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    Item type:Publication,
    Hydropower plant generator system
    (2018-06-08) ;
    Reangkittakarn, Saravut
    ;
    This paper presents the hydropower plant generator system. The hydropower plant model which simulates the actual flow rates is investigated, and it is realized as the Simulink model. The parameters of the permanent magnet synchronous generator are measured and the generator torque characteristic using the obtained parameters is calculated. The hydropower plant torque characteristic and the range of the flow rate in which the hydropower plant generator system can operate is clarified by comparing with hydropower plant Pelton type and hydropower plant Standard type.
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    Item type:Publication,
    Interconnection Inverter Control System of PMSG Wind Power Generation
    (2017-01-01)
    Reangkittakarn, Saravut
    ;
    This paper presents the experimental results of the operation of the system interconnection inverter control side for wind power generation system (WPGS) using PMSG. The diode bridge rectifier converter methods are utilized as converters for the WPGS. The experimental results are obtained by the test bench using the wind turbine emulator. The wind turbine emulator are reproduced the behaviours of windmill by the servo motor drives. The servo motor is calculated from windmill wing profile, the wind velocity and windmill rotational speed. The WPGS using PMSG employs the vector control system to control the torque and speed of PMSG and the active power and reactive power are controlled and generated power is sent to the grid-connected power generation while controlling the DC link voltage in the inverter side.
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    Item type:Publication,
    Bitmap picture to toolpaths converter for NC machine
    A simple method to create the toolpaths from bitmap picture of the workpiece for NC machine is described in this article. Halftone process is used to reproduce a continuous tone picture to binary tone picture for making a prototype picture. The obtained two dimensions picture with halftone process is employed to create the toolpaths of the sample workpiece. The workpiece dimension can be scaled to limitation of work table of NC machine by user with independent of picture resolution. The toolpaths are created as cutter location data (CL) that can be imported to postprocessor for NC machine. The proposed method is developed using visual C# programming language under window environment. Experimental implementation exhibits that the proposed bitmap picture to toolpath converter is efficient for the postprocessor to generate machine command for sculpture the workpiece from bitmap picture. ©ICROS.
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    Item type:Publication,
    Wind turbine emulator based on blade element momentum theory for variable-speed wind power generation system
    (2015-10-01) ;
    Ohyama, Kazuhiro
    ;
    Arinaga, Shinji
    This paper proposes a wind turbine emulator (WTE) based on the blade momentum theory, and tests the variable-speed wind power generation system using a pulse-width modulation (PWM) converter to verify the accuracy of the emulator. The behavior of the wind turbine for natural wind is reproduced by the WTE based on the proposed theory. The variable-speed wind power generation system employs a vector control system to control the torque and speed of the permanent magnet synchronous generator in the converter side. The windmill rotational speed is controlled to maximize the efficiency of the wind turbine against wind velocity. And the active power and reactive power are controlled in the inverter side, and the generated power is sent to the grid while controlling the DC link voltage to be constant at the same time. The behaviors of the WTE are compared with the simulation results and experimental results using a real wind turbine. These experimental and simulation results show that the test bench with the proposed WTE has sufficient performance and accuracy to verify variable-speed wind generator systems.
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    Item type:Publication,
    Integration of WirelessHART devices into mitsubishi PLC for plant monitoring
    (2018-06-08) ;
    Laosuwan, Issara
    ;
    ;
    This paper presents a technique to integrate WirelessHART devices into Mitsubishi PLC for plant monitoring. The integration between WirelessHART devices and Mitsubishi PLC is based on OPC technologies. DASMTEthernet OPC and DASMBTCP OPC are used to communicate between WirelessHART devices, Mitsubishi PLC and SCADA software. Commercial WirelessHART devices and Mitsubishi PLC are used in experiment. The experimental testing with Pneumatic object moving plant shown the proposed system can monitor pressure and temperature of air compressor and stop the operation of Pneumatic object moving plant when the pressure and temperature of the air compressor are out of defined range. The experimental results illustrated here are useful people interested in the use of measuring multiple parameters for monitoring conditions of industrial plant controlled by Mitsubishi PLC including commercial PLC.
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    Item type:Publication,
    Modeling and simulation of wind power generation system using AC to AC converter
    This paper proposes the wind generator system using the matrix converter method and evaluates them to select as a commutation method of the matrix converter. A matrix converter is the power converter which can output arbitrary voltage and frequency from AC input. The commutation of matrix converters must be careful so that the short circuit of power supply and the open circuit of load do not occur. The commutation methods are classified roughly into the voltage commutation method and the current commutation method. The fundamental performance of the wind power generation system using matrix converters are verified by discussing the simulation and experimental results.
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    Item type:Publication,
    Modeling and simulation of wind power generation system using diode bridge rectification circuit for converter
    This paper presents the variable-speed permanent magnet synchronous generator wind power system using the diode bridge rectification circuit for the converter. The wind speed model which simulates the actual wind is investigated, and it is realized as the Simulink model. The parameters of the permanent magnet synchronous generator are measured and the generator torque characteristic using the obtained parameters is calculated. The wind turbine torque characteristic and the range of the wind speed in which the wind power system can operate is clarified by comparing with boost converter method and PWM converter method. The diode bridge rectification circuit system simplifies the maintenance and improves the reliability and reduces the cost in compare with boost converter method and PWM converter method.
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    Item type:Publication,
    Hydropower plant generator system model using labVIEW
    (2019-07-01) ;
    Reangkittakarn, Saravut
    ;
    Khajornrungruang, Panart
    ;
    Phaisalpanumas, Pipat
    ;
    This paper proposes the experimental of hydropower plant generator system (HPGS). The HPGS using LabView that simulate the veritable flow rates control system is considered, the plant system includes of a permanent magnet synchronous generator (PMSG), a diode bridge rectifier circuit (DBRC) and an Inverter control system. The Inverter control system is used for current and voltage control is the power converter. The controller configured by the function in LabVIEW. In addition, valve control has too installation to computer monitoring a flow rate of water. Also, the obtained parameters are calculated form generator torque characteristic The HPGS using LabVIEW the implemented is explained by comparing the HPGS using Pelton method and the HPGS using standard method.