EFFICIENT DAMPING OF VIBRATIONS OF AN ELECTRIC MACHINE

摘要

A first active part of a poly-phase electric machine is connected to a converter having a control facility. The control facility updates a base commutation angle using the target speed value and determines direct-axis and quadrature-axis component values of currents and a commutation angle supplied to the machine. Target and component quadrature-axis values are provided to a quadrature-axis portion of a current controller that determines a target value of the quadrature-axis voltage component. Target and component current values are supplied to a direct-axis portion of the current controller, which determines a target value of the direct-axis voltage component therefrom. The target value of the direct-axis and quadrature-axis voltage components and the commutation angle are used to determine the target output voltages provided to the converter. A damping commutation angle determined using target values of the quadrature-axis and direct axis voltage components is used to adjust the of the voltage.

主权项

1. A control method for a converter adapted to be connected an electric machine having a first active part and a second active part that interacts with the first active part of that machine and to be connected to a poly-phase power source, said converter having a control facility connected to control the converter, said method comprising:
providing predetermined target values of direct-axis and quadrature-axis components of the current and a predetermined target speed value to the control facility; updating a base commutation angle using the target speed value; determining the values of the direct-axis and the quadrature-axis components of the current provided to the second active part of the electric machine by the converter, using the values of the currents provided by the poly-phase system and an effective commutation angle; determining the damping commutation angle using the target values of the direct-axis component and the quadrature-axis component of the voltage; determining an effective commutation angle using the base commutation angle and a damping commutation angle; providing the effective commutation angle to the converter; determining the target values of the direct-axis and the quadrature-axis components of the voltage and the effective commutation angle of the voltage provided to the first active part of the electric machine by the converter, using target values of the direct-axis and quadrature-axis components of the voltage; determining the target value of the quadrature-axis component of the voltage by supplying the target value of the quadrature-axis component of the current and the value of the quadrature-axis component of the current to a quadrature-axis portion of a current controller of the control facility; and determining the target value of the direct-axis component of the voltage by supplying the target value of the direct-axis component of the current and the value of the direct-axis component of the current to a direct-axis portion of a current controller of the control facility.