Electric Drive System Design, Simulation and Construction

Electric Drive System Design, Simulation and ConstructionAbstractIn this experiment, three phase flexible inverter was used to move a Brush Less Direct Current (BLDC) machine. Three experiments steps use three-phase inverter which is connected to resistor and inductor load and BLDC machine to examine and esteem 1) Pulse Mode Modulation (PMW) 2) Three loop signal curving and 3) BLDC signal sequence. Computer simulation using MATLAB Simulink is used to analyze the laboratory end point and software calculation. The speed and torque of BLDC machine fuck be controlled by controller using PWM technique. This BLDC machine can be modelled as Resistor and induction Load.1.1 BackgroundMany electrical load (e.g. electric motor, lighting) need a wide of range potential difference, current, frequence and phase angle which is converted from electrical beginning (e.g. electric grid, battery) with constant voltage, frequencies, current and phase angles. This conversion mechanism use power e lectronics converter and one application of converter is inverter which convert DC arousal into AC output 1. In this experiment, this inverter will provide a variety of voltage and frequency to drive BLDC machine in order to rifle at a specific speed and torque.1.2 Module AimsThe aim of this experiment is to understand design, construction, simulation, and testing of an electrical drive system through practical experience. The procedure of this stomach can be divide into following steps.Research electrical drive technology.Construction of an electric drive.Simulate and understand an electric drive system.Experimental test, analysis and verification of the systemDiagrammatic interpretation of software operationProduction of a written technical report.2.1 Pulse comprehensiveness ModulationIn this experiment, the rophy use 3 pairs of MOSFETs as shown in code 2.1. Having set the PIC software to the PWM test mode for the controller, measurements was taken on terminal point in thre e pairs (J1-J2, J3-J4 and J5-J6) which indicate gate-on voltage. see 2.1. 3-phase MOSFET arrangement diagram.The gate-on voltage on terminal J1-J2 over time can be shown in figure xx, it consists of time-on (T-on) and time-off (T-off). Time switch period can be calculated as T=t-on+t-off and duty rhythm as ratio of time-on (T-on) over time switching period. The 3 pairs of MOSFET make believe relatively the same switching frequency and gate-on voltage, but in the different percentage of duty musical rhythm, as complete result shown in table xxx. From figure xx, dead time is calculated as time span from J1 when voltage start to off and J2 when voltage start to on.PMW switching frequency =Duty cycle = forecast 2.2. PWM signal for J1 (Yellow) and J2 (Green) time-on, time-off and voltage on. go in 2.3. PWM signal dead time surrounded by J1 (Yellow) and J2 (Green).Table 2.1. PWM Signal (J1 to J6)2.2 Three Phase Sine Wave rootageIn this experiment, the controller is programmed with t est 2 test to convert from DC submit to 3-phase AC output. The output of inverter connected to electrical load (resistor and inductor) and then voltage is measured between resistor R1. The frequency of AC output can be altered by the R22 kitty.By alter the setting of potentiometer, the result between resistor R1 (V1-V2) can be shown in figure 2.1 for stripped, figure 2.2 for middle, and figure 2.3 for maximum setting of potentiometer.Figure 2.4. Inverter frequency (f=1.97Hz) in the tokenish setting of potentiometerFigure 2.5. Inverter frequency (f=16.18Hz) in the middle setting of potentiometerFigure 2.6. Inverter frequency (f=19.82Hz) in the maximum setting of potentiometerFigure 2.7. PWM signal (f=10.16kHz) time at the duty cycle 23%.2.3 BLDC Motor ControlIn the test-3, the controller is programmed with test 3 test to convert from DC supply to operate and control a three phase BLDC machine. BLDC machine is equipped with three Hall Effect sensors, their function is to sense the rotor position to the controller in order to make MOSFETs can make certain switching arrangement to produce a particular speed for BLDC motor.After inverter connected to hall resultant sensor and to power supply of BLDC motor, the results can be shown for the sequence position between H1-H2 (figure xx), between H1-H3 (figure xx) and also the total sequence position between H1-H2-H3 in figure xx. The supply voltage for BLDC, phase A voltage is can be shown in figure xx and figure, which magnitude at around 25 V but the duty cycle fluctuate between range 37% up to 62%.Figure 2.8. H1 (Yellow) and H2 (Green) sequence at almost akin frequency (f1=132Hz and f2=131Hz)Figure 2.9. H1 (Yellow) and H3 (Green) sequence at almost similar frequency (f1=132Hz and f3=130Hz)Figure 2.10. Relation between H1 (state 1) and voltage phase A (duty 37%).Figure 2.11. Relation between H1 (state 0) and voltage phase A (duty 62%).Figure 2.12. H1-H2-H3 command sequence.2.4 Variable DC Supply SimulationI n this Matlab simulation, DC supply was connected to