When starting the demo, the panel in Figure 19 appears first with the default settings.
Figure 19: Start-Up Panel of Buck-Boost Converter Laboratory
For operating the buck-boost converter panel, the student can refer to the panel operation of the boost converter, because the panels of both models are very similar.
The differences in the control parameters, content of scopes, and nameplate ratings for the buck-boost converter are presented in tables 26 to 28 below.
Control Parameters | Default Value | Interval of Variation |
|---|---|---|
DC Source Voltage (V) | 100 | [0; 200] |
Switching Frequency (Hz) | 1500 | [1500; 3600] |
Duty Cycle | 0.5 | [0.1; 0.9] |
Inductance (mH) | 100 | 50 or 100 |
Capacitance (µF) | 400 | 400 or 800 |
Table 26: Control Parameters of the Buck-Boost Converter
Scope | Content of Scopes & Displayed Waveforms |
|---|---|
Scope11 | Load output voltage and switching signal (multiplied by a factor of -10) |
Scope21 | Input current of the DC source and inductor current |
Scope12 | Load output current |
Scope22 | Input power of the DC source and load output power |
Table 27: Content of Scopes and Displayed Waveforms in Buck-Boost Converter Laboratory
Nominal Power | 10 kW |
Input Voltage | [0; 200] V |
Output Voltage | [-500; 0] V |
Output Current | [-50; 0] A |
Table 28: Buck-Boost Converter Nameplate Ratings