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STM32F PMSM motor driver
#6
UCC21520 ili SI8230 su OK solucija za izolovane drivere.

TSV994 ima slew rate od svega 10V/us a to je za ovakve aplikacije malo.
Biraj OP amp sa slew rate od minimalno 50V/us inače možeš imati
zakasnelu reakciju na brze poraste struja, (recimo pri promeni smera pri malim acceleration /decceleration)
što može dovesti do lavinskog efekta u mosfetima
(Avalanche) i njihovog uništenja pogotovo što je tvoja aplikacija 150V/15A.

U principu, detekciju max. peak struje možeš ograničiti direktno na hardverskom nivou
(što bih ti i preporučio) a MCU neka prati samo nominalnu struju motora.

Peak ograničenje se recimo na IR2110 izvodi haardverski preko SD pina
i u tom slučaju MCU sa tim nema ništa. Duty je tako "skraćen" taman za toliko
koliko je potrebno preko SD pina. Takav način limita peak struje ostaje u zoni
izlaznog stepena, odnosno posle galvanske izolacije od strane MCU, tako da
to može ostati recimo kao SAFE opcija ako radiš i peak detekciju sa nižim nivoom
nad kojom MCU ima uticaj.

I ostali driver čipovi imaju slične mogućnosti

Ja sam uspešno koristio kombinaciju 6N137 + IR2110 ( naravno tamo gde je butstrep bio dovoljan)

Pozz

P.S.
Ne vidim na kojoj frekvenciji rade ti STEVAL inverteri ?
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Messages In This Thread
STM32F PMSM motor driver - by andrics - 04-06-2017, 01:03 PM
RE: STM32F PMSM motor driver - by Želja - 04-06-2017, 01:10 PM
RE: STM32F PMSM motor driver - by andrics - 04-06-2017, 02:15 PM
RE: STM32F PMSM motor driver - by Želja - 04-06-2017, 05:33 PM
RE: STM32F PMSM motor driver - by andrics - 04-06-2017, 08:36 PM
RE: STM32F PMSM motor driver - by Želja - 04-06-2017, 08:59 PM
RE: STM32F PMSM motor driver - by andrics - 04-07-2017, 01:45 PM
RE: STM32F PMSM motor driver - by Želja - 04-07-2017, 02:19 PM
RE: STM32F PMSM motor driver - by andrics - 04-12-2017, 03:01 PM
RE: STM32F PMSM motor driver - by Želja - 04-12-2017, 03:12 PM
RE: STM32F PMSM motor driver - by andrics - 04-12-2017, 03:16 PM
RE: STM32F PMSM motor driver - by Želja - 04-12-2017, 03:57 PM
RE: STM32F PMSM motor driver - by Želja - 04-12-2017, 06:34 PM
RE: STM32F PMSM motor driver - by Želja - 04-12-2017, 08:30 PM
RE: STM32F PMSM motor driver - by Želja - 04-12-2017, 08:42 PM
RE: STM32F PMSM motor driver - by andrics - 04-12-2017, 10:58 PM
RE: STM32F PMSM motor driver - by andrics - 04-12-2017, 11:02 PM
RE: STM32F PMSM motor driver - by Želja - 04-13-2017, 07:26 AM
RE: STM32F PMSM motor driver - by andrics - 04-13-2017, 10:48 AM

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