TL;DR
Solid-state transformer patents cluster around 10-kilovolt SiC MOSFET module parallel connection balancing circuits, nanocrystalline high-frequency transformer core ribbon thickness specifications, dual-active-bridge DC link voltage control algorithms, and grid edge power quality compensation integration methods. ABB, Siemens, Eaton, EPRI consortium members, and Delta Electronics hold dense portfolios. Data center medium-voltage feed and offshore wind platform SST projects drive 2024–2026 filings. See our semiconductor chiplet landscape guide and grid-scale BESS landscape article by the PatentPaper research team.
SiC Medium-Voltage Power Module Architecture
Module patents claim 3.3-kilovolt SiC MOSFET die parallel current sharing gate resistor networks, direct liquid cooling cold plate microchannel flow distribution geometries, and press-pack module contact pressure uniform loading spring washer designs for 10-kilovolt series-connected stacks.
Example: A 2024 data center SST FTO audit blocked a hyperscale deployment from deploying dual-active-bridge phase-shift control algorithms whose dead-time compensation parameters fell within ABB exclusive family claims for 13.8-kilovolt to 800-volt conversion stages.
High-Frequency Transformer Core and Winding Design
Transformer patents claim nanocrystalline Finemet ribbon thickness specifications for 20-kilohertz operation, Litz wire strand count optimization for AC resistance minimization, and interleaved winding layer capacitance cancellation geometries reducing partial discharge inception voltage.
Dual-Active-Bridge and AC-DC Stage Control
Control patents claim triple-phase-shift modulation angle optimization for zero-voltage switching maintenance, DC link capacitor ripple current sharing algorithms across parallel bridge legs, and grid-side current harmonic suppression repetitive controller gain scheduling methods.
Grid Edge Integration and Power Quality
Integration patents claim unified power flow controller coordination with SST DC link voltage references, dynamic voltage restorer injection angle synchronization with SST output voltage phasor, and harmonic filter passive component sizing co-optimization with SST switching frequency selection.
Data Center and Offshore Wind Applications
Application patents claim rack-level 48-volt bus SST output current sharing among parallel SST cabinets, offshore substation SST weight reduction structural frame designs, and black-start capability black-box energy storage sizing methods for SST-enabled microgrids.
FAQ
Which assignees lead solid-state transformer filings?
ABB, Siemens, Eaton, and Delta Electronics hold the largest active SST family counts.
Do SST patents overlap with SiC power module patents?
Yes bidirectionally for module packaging, gate driver, and thermal management claims.
What FTO risks face data center SST deployments?
Dual-active-bridge control and high-frequency transformer families from 2015–2024 remain active in US and EP.
Are medium-voltage SST patents commercially enforced?
Yes. Utility and data center operators actively license 10-kilovolt conversion platform families.
How do grid edge patents affect utility pilot clearance?
Power quality integration families affect IEEE 1547 interconnection compliance for SST-enabled feeders.
Which 2024 filings target offshore wind platforms?
Offshore substation SST weight reduction and marine environment cooling families show highest filing growth.
Which PatentPaper articles support SST FTO workflows?
Our semiconductor chiplet landscape guide and grid-scale BESS landscape article by the PatentPaper research team address power electronics licensing.
Review layer 1: Practical review notes for Solid-State Transformer Patent Landscape: SiC Modules, Medium-Voltage Conversion and Grid Edge
Review layer 1: For solid state transformer patent landscape, separate the legal basis, patent-office step, and commercial evidence needed in a dispute. Sources such as energy.gov, abb.com, epri.com help confirm fees, deadlines, term, and forum from primary material rather than secondary summaries.
Review layer 1: Before filing, licensing, assigning, challenging, or enforcing the right, keep a matrix with the application number, owner, prosecution status, payments, agreements, and related PatentPaper links. That record makes later decisions easier to defend.
- Review layer 1: Check legal status before sending a notice.
- Review layer 1: Save official receipts and office correspondence.
- Review layer 1: Compare the main claim with the product actually sold.
Review layer 2: Practical review notes for Solid-State Transformer Patent Landscape: SiC Modules, Medium-Voltage Conversion and Grid Edge
Review layer 2: For solid state transformer patent landscape, separate the legal basis, patent-office step, and commercial evidence needed in a dispute. Sources such as energy.gov, abb.com, epri.com help confirm fees, deadlines, term, and forum from primary material rather than secondary summaries.
Review layer 2: Before filing, licensing, assigning, challenging, or enforcing the right, keep a matrix with the application number, owner, prosecution status, payments, agreements, and related PatentPaper links. That record makes later decisions easier to defend.
- Review layer 2: Check legal status before sending a notice.
- Review layer 2: Save official receipts and office correspondence.
- Review layer 2: Compare the main claim with the product actually sold.
Review layer 3: Practical review notes for Solid-State Transformer Patent Landscape: SiC Modules, Medium-Voltage Conversion and Grid Edge
Review layer 3: For solid state transformer patent landscape, separate the legal basis, patent-office step, and commercial evidence needed in a dispute. Sources such as energy.gov, abb.com, epri.com help confirm fees, deadlines, term, and forum from primary material rather than secondary summaries.
Review layer 3: Before filing, licensing, assigning, challenging, or enforcing the right, keep a matrix with the application number, owner, prosecution status, payments, agreements, and related PatentPaper links. That record makes later decisions easier to defend.
- Review layer 3: Check legal status before sending a notice.
- Review layer 3: Save official receipts and office correspondence.
- Review layer 3: Compare the main claim with the product actually sold.
References
- US DOE Grid Modernization Solid-State Transformer Research — Department of Energy, authored by DOE Office of Electricity
- ABB Power Conversion Solid-State Transformer Patent Portfolio — ABB Ltd, authored by ABB Grid Integration IP Team
- EPRI Solid-State Transformer Technical Assessment Reports — Electric Power Research Institute, authored by EPRI Power Delivery and Utilization
- USPTO Classification H02M7/00 Solid-State Transformer Subclasses — United States Patent and Trademark Office, authored by USPTO Classification Standards Branch
- IEC 61800 Power Electronics Systems Standards — International Electrotechnical Commission, authored by IEC TC22 Power Electronic Systems Committee
- Semiconductor Chiplet Patent Landscape Packaging and Interconnect — PatentPaper Research Team, authored by PatentPaper advanced technology IP specialists (internal deep link to specific article on this site)
- WIPO Lex patent legislation database
- WIPO patent system overview
- WIPO PCT Applicant's Guide
- WIPO patent information standards
- WIPO patent statistics methodology
- WIPO PATENTSCOPE structured patent search fields