Harald Wiechmann

Title: Harald Wiechmann: Inventor in Electric Drive Control

Introduction

Harald Wiechmann is an inventor based in Hirschaid, Germany. His patent work addresses the identification of parameters used to control electric drives with induction machines.

Latest Patents

Wiechmann is associated with 1 patent, titled “Parameter Identification for Induction Machines.” The invention describes a method and control apparatus for determining parameters that support the start-up and control of an electric drive. It applies current indicators to the machine’s three-phase winding connections and measures the d- and q-components of stator voltage and current.

The method includes a first measurement step in which a rotating current indicator is applied while the machine is oriented to minimize the exciter current in the q-axis. In a second step, with the rotor stationary and the field winding short-circuited, a binary-noise current indicator is applied to the winding connections. The resulting measurements are used to determine stator impedance as a control parameter.

Career Highlights

Wiechmann’s listed company affiliations include Siemens Aktiengesellschaft and Innomotics GmbH. The available information does not specify his roles or dates of employment at these companies.

Collaborations

Folke Giessler and Peter Stark are identified as Wiechmann’s coworkers. The provided information does not detail their specific contributions to the patent.

Conclusion

Harald Wiechmann’s patent focuses on a measurement-based approach to identifying induction-machine parameters, with the aim of improving electric-drive start-up and control.