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Inverter Simulation

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.

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Inverter Simulation

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  1. Inverter Simulation Tim Cunnyngham 2001 Future Energy Challenge Project

  2. 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)

  3. 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...

  4. 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

  5. PSpice Inverter Circuit

  6. 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

  7. 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

  8. Voltage Waveforms

  9. Output Voltage, FFT

  10. Low-pass Filter Region

  11. Phase Currents

  12. Voltage and Current for PhaseAB

  13. Phase Va Voltage and Current

  14. Input Power

  15. 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

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