LINEARLY INTERPOLATED FLUX WEAKENING FOR ANISOTROPIC PERMANENT MAGNET SYNCHRONOUS MACHINES

Given the increasing application of permanent magnet synchronous machines in embedded motor drive solutions, a new algorithm to compute the current references for field oriented control during flux weakening operation is proposed. The steps to implement the new solution are explained. Two other state-of-the-art algorithms are considered for comparison purposes: the real-time computation of analytical quartic roots and the exploitation of lookup tables. The benchmark is realized in terms of computational resources usage of the micro-controller TMS320F28069M. When compared to the above mentioned state-of-the-art solutions, the proposed algorithm has shown superior performance in terms of execution time and memory allocation.