Capabilities
Power Electronics

One drive platform

Bidirectional drives at current ratings up to 1,200 A, with 380 to 480 VAC or 800 VDC input, designed for the most stringent utility requirements.

About our drives

Bidirectional: motor or generator on the same hardware

Active or passive front end, 50 to 60 Hz

Silicon carbide options alongside the IGBT line

800 VDC input for direct DC-bus connection

Active front end, no filter cabinet

Meets IEEE 519 harmonic limits on its own; conventional drives need external filters to get there.

Bidirectional on one platform

The same hardware runs motor and generator duty, delivering grid-quality 380 to 480 V, 50 or 60 Hz power with UL 1741, ATEX, and CE.

DC-bus ready

800 VDC input connects directly to data center DC distribution, storage, and generation; most drives are AC-only.

Speed as capacity control

Output frequencies to 2,000 Hz turn the compressor down to with no hot-gas bypass and no throttling losses.

Drive platform and validation

Drive platform

Current ratings
75 to 1,200 A
Source side
380 to 480 VAC, 50 to 60 Hz, or 800 VDC bus
Machine side
0 to 480 V, frequencies to 2,000 Hz
Topology
IGBT, with silicon carbide options

Validation

Load
Full power electronics load testing
Screening
Thermal cycling to screen out early-life failures
Power quality
Harmonic and grid interface verification
Where
Sapphire factory, Cypress, California, USA

A subsystem OEMs can integrate

The drive is available to HVAC OEMs as a standalone subsystem with 380 to 480 VAC or 800 VDC input, scaling from a single compressor to a full chiller plant.

More about drives

What does the drive do in generating mode?

It converts the high-frequency output of the permanent magnet generator into grid-quality power.

What does the drive do in motoring mode?

It supplies the variable-speed power that spins the compressor, controlling speed and load precisely across the operating envelope.

Does IEEE 519 compliance require external filters?

No. The active front-end design holds harmonics within IEEE 519 limits on its own, which removes the filter cabinet from the installation.

Can we integrate the drive into our own chiller line?

Yes. The drive is supplied as a standalone subsystem, with control firmware matched to your machine and packaging options for your enclosure and cooling architecture.

Where are the drives built?

At Sapphire's factory in Cypress, California. Every drive is assembled, load tested, and thermally screened there before shipment.