Nidec SR Drives Ltd (NSRD) undertakes a wide range of development
projects that apply advanced electrical drive technology to
customers’ applications. In
many cases the applications involve new concepts and NSRD works
in close collaboration with the customer to demonstrate in hardware
the technical and commercial potential for the development prior
to moving forward with product-intent design iterations.
From its inception, NSRD has
followed the principle of approaching the design as a system
that includes the motor, electronic controls and, in most cases,
the application environment in which the final drive will operate. This approach ensures that technical
specifications are met and the most appropriate ‘cost to
performance’ ratio is maintained. In order to realise
this design objective, NSRD has a diverse in-house engineering
design, development and testing capability.
Major elements of this capability include:
- Electromagnetic design and modelling for switched reluctance
and other electrical machines.
- Power electronic systems design using semiconductor technology
appropriate to the power level and supply voltages (12 V to
2500V and powers up to 2 MW).
- Mechanical and thermal design for both motors and their associated
- Signal processing system
design including hardware & software
with technology appropriate for the applications:
- Micro processors and micro controllers
- Peripheral electronic system design to support the drive,
including power supplies, EMC filtering, communications protocols,
- Full system modelling and
dynamic performance prediction, often including the customer’s
- Rapid prototyping and fabrication facilities for motors and
- 4-quadrant dynamometer testing capability up to 350kW.
- Laboratory testing facilities to cover most prototyping requirements.
Note that for unusual requirements
that fall outside of the company’s standard capability,
NSRD can call upon the extensive resources of its parent company
Although all development programs are usually moulded to fit
individual customer requirements, the major elements are usually
common and a typical development would flow as illustrated below: