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 allows engineers to drive a 3-phase Everlasting Magnet Synchronous Motor ( PMSM) or AC brushless motor utilizing a complicated sensorless Area 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 so on.
The benefit of the design is that it’s less complicated and extra economical. The reference design permits the person to observe and tune numerous parameters utilizing the Graphical Consumer Interface offered by the corporate. The reference design is extremely customizable and permits the person to pick the perfect switching frequency and management frequency to adapt the management dynamics appropriate to the appliance necessities. This allows any designer to make the suitable 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 slightly than an costly present sensor, due to this fact, driving down the BoM price and variety of elements. This reference design is suitable with different present Motor Management Reference Platform with exterior energy stage delivering as much as 1.5KW at 230VAC.
Determine exhibiting display screen of the GUI (Supply: Renesas)
Options of the Reference Design
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- 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
