Method of slip synthesizing induction motor

Abstract

Abstract PURPOSE: To enable simple compensation of slip frequency with respect to the variations of constants of induction motor adapted fro conversion to digital and specially control by microprocessor by slip synthesizing slip frequencies at all angles. CONSTITUTION: Digital value Ws proportional to externally given slip angular frequency is added to previous slip angle θs held by a latch circuit 14 by an adder 16. The sum from the adder 16 is applied through a delay circuit 15 into a latch circuit 14. A signal corresponding to this new slip angle θs is retained by the latch circuit 14 by means of a clock pulse at every sampling clock period Δt. The slip angle signal θs as the output of the latch circuit 14 is added to the rotary angle signal θ from a rotary position detector 12 by an adder 13 to thus become an output angle signal θo as the angle signal slip synthesized. COPYRIGHT: (C)1979,JPO&Japio

Inventors

• 👤 Ryoichi Kurosawa

Bibliographic Details