Use of an inverter switching arrangement for operating a system with electric drive

Simple SummaryContent extracted from patent full text and abstract with AI.

This invention describes a specialized inverter switching arrangement designed for systems with electric drives. It combines different types of semiconductor switches in a hybrid inverter circuit to enhance safety. The system uses a control circuit that can actively create a short circuit across each phase in the event of a fault, helping to protect the electric drive and related components.

Use CasesContent extracted from patent full text and abstract with AI.

• Electric vehicles (EVs) and hybrid vehicles
• Industrial motor drive systems
• Renewable energy installations using electric drives, such as solar or wind power systems
• Electric trains or trams
• Robotic systems powered by electric drives

BenefitsContent extracted from patent full text and abstract with AI.

• Enhanced safety due to active short-circuit capability in fault conditions
• Improved reliability and protection for electric drive systems
• Efficient combination of different semiconductor technologies for optimal performance
• Potential for broader application due to compatibility with various electric systems
• Supports high-performance electric drive operations in critical environments

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Patent Abstract

In an example, an optimized inverter switching arrangement to operate a system with an electric drive may include an inverter circuit as a two-level inverter, which couples an alternating signal connection and a direct signal connection of the switching arrangement to each other. The inverter circuit may include at least two phases, which are each equipped with first switching elements as a half bridge. At least one second switching element is associated with each of the phases to form a hybrid circuit. The first and second switching elements differ in their semiconductor technology. By a control circuit, the inverter circuit may be operated in a short circuit operation to perform an active short circuit in case of a fault. The control circuit may control the first and second switching elements such that the alternating signal connection is short-circuited by each phase.