Ralf K.
Building a solar energy trailer for decentralized, self-sufficient energy storage and off-grid supply
Experience
Oct 2023 - Present
2 years 1 monthBuilding a solar energy trailer for decentralized, self-sufficient energy storage and off-grid supply
- Tested solar technology equipment.
- Battery testing of 200Ah 48V systems.
- Planned storage and distribution systems for solar installations.
Aug 2023 - Present
2 years 3 monthsErlangen, Germany
Team member
ZAM
- Conversion, dismantling, and installation of new systems at ZAM in Erlangen.
- The Center for Work and Participation is a city-supported project where Bits und Bytes, the CCC, and FAU University of Erlangen collaborate.
Apr 2023 - Jun 2023
3 monthsPilot Plant 23
VW Werk Mosel
- Commissioning measurement technology for VW ID3, ID4, Audi Q4, Seat Cupra.
- Bug finding, tracing, tracking, error reporting.
- Prepared releases for FDS1 and FDS2 measurement technology.
- Integrated CANoe measurement technology with LIN and CAN on ICAS 1 and ICAS 3.
- Worked with VW measurement technology and error reporting.
Feb 2023 - Mar 2023
2 monthsKarlstein am Main, Germany
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BMZ
- Tested Bucher V20 and V50, Microlino Mid Off Line, Kaco Master and Preh Slave systems.
- Fault measurement: analysis, working with the Preh interface and simulators for 48V.
Jan 2023 - Jan 2023
1 monthElectromobility training
Alfatraining
- Latest developments in e-mobility, motor calculations, newest chargers, high-range battery systems, comparison of different electric cars and models.
Apr 2022 - Present
3 years 7 monthsWeissach, Germany
Electronic Development
Porsche
- Integration testing of Porsche control units on CAN mobile units.
- Testing FlexRay, CAN, LIN and Ethernet connections and functionality.
- Evaluating test runs, documenting results.
- GÖPEL test systems NG1 to NG8.
- Pfiff ticket system, AKKA databases for documenting pass/fail cases.
- Single tests on the Magic Car platform.
- HIL tests for individual device evaluation.
Feb 2022 - Apr 2022
3 monthsBad Friedrichshall, Germany
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Valmet Automotive
- Test bench measurements of 48V systems.
- Assembling accessories for modular battery systems from 400 to 800V.
- Getting to know test bench setup.
- Assisting in building test benches.
Jan 2022 - Jan 2022
1 monthLeipzig, Germany
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SENEC Heimspeicher
- V4 energy storage, analyzing the setup, offering solution proposals, creating test cases for system tests.
- Measurements.
May 2021 - Oct 2021
6 monthsNeubiberg, Germany
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Infineon
- Measuring SiC MOS-IGBTs and diodes.
- Overcurrent turn-off, characteristic curve determination for IGBTs and diodes, quality checks, external analyses, MMCI measurements, running measurement programs, temperature measurements in the working range, prototype comparison.
- Latest IGBT series from Infineon for rail, e-mobility, wind turbines, solar plants, charging technology.
- Evaluation of measurements using macro files.
Feb 2021 - Apr 2021
3 monthsFrickenhausen, Germany
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Farasis Akkusysteme
- Building system test benches, measuring 400V battery systems, determining capacity, ISO watchdogs, protective shutdown, diagnosing BMS systems, test automation, emergency stop check.
Aug 2020 - Feb 2021
7 monthsBöblingen, Germany
System Test and Commissioning
Advantest
- Set up and test VS93000 test bench: create and implement.
- Analyze results and evaluate.
- Create test cases, add to prototype status, and extend.
- Maintain database, release prototypes.
- Oscilloscope measurements.
- Build, commission, and test test rigs.
- Determine and document electrical parameters.
- Check SQL databases, load data into Matlab Simulink, operate FPGA test rigs, and run FPGA tests with pre-series samples according to test procedures.
Dec 2019 - Feb 2020
3 monthsAllendorf, Germany
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Viessmann Battery Testing
- Create home energy storage test cases for battery and Steca 4.6 kW inverter.
- Test interaction of 2 kW battery modules from 2 to 6 units with the overall system.
- Perform testing in the V-model and according to ISO 14001.
- Record entries in Polarion and Scrum.
- Use analysis tools.
- Consider requirements and specifications.
- Develop shutdown scenarios with DTC.
- Prepare basic B-series test procedures.
- In test container: optimize the CAPL user interface.
Jan 2019 - Dec 2019
1 yearSoest, Germany
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Delta Electronics
- Build charging system test racks for CCS and CHAdeMO charging tests (e-mobility) for Daimler and VW.
- Set up test systems, load software and certificates.
- Check connections, flash and program FPGA, manage FPGA data.
- Parallel setup of multiple test systems.
- CCS 150 kW, planning for 250 kW charging.
Jan 2019 - Dec 2019
1 yearSailauf, Germany
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Magna Electronics
- Prepare driver assistance test cases for ADCAM and Lidar.
- Develop test scenarios for BMW road tests, document in Excel according to ISO 26262.
- Create presentations on ACC driver assistance (autonomous and semi-autonomous driving).
- Write documentation in MS PowerPoint and DOORS.
- Flash FPGA.
- Update FPGA.
Jan 2017 - Dec 2018
2 yearsFriedrichsdorf, Germany
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Peiker Valeo
- Prototype Car-to-X authorization (WMI authorization) – C + D samples for Daimler series Car2X component with CAN interface (cars, vans, trucks).
- Test in all variants and in all sessions: Default, Programming, Extended.
- Perform Qi wireless charging tests on pre-series and near-series samples from 5 to 15 W with various mobile phones: Apple, Blackberry, Huawei, LG, Nokia, Samsung, Sony.
- Work with Qi sniffer, NFC sniffer, and Bluetooth sniffer.
- Work with Vector VN systems.
- Wireless Power Consortium: product analysis, software status, align new developments with engineering.
- Detailed knowledge of processes during system start, charge start, signal setup, handshake, current ramp, and charge stop.
- Develop shutdown scenarios.
- Determine power loss and flux value for power loss during field buildup and charging (magnetic flux density).
- Measurements with oscilloscope.
- Integrate system components over Body CAN network and wireless interface.
- Authorization handshake with EIS.
- Timing analyses.
- Identify interference factors.
- Work with ISO 26262 safety guidelines.
- Apply ISO 15504 standard.
- Create test cases.
- Provide detailed reporting with ticket system on sample statuses.
- Log errors in DOORS and follow safety guidelines, work with sensitive components, code and flash FPGA with Renesas system.
- Perform system updates of FPGA systems.
- Work in the lab and in production.
- Train new employees.
- Alignment meetings and coordination with Daimler.
- Team meetings with internal staff and customer representatives.
- Support international customers.
Jan 2017 - Dec 2017
1 yearBad Rodach, Germany
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Valeo Siemens
- Validation of KKL climate systems for BMW: check measuring equipment, verify accuracy, monitor calibration values, testing lab: check CAD values, coordinate suppliers, create and track schedules.
- Train employees in climate system testing.
- Approve prototype test rigs.
- Test KKL prototypes in the testing lab.
- Verification and validation of ISO 26262 systems.
Jan 2015 - Dec 2016
2 yearsLiechtenstein
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Thyssen Krupp AG
- Extend Diadem database for steering systems, perform acceptance tests, compare test rigs.
- Perform measurements with National Instruments modules.
- Parameterize systems.
- Analyze key parameters of the steering angle sensor.
- Flash FPGAs and code test systems.
- Measure with oscilloscope and magnetic field analyzer of the test bench.
- Inventory measuring devices.
- Set up a calibration test bench in Eschen.
- Train employees at the test bench.
- Optimize warehouse logistics with database and scanner.
- Integrate steering systems into warehouse logistics with QR codes.
Jan 2014 - Dec 2016
3 yearsEsslingen, Germany
Vehicle tests with Tesla Model S85
Hochschule Esslingen: Institut INEM
- Charging tests, range tests.
- System tests of the air conditioning, charging unit, and battery.
- Analyze thermal battery conditioning, balancer on/off setpoints, allowable drifts, limits.
