Transcription of PWM management for 3-phase BLDC motor drives …
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PWM management for 3-phase BLDC motor drives …
AN2009 Rev 21/39AN2009 APPLICATION NOTEPWM management FOR 3-phase BLDC motor drives USING THE ST7 MCINTRODUCTIONThe ST7MC microcontroller family is the second generation of the 8-bit microcontroller family dedicated to the driving of 3-phase brushless motors. Permanent Magnet Brushless DC mo-tors are replacing DC brush motors more and more in many applications due to advantages such as higher efficiency, quieter operation and better reliability. These motors require the control of an inverter stage. In most cases the switching devices are MOSFET transistors or IGBTs and are organized in a three-phase bridge with free-wheeling diodes as shown in Figure 1. There are two methods of controlling the motor and reading information back from the rotor. These are called the sensor and the sensorless methods.
AN2009 Rev 2 1/39 AN2009 APPLICATION NOTE PWM MANAGEMENT FOR 3-PHASE BLDC MOTOR DRIVES USING THE ST7MC INTRODUCTION The ST7MC microcontroller family is the second generation of the 8-bit microcontroller family
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