Energy Systems

While power conversion technologies enable energy generation and storage, they also introduce significant electrical complexity.

High-frequency switching in DC EV chargers generates fast dv/dt and di/dt transitions that create significant conducted and radiated EMI
In hydrogen production, electrolysers rely on stable, high-quality power to operate efficiently and continuously
In energy storage systems, bidirectional power flow creates dynamic EMI profiles during both charge and discharge cycles

In applications like DC fast charging and battery energy storage systems (BESS), multi-stage filtering and custom magnetics are essential to maintain system stability and grid compatibility.

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EMI Filters and Current Transformers for Battery Storage Systems

RP692 DC Power Line Filters

The RP692 is a high-voltage, high-current DC power line filter rated up to 1200V DC, designed to deliver robust EMI attenuation in demanding power applications. Supporting a wide current range from 25 A to 2500 A, this single-stage filter combines flexible termination options and adjustable Y-capacitance to meet specific system requirements.

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Measuring Current Transformer

The Toroid Measuring Current Transformer from Astrodyne TDI is a high-accuracy, compact solution engineered for precise current measurement, metering, and system protection in demanding power environments. Supporting primary currents from 100 A to 1000 A with standardized 1 A or 5 A outputs, it delivers reliable performance across industrial, utility, and data center applications.

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RP359 3-Phase Delta

The RP359 is a compact, high-performance single-stage EMI filter designed for AC power applications requiring reliable noise attenuation and compliance. Rated for currents up to 30 A, it features a space-efficient design with multiple termination options for flexible integration into a variety of systems.

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600V Current Transformer

Astrodyne TDI’s 3-phase Current Transformers provide accurate, low-noise current measurement in a compact, durable design. Supporting a wide current range and high insulation performance, they are built for reliable operation in demanding environments. Ideal for applications such as power distribution, switchgear, motor drives, and energy management systems.

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Wondering How These Solutions Are Implemented? See Real Examples

EMC Considerations for EV Charging & Battery Storage

Learn how to mitigate electromagnetic interference (EMI) and ensure reliable performance in EV charging stations and battery energy storage systems. This on-demand webinar covers key EMC design strategies, including filtering, shielding, grounding, and compliance with global standards—critical for safe and efficient clean energy infrastructure.

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Case Study: Powering the Future of Green Hydrogen

Explore how advanced power solutions enable efficient and reliable hydrogen generation systems. This case study highlights key design challenges, including high-power conversion, system stability, and energy efficiency, and demonstrates how optimized power architectures support the growth of sustainable hydrogen production.

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Astrodyne TDI Solutions

Industrial and renewable energy applications place increasing demands on power systems to manage electrical noise generated by high-speed switching and dynamic power conversion. In DC EV chargers, fast dv/dt and di/dt transitions create significant conducted and radiated EMI, requiring high-voltage, high-current DC EMI filters that can attenuate noise at both the input and output stages. Astrodyne TDI addresses this with advanced multi-stage AC and DC filter solutions, including compact, dual-stage designs capable of operating up to 1500 VDC and supporting currents into the kiloamp range, enabling faster compliance and reliable system performance.

In hydrogen production, electrolysers depend on stable, low-noise power to maintain efficiency and continuous operation. Astrodyne TDI’s EMI filtering solutions help ensure clean power delivery by reducing high-frequency interference from upstream power conversion, protecting sensitive systems and supporting long-term reliability. Similarly, in energy storage systems where bidirectional power flow introduces constantly shifting EMI profiles, these filters provide consistent attenuation across charge and discharge cycles. With a broad portfolio of single, dual, and multi-stage EMI/EMC filters, along with customizable designs, Astrodyne TDI enables engineers to meet stringent global compliance standards while optimizing performance across evolving renewable energy applications.

Why Astrodyne TDI

Specialized expertise in EMI and magnetics (not just power delivery)
Proven performance in high-power renewable applications
Broad portfolio of standard and custom solutions
Deep support for system-level integration
Trusted partner for EV charging, hydrogen generation, and energy storage markets

Enabling the Infrastructure Behind Clean Energy

Power generation is only part of the equation; ensuring that power is clean, stable, and compliant is what enables renewable energy systems to scale globally.

Contact Astrodyne TDI to discuss your renewable energy application—or to explore custom EMI filtering and magnetics solutions.

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Our Certifications

ISO 9001:2015

General Quality Management

AS9100D

Aerospace Quality Standard

ISO 13485:2016

Medical Device Quality

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