The Research Of Control Strategy For Energy-saving Electricity With Super Capacitor Base On The Fuzzy Control

Along with the our country city rapidly, energy shortage problem is becoming more and more serious,the power shortage is the main factor that restricts our country national economy rapid development.According to relevant statistics, the building energy consumption energy consumption group is all in the largest, and building energy consumption 25% is generated by the elevator. According to the relevant domestic departments statistics show that, until recently, the number of elevators are used in China is about 2100000, and 20% at an annual rate of rapid growth.At present the main problems of the elevator energy saving technology is how to use the elevator motor in power state feedback to the DC bus power.In the use of renewable energy.In this paper, in between the rectifier and inverter dc bus parallel super capacitance method.Advantage of the characteristics of super capacitor ratio of power and energy storage, feedback back by a motor to absorb energy.When need electricity, super capacitor can be timely as the elevator and auxiliary devices power supply, recycling to realize energy feedback.Carried on the thorough analysis of elevator energy saving technology firstly,On the basis, designing the super capacitor storage elevator of renewable energy and energy saving solutions.On the super capacitance characteristic, capacity, deviation of features of the influence of the energy storage performance were studied.After the design of rectifier series Buck circuit and parallel circuit structure of super capacitor.According to the actual running situation of the elevator, formulate a reasonable control strategy,and in the Matlab/Simulink simulation platform building and running the system model.Based on the load current, super capacitor SOC(State Of Charge) as input variables,To Buck converter circuit in the duty ratio as control object in power switching devices. Designed the Fuzzy logic controller, and according to the distribution of different energy under the condition formulated the fuzzy logic rules.The research results show that the fuzzy control can reasonable distribution system of energy, energy saving elevator as a result of the super capacitors reference feedback energy utilization can be greatly improved, and it can quickly absorb the energy feedback, reduces the power grid electricity, achieved the effect of energy saving, the whole system has good technical performance and economic practicality.