A method for direct torque control of a dual-three-phase permanent magnet synchronous motor
A direct torque control, dual three-phase permanent magnet technology, used in motor control, motor generator control, electronic commutation motor control, etc., can solve the problems of unstable switching frequency, increased system loss, and large harmonic current. , to achieve the effect of constant switching frequency, suppressing torque ripple and reducing harmonic current
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[0026] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0027] The method specifically includes the following steps:
[0028] Step 1: Construct a synthetic voltage vector to form a new switch table. The specific method is as follows:
[0029] Step 1.1: According to the vector space decoupling principle, decompose the dual-three-phase system from a six-dimensional space into three mutually orthogonal two-dimensional subspaces: αβ, xy and o1o2, in which only the components of the αβ subspace participate in the electromechanical energy conversion , and the xy harmonic plane will have a large harmonic current due to its small impedance.
[0030] Step 1.2: From the spatial distribution of voltage vectors, it can be known that the large and medium vectors in the same direction in the αβ plane correspond to the small and medium vectors in the opposite direction in ...
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