Design And Research Of High Inertia Loads Electric Drive Systems Based On Stater Current Control

High inertia loads, one of the major load in industry, have a wide range of applications in metallurgy, electric power, chemical, water, heat sectors such as industrial production and daily life. The characteristics of high inertia loads in the electric transmission system make it difficult to choose the drive motor. Among the commonly used drive motors, the permanent magnet synchronous motor, have a certain advantage because of its structural features. Compared to the switched reluctance motor and induction motor, it is best for driving high inertia loads. Nonetheless, the precise location of electrical system with high inertia loads is still difficult. From this point, a new control strategy of permanent magnet synchronous motor and drive system is designed in this paper.To improve the positioning accuracy of the electric system with high inertia loads, the stator current oriented control strategy is proposed. This new strategy determines d-axis component of stator current angle of rotation by drawing the slip frequency control method for solving the synchronization point of view. Following the Vector Control ideas, stator current will be decomposed into two-phase to control respectively. In order to achieve a step change in approach, the angle of torque is changed as the main means. Adjust the stator current amplitude and position in the control process, without deliberately pursuing a constant flux amplitude. The flux is adjusted dynamically and both the rapid response and precise positioning are achieved. Stator current control strategies directed at high inertia loads on the position control drive system shows its unique advantagesIn this paper, the particularity of high inertia loads is focused on and the permanent magnet synchronous motor drive electric system is designed. Under the stator current control theory, the structure of permanent magnet synchronous motor control system is designed. An analysis of the torque characteristics in the stator current control is achieved. Using the TI DSP chip TMS320LF2407A for the control of the core, a controller is made to ensure the realization of permanent magnet synchronous motor stator current control.