Electronics & Drives - iSCREAM

Integrated Sensorless Control for a Switched Reluctance Motor
#PowerElectronics #Microelectronics #Master Student Project at @ElectronicsDrv and @HS_Reutlingen

[Electronics & Drives - RIDE @EDRT_RIDE]

Hello Twitter
We are students from @HS_Reutlingen and @ElectronicsDrv designing an ASIC on the base of our predecessors @EDRT_iSCREAM.
We are excited to share our project! Expect interesting content in the upcoming time 👀🧠🛠️.
#PowerElectronics #Microelectronics

[Electronics & Drives - iSCREAM @EDRT_iSCREAM]

What a journey it was! Thanks a lot to everyone interested in our project.

While we say goodbye, another team will work on cool improvements of the ASIC such as automatic start position detection and a digital interface.

So head over to @EDRT_RIDE to stay tuned!

[Electronics & Drives - iSCREAM @EDRT_iSCREAM]

And for the lab measurements, well, a real switched reluctance motor!

[Electronics & Drives - iSCREAM @EDRT_iSCREAM]

It's a match! On the left you can see the final simulations just before chip tape-out and on the right the latest ASIC measurements from the lab on real hardware.
#electronics #simulations #ASIC

[Electronics & Drives - iSCREAM @EDRT_iSCREAM]

For the simulaton we utilized VHDL-AMS to descibe a variable inductance modeling the changing inductance of a switched reluctance motor while spinning.

[Electronics & Drives - iSCREAM @EDRT_iSCREAM]

From idea to concept to design to reality!
Here you can see the different project stages which we passed in the last months.
#electronics #engineering #ASIC

[Electronics & Drives - iSCREAM @EDRT_iSCREAM]

*without any position sensors!

[Electronics & Drives - iSCREAM @EDRT_iSCREAM]

The iDream comes true! The ASIC is able to control a switched reluctance motor with a DC link voltage of 300V and 5400 rpm. #ASIC #electronics #Engineering

[Electronics & Drives - iSCREAM @EDRT_iSCREAM]

@bcjanmay Tests with mains voltage. Until now our tests were conducted using 60V DC but the motor and hopefully our electronic is capable of more!

[Electronics & Drives - iSCREAM @EDRT_iSCREAM]

Preparations for the next step of function testing!
#electronics #Engineering #ASIC

[Electronics & Drives - iSCREAM @EDRT_iSCREAM]

Here you can see a little deeper inside the mechanics of our SRM! One can easily identify the distict coils and the rotor. No permanent magnets necessary! #electronics #Engineering

[Electronics & Drives - iSCREAM @EDRT_iSCREAM]

Congratulations guys!

[Electronics & Drives - PAPAYA @EDRT_PAPAYA]

We made it. Within 4 months we designed a CMOS ASIC based on the @XFAB_FOUNDRY's analog IP library for our #Master project. The layout data has already been sent in and we look forward to holding the chip in our hands and testing it. Stay tuned!
#Microelectronics @ElectronicsDrv

[Electronics & Drives - iSCREAM @EDRT_iSCREAM]

More impressions from our last lab testing day!

#electronics #engineering #circuitdesign

[Electronics & Drives - iSCREAM @EDRT_iSCREAM]

Diving into our ASIC's details manufactured by @XFAB_FOUNDRY in a 350 nm process. In the pictures below you can identify the analog and digital parts of our circuit as well as our crystal clear logo!
#electronics #engineering #semiconductor

[Electronics & Drives - iSCREAM @EDRT_iSCREAM]

So if you are planning to use a 8/6 switched reluctance motor in your application you just need some current sensors, a power stage and our ASIC! No need to worry about position detection or current control anymore.

[Electronics & Drives - iSCREAM @EDRT_iSCREAM]

Putting the "I" into "IC": Our SR-Motor-Control-ASIC integrates the analog current control loop, the digital state machine for phase activation and the digital logic to detect the rotor position via the PWM frequency. #electronics #microelectronics #engineering

[Electronics & Drives - iSCREAM @EDRT_iSCREAM]

Here you can see the state machine inside our ASIC switching through its internal states!

[Electronics & Drives - iSCREAM @EDRT_iSCREAM]

The ASIC is in place and running! What a relief after two terms of hard work and dedication. More details to come #microelectronics #engineering

[Electronics & Drives - iSCREAM @EDRT_iSCREAM]

Here is a more „metallic“ view!

[Electronics & Drives - iSCREAM @EDRT_iSCREAM]

The first glimpse of our chip in reality!
Due to a little bonding mistake this specific one becomes a viewing example but fortunately we got 49 others. #ASIC #microelectronics #semiconductor