PWM Schemes

From Open-BLDC
Jump to: navigation, search

PWM Schemes describe the way the gates of the three half bridges are being controlled.

Most common PWM Schemes are so called trapezoidal High PWM Low on and trapezoidal High on Low PWM but there are also other kinds of trapezoidal PWM schemes.

Trapezoidal PWM Schemes

Here some pictures of the different possible trapezoidal PWM schemes:

H PWM L ON

H pwm l on.png

H ON L PWM

H on l pwm.png

PWM ON

Pwm on.png

ON PWM

On pwm.png

PWM ON PWM

Pwm on pwm.png

Sinusoidal PWM Scheme

TODO