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Silicon carbide (SiC) has quietly moved from electric vehicles and solar inverters into the world of low-voltage AC drives. A new analysis by Renee Ju of Interact Analysis, published in Drives & Controls (August 2026), maps where the technology stands today — and names SmartD’s Clean Power VFD as the representative example of the “full-SiC” approach. (Read the original analysis.)

Here’s our read of what the report says, and what it means if you actually run motors for a living.

Two roads into silicon carbide

The report frames the market’s shift to SiC as two distinct engineering strategies — and is careful to say neither is inherently “better,” just tuned to different goals:

• Hybrid SiC keeps IGBTs as the main switches and swaps in SiC diodes. It’s the cost-controlled, incremental path — better efficiency and power density without a big price jump. Interact Analysis cites Inovance’s MD520HS as an example.
• Full SiC uses silicon carbide for both the switches and the diodes. It pushes losses lower and power density higher, at a real cost premium. The report’s representative example of this approach is SmartD, whose Clean Power VFD adopts a full-SiC architecture aimed at power-quality-sensitive sites such as data centres and water treatment.

Where the big names are

The report’s most telling detail isn’t about us — it’s about the incumbents. According to Interact Analysis, the largest global drive makers are taking a “cautious and measured” approach: ABB has not yet introduced a mass-produced series with SiC as a core selling point; Siemens has not released a commercial SiC-based low-voltage AC drive to date; Danfoss has SiC power modules but no standard SiC low-voltage AC drive yet.

The takeaway we’d draw — and we’ll be precise about it — is not that SiC will overturn the market tomorrow. The analyst is explicit that IGBTs will keep dominating for the foreseeable future. It’s that the design boundary is moving, and competition is shifting toward power density, system architecture, power quality and thermal management. Those happen to be exactly the axes a full-SiC drive competes on.

What this means if you run critical motors

Strip away the semiconductor talk and the practical question is simple: what does the motor actually receive? A full-SiC architecture is what lets the Clean Power VFD deliver a pure, filterless sine wave to the motor instead of the harsh PWM pulses of a conventional drive. In the field, that translates to:

• Cleaner power, less stress — a real sine wave reduces the electrical stress on windings and bearings that drives premature failures.
• Fewer parts to fail — in many applications you can drop the external output filters, shaft grounding rings and insulated bearings, in a smaller footprint.
• Harmonics kept in check — an integrated Active Front End helps hold harmonics below 5% THDi in line with IEEE 519 (evaluated at the drive).

That’s why the report positions full-SiC where it does — power-quality-sensitive applications like data centres and water and wastewater — the same places a nuisance trip or a failed pump is most expensive.

The honest part: yes, it’s a premium

We won’t skip the caveat the analyst raises: a full-SiC drive carries a cost premium over a conventional IGBT drive. That’s true. The way to weigh it is total cost of ownership, not sticker price — lower energy use (slowing a fan or pump even a few hertz saves real money under the affinity law), longer motor life, and the external filters, cabinet space and failure points you don’t buy. (See a worked savings example.)

The bottom line

Independent analysts now describe full-SiC as one of the two real paths forward for low-voltage drives — and point to SmartD to illustrate it, while the biggest names are still evaluating SiC in the lab. We’re not claiming the market is won. We’re saying the drive you can buy today already lives on the architecture the rest of the industry is moving toward.

Want to see what a full-SiC, filterless drive does on your motors? Talk to an engineer.

Source: Renee Ju, Interact Analysis — “Silicon carbide: the future for low-voltage drives?”, Drives & Controls, 3 August 2026. Read it here.

FAQ

Is silicon carbide the future for low-voltage drives?

Not a wholesale replacement any time soon — analysts at Interact Analysis expect IGBTs to keep dominating for years. But SiC is expanding what’s possible on power density, power quality and efficiency, and is already shipping in niche, high-demand applications.

What is a full-SiC VFD?

A variable-frequency drive that uses silicon carbide devices for both its switching elements and its diodes (not just the diodes, as in “hybrid SiC”). It lowers losses and raises power density, at a higher cost. SmartD’s Clean Power VFD uses a full-SiC architecture.

Who makes a full-SiC low-voltage drive today?

In its August 2026 analysis, Interact Analysis names SmartD Technologies as the representative full-SiC example, targeting power-quality-sensitive applications such as data centres and water treatment.

Does a full-SiC drive cost more?

Yes — there’s a cost premium versus a conventional IGBT drive. It’s usually justified on total cost of ownership: energy savings, longer motor life, and eliminated external filters and cabinet space.

Which applications benefit most?

Power-quality-sensitive and reliability-critical sites: data centres, water and wastewater, and long-cable or retrofit situations where clean power and a compact, filterless footprint matter most.