A New Control Method for Microturbine-generation based Series Hybrid Power System

This paper takes the application of bidirectional DC-DC converter in Marine hybrid power system as the background, the problems of high reflow power and current stress in dual active bridge converter under traditional phase shift control are studied in this paper. Based on the dual phase shift control strategy, the power transmission optimization algorithm model is analyzed and derived, and a control method for optimizing mode switching is proposed. The optimized control algorithm is validated by Matlab/Simulink simulation experiment. The results show that the reflow power and current stress optimization control algorithm can effectively reduce the reflow power and the current stress of the converter, so as to improve the operation performance of DAB converter in high-power ship hybrid power system.

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A New Control Method to Mitigate Power Fluctuations for Grid Integrated PV/Wind Hybrid Power System Using Ultracapacitors

ENERGYO ◽

10.1515/energyo.0034.00443 ◽

2018 ◽

Author(s):

N. S. Jayalakshmi ◽

D. N. Gaonkar

Keyword(s):

Power System ◽

Control Method ◽

Hybrid Power System ◽

Hybrid Power ◽

Power Fluctuations

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Research of the Power Control for a MCFC/GT Hybrid System

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.860-863.2596 ◽

2013 ◽

Vol 860-863 ◽

pp. 2596-2599

Author(s):

Fan Yang ◽

Hua Xue ◽

Hao Li

Keyword(s):

Power System ◽

Hybrid System ◽

Control Method ◽

Molten Carbonate Fuel Cell ◽

Support Vector ◽

Molten Carbonate ◽

Hybrid Power System ◽

Feed Forward Control ◽

Hybrid Power ◽

Carbonate Fuel Cell

Molten carbonate fuel cell/ gas turbine hybrid power system (MCFC/GT) output power should real-time response the demand of load. The auto-tuning ZieglerNichols tuned PI controller (AZNPIC) as a feedback controller for power corrective action is added to the hybrid power system. The optimal setpoints and feed forward control inputs of the controller are given by Multi-output Support Vector Machine Regression (MSVR) predictor for the hybrid system. Simulation results show that the power of hybrid system can be effectively close to the desired setpoints based on the control method.

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Wind Turbine Speed Compound Control of a New-Type Wind-Electric Hybrid Power Pumping Unit

Mechanical Engineering Science ◽

10.33142/mes.v2i2.3162 ◽

2020 ◽

Vol 2 (2) ◽

Author(s):

Chunyou ZHANG ◽

Lihua WANG

Keyword(s):

Wind Speed ◽

Power System ◽

Control Method ◽

Mathematic Model ◽

Hybrid Power System ◽

Feed Forward ◽

Feed Forward Control ◽

Hybrid Power ◽

New Type ◽

Pumping Unit

Because the load of the oil beam pumping unit driven by pure electric motor changes sharply during operation, the power of the driving motor does not match and the energy efficiency is low. In this paper, a new type of wind-driven hydro-motor hybrid power system is proposed. The motor and the hydraulic motor are jointly driven, and the energy is recovered by a hydraulic pump with controllable displacement, so that the speed of the driving motor is relatively stable. In order to control the fan speed and keep up with the drastic changes of the outside wind speed, a control strategy of hybrid power system based on wind speed feed-forward compensation is proposed. Through simulation and experimental results, the following conclusions can be drawn: to begin with, the mathematic model is proved to be effective; next, simulation studies show that the proposed feed-forward control method can improve the response rate as well as reduce the response lag. This research can be a reference for the application of the feed-forward control method on the hybrid power system of beam pumping unit.system.

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