2 Pole BLDC Motor Driving Circuit Single phase

2 -Pole BLDC Motor Driving Circuit Single phase – Single pulse Driven BLDC Torque and current waveforms

Single phase – Two pulse Driving Circuit & Torque waveform Two phase – Two pulse Driving Circuit & Torque waveform

Three phase – Six pulse Driving Circuit & Torque waveform

BLDC with controller

120° MAGNET ARCS AND 180 ° SQUARE WAVE PHASE CURRENT PMBLDC

A+ A+ A- B+ B- C- C- B- B- C+ C+ A- A- B+ B+ A+ B+ B- C+ C- C- C-

1 ab. U 3 bc. U 5 ca. U 4 ab. L 6 bc. L 2 ca. L 1 ab. U 4 ab. L 0°- 60° 3 bc. U 6 bc. L 5 ca. U 2 ca. L 1 ab. U 3 bc. U 5 ca. U 4 ab. L 6 bc. L 2 ca. L 60°- 120°- 180° 1 ab. U 3 bc. U 5 ca. U 4 ab. L 6 bc. L 2 ca. L 180°- 240°- 360°

0°- 60° B 1 C 2 B 2 C 1 A 2 B 1 C 2 B 2 C 1 A 1 C 2 B 2 A 2 C 1 A 2 180°- 240°- 300°- 360° B 1 B 1 C 2 B 2 A 1 120°- 180° 60°- 120° C 1 A 2 C 2 B 2 A 1 C 1 A 2

180° MAGNET ARCS AND 120 ° SQUARE WAVE PHASE CURRENT PMBLDC

A+ A+ A+ A- AB+ B- C- B+ B- BC+ A+ C+ C- C-

1 a. U 4 a. L 3 b. U 5 c. U 6 b. L 2 c. L 1 a. U 3 b. U 5 c. U 4 a. L 6 b. L 2 c. L 0°- 60°- 120°- 180° 1 a. U 3 b. U 5 c. U 1 ab. U 3 bc. U 5 ca. U 4 a. L 6 b. L 2 c. L 4 ab. L 6 bc. L 2 ca. L 180°- 240°- 300° 1 ab. U 3 bc. U 5 ca. U 4 ab. L 6 bc. L 2 ca. L 300°- 360°

0°- 60° B B C A C A 240°- 300° 180°- 240° B A 120°- 180° 60°- 120° 300°- 360° B C A C

a) Motor cross section & flux pattern b) Magnetic Equivalent Circuit