Method and device for the sensor reduced regulation of a permanent magnet excited synchronous machine
AssigneeRobert Bosch GmbH
InventorsJochen Kuehner, Klaus Rechberger
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Abstract
A method and a device for providing field-oriented regulation of a synchronous machine excited by a permanent magnet, in which a direct-axis voltage component and a quadrature-axis voltage component of the control voltage for the synchronous machine are determined from a quadrature-axis current component setpoint value thus determined and from rotational speed information using a stationary machine model in a decoupling network. These voltage components are converted into triggering pulses for the synchronous machine. The regulating system does not require any information regarding the phase currents of the polyphase system.
Claims16
A method for field-oriented regulating a synchronous machine excited by a permanent magnet, the method comprising:
- determining a quadrature-axis current component setpoint value;
- supplying the quadrature-axis current component setpoint value and rotational speed information to a decoupling network which contains a stationary machine model;
- determining a direct-axis voltage component and a quadrature-axis voltage component in the decoupling network as a function of only the quadrature-axis current component setpoint value, the rotational speed information and the stationary machine model;
- and
- converting the direct-axis voltage component and the quadrature-axis voltage component into triggering pulses for the synchronous machine.
A device for field-oriented regulating a synchronous machine excited by a permanent magnet, comprising:
- a decoupling network which includes a stationary machine model having an input for a quadrature-axis current component setpoint value and an input for rotational speed information, and which is provided for determining a direct-axis voltage component and a quadrature-axis voltage component as a function of only the quadrature-axis current component setpoint value, the rotational speed information and the stationary machine model, and
- a conversion unit which is connected to the decoupling network for converting the direct-axis voltage component and the quadrature-axis voltage component into triggering pulses for the synchronous machine.
Dependencies are inferred from the claim text.