Single-Phase MPP-Tracking of a PV Generator on a Resistor
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Essential data of the PV generator with 4 modules in series, all at STC:
- $U_{PV,oc} = 86.4 V$
- $U_{PV,MPP} = 70.4 V$
- $I_{PV,sc} = 6.14 A$
- $I_{PV,MPP} = 5.68 A$
- $P_{PV,MPP} = 400 W$
Steps
- Modelling a PV generator depending on irradiation and temperature in PLECS
- Lookup-table using PLECS block
- Setting up a simulation environment: Refining template and extending it with MPP algorithm
- Maximize power, voltage not important
- Measure average power over up to 3 periods via effective capacitor current, $\rightarrow$ sensor can also be used for load drop detection
- Transformer ratio?
- Operating points for different modulation degrees m from 0 (idle) to 1 (short circuit) (ramp m with PV generator connected should return characteristic curve)
- Load drop detection: Smart shutdown and start-up routine with detection if load is present.
- System can oscillate (LC undamped)
- only with sensor for capacitor voltage and current
- Getting acquainted with code generation for STM32
- Research for a platform / concept for Auxiliaury Power
- H-bridge, which can be easily connected to sensors and STM
Todo
- [ ] move steps to project board
PLECS
- Install PLECS Standalone.
- Get a Student License. Use your smail address (...@smail.th-koeln.de).