Looking for an AC/DC converter for the DRV8305N 3-Phase Motor Drive BoosterPack Evaluation Module

Hi,

At 45V, 20A its a 900W supply, if the output voltage has to be variable between 4.4V to 45V then I recommend you use a two stage approach.

A single phase PFC, using the UCC28180, TI has a 900W design TIDA-00443 which could be used with a phase shifted full bridge which can use the UCC3895, UCC28950 or UCC28951-Q1.

There is a UCC3895 based 350W phase shifted full bridge design available which could be scaled to 900W, http://www.ti.com/tool/PMP9622, the nominal output voltage is 44V so it can be trimmed down by adjusting the setpoint on the secondary side control circuit.

Regards

Peter

Hi ChrisClearman,

 

Thank you very much for your advice.  I tried to search for the bench top DC supply and found a nice 60V 10A DC power source from Amazon.

 

I’m not sure if I understand everything right.  Based on the description of DRV8305N 3-Phase Motor Drive BoosterPack Evaluation Module, it’s a combination of DC to AC inverter, current sensor, and voltage sensor.  To control the 2MTR-DYNO synchronous motor run at its rated speed, the DC bus voltage for the inverter should be 1.414 times the rated AC RMS voltage of the motor .  The synchronous motor in 2MTR-DYNO is rated for >60V, 7.1A continuous, which means the input voltage for the DRV8305N BoosterPack should be at least 1.414*60=85V.  This is way above the 45V maximum input voltage limit of the DRV8305N BoosterPack.  It still seems to me that I have to choose another synchronous motor with a much smaller input voltage.

 

I noticed that TI has a LVBLDCMTR which is rated for 24V.  But it has no built-in encoders.  Does TI has a similar product with built-in encoders?

 

I’m a non-electrical engineering Ph.D. student, so I just want to make my motor control experiment as convenient as possible.

 

Thanks.

Hi Peter,

Thank you very much for the solutions you have provided.  I looked through your suggestions, but the technical part you mentioned is kind of difficult for me to follow.

I’m a non-electrical engineering Ph.D. student looking to buy some equipment to conduct a motor control experiment for my dissertation.  I simply want a convenient AC/DC converter which could provide me with the required input power.

Thank you.

The Teknic motors used in 2MTR-DYNO require >60V for full torque generation, but we often run them @ 24-36V.  For the purposes of running to various positions, speeds, or some level of torque it works just fine.

This is the only low voltage motor we sell with encoders.

Hi ChrisClearman,

OK, this works for me.

Thank you very much for your help.