Amperesand

Company

Amperesand is a company involved in the development and discussion of solid-state transformer technology.

Sector: power-electronics
HQ: US
Stories: 27 on MGRID.org

Vendor profile

What they do

Amperesand is a solid-state transformer startup developing commercial SST products for utility and data-center power applications.

Solid-State TransformerMedium-Voltage Power Conversion

What they’re looking for

Utilities, data center operators, and grid innovators for solid-state transformer pilot deployments

What they buy

Wide-bandgap semiconductors, high-frequency magnetics, and power module packaging

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Stories about Amperesand (27)

Solid-State Transformer Industry Reality Check: What Patents

May 27, 2026 · Analysis

10 sources A May 2026 audit found fewer than 10 commercially deployed SSTs in global revenue service, while dozens of announced projects remain years from deployment.
The MGRID Solid-State Transformer Coverage: A Comprehensive Index

May 27, 2026 · Analysis

Index of ~100 MGRID articles published May 2026 covering SST origins, manufacturers, deployments, federal programs, technology foundations, and applications.
The 1968 GE Patent That Founded Solid-State Transformer Technology

May 27, 2026 · Power Electronics

4 sources US Patent 3,517,300 filed at GE Schenectady in 1968 by William McMurray. Original motivation: 16.66 Hz European locomotive traction transformer weight reduction
FREEDM Systems Center at NCSU: The 2008 NSF Center That Turned

May 26, 2026 · Power Electronics

4 sources NSF Generation-III Engineering Research Center launched 2008 at NCSU. Y10 SST program led by Dr. Subhashish Bhattacharya targets 7.2 kVAC / 400 VDC bidirectional
Why the Iron-Core Transformer Has Outlasted Every Replacement

May 24, 2026 · Power Electronics

4 sources Iron-core transformer technology, unchanged since 1886, has outlasted every solid-state challenger by offering single-step voltage conversion with near-zero failure risk.
Why Single-Stage AC-AC Solid-State Transformers Are the Holy Grail —

May 23, 2026 · Harmonics (THD)

4 sources Single-stage AC-AC solid-state transformers remain lab-only; every commercial SST shipped in 2026 uses the two-stage AC-DC-AC topology instead.
ABB’s 2011 PETT on Swiss Federal Railways Was the First Solid-State Transformer in Revenue Rail Service

May 23, 2026 · News

3 sources ABB PETT pilot on SBB Ee 933 shunting locomotive, mid-2011 deployment. Swiss Federal Office for Transport certification end of 2011
The Modern Solid-State Transformer Patent Landscape: Eaton

May 14, 2026 · Analysis

5 sources Eaton's $86M Resilient Power acquisition in Aug 2025 reshaped the SST patent landscape. ABB, Hitachi Energy, and startups hold remaining key portfolios.
The DC-Link Capacitor Supply Chain Under the Solid-State Transformer Industry: TDK, Vishay, KEMET, EPCOS, and the Metallized-Polypropylene-Film Bottleneck

May 13, 2026 · Analysis

4 sources TDK, Vishay, KEMET, and Cornell Dubilier supply the MPPF capacitors every SST requires. European manufacturing dominance creates a US deployment supply-chain bottleneck.
Virginia Tech CPES Is the Second-Most-Important US Academic

May 2, 2026 · Power Electronics

4 sources Virginia Tech CPES annual research expenditures $6-7M across power-electronics scope. 400 kW SST extremely fast EV charger in cascaded MV-to-380VDC configuration

Stories about Amperesand (27)

Solid-State Transformer Industry Reality Check: What Patents

The MGRID Solid-State Transformer Coverage: A Comprehensive Index

The 1968 GE Patent That Founded Solid-State Transformer Technology

FREEDM Systems Center at NCSU: The 2008 NSF Center That Turned

Why the Iron-Core Transformer Has Outlasted Every Replacement

Why Single-Stage AC-AC Solid-State Transformers Are the Holy Grail —

ABB’s 2011 PETT on Swiss Federal Railways Was the First Solid-State Transformer in Revenue Rail Service

The Modern Solid-State Transformer Patent Landscape: Eaton

The DC-Link Capacitor Supply Chain Under the Solid-State Transformer Industry: TDK, Vishay, KEMET, EPCOS, and the Metallized-Polypropylene-Film Bottleneck

Virginia Tech CPES Is the Second-Most-Important US Academic