Reference Design for 3-Section PMSM Drive

This reference design from Renesas is a single board inverter primarily based on RX111 system from the highly effective 32-bit RX microcontroller household. It additionally features a low-voltage MOSFETs energy stage and a communication stage. The reference design permits engineers to drive a 3-phase Everlasting Magnet Synchronous Motor ( PMSM) or AC brushless motor utilizing a sophisticated sensorless Discipline Oriented Management algorithm. The reference design can be utilized to make motor drivers for drones, compressors, air-con, followers, air extractors, pumps and industrial drives, and many others.

The benefit of the design is that it’s less complicated and extra economical. The reference design permits the consumer to observe and tune varied parameters utilizing the Graphical Person Interface supplied by the corporate. The reference design is extremely customizable and permits the consumer to pick the perfect switching frequency and management frequency to adapt the management dynamics appropriate to the appliance necessities. This permits any designer to make the appropriate compromise between system dynamics, CPU load and total effectivity

The reference design permits calibrating of any 3-phase Brushless AC/DC motors utilizing an Auto-tuning process. The reference design can be utilized in a sensorless mode which reduces the design complexity. For instance, it employs three shunt resistors for the section present measurement somewhat than an costly present sensor, subsequently, driving down the BoM value and variety of parts. This reference design is suitable with different current Motor Management Reference Platform with exterior energy stage delivering as much as 1.5KW at 230VAC.

Determine displaying display screen of the GUI (Supply: Renesas)

Options of the Reference Design

    • Reminiscence Footprint: 30 KB Flash / 3 KB RAM
    • PWM Frequency: 16 kHz
    • Management loop Frequency: as much as 16 kHz
    • CPU time out there: 45%
    • Auto-tuning PI present: Allow by default
    • Motor calibration: Allow by default
    • Flux weakening algorithm: Allow by default
    • Voltage bus monitoring: Allow by default
    • Fail-safe mechanism: Allow by d

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