• 180 likes • 441 Views
Inverter Simulation. Tim Cunnyngham 2001 Future Energy Challenge Project. Inverter Requirements. Operate from a 400 V DC input Maximum continuous power = 10kW Output: Split single-phase 120/240 V, 60 Hz ± 0.1 Hz (standard outlets). Additional Requirements.
E N D
Inverter Simulation Tim Cunnyngham 2001 Future Energy Challenge Project
Inverter Requirements • Operate from a 400 V DC input • Maximum continuous power = 10kW • Output: Split single-phase 120/240 V, 60 Hz ± 0.1 Hz (standard outlets)
Additional Requirements • THD < 5% for standard nonlinear load test • Acoustic noise < 50dB at 1.5 meters • Conform to FCC Class A for conducted and radiated EMI • Self-protection, and overload monitoring http://energy.ece.uiuc.edu/energychallenge/ FOR MORE INFO...
Simulation Assumptions • Input voltage is constant at 400V DC • All circuitry and components can be realized • Components are not ideal and include on-state resistance • Switching transients ignored
Simulated Inverter • Fundamental frequency f1: 60 Hz • Modulation frequency fs: 5940 Hz • Amplitude modulation ratio ma: 0.85 • Loads are inductive-resistive • Output is 120/240 Vrms nominal
Simulation Results • The following slides illustrate • Output voltage waveforms • Output voltage frequency analysis, FFT • The phase currents in the 3 loads • Phase Fundamental Voltage and Current • Instantaneous input power
Conclusions/Comments • Simulated output voltage: • Va was 119.2 rms • Vb was 119.6 rms • Vab was 238.7 rms • Investigate other inverter topologies • Use a higher modulating frequency of 19.980 kHz