Initial position detection of sensor less BLDC motor drive

my research is sensor less speed control of BLDC motor drive, it's possible to detect ZCD of line voltage. but initial starting speed zero time cont detect ZCD points, if start open loop v/f mean rotor will rotate wrong direction at initial.

any body help me to detect the initial rotor position detection and speed control starting correct direction of sensor less speed control of BLDC motor drive?

if you able pls contact me..

thank you,

Reg,

R.Manikandan,M.E.,(Ph.D)., AP / Department of EEE, The Kavery Engineering College, Mecheri (po), Salem(dt), pin:636453 Tamil Nadu, India. Cell: 9944270473 Email: [e-mail]

Answer 1

[REMA THOMAS]

Dear Sir,

Have you got any solution?

I am facing issue on starting of motor.The motor rotates anticlockwise and then rotates clockwise initially.I need to implement the initial rotor position.If you have any solution,please help .