Lead Power Electronics Engineer

Lead Power Electronics Engineer

Dyson

Malmesbury, United Kingdom

About the role

The Lead 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;
• 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.

As a Lead Engineer, 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;
• 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.

About you

Education and experience:

• Minimum BEng/MEng degree in Electrical & Electronic Engineering or other relevant discipline.

Minimum technical knowledge:

• Power Electronics:
  • Experience in motor inverter design and motor control, particularly brushless DC motors, servo or stepper motors;
  • Knowledge of heater control hardware, control schemes and heater protection approaches desirable;
  • General knowledge of power electronic devices, including silicon based IGBTs, MOSFETs and wide bandgap technologies;
  • Understanding of device characteristics and issues with switching behaviour in real circuits, as well as power switch driver design;
  • Device selection - Interpretation of datasheets and knowledge of design methods to confidently select the lowest cost devices while achieving reliability targets;
  • Knowledge and experience of using power hybrid modules and power SoC modules (e.g. drivers and power switches in one device);
  • Thermal management approaches for surface mount and through hole devices;
  • SMPS and linear regulator power supply design;
  • Design of power electronics for both low voltage and mains voltage systems.
• Control circuit design:
  • Understanding of techniques for accurately monitoring small signals in high power, electrically noisy environments;
  • Excellent knowledge of analogue signal conditioning (e.g. op-amp circuit design) and ideally digital signal processing approaches.
• Design Tools:
  • Schematic capture using Altium Designer, Mentor Graphics or other main stream tools;
  • Use of SPICE based simulation tools such as Simetrix and LTspice;
  • Design calculation tools such as Mathcad, Matlab, Excel.
• Design Techniques:
  • Circuit simulation and tolerance analysis;
  • Robust design including FMEA techniques;
  • Good quality engineering process understanding and appreciation;
  • Design for high volume manufacture;
  • 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 to engineers and up to executive level;
• 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.

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