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Toroid Core | Silicon Steel Construction | Solar Inverters, UPS & Aerospace Power Systems
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Toroid Core | Silicon Steel Construction | Solar Inverters, UPS & Aerospace Power Systems

Toroid Core - Continuous Silicon Steel Strip Winding for High-Efficiency Energy Conversion in Renewable Energy, Industrial UPS, and Avionics Applications

The Toroid Core utilizes grain-oriented silicon steel strip (0.15–0.30mm thickness, 3.0–3.8% Si content) wound into a seamless annular geometry. This continuous magnetic path eliminates air gaps inherent in laminated cores, achieving flux uniformity >98% while reducing audible noise by 15dB. Optimized for medium-to-high frequency operation (400Hz–5kHz), it delivers superior volumetric efficiency in compact power systems.

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    Renewable Inverters w(1)

    Zero-Joint Magnetic Circuit

    01

    Spiral-wound construction eradicates interfacial losses at corners, cutting excitation power by 40% vs. rectangular cores. Radial grain alignment enhances permeability (μ_max: 40k–100k) along the rotational flux path.
    Renewable Inverters (2)

    Ultra-Low Electromagnetic Noise

    01

    Vibration damping: <0.2 ppm magnetostriction under 1.7T excitation (IEC 60404-8 compliant). Symmetric field containment reduces radiated EMI by 25dB at 10kHz.
    Renewable Inverters (1)

    High Power Density

    Core loss: 1.8–5.2W/kg @ 1kHz/0.8T (domain-refined steel grade). 360° winding space utilization increases copper fill factor by 30% over block cores.

    Environmental Resilience

    01

    Vacuum-impregnated insulation (Class 200°C) withstands thermal cycling (-55°C to +210°C). Corrosion-resistant phosphate coating for marine/military environments (MIL-STD-810G).

    Common Applications

    • Renewable Inverters (3)

    Renewable Energy Infrastructure

    Solar microinverters: Achieves 98.5% CEC efficiency with <0.5% THD at 20kHz switching.
    Wind turbine pitch control: Immune to vibration-induced core saturation (IEC 61400-25).

    Critical Power Systems

    Double-conversion UPS: Enables 96% efficiency at 50% load with 3:1 overload capability.
    Medical isolation transformers: Meets IEC 60601-1 leakage current requirements (<10μA).

    Critical Power Systems

    Double-conversion UPS: Enables 96% efficiency at 50% load with 3:1 overload capability.
    Medical isolation transformers: Meets IEC 60601-1 leakage current requirements (<10μA).

    Consumer Electronics

    Wireless Charging Systems: Enables compact, high - efficiency inductive coils in smartphones and wearables, improving charging speed and device portability.
    Audio Equipment: Reduces electromagnetic interference in audio transformers, enhancing sound quality in high - end speakers and headphones.

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