Research of Integrated Power Propulsion System Simulation Based on PSCAD

2014 ◽  
Vol 875-877 ◽  
pp. 1939-1943
Author(s):  
Hai Lan ◽  
Xin Zhao ◽  
Jie Meng
Keyword(s):  
Electric Propulsion ◽  
Frequency Converter ◽  
Propulsion System ◽  
Regulation System ◽  
Control Effect ◽  
Speed Regulation ◽  
Marine Propulsion ◽  
Fortran Language ◽  
Motor Load ◽  
The Stability

Modeling and simulation of generator, frequency converter, motor, propeller of integrated power system in PSCAD environment respectively, finally form a complete system, which contains the diesel engine and speed regulation system, generator and excitation system, motor and vector control system. Establish the propeller model as motor load by Fortran language. The motor load constantly changing, traditional PI controller parameters are not easily adjusted in real time, SNAPID controller based on the error changes in the changing, complete SNAPID controller in MATLAB environment and call MATLAB continually, the control effect of speed is improved in the process of marine propulsion. Finally simulate typical working condition of system, the simulation results show that propeller shaft torque is smaller when grading operating, the influence of electric propulsion system is smaller and conducive to maintaining the stability of the system.

Study on Direct Torque Control Applied in the Electrical Propulsion Ship

2011 ◽  
Vol 354-355 ◽  
pp. 1252-1256
Author(s):  
You Tao Zhao ◽  
Yan Cheng Liu ◽  
Jun Jie Ren
Keyword(s):  
Electric Propulsion ◽  
Control Method ◽  
Direct Torque Control ◽  
Torque Control ◽  
Regulation System ◽  
Propulsion Systems ◽  
Speed Regulation ◽  
Imple Mentation ◽  
Electrical Propulsion ◽  
Simulation Results

With the development of AC (alternating current )technique, larger power PMSM ( permanent m- agnet synchronous motor ) has been applied in the marine electric propulsion systems. In this paper the imple- mentation of the DTC (direct torque control) systems for a variable-speed 4088kW PMSM in ship electric propulsion systems has been studied. A novel control method using SVPWM (space vector pulse width mo- dulation) was proposed and a SVPWM module was designed. Then a DTC – SVPWM simulation model of PMSM with the load of propeller was found. The simulation results shows that the variable frequency speed regulation system have good response performance in the process of the motor start or speedup and through comparing the simulation results with the experiment data of the PMSM, the validity of the model is verified.

Speed Regulation Strategies of PMSM Based on Adaptive ADRC

2012 ◽  
Vol 466-467 ◽  
pp. 546-550 ◽  
Author(s):  
Wen Gu ◽  
Jiu He Wang ◽  
Xiao Bin Mu ◽  
Sheng Sheng Xu
Keyword(s):  
Permanent Magnet ◽  
Control Strategy ◽  
Adaptive Algorithm ◽  
Permanent Magnet Synchronous Motor ◽  
Regulation System ◽  
Speed Regulation ◽  
Adaptive Parameters ◽  
Regulation Strategies ◽  
Simulation Results ◽  
The Stability

To the speed-regulation system of permanent magnet synchronous motor (PMSM), this paper presents a active disturbances rejection controller (ADRC) based on the adaptive theory. First, the inertia information will be obtained by identification. Then, ADRC is designed by combining an adaptive algorithm. The controller can realize the adaptive parameters adjustment according to the inertia information, which is called adaptive ADRC. Simulation results have confirmed this control strategy can effectively improve the stability and robustness of PMSM.

scholarly journals Computer-based model of asynchronous electric propulsion drive with three stator windings

2021 ◽  
Vol 1 (395) ◽  
pp. 132-140
Author(s):  
I. Kalinin ◽  
Keyword(s):  
Mathematical Model ◽  
Electric Power ◽  
Electric Propulsion ◽  
Frequency Converter ◽  
Asynchronous Motor ◽  
Electric Power System ◽  
Propulsion System ◽  
Stator Windings ◽  
Phase Coordinates ◽  
Computer Based

