LAB REORT2.docx

16 4 voltage vs speed characteristics of a wind

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4. VOLTAGE Vs SPEED CHARACTERISTICS OF A WIND TURBINE GENERATOR I. AIM: To familiar with the principle of electromagnetic induction and the effect of change in speed has on magnitude of the AC voltage II. EQUIPMENTS REQUIRED: In the EMS workstation, these modules were used, S.No . Equipments Quantity 17
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1. Wind Turbine Generator 1 2. Timing Belt 1 3. Four-Quadrant Dynamometer 1 4. Connecting leads As required for connection III. EXPERIMENTAL SETUP: i. Installed all the required modules in the EMS workstation. ii. Connected the 24V AC power supply to the Power Input of Data Acquisition and Control Interface. iii. Connected the USB port of Data Acquisition and Control Interface to USB ports of the computer and turned on the 24V AC power supply for Data Acquisition and Control Interface unit. iv. Turned on the computer and started the data acquisition software LVDAC_EMS and selected the 240V and 50Hz as operating voltage and frequency. v. Set the main switch of the Four-Quadrant to the 0ff position, then connect the power input to an ac power outlet IV. PROCEDURE: i. Connected the circuit as shown in Figure 10. Figure 10. Setup used to plot speed VS voltage 18
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ii. In the Four-Quadrant dynamometer window, set the wind turbine generator to rotate at 1000 r/min Rotation speed of the prime mover – 1333r/min iii. Recorded the voltage as speed varied from 0 to 1500r/min and tabulated in Table6. Table 6. Generator volatge for different speed Generator Speed Generator Voltage Generator Frequency 0 0.172 390.5 193 4.347 14.43 400 9.023 30.01 600 13.54 45.07 802 18.1 60.24 1001 22.58 75.14 1201 27.05 90.06 1400 31.55 105 1500 33.82 112.5 iv. Plotted the graph for generator voltage Vs generator speed Graph 7. Voltage Vs Speed 19
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v. Plotted the graph for frequency versus speed Graph 8. Frequency Vs speed vi. Removed all the leads and cables. V. CONCLUSION: The permanent magnets are mounted in the rotor and in the rotor’s periphery, 12 permanent magnets are located. The speed of the generator increases, the voltage and frequency of the generator also increases. As the speed increases from 0 to 200 rpm, the voltage increases to 4.32V, so that increase in 100 rpm leads to increase of 2V. From this experiment, it was observed that voltage and frequency are directly proportional to the speed. 20
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5. TORQUE Vs CURRENT CHARACTERISTICS OF A WIND TURBINE GENERATOR I. AIM: To familiar with the torque-current characteristics of a wind turbine generator II. EQUIPMENTS REQUIRED: In the EMS workstation, these modules were used, S.No . Equipments Quantity 1. Wind Turbine Generator 1 2. Timing Belt 1 3. Four-Quadrant Dynamometer 1 4. Resistive Load 1 21
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5 Connecting leads As required for connection III. EXPERIMENTAL SETUP: i. Installed all the required modules in the EMS workstation. ii. Connected the 24V AC power supply to the Power Input of Data Acquisition and Control Interface.
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