dual CRD300DA12XM3 or CRD600DA12XM3

drachtster

We plan to purchase 1 CRD300DA12-XM3 but may run in to excessive current (>360 A rms per phase) in a later stage. I noticed that paralleling the 300 kW inverters in the CRD600 to drive a single motor is possible. Is this also true for 2 units of CRD300DA12-XM3 : paralleling them to drive a single motor? Or would that be at the risk of synchronisation issues?

Forum_Moderator

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ShamarChristian

Hello,

The CRD600DA12E-XM3 kit is made up of a thermally and electrically optimized parallel arrangement of two 300kW stages.

While operating two CRD300DA12-XM3 kits in parallel is theoretically possible, it may be difficult to operate practically. There would be challenges bussing the two together to a DC link with low parasitic inductance, along with difficulties interfacing the signal chain to drive all of the devices from two MCUs. This would be outside the scope of what Wolfspeed provides with a 300kW kit.

The CRD600DA12E-XM3 is sufficiently designed and equipped with the necessary hardware for this purpose. For the mentioned current levels desired, we recommend getting the CRD600DA12E-XM3 for performance and practical operation. Operation of the kit is covered in the User Guide documentation available below.

https://assets.wolfspeed.com/uploads/2024/01/Wolfspeed_PRD-06975_XM3_Three-Phase_Inverter_Reference_Design_User_Guide.pdf

TBhatia

Hi, I hope that this answered your question. I will close this discussion for now but if you have a follow up question, please "Start a New Discussion" and we would be glad to support you further.