Jan 2014 - Dec 2015
2 yearsHerzogenaurach, Germany
Development of roll stabilization
Schaeffler AG
- Set up mechanical test rigs for adaptive chassis for BMW and Porsche suspensions.
- Integrate Vector Canoe and VT systems.
- Perform operational tests.
- Conduct sand, dust, moisture, dew, cold, and hot testing.
- Test safety features with ISO 26262 and Automotive SPICE.
- Perform durability analysis.
- Calibrate measuring tools and test rig setups.
- Integrate into existing test benches.
- C + D prototype tests with trace analysis of anomalies.
- Series release for BMW system (12V), analyze 48V system data.
- Calibration run.
- Prototype system check/release.
- Evaluate endurance runs.
Jan 2013 - Dec 2013
1 yearStuttgart, Germany
OBD 3 wireless tests database extension
Porsche AG Manufaktur 918
- Check wireless interface.
- Integrate ODX and OTX data into the directory path.
- Create ODX containers.
- Variant identification, model series identification.
- Extend the graphical interface for diagnostics.
- Update directory tree with the latest diagnostic data.
- Work on the Porsche 918 pre-production series at production launch.
Jan 2013 - Dec 2013
1 yearKleinandelfingen, Switzerland
Checking/testing elevator controls
Swisslift Schweiz
- Work through checklists/acceptance tests for safety modules of control cabinets for Thyssen, Haushahn etc.: safety circuits in passenger elevators, measurements, system checks, practical tests, flashing and loading data into FPGAs for elevator controls.
- Selecting the series and specific settings.
- Encoding the data set.
- Commissioning on the test rack.
- Troubleshooting, root cause analysis, fixing errors.
- Commissioning control cabinet with extensions.
- Final acceptance with insulation measurement.
Jan 2012 - Dec 2013
2 yearsBietigheim-Bissingen, Germany
Automated parking assist - pre-series development for ultrasonic sensors
Valeo Schalter/Sensoren GmbH
- Determine measurement parameters for sound pressure, emission, and immission.
- Conduct measurements with various interference sources.
- Work with Polytec laser vibrometer.
- Identify characteristic frequency ranges.
- Oscilloscope and test bench measurements of the sensors.
- Fit ultrasonic sensors, bond them, apply damping materials.
- Engrave markers on sensors.
- Inspect batches, archive golden samples.
- Update databases.
- Create evaluations of all technical data.
- Present the measurement results.
Jan 2011 - Dec 2012
2 yearsVilsbiburg, Germany
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Draexlmaier Entwicklung BMW i3 und i8
- Test thermal preconditioning of BMW i3 batteries.
- Perform C0 – D prototype tests with Vector Canoe and GUI for load tests.
- Parameterize characteristic curve fields.
- Determine required heating values for given outside temperatures.
- Create test cases based on specifications and requirement documents.
- Continuously regulate and check DTC error codes.
- Comply with safety criteria according to ISO26262.
- Maintain ASIL safety levels in testing according to A-Spice.
- Enter and analyze data in DOORS.
- Adjust control mechanism.
- Evaluate, check, and extend LIN and CAN data fields.
- Process and optimize alarm scenarios, fill the CAN-LIN gateway data fields and message catalog.
- Perform timing analysis, use multimeter and oscilloscope.
Jan 2010 - Dec 2010
1 yearStuttgart, Germany
Truck development
Daimler AG
- Flash/code updates on Actros trucks.
- Endurance testing of prototype trucks.
- Upload new software releases.
- Variant and series coding.
- Parameterize special equipment/systems.
- Install software updates.
- Test truck functions in detail.
Jan 2009 - Dec 2010
2 yearsMunich, Germany
Medical courier
Ontime Kurier
- Transport medically extracted human bone marrow from DKMS for the international courier service Ontime Kurier.
- Transports to Germany, neighboring countries and the USA.
- Flight destinations include Washington, Kansas, Dallas, Phoenix, Graz; time-sensitive and life-critical transports for emergency patients at the destination.
- Ensure timely and properly documented handling of transport in English.
- Train new couriers in airport operations.
Jan 2009 - Dec 2009
1 yearKristiansund, Norway
Automotive Electrician (Car Mechanic – Maintenance Technician)
Slatlem
- Maintenance of Subaru, Peugeot, and BMW vehicles: translations for diagnostic tools.
