Preventing Space Charge Accumulation by Incorporating Electrets

Space charge accumulates near electrodes in insulating materials under high voltage direct current. Electric stress created by accumulation distorts electric field, reduces the remaining useful life of materials, and decreases partial discharge inception that are critical for ensuring dielectric integrity power applications. In this article, a novel approach mitigates space using electrets is presented. Electrets used to reduce fields cause injection materials. The validity preventing numerically experimentally demonstrated. Bipolar transport model developed simulate silicone rubber without with incorporation electret. experiments performed confirm numerical results. results show can effectively mitigate also incorrect use electret such as reversing polarity lead more substantial accumulation.