3 ms·
Field-oriented Control schemes modulate phase currents at high frequency; the feedback loop must be much faster than the motor phases. Until fairly recently, t
by topspin 4mo ago
Field-oriented Control schemes modulate phase currents at high frequency; the feedback loop must be much faster than the motor phases. Until fairly recently, this stuff was the exclusive province of dedicated ICs (Trinamic et al.) and FPGA. Today, FoC can be done in (mostly) software with MCUs.
Fast feedback loops are also necessary in SMPS, another area where precision, low latency MCU peripherals and software are actively displacing traditional approaches.
- tomcam 4mo agoI didn’t know that. Thanks for letting me… meet the FOCers I’ll see myself out of the Internet now.
- imtringued 4mo agoBut even if you update your PWM signal on every PWM cycle, you won't go much beyond 30kHz. At some point you're running into high switching losses on your MOSFETs.
- namibj 4mo agoThere are solutions to those worries.... https://epc-co.com/epc/products/gan-fets-and-ics/epc23102 https://epc-co.com/epc/products/gan-fets-and-ics/epc23102