Envision Energy said on Monday its next-generation two-bladed onshore wind turbine has completed more than 500 days of field operation with a 99.3% availability rate, marking a milestone for the company’s modular wind power technology.
The prototype, built on Envision’s Model X platform, was tested at the firm’s smart wind power verification centre and achieved over 3,000 equivalent full-load hours per year. According to the company, its performance is comparable to traditional three-blade turbines deployed at the same location.
Envision said the design incorporates a high-speed doubly-fed induction generator (DFIG) and a modular structure intended to improve transportability and cost efficiency. The company also reported a mean time between trips (MTBT) of 2,444 hours.
“By overcoming key technical challenges such as excessive system vibration and load imbalance – barriers that have long held back two-blade designs – Envision has once again redefined wind power innovation,” said Lou Yimin, senior vice president and chief product officer at Envision Energy.
The turbine was tested using a multi-level validation process, including what the company described as the industry’s first multi-degree-of-freedom full-system loading test rig. Envision said it created dozens of specific operating conditions tailored to the characteristics of two-blade designs to assess commercial viability.
The company began exploring two-blade turbine technology in 2012 with the development of a 3.6-megawatt offshore prototype at its Global Innovation Center in Denmark. The latest design targets a range of green energy applications and aims to support more flexible deployment in varied onshore environments.
Envision said the milestone supports its long-term strategy to expand wind innovation and contribute to the global energy transition.