resistive-inductive load with the pass judgment of R=47Ohm and L=33mH. DC output was produced by compare the triplicity waveform and a reference setting point. The triangle waveform magnitude has minimum observe -1 and maximum honor +1 with a frequency 20kHz. The reference setting point was set at 0, 0.5 and 1 which represent duty cycle (D=0%, D=50% and D=100%).The shape of current waveform with duty cycle can be shown in figure xx. in that respect are several(prenominal) screens captures with a mutation of 1) the reference setting point (figure xx), 2) the triangle switching frequency and 3) the value of trigger.Figure 2.13. The output current with duty cycle D=50% and swithing frequency fs=20kHzFigure 2.14. The output current with different inductance duty cycle (D=0%, D=50%, and D=100%)Figure 2.15. The output current with different switching frequency (fs=10kHz, fs=20kHz, and fs=40kHz)Figure 2.16. The output current with different inductance value (L=1.65mH, L=3.3mH, and L=33mH)2.5 Variable AC Supply SimulationIn this AC supply, AC supply was also connected to resistive-inductive load with the value of R=47Ohm and L=33mH. AC output was produced by compare the triangle waveform and a sinusoidal control signal. The triangle waveform magnitude has minimum value -1 and maximum value +1 with a frequency 10kHz. The reference was a wickedness wave with frequency 50 Hz and magnitude varying from maximum +1 and minimum -1.The shape of current waveform with duty cycle can be shown in figure xx. There are several screens captures with a variation of 1) the sinfulness wave reference signal (figure xx), 2) the triangle switching frequency and 3) the value of inductance.Figure 2.17. The output current with a sine wave reference setting fc=50Hz and a switching frequency fs=10kHzFigure 2.18. The output current with different sine wave reference setting (fc=25Hz, fc=50Hz, and fc=100Hz)Figure 2.19. The output curre nt with different switching frequency (fs=10kHz, fs=20kHz, and fs=40kHz)Figure 2.20. The output current with different inductance value (L=1.65mH, L=3.3mH, and L=33mH)3.1 Pulse Width Modulation (PWM)This MS Word templet (.dot file) was prepared by Dr. Jonathan I. Maletic in the Department of Computer Science at Kent State University. This is Version 1.0. It is a template for Thesis/Dissertations for the College of Arts and Science at KSU.3.2 Three Phase Sine Wave GeneratorIn this Matlab simulation, DC supply was connected to resistive-inductive load with the value of R=47Ohm and L=33mH. DC output was produced by compare the triangle waveform and a reference setting point. The triangle waveform magnitude has minimum value -1 and maximum value +1 with a frequency 20kHz. The reference setting point was set at 0, 0.5 and 1 which represent duty cycle (D=0%, D=50% and D=100%).The shape of current waveform with duty cycle can be shown in figure xx. There are several screens captures with a variation of 1) the reference setting point (figure xx), 2) the triangle switching frequency and 3) the value of inductance.3.3 BLDC Motor ControlIn this AC supply, AC supply was also connected to resistive-inductive load with the value of R=47Ohm and L=33mH. AC output was produced by compare the triangle waveform and a sinusoidal control signal. The triangle waveform magnitude has minimum value -1 and maximum value +1 with a frequency 10kHz. The reference was a sine wave with frequency 50 Hz and magnitude varying from maximum +1 and minimum -1.The shape of current waveform with duty cycle can be shown in figure xx. There are several screens captures with a variation of 1) the sine wave reference signal (figure xx), 2) the triangle switching frequency and 3) the value of inductance.3.4 Variable DC Supply SimulationIn this AC supply, AC supply was also connected to resistive-inductive load with the value of R=47Ohm and L=33mH. AC output was produced by compare the triangle waveform and a sinusoidal control signal. The triangle waveform magnitude has minimum value -1 and maximum value +1 with a frequency 10kHz. The reference was a sine wave with frequency 50 Hz and magnitude varying from maximum +1 and minimum -1.The shape of current waveform with duty cycle can be shown in figure xx. There are several screens captures with a variation of 1) the sine wave reference signal (figure xx), 2) the triangle switching frequency and 3) the value of inductance.3.5 Variable AC Supply SimulationIn this AC supply, AC supply was also connected to resistive-inductive load with the value of R=47Ohm and L=33mH. AC output was produced by compare the triangle waveform and a sinusoidal control signal. The triangle waveform magnitude has minimum value -1 and maximum value +1 with a frequency 10kHz. The reference was a sine wave with frequency 50 Hz and magnitude varying from maximum +1 and minimum -1.The shape of current waveform with duty cycle can be shown in figure xx. There are several screens captures with a variation of 1) the sine wave reference signal (figure xx), 2) the triangle switching frequency and 3) the value of inductance.