Sinovel Wind Group Co Ltd is facing criminal, civil and commercial complaints after American Superconductor Corporation (AMSC) filed suit alleging illegal use of its intellectual property. AMSC alleges that Sinovel illegally obtained and used core components of its proprietary power and control systems in order to upgrade 1.5-MW wind turbines to meet proposed Chinese grid codes, and to potentially allow for the use of core electrical components from other manufacturers, including a company founded by Sinovel.