He Yan

TL;DR: In this paper, an output current wave shape control method for a tri-phase active power filter (APF) is presented, where a T-shaped filter and a current wave-shape controller are adopted to control the output current.

TL;DR: In this paper, a highvoltage, super-voltage and heavy current breaker is formed by combining intelligent optical vacuum breaker modules (21) with phase selection function in series and/or parallel connection.

Abstract: The invention relates to a wind and solar hybrid generating system based on a Z source, belonging to the field of new energy generation and aiming to provide users with a safe and stable power sourceby utilizing wind energy and solar energy common in nature The invention adopts a pressure-boosting device based on a Z source circuit structure and a tracking control strategy based on DSP to achieve a variable-step perturbation observation method The wind and solar hybrid generating system based on the Z source comprises a charging and discharging controller, an energy-storing accumulator andan inventor A wind and solar hybrid controller converts wind energy captured by a wind-driven generator into a direct current by utilizing a rectifier; and the energy-storing device (accumulator) ischarged by the direct current and solar energy captured by a solar panel; the inventor releases electric energy stored in the accumulator and stably outputs an alternating voltage of 220V by a certaincircuit and a control method to provide for load use The system has simple structure and less hardware and effectively improves the working efficiency

TL;DR: In this article, the authors presented a detecting system and method for a partial discharge detecting sensor of GIS, which consists of steps as follows: detecting and verifying the GIS partial discharge sensor; detecting a GIS sensor UHF (ultra high frequency) sensor; and verifying and verifying a sensor positioning system.

TL;DR: In this article, an intelligent on-line monitoring system of a high-voltage switch, consisting of a sensor unit, data acquisition unit, a central processing unit, and a communication unit which are connected in sequence through a backboard bus, is presented.