Patent ID: 9712095
Date: 2017-07-18
CPC Classifications: H02P

Claim:
1. A control method for a converter connected to an electric machine having a first active part and a second active part that interacts with the first active part, the first active part of the electrical machine being connected to a poly-phase power source providing a supply voltage and respective poly-phase currents by the converter, said converter having a control facility connected to control the converter, said method comprising the steps of: providing a predetermined target speed value to the control facility of the converter; the control facility of the converter updating a base commutation angle using the target speed value; the control facility determining the values of the direct-axis and quadrature-axis components of the current provided to the second active part of the electric machine that interacts with the first active part by the converter, the control facility of the converter using the values of the currents provided by the poly-phase system and a commutation angle; the control facility determining a damping commutation angle using the target values of the direct-axis component and the quadrature-axis component of the voltage; the control facility determining the commutation angle using the base commutation angle and the damping commutation angle; the control facility providing the commutation angle to the converter; the control facility using the target values of the direct-axis and the quadrature-axis components of the voltage and the commutation angle of the voltage provided to the first active part of the electric machine by the converter to determine data characteristic of poly-phase voltage system voltages supplied to the first active part and supply that characteristic data to the converter; the control facility determining the target value of the quadrature-axis 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 the control facility 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.