Reinhard Lehmann

Title: Reinhard Lehmann: Innovator in Power Grid Technology

Introduction

Reinhard Lehmann is a notable inventor based in Kassel, Germany. He has made significant contributions to the field of power grid technology, holding a total of 3 patents. His work focuses on enhancing the efficiency and safety of electrical systems.

Latest Patents

One of Lehmann's latest patents is titled "Isolation monitoring using a test signal of variable frequency." This invention involves monitoring the isolation of an ungrounded power grid by connecting an AC voltage source to the grid through a test resistor. A periodic test signal is applied, and the resulting leakage current is measured to determine the ohmic isolation resistance. This method allows for accurate isolation or ground fault detection at varying leakage capacitances.

Another significant patent is "Connecting a photovoltaic array at a high open circuit voltage." This innovation describes a process for connecting a photovoltaic (PV) array to an AC power grid via an inverter. The method includes pre-charging a DC link from the AC grid and adjusting the link voltage to a preset value before directly connecting the PV array. This ensures efficient integration of renewable energy sources into the power grid.

Career Highlights

Reinhard Lehmann is currently employed at SMA Solar Technology AG, a leading company in solar energy solutions. His work at SMA has allowed him to focus on innovative technologies that improve the integration of solar power into existing electrical systems.

Collaborations

Lehmann collaborates with Dirk Hermeling, a fellow innovator in the field. Their partnership has contributed to advancements in solar technology and power grid management.

Conclusion

Reinhard Lehmann's contributions to power grid technology and solar energy integration highlight his role as a key innovator in the field. His patents reflect a commitment to enhancing the efficiency and safety of electrical systems, paving the way for future advancements.