Object and purpose of research. This paper discusses electric propulsion system of leader icebreaker. Its purpose was to develop mathematical and computer-based model of electric propulsion drive powered by asynchronous motor with three stator windings for further investigation of steady, transitional, asymmetric and emergency operation scenarios of electric power and propulsion system for the leader icebreaker. Materials and methods. Hardware and methods for computer-based simulation of complex engineering structures. Main results. Development of the mathematical model representing asynchronous motor with three windings in phase coordinates. Computational studies on direct startup of 15 MW propulsion motor, as well as on steady and transitional operational conditions of ship electric power system consisting of 36 MW synchronous genset, two-winding transformers and electric propulsion drive with 15 MW asynchronous motor in phase coordinates with three stator windings and three-level frequency converter. Calculation of voltage non-sinusoidality ratio for MSB buses with operation of 15 MW propulsion motor driven by 36 MW synchronous genset. Conclusion. Mathematical model of asynchronous motor suggested in this paper could be used to calculate steady and transitional operation scenarios of marine power systems with frequency-controlled three-winding asynchronous motor, as well as to calculate electromechanical and electromagnetic processes and refine frequency control algorithms. This is especially relevant because each of the asynchronous electric machines used in the electromechanical assemblies of leader icebreaker propulsion motors has three stator windings, and this icebreaker is the first experience of applying a 15 MW marine electric drive.

Integrated System Design and Control Optimization of Hybrid Electric Propulsion System Using a Bi-Level, Nested Approach

2019 ◽  
Author(s):  
Li Chen ◽  
Huachao Dong ◽  
Zuomin Dong
Keyword(s):  
Electric Propulsion ◽  
Fuel Efficiency ◽  
Ghg Emissions ◽  
Propulsion System ◽  
Hybrid Powertrain ◽  
Electric Propulsion System ◽  
Powertrain System ◽  
Marine Propulsion ◽  
Hybrid Electric ◽  
Hybrid Electric Powertrain

Abstract Hybrid electric powertrain systems present as effective alternatives to traditional vehicle and marine propulsion means with improved fuel efficiency, as well as reduced greenhouse gas (GHG) emissions and air pollutants. In this study, a new integrated, model-based design and optimization method for hybrid electric propulsion system of a marine vessel (harbor tugboat) has been introduced. The sizes of key hybrid powertrain components, especially the Li-ion battery energy storage system (ESS), which can greatly affect the ship’s life-cycle cost (LCC), have been optimized using the fuel efficiency, emission and lifecycle cost model of the hybrid powertrain system. Moreover, the control strategies for the hybrid system, which is essential for achieving the minimum fuel consumption and extending battery life, are optimized. For a given powertrain architecture, the optimal design of a hybrid marine propulsion system involves two critical aspects: the optimal sizing of key powertrain components, and the optimal power control and energy management. In this work, a bi-level, nested optimization framework was proposed to address these two intricate problems jointly. The upper level optimization aims at component size optimization, while the lower level optimization carries out optimal operation control through dynamic programming (DP) to achieve the globally minimum fuel consumption and battery degradation for a given vessel load profile. The optimized Latin hypercube sampling (OLHS), Kriging and the widely used Expected Improvement (EI) online sampling criterion are used to carry out “small data” driven global optimization to solve this nested optimization problem. The obtained results showed significant reduction of the vessel LCC with the optimized hybrid electric powertrain system design and controls. Reduced engine size and operation time, as well as improved operation efficiency of the hybrid system also greatly decreased the GHG emissions compared to traditional mechanical propulsion.

Design and Simulation on Hydraulic Sleepless Speed Regulation System of Invariable Fertilizing Application

2014 ◽  
Vol 852 ◽  
pp. 665-670
Author(s):  
Jin Lin Wu ◽  
Li Xin Zhang ◽  
Jun Zhi Yu ◽  
Wei Bing Wang ◽  
Jia Hua Zhang
Keyword(s):  
Mathematical Model ◽  
Pid Control ◽  
Control Method ◽  
Transmission Error ◽  
System Stability ◽  
Regulation System ◽  
Speed Regulation ◽  
Model And Simulation ◽  
The Stability ◽  
The Mathematical Model

This paper proposes a hydraulic sleepless speed system for a invariable fertilizing application based on PLC, in order to enhance the stability of the hydraulic sleepless speed system and eventually achieve precise fertilizing. With particular emphasis on the stability of the hydraulic circuit and the actuation control method, mathematical model and simulation model for hydraulic sleepless speed system are established. More specifically, hydraulic sleepless speed system with stable oil circuit and oil pressure sensor is designed to ensure hydraulic system stability, while PID control algorithm is employed to compensate transmission error according to the mathematical model. The hydraulic sleepless speed system is then simulated in different PID control parameters. Simulations show that the results are reasonable and applicable, providing some theoretical guidance to the characteristics anticipation and test of hydraulic sleepless speed system. It is also found that when the PID parameter is chosen as =10, =0.08, =8, the fertilizing precision will be satisfied.

