A Mini-Prototype YBCO SMES Using Combustion Chemical Vapor Deposition Technique

Period of Performance: 05/01/2000 - 10/01/2000


Phase 1 SBIR

Recipient Firm

MicroCoating Technologies (formerly CCVD)
5315 Peachtree Industrial Blvd.
Atlanta, GA 30341
Principal Investigator


MicroCoating Technologies Inc., (MCT) proposes to utilize its patented Combustion Chemical Vapor Deposition (CCVD) process for investigation of a mini-prototype YBCO SMES (Superconducting Magnet Energy Storage). The idea presented here is to use the next generation HTS wire technology to investigate the feasibility of a portable mini-sized SMES. It could be operated at liquid nitrogen with good performance, which is intended for military application. A closed-loop style coil (in persistent superconducting current operation mode), which can provide more mobility for military use, will also be investigated. The experiences accumulated during the project will benefit the further scale-up to large YBCO SMES at liquid nitrogen temperature employed to limit power surges in electrical networks for both military and civil power stations. MCT has demonstrated high quality buffer layer coating on textured nickel tape (RABiTS) provided by ORNL. MCT is exploring its technology to fabricate the next generation HTS wire with long length, which will be used for this project. MCT is proposing to build a YBCO coil with its possible maximum length in Phase I and test its performance, which will provide a few key parameters for its design for a mini-prototype SMES in Phase II. Our key collaborator is Oxford Superconducting Technology (Dr. Kenneth R. Marken). SMES devices provide a perfect solution when the line quality is important. The SMES overcomes problems like sags, spikes, voltage and frequency instability exhibiting many advantages over the conventional methods. For high-tech industry, line instability may cause severe damage and loss of time and money. It is expected that power facilities will purchase SMES devices and place them.