Reaching New Efficiency Milestones in Low‐Speed Wind Energy Harvesting via Noncontact Stackable Ion‐Gate‐Based Static Discharge Generator
Journal
Advanced Energy Materials
ISSN
1614-6832
1614-6840
Date Issued
2025
Author(s)
Seh‐Hoon Chung
Jiwoong Hur
Seokjin Kim
Kyunghwan Cha
Hanwook Ryu
Dongseob Kim
Jinkee Hong
Jihoon Chung
Sangmin Lee
Abstract
Wind energy harvesting is attracting increasing interest owing to the growing global electric energy production. However, energy generation using existing wind turbines is deficient compared to the potential of wind energy owing to less-efficient wind turbines operating at low wind speeds. Therefore, an ion-gate-based static discharge generator (ISDG) with a charge suppliance turbine (CST) for efficient low-speed wind energy harvesting is introduced. CST comprises a charge suppliance rotator (CSR) and Savonius wind blades, where the CSR generates electrical charges for inducing Townsend discharge at the ion gate; thus, the current output gets enhanced owing to an avalanche effect. Additionally, the CSR in the CST can be operated with a stacked structure and noncontact movement, allowing the device to generate high power with a low input. Thus, an ISDG comprising CST can generate electricity with wind blowing at 3 and 4 m s−1 at high efficiencies of 21.9% and 32.8%, respectively.
Subjects
avalanche effect
high efficiency
low-speed wind
Townsend discharge
wind energy harvester
SDGs
Publisher
Wiley
Type
journal article