Controller Design for Different Electric Tail Rotor Operating Modes in Helicopters

2019 ◽  
Vol 33 (08) ◽  
pp. 1959022
Author(s):  
Peng Tang ◽  
Fei Wang ◽  
Yuehong Dai
Keyword(s):  
Disturbance Rejection ◽  
Electric Propulsion ◽  
Controller Design ◽  
Propulsion System ◽  
Operating Modes ◽  
Speed Controller ◽  
Speed Tracking ◽  
Disturbance Rejection Control ◽  
Self Tuning ◽  
The Stability

The nonlinear aerodynamics and new kinds of operation associated with helicopter electric tail rotors (ETRs) make accurate speed tracking control under complex flight conditions a key challenge confronting designers. In this paper, we present an electric propulsion system for tail rotors that uses a high-power-density permanent magnet motor. The management of aerodynamic disturbance rejection and accurate speed control are aspects of ETR design that require particularly close attention. To this end, we have developed a speed controller that is based on an active disturbance rejection control (ADRC) technique that can handle fixed speed and adjustable pitch-angle modes. We have also applied a linear extended state observer (LESO) with a self-tuning bandwidth to estimate fluctuations in the drive system. For variable speeds, a simple controller combined with an adaptive radial basis function (RBF) observer and nonlinear state error feedback using ADRC was designed to replace LESO while avoiding any dependence on the system parameters. The stability of the controllers was analyzed and their effectiveness was verified using a simulation platform. Test results showed that the propulsion system is able to achieve fast dynamic response and aerodynamic disturbance rejection.

Design of Dual-PWM VVVF System Based on ARM

2013 ◽  
Vol 756-759 ◽  
pp. 569-573
Author(s):  
Jian Wei Liang ◽  
Ling Liang ◽  
Shu Ren Han
Keyword(s):  
Control System ◽  
Vector Control ◽  
Control Strategies ◽  
Regulation System ◽  
Control Effect ◽  
Loop Control ◽  
Speed Regulation ◽  
Loop Control System ◽  
Infinite Loop ◽  
Cage Induction Motor

The article, three-phase squirrel cage induction motor as the research object, introduces the design of a new dual-PWM VVVF system based on ARM. The rectifier link design control strategies based on the power of the inner power loop and outer voltage square loop control system. The inverter link design a double infinite loop vector control speed regulation system of torque, flux linkage to the inner ring, rotational speed to the outer ring a double infinite loop vector control . And then, to combine rectifier link and inverter link to build dual-PWM VVVF system. Focuses on realization of the control system software and hardware-based LPC2132 and μ C/OS-II. Gives the hardware design of the overall program, as well as software realization based on the hardware μC/OS-IIoperating system . Introduce some of the specific features of the program as well as hardware and software anti-jamming technology . Conduct simulation verification to the dual-PWM VVVF system. The results show that: The dual-PWM control system can realize better control effect.

MT30: The Heart of Future Integrated Power and Propulsion Systems

2014 ◽  
Author(s):  
Oliver Rath
Keyword(s):  
Gas Turbines ◽  
Electric Propulsion ◽  
Propulsion System ◽  
Propulsion Systems ◽  
Marine Propulsion ◽  
Wide Range ◽  
Prime Movers ◽  
The Republic ◽  
The Uk ◽  
System Configurations

The MT30 has been developed specifically for 21st century marine propulsion and has now been applied in a wide range of different propulsion system configurations in the US Navy, the UK Royal Navy and the Republic of Korea Navy. Both naval and commercial marine propulsion systems are increasingly seeking more power from fewer prime movers to facilitate lower cost of ownership. In naval systems, the move to partial or full-electric propulsion for larger escorts and the introduction of single boost gas turbines for smaller escorts has allowed a reduction in the number of installed prime movers, while retaining and often enhancing survivability and redundancy. The Rolls-Royce MT30 marine gas turbine can be regarded as an enabling technology in this area to allow a wide variety of propulsion system options to be realised. This paper describes the current trends in Naval propulsion systems with particular focus on the platform design, operational and through-life benefits of the MT30 in the context of different system arrangements. A variety of different systems are covered with a particular focus on hybrid electromechanical and all-electric systems.

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