Senior Power Electronics Engineer


Motors and Power Systems
Malmesbury - United Kingdom


Dyson offers a unique opportunity for a talented and experienced Senior Power Electronics Engineer in the Technical Research Team, within Dyson’s Research, Design and Development (RDD) department; based in Malmesbury, Wiltshire, U.K.


The Senior Power Electronics role will involve: 

• The design of motor inverters and control for brushless DC, servo and stepper motors. 

• The design of heater control hardware and associated protection systems. 

• Ensuring designs can comply with relevant EMC/EMI standards and modifying design where needed to ensure this is the case. 

• Thermal management design of power electronics systems 

• Design of both mains and battery powered electronics to meet global requirements. 

• Power converter design. 

• Working with different product teams to gain an in depth product understanding, while using knowledge of the latest technologies to create innovative power electronics systems and solutions. 

• Research into new technology and investigating ways of incorporating this technology into future products. 

• Use of simulation and PCB design software to create prototypes. 

• Strong lab skills to build and test prototypes with minimal supervision. 

• Line management of staff. 

As a senior employee, the successful applicant will be expected to: 

• Develop the concept, proving key technologies and demonstrating the system feasibility 

• Produce clear, well written documentation prior to handover to the development teams 

• Take technical responsibility for motor drive, heater control and associated power electronics content of a project. This may expand to the responsibility for multiple small concurrent projects, supported by a number of team members reporting to the Power Electronics Technical Leader and Research Manager for Power Electronics 

• Demonstrate designs are safe, robust, cost effective and fit for purpose for a high volume manufacture environment, through detailed laboratory testing, simulation and analysis 

• Assist in the personal development of junior team members. 


Education and experience: 

• Minimum BEng/MEng degree in Electrical & Electronic Engineering or other relevant discipline Minimum technical knowledge: 

• Power Electronics: o Experience in motor inverter design and motor control, particularly brushless DC motors, servo or stepper motors 

o Knowledge of heater control hardware, control schemes and heater protection approaches 

o General knowledge of power electronic devices, including silicon based IGBTs and MOSFETs through to emerging wide bandgap technologies 

o Understanding of device characteristics and issues with switching behaviour in real circuits as well as power switch driver design 

o Device selection - Interpretation of datasheets and knowledge of design methods to confidently select the lowest cost devices while achieving reliability targets 

o Knowledge and experience of using power hybrid modules and power SoC modules (e.g. drivers and power switches in one device) 

o Thermal management approaches for surface mount and through hole devices 

o SMPS and linear regulator power supply design o Design of power electronics for both low voltage and mains voltage systems 

• Control circuit design: 

o Excellent understanding of techniques for accurately monitoring small signals in high power, electrically noisy environments. o Excellent knowledge of non-ideal behaviour in analogue to digital converters, op-amps, comparators, voltage references etc. including ways to manage these non-ideal characteristics. 

o Knowledge of ultra-low power circuits for maximising battery standby life. 

• Design Tools: 

o Schematic capture using Altium Designer, Mentor Graphics or other main stream tools 

o Use of SPICE based simulation tools such as Simetrix and LTspice 

o Design calculation tools such as Mathcad, Matlab, Excel. 

• Design Techniques: 

o Circuit simulation and tolerance analysis o Robust design including FMEA techniques 

o Good quality engineering process understanding and appreciation 

o Design for high volume manufacture 

o PCB layout – size/cost minimisation while achieving layouts for inherently good EMC compliance and thermal design. 

Essential behavioural skills: 

• The ability to take a leadership position within a project 

• Good analytical ability and attention to detail 

• Ability to communicate appropriate, concise and accurate information in written and verbal format 

• Ability to adapt or generate imaginative and innovative ideas, in line with core Dyson values 

• Ability to multi-task and plan effectively when working with a variety of project teams. 

• Excellent time management skills and ability to prioritise tasks 

• Excellent team working skills. Essential practical skills: 

• Ability to build, test and modify prototypes accurately, safely and with minimal supervision 

Additional experience that is desirable: 

• Experience with Flowtherm or similar thermal modelling packages 


Benefits summary

• 27 days holiday plus eight statutory bank holidays

• Pension scheme

• Performance related bonus

 • Life assurance

 • Sport centre

 • Free on-site parking

 • Subsidized café and restaurants

 • Discounts on Dyson machines

Posted: 03 September 2019