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The paper deals with possibilities of power IGBT transistor diagnostics directly in driver of voltage source inverters. It is necessary to implement the diagnostics circuits as close as possible to the power IGBT transistor due to high demands on drive reliability and failure predictability in many applications.
Diagnostics methods of power inverters are usually based on using measurements of feedback electric quantities. This paper proposes ways of direct diagnostics of power semiconductors parts in its drivers. In the first part of the article, there were proposed and described methods of direct power semiconductor's diagnostics for usage in voltage source inverters. Circuits for the diagnosis are assumed...
This document focuses on the problem of diagnostics of an electrical drive equipped with a voltage source inverter (VSI). The attention is concentrated on a hardware design for a power system diagnostics. A new concept of a power transistor driver is proposed. This concept of the driver integrates functions for monitoring of a large number of electrical drive parameters which are transferred to the...
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