A three-phase Permanent Magnet Synchronous Motor (PMSM) sensorless FOC (Field Oriented Control) is typically found in a number of home appliances such as washing machines, dishwashers, dryers, refrigerators, air conditioners and pumps.
Key design considerations for a three-phase PMSM sensorless FOC include power efficient and acoustically quiet motor operation to meet governmental efficiency standards, low BOM cost and a compact, scalable FOC form factor.
“And that is precisely why Atmel’s XMEGA AVR (D or E series), coupled with our AVR1636 reference design, offers developers versatile integration capabilities along with comprehensive application support – facilitating FOC implementation that allows power efficient and acoustically quiet motor control application,” an Atmel engineering rep told Bits & Pieces.
“More specifically, there are three 16-bit timer/counters with up to four output compare or input capture channels, a high-resolution extension and advanced waveform extension (AWeX), an 8-channel Event System which allows peripherals to directly send, receive and react to synchronous or asynchronous events in a short, guaranteed response time.”
Additional integrated features include a feature-rich 300KS/s 12bit ADC with programmable gain amplifier up to 64x – with temperature, supply voltage and reference inputs; EEPROM for configuration parameters storage; two USART, one SPI and one I2C Serial Interfaces for system communication.
In terms of software and application support, Atmel offers AVR1636 reference design hardware; a firmware and PC configuration utility; AVR1610 pre-certified Class B library and design guide; Atmel Studio 6; Atmel Software Framework; Atmel Gallery; and free software libraries of production-ready source code.
Interested in learning more about building a three-phase PMSM sensorless FOC with Atmel’s AVR XMEGA? Be sure to check out some of the links below.
Is it no longer possible to download the “firmware and PC configuration utility”?