topic Re: MCSA with PowerQuad in MCX Microcontrollers

MCSA with PowerQuad

erikraynolds — Sun, 27 Oct 2024 16:38:41 GMT

Hello,

Is it possible to use PowerQuad DSP Coprocessor for motor current signature analysis - FFT based ?

Any example of phase current FFT effectivnes with PowerQuad on 3 phase currents?

Thanks.

Re: MCSA with PowerQuad

Celeste_Liu — Fri, 01 Nov 2024 08:37:12 GMT

Hello ,

Thanks for contacting NXP Tech Support. I am here to support you.

[Q1] Is it possible to use PowerQuad DSP Coprocessor for motor current signature analysis - FFT based ?

[A1] Yes, it is possible.

[Q2] Any example of phase current FFT effectivnes with PowerQuad on 3 phase currents?

[A2] The frdmmcxn947_powerquad_benchmark_fft demo could be a useful reference for your questions. By converting and inputting your three-phase current data into an appropriate format, it may meet your needs.

To get the demo, download the FRDM-MCXN947 SDK. Refer to Importing an SDK Package into MCUXpresso IDE and install it in MCUXpresso. Open it as below picture shows.

Hope the above information is helpful to you.

BR,

Celeste

Re: MCSA with PowerQuad

erikraynolds — Mon, 28 Oct 2024 06:54:18 GMT

Can it handle 3 Current content in real time?

Re: MCSA with PowerQuad

Celeste_Liu — Fri, 01 Nov 2024 08:40:58 GMT

Hi,

The PowerQuad DSP coprocessor integrated with the NXP MCX N series has the potential for real-time three current analysis, but this indeed depends on multiple factors.

The real-time data processing capability of the system is affected by many aspects, including the sampling rate and resolution of the ADC used for current signal acquisition, the computational complexity and efficiency of the FFT algorithm, system latency including data acquisition, processing, output or control operations, and the clock speed and available resources of the microcontroller with the PowerQuad coprocessor.

Regarding the PowerQuad DSP parameters in the MCX Nx4x series, you can refer to "Chapter 18 PowerQuad DSP Coprocessor and Accelerator" in MCXNx4xRM.

BR,

Celeste