The PHD6581 is a custom flat wire inductor designed and delivered for solar energy storage PCS applications. At 120μH inductance and 300A rated current, this product represents ProMagTech's high-current flat wire winding capability for bidirectional DC-DC converter stages in utility-scale and commercial energy storage systems.
Electrical Parameters
| Parameter | Value |
|---|---|
| Part Number | PHD6581 |
| Inductance | 120 μH |
| Rated Current | 300 A |
| Winding Technology | Flat copper wire winding |
| Application | Solar energy storage PCS |
| Topology | Bidirectional DC-DC converter |
| DCR (measured) | 6 mΩ |
| Copper loss calculation example | P = I² × DCR. Final loss depends on confirmed RMS current and measured DCR. |
| Copper loss at rated current | 300A² × 6mΩ = 540W |
Design Notes
At 300A, flat wire winding is a practical technology to reduce DCR without exceeding the winding window. The PHD6581 achieves 6mΩ DCR at 300A rated current using rectangular copper conductor to maximize fill factor in the bobbin window. Equivalent round wire designs in the same window area typically measure 10–15mΩ, producing 1.7–2.5× higher conduction loss at rated current. Core material and air gap are selected to maintain inductance within specification across the project DC bias range.
Application Context
Solar energy storage PCS systems require inductors that maintain stable inductance under large DC bias, survive thermal cycling from charge and discharge cycles, and meet insulation requirements for high-voltage DC bus isolation.
Engineering Review
To request a custom inductor design review based on PCS topology, operating voltage, switching frequency, inductance target and current waveform, use the contact form below. ProMagTech provides initial engineering proposals after parameter review.
Send Parameters for Engineering ReviewFrequently Asked Questions
Can ProMagTech deliver flat wire inductors above 300A?
The PHD6581 at 300A is the highest current reference currently published on the website. Custom designs above 300A are evaluated case by case based on conductor cross-section, core window and thermal structure.
What inductance tolerance is maintained at 300A DC bias?
Inductance under DC bias is determined by core material saturation characteristics and air gap design. For PHD6581, rated-current inductance should be confirmed against the approved sample record and project DC bias curve.
Is the PHD6581 available as a standard catalog product?
No. The PHD6581 is presented as a delivered custom capability reference. 300A-class inductors are custom-designed based on customer electrical parameters, topology, thermal constraints and mechanical envelope.