1. Design a three-phase two-level inverter using MATLAB Simulink with below spec:DC-link voltage: 400 VFundamental frequency: 60 HzSwitching frequency: 10 kHzSampling frequency: 2 MHzOutput...

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1. Design a three-phase two-level inverter using MATLAB Simulink with below spec: DC-link voltage: 400 V Fundamental frequency: 60 Hz Switching frequency: 10 kHz Sampling frequency: 2 MHz Output load: 5 ohm and 5 mH (use three-phase series RLC branch in element tab) Phase A angle at 0 degree a. Plot 0.017s of fundamental signal and triangular waveforms. b. Record and plot 0.1s of line-to-line, line-to-neutral, and phase current waveform at modulation index 1. c. Record and plot 0.1s of line-to-line, line-to-neutral, and phase current waveform at modulation index 0.5. d. What are the peak voltage of the line-to-line and line-to-neutral voltage? e. Can you compare phase current from a and b? What are the differences? 2. Inject third harmonics (180 Hz, sinusoidal, m=0.15, phase angle at 0 degree) to the fundamental frequency. a. Plot 0.017s of fundamental signal and triangular waveforms. b. Increase the modulation index of the fundamental component till its peak reaches the peak of the triangular waveform of 1. c. Record and plot 0.1s of line-to-line, line-to-neutral, and phase current waveform at the new modulation index. d. Can you compare phase current from 1a and 2c? What are the differences?