Dual Three-Phase Permanent Magnet Synchronous Machines Vector Control Based on Triple Rotating Reference Frame

Abstract

This paper presents a triple rotating coordinate transformed vector control method for dual three-phase permanent magnet (PM) machines. In the proposed scheme, the control variables are converted to three sets of αβ components directly, which are 120° electric degrees different from each other. It omits the complicated six-dimensional transformed matrix and reduces the computation greatly. The relationship with vector space (VSD) control was mathematically analyzed. By ensuring the consistency of control variables in the three stationary reference frames, the suggested method can not only achieve the same fundamental control performance as VSD but compensate for the imbalance current caused by the harmonics in the back electromotive force. In addition, the proposed method belongs to multi redundancy control in theory, which is maybe a good solution for fault-tolerant operation. Finally, a prototype dual three-phase PM machine was tested. The experimental results are in good agreement with the theoretical analysis.

Sensorless control of permanent magnet synchronous motor based on adaptive back-EMF observer

“…In the vector control method for permanent magnet synchronous motors, 18 this control system usually utilizes PI control to regulate the system control quantity by the mathematical model of the permanent magnet synchronous motor and the electromagnetic torque under the d , q two-phase stationary axis:…”

Dynamic Modeling Approach in View of Vector Control and Behavior Analysis of a Multi-Three-Phase Star Permanent Magnet Synchronous Motor Drive

“…The vector space decomposition (VSD) method is a technique used to perform machine modeling [4]. The machine is decoupled into orthogonal subspaces using this method: a single flux/torque-producing (α-β) subspace and numerous non-flux/torque-producing (x-y) subspaces [6][7][8][9]. Low-order harmonics and phase variable imbalances map onto the x-y subspaces and can be manipulated individually [10][11][12][13].…”

Robust Control Based on Adaptative Fuzzy Control of Double-Star Permanent Synchronous Motor Supplied by PWM Inverters for Electric Propulsion of Ships

“…The difference lies in considering the machine as a six-phase machine with a connected neutral or considering it as equivalent to two three-phase machines with the two neutrals of the two machines separated. In the consideration as two three-phase motors, the modeling approach relies on the use of coordinate transformation based on synchronous rotating coordinate transformation (dq) [5,6].…”