Enhanced new energy automobile motor turn-to-turn testing device

Abstract

The invention relates to an enhanced new energy automobile motor turn-to-turn testing device, which is characterized in that a turn-to-turn high-voltage oscillation circuit comprises a silicon controlled rectifier, a diode, a resistance-capacitance voltage division module and a filtering module which are connected in series, and is used for generating high voltage, storing turn-to-turn impact energy and forming a turn-to-turn impact discharge conduction loop; during the turn-to-turn test, an LC oscillation loop is formed by the circuit and a tested motor winding, and during the oscillation process, a forward and reverse current channel is established, and a silicon controlled rectifier control circuit is protected; each silicon controlled rectifier is connected with a silicon controlled rectifier control circuit in parallel, and the silicon controlled rectifier control circuit is used for controlling conduction of a silicon controlled rectifier series loop, continuously giving conduction signals in an oscillation process and protecting voltage difference caused by series connection; and the signal processing and waveform sampling circuit is connected to a resistance-capacitance voltage division module and a filtering module of the inter-turn high-voltage oscillation circuit and is used for carrying out high-speed sampling and waveform data storage and calculation. According to the invention, the turn-to-turn oscillation period and amplitude are improved, so that the change of the oscillation waveform is more obvious.

Description

technical field [0001] The invention belongs to the technical field of new energy vehicle testing, and in particular relates to an enhanced new energy vehicle motor turn-to-turn testing device. Background technique [0002] The driving motor of new energy vehicles is generally driven and adjusted by the controller outputting periodic voltage containing high-order harmonics, and its winding is subjected to continuous high-frequency pulse voltage during operation. Once the motor winding has hidden dangers of poor inter-turn insulation, compared with three-phase asynchronous motor windings that withstand power frequency voltage, new energy vehicle drive motors are more prone to short-circuit faults between turns, resulting in unpredictable consequences such as motor damage or spontaneous combustion. Therefore, the inter-turn insulation reliability requirements of this type of motor are very high. [0003] Compared with AC asynchronous motors used in general industrial occasion...

AI Technical Summary

Problems solved by technology

[0010] In order to solve the above technical problems, the present invