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Jan Wiener, Power Electronics Hardware Development Engineer from Geiselhöring

Jan Wiener

Dipl.-Ingenieur

Ingenieurbüro Wiener

Power Electronics Hardware Development Engineer

94333 Geiselhöring

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not available by 31/12/2012

Hourly-/Daily rates: k.A.

Other:

Last update: 24.04.2012 09:22

CAD development Electro-technology/control engineering

Attachments

- none -

Language skills

german (first language)english (business fluent)

Abilities, knowledge, experiences:

Custom Made Power Electronics
modelling, computation, simulation and tweaking of switch mode power converter transfer functions
Switch Mode Power Amplifiers (Class-D and Class-S Amplifiers)
Switch Mode Power Supplies (AC-DC Converter)
DC-DC Converter
active Power Factor Correction (PFC single stage and multiple stage)
design and specification of custom made magnetics
design of planar transformers and inductors
production optimised PCB design
development of EMC optimised assemblies

Products implemented in all sorts of topologies guarantee the optimal implementation of your requirements. Consumer Electronic products with the lowest possible solution in cost as well as redundant and fail-proof power supplies which assure survival in emergency situations are covered the same in our service portfolio.

Converter Topologies:

load independant Class-D amplifiers in half bridge, full bridge and grounded bridge configuration
Flyback Converter also quasi-resonant
Forward Converter in half bridge and full bridge configuration
Resonant Half Bridge Converter
Buck / Boost Converter
active Power Factor Correction (PFC single stage and multiple stage)
tweaking of control loop transfer functions of switch mode power converters

Electromagnetic Compatibility and Product Safety:

EMC-optimised construction und layout of assemblies
attendance of EMC-tests with subsequent design optimisation
execution of safety approvals (CE, TÜV, NRTL, CSA, CCC)

Dimensioning of Customised Magnetics:

torroidal chokes
storage transformers (flyback applications, also quasi-resonant)
switch mode tranformers (forward converter applications, also resonant)
planar inductors and transformers

Analogue Signal Processing and Control Engineering:

control loop optimisation of switch mode power converters
ultra low noise and linear pulse width modulators
active / passive filter synthesis
high definition Delta-Sigma analogue to digital conversion
professional audio circuit technology
low noise microphone preamplifiers

References:

position:	Hardware Development Engineer
company:	K-tronik GmbH (http://www.k-tronik-gmbh.de/)
sector:	Electronic Service Provider
location:	Munich, Germany
period:	4 months (01/2011 - 04/2011)
tasks:	Team leader for Inter-Connect-Module of MTR390 engine ("Tiger-Helicopter") at MTU Aero Engines Munich (http://www.mtu.de/).
operations:	industrialisation of Inter-Connect-Module dimensioning of lightning protection for the complete assembly attendance of external PCB layout process stress analysis according to DO-160 standard

position:	Project Leader
company:	BOSCH Communications Systems - EVI-Audio GmbH (http://www.boschcommunications.com)
sector:	professional communications electronics
location:	Straubing, Germany
period:	1 year, 9 months (04/2009 - 12/2010)
tasks:	Project leading of international industrialised product developments.
operations:	project management according to "BOSCH - Product Creation Process" ("PeP", "PcP", ...) cost, quality and schedule tracking reporting to upper management

position:	Engineering Responsible
company:	BOSCH Communications Systems - EVI-Audio GmbH (http://www.boschcommunications.com)
sector:	professional communications electronics
location:	Straubing, Germany
period:	3 years, 4 months (09/2007 - 12/2010)
tasks:	Coordination of international and interdisciplinary acting project teams during the complete product development process. Requirements management and conception of new developments.
operations:	technical leading of international and interdisciplinary acting project teams industrialisation of products in Germany and China (Zhuhai) attendance of EMC and safety approvals prototype development from concept to series maturity coordination of production start-ups in Germany and China

position:	Designing Engineer for Audio Power Electronics
company:	BOSCH Communications Systems - EVI-Audio GmbH (http://www.boschcommunications.com)
sector:	professional communications electronics
location:	Straubing, Germany
period:	5 years, 1 month (12/2005 - 12/2010)
tasks:	Development of professional audio power amplifiers (Class-D Switch Mode Power Amplifiers) in the power range 500 W - 2.5 kW per channel. Development of active speakers and multi channel systems in the professional audio market segment.
operations:	competitor analysis research on linear pulse width modulators modeling/tweaking of control loop transfer functions of switch mode power converters feasibility studies (Matlab, Mathcad, PSpice, LTspice etc.) electrical, thermal and mechanical dimensioning of assemblies layout of switch mode power assemblies prototyping, debugging, etc. evaluation of prototypes against commercial requirements specifications speaker development (active/passive) until series maturity training of students and internal staff members

Temporal and spatial availability.:
I take over remote projects which can be processes 70-100% in my own laboratory. The laboratory is equipped to develop and debug assemblies with power ratings between 5 W and 5 kW. Feel free to ask for capacities.

Other:
For further information please visit my website: http://www.ib-wiener.de

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