PROJECT TITLE :
HF Test Current Injection-Based Self-Sensing Control of PMSM for Low- and Zero-Speed Range Using Two-Degree-of-Freedom Current Control
This paper deals with an innovative self-sensing control scheme based mostly on test current instead of voltage injection. Using 2-degree-of-freedom current management, one can overcome the bandwidth limitations that created take a look at current injection unattractive throughout the last 20 years. The 2-degree-of-freedom control theme consists of a model-primarily based dynamic feedforward management to line the reference response and model reference tracking controllers providing disturbance rejection and position error signals for self-sensing control. Since two-degree-of-freedom control may be a model-based management scheme, the compensation for secondary saliencies is inherently included in the precontrol. It's analytically shown that, in the case of alternating take a look at current instead of voltage injection, simply the precise knowledge, in general, of the present- and position-dependent secondary diagonal part of the inductance matrix is needed within the case of inductance saliency-based mostly self-sensing management. The effectiveness of the proposed method is proven by experimental results.
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