Interactions
Simulating the Ripple-Voltage
In the present simulation, the modulation is 100%, the rotation frequency is 200 Hz (= 3000 rpm for a 4-pole machine)
This results in a peak current of about 1000 A and an effective value of about 700 A
Combining HV-LE and HV + LE to HV-DC (the battery voltage at the inverter port) provides a variable for the FFT
The battery voltage with the Ripple-Voltage on the HV-line and the corresponding phase-current
The battery voltage with the Ripple-Voltage on the HV-line and the corresponding phase-current - zoomed
The battery voltage with the Ripple-Voltage on the HV-line and the corresponding phase-current - at 100 Hz rotary frequency
The battery voltage with the Ripple-Voltage on the HV-line and the corresponding phase-current - zoomed - at 100 Hz rot. frequency
The maximum Ripple-Voltage results if the phase current and the modulation is maximum
Both with smaller modulation - in our example at 100 Hz rotation frequency - as well as with smaller phase current - in our example at 400 Hz rotation frequency - the Ripple-Voltage remains at smaller amplitudes
The battery voltage with the Ripple-Voltage on the HV-line and the corresponding phase-current - at 400 Hz rotary frequency
The battery voltage with the Ripple-Voltage on the HV-line and the corresponding phase-current - zoomed - at 400 Hz rot. frequency
© Ingenieurbüro Lindenberger 8447