login
This is a back EMF signal conditioning circuit that can be used to develop high-voltage sensorless motor drivers. When a sensorless algorithm is used to control the BLDC motor speed, the Back EMF (BEMF) signals are used. Based on zero crossing of BEMF signals, motor commutation is decided in the firmware. The signal conditioning circuit has mainly three blocks: the first is a low-pass filter for each phase voltage the second is a comparator circuit for determining the zero crosspoints and the third is a high-speed optocoupler. The optocoupler provides isolation between high-voltage motor driver circuitry and microcontroller.
Signal Conditioner for Sensorless BLDC Operations – [Link]
Please follow and like us:
RELATED POSTS
10 August, 2021 Development board for Brushless Motor, DC Brushed Motor, AC Motors (Pre-Driver)
7 April, 2016 21.1% efficiency with Perovskite solar cells
9 July, 2019 New Kontron SMARC-sXAL4 (E2) Module with up to 8 GByte LPDDR4 Memory Down
28 August, 2018 The Fishino Piranha – A Development Board With 120MHz 32bit Microcontroller
13 June, 2018 Step-down micro DC/DC converters have integrated coil
16 December, 2019 Driving down the on resistance of silicon carbide transistors
Subscribe
Login
0 Comments
