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ECPT system output voltage stability control method based on NSGA-II parameter optimization

A technology of output voltage regulation and control method, applied in the direction of control/regulation system, instrument, regulating electric variable, etc., can solve the problems of difficulty in researching output control strategy, high operating frequency, sensitivity to system parameter change, etc., to improve robustness Good effect with transmission performance, short rise time and robust performance

Active Publication Date: 2015-11-25
重庆华创智能科技研究院有限公司
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Problems solved by technology

[0004] Although in terms of basic theoretical analysis, ICPT technology and ECPT technology have a certain similarity and duality, but due to the characterist

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  • ECPT system output voltage stability control method based on NSGA-II parameter optimization
  • ECPT system output voltage stability control method based on NSGA-II parameter optimization
  • ECPT system output voltage stability control method based on NSGA-II parameter optimization

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[0082] Example

[0083] An output voltage regulation control method of ECPT system based on NSGA-II parameter optimization, such as figure 1 The generalized state space averaging method is used to establish the generalized state space averaging (GSSA) model of the ECPT system. Based on the GSSA model, a PID controller is used to construct a closed-loop network to control the output voltage of the system. The NSGA-II multi-objective multi-constraint genetic algorithm is used. The control parameters of the PID controller are globally optimized to obtain the optimal control parameters; in the process of index calculation using the NSGA-II multi-objective multi-constraint genetic algorithm, each individual parameter in the population is brought into the PID controller respectively. In the PID controller, the corresponding control variable is generated according to the error obtained by comparing the output value of the GSSA model with the voltage setting value, and the control va...

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Abstract

The invention discloses an ECPT system output voltage stability control method based on NSGA-II parameter optimization. A PID controller is adopted for conducting output voltage stability control on an ECPT system, a broad sense state space average model of the ECPT system is established, and based on the model, the method through which the NSGA-II multi-objective and multi-constraint genetic algorithm is utilized for conducting automatic optimization on control parameters of the PID controller is put forward. According to the optimization method, a group of optimal PID control parameters are searched out automatically under the multi-objective and multi-constraint condition, it is guaranteed that under the action of the PID controller and when the ECPT system load and transmission distance are varied within a certain range, the output voltage of a closed-loop system can still maintain the effect that the uprising time is short, the steady state error is small, and the Robust performance is good, thereby the Robust performance and transmission performance of the ECPT system are improved.

Description

technical field [0001] The invention relates to the technical field of electric field coupling type wireless power transmission, in particular to an ECPT system output voltage stabilization control method based on NSGA-II parameter optimization. Background technique [0002] After years of development, Wireless Power Transfer (WPT) technology has achieved a series of achievements in theory and engineering applications. This power transmission method can realize the transmission of power without direct electrical connection from the donor to the acceptor, thereby eliminating the problems of messy wiring, wire wear, and contact sparks that exist in the traditional contact power transmission method. Therefore, the wireless power transmission technology is especially suitable for electrical occasions with strict safety requirements and complex working environments, such as humid, flammable, explosive and other working environments. In the field of wireless power transfer techno...

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Application Information

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IPC IPC(8): G05F1/56
Inventor 苏玉刚陈苓芷唐春森孙跃戴欣王智慧叶兆虹
Owner 重庆华创智能科技研究院有限公司
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