HARMONIC COMMUTATION APPLIED TO AN EXPERIMENTAL STATIC INVERTOR AND ITS APPLICATION TO BRUSHLESS D.C. MOTORS.
ROYAL AIRCRAFT ESTABLISHMENT FARNBOROUGH (ENGLAND)
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A method of commutating the thyristors in a brushless d.c. motor was required which is simple and more reliable than existing methods. A method termed harmonic commutation is described which is closely analogous to interpole commutation in continuous current machines. A laboratory model of an invertor has been constructed to show the feasibility of the scheme. Harmonic commutation is suitable for constant speed motor application i.e. induction motor drives, but its use in variable speed application would require unduly heavy commutating components. Author
- Electrical and Electronic Equipment
- Electricity and Magnetism