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Supercapacitor, as a new type of energy storage device, has broad application prospect in the power system and others. It is very significant to establish an accurate model to reflect the actual job characteristics for supercapacitor reasonable use, performance optimization and system simulation. This article summarizes all kinds of supercapacitor model, points out the characteristics of the existing...
As for permanent magnet synchronous motor, permanent magnet flux is constant, this article analyzes the d-q axis PMSM model, applies voltage space vector pulse width modulation technology (SVPWM) control method. Combining with the fuzzy PID control principle, fuzzy PID control strategy of permanent magnet synchronous motor is studied. This paper discusses the method of establishing SVPWM control system...
We examined the effects of the saponin fraction and its principal saponins, escins Ia (1), Ib (2), IIa (3) and IIb (4), obtained from European horse chestnut, and their hydrolyzed products, desacylescins I (5) and II (6) on magnesium absorption from the gastrointestinal tract in mice. Test samples were given orally to fasted mice before loading of 0.5 or 1.67 M MgSO 4 (10 mL/kg, p.o.). The...
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