Here, a hierarchical porous NiO film/ITO glass bifunctional electrode has been prepared successfully via growing MOF-74 in situ on ITO, which shows outstanding cycle reversibility, excellent capacitance, and high coloration efficiency.

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This paper designs a sine wave inverter that converts 12V DC into 220V/50Hz AC. In the DC/DC converter circuit, the push-pull circuit is used for boosting. The pulse width modulator SG3525 control chip is selected. The MOS tube provides the drive signal modulation wave, first boosts the 12V DC voltage to 400V; then designs the full-bridge DC/AC converter circuit, selects the control circuit based on the SPWM dedicated chip EG8010 and the drive circuit based on the IR2110S driver chip. Finally, according to the hardware circuit and parameter design, the simulation of the design scheme is carried out, and the feasibility of the design scheme of the sine wave inverter is verified.

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Abstract. The circuit breakers play a important role in control and protect the power system and the vacuum circuit breaker has been widely used in the field of medium voltage with its excellent opening performance. Virtual prototyping technology is also became more and more popular in design and optimization of the vacuum circuit breaker.In this paper, the electromagnetic simulation software Ansoft Maxwell is used to analyze the electric repulsion of the circuit breaker in the case of open the rated short circuit breaking current. The 3D model that was built by CREO is imported into ADAMS .Then constraints, contact force, and the electric repulsion force that was analysezed in Ansoft Maxwell is added into the 3D model. Therefore, we can carry on the multi-body dynamics simulation to the 3D model. Then We can get the opening performance of the vacuum circuit breaker in the condition of open circuit rated short circuit breaking current. The simulation results show that the circuit breaker can still meet the performance requirements in the condition of open circuit rated short circuit breaking current.