- Installation of special equipment like navigation systems, trailer hitches, or special spare parts.
Jan 2008 - Dec 2009
2 yearsEhra-Lessien, Germany
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Semcon for VW
- Prototyping the VW XL1 and conducting ACC/ESP driver tests; setting up fuses for the VW T5 GP facelift and LT35.
- Creating circuit diagrams for the VW Polo, VW T5, VW LT35, and VW XL1.
- Pre-development of a wiring harness for the VW XL1 (the one-liter car), defining the fuses, fuse design, and system shutdowns.
Jan 2008 - Dec 2008
1 yearAschheim, Germany
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BMW FIZ
- ACC system testing, system validation, series release.
- F01, F02, F10 prototypes.
- Calibrating long-range radar.
- Flashing the ICC control unit.
- Test drives with prototypes at the FIZ in Munich–Aschheim and in Miramas, France.
Jan 2006 - Dec 2007
2 yearsStuttgart, Germany
Industrial Electronics Technician / Electrical Technician
Deutsche Bahn
- Maintaining the ICE air conditioning at the Munich service workshop.
- Checking ICE1–ICE3 systems.
- Door detection systems.
- Expanding UMTS systems.
Jan 2006 - Dec 2007
2 yearsEsslingen, Germany
Industrial Electronics Technician / Electrical Technician
I+ME Actia
- Front-end data input: door systems, air conditioning, ESP, diagnostic technology.
- Configuring the airbag diagnostic routine for test equipment.
- ISO 9001 standards.
Jan 2004 - Dec 2006
3 yearsStuttgart, Germany
IT systems management clerk (IHK) training
FBD Bildungspark Stuttgart
HTML website design, integration of Java, ODX OTX modules, C programming, UML diagrams, network technology, GSM - UMTS Vodafone-D2.
SXB stations.
Handover.
Internship at: Vodafone D2 GmbH Stuttgart–Weilimdorf.
Service vehicles with measurement technology for network comparison (D1, D2, Eplus and UMTS).
Prepare the Federal Network Agency vehicle with Qualcomm equipment for field tests.
Analyze the radio network quality in Baden-Württemberg.
Assign parameters to dropped calls.
Evaluate the data sets.
Jan 2003 - Dec 2003
1 yearStuttgart, Germany
Marketing associate
Dekra Akademie
- Database management: training courses, update HTTP website.
- Research, competitor analysis, pricing, telephone service.
- Analyze course utilization.
- Expand the course offerings.
Jan 1995 - Dec 2002
8 yearsSindelfingen, Germany
Industrial electronics technician (production engineering)
Mercedes Benz
- Body shell construction: E-Class and C-Class production engineering.
- Preventive maintenance / servicing: robotics / PLCs / hydraulics / pneumatics / conveyor belt / automation.
Jan 1992 - Dec 2007
16 yearsSwitzerland
Electrical technician / electrical installer
- Work in Switzerland as an electrical installer / technician at postal distribution hubs in Härkingen and Lausanne, Swisscom in Basel, at the Federal Palace in Bern, Alu Menziken near Zurich, and Lonza AG in Visp.
- Building installations, control cabinet construction, light curtain testing, acceptance tests for conveyor belts, industrial installation with pressure vessels for chemical B2B products.
- Instructing colleagues, coordinating tasks, ordering materials.
- Insulation test.
Languages
German
NativeEnglish
AdvancedEducation
Oct 1981 - Jun 1990
Neues Gymnasium Stuttgart-Feuerbach
High school diploma (Abitur) · Germany
Certifications & licenses
Automotive Electronics Training Certificate for CAN Bus and Diagnostics
ABW GmbH Angermünde (near Berlin)
Inland navigation license
Lake Constance License
Driver's licenses AM, A1, A2, A (unrestricted motorcycle)
Driver's licenses B, B1, BE (car + trailer)
Driver's licenses C, C1, C1E (truck up to 7.5t + trailer)
Driver's licenses L, T (work and agricultural machinery)
ISTQB Software Testing
Prototype driving license at BMW test tracks Munich Aschheim and Miramas, France
Sport boat license - sea
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