16. Assessment of current status
• Progress made
Load characterised
Spice SimulaUons completed
Power switch technology idenUfied and evaluated
PWM control circuit designed and verified
uC selected and soWware under development
1st pass prototype hardware
• Issues idenUfied
IniUal tests show that controlling parasiUc elements is extremely
difficult
Probable that mulUple PCB iteraUons will be required to opUmise.
Delivering clean pulses to the inter electrode gap will require a lot
of design effort
The research leading to these results has received funding from the European Union
Seventh Framework Programme (FP7/2007‐2013) under grant agreement № 262072,
µECM – Micro ECM for SMEs, Research for the benefit of SMEs FP7‐SME‐2010‐1
23. Test Rig results: Electrolytes
• Sodium Nitrate (NaNO3) – Best
• Sodium Chloride (NaCl) – Good
• Phosphoric Acid (H3PO4) – Poor
• Increased concentraUon increases MRR but
reduces localisaUon.
The research leading to these results has received funding from the European Union
Seventh Framework Programme (FP7/2007‐2013) under grant agreement № 262072,
µECM – Micro ECM for SMEs, Research for the benefit of SMEs FP7‐SME‐2010‐1
28. Summary: Work Achieved
• Modelling of IEG
• Development of simulaUons and soWware
based around model
• Development of ECM PSU
• Development of test rig and validaUon of
model by test
• Ongoing design and development of a
demonstrator machine
The research leading to these results has received funding from the European Union
Seventh Framework Programme (FP7/2007‐2013) under grant agreement № 262072,
µECM – Micro ECM for SMEs, Research for the benefit of SMEs FP7‐SME‐2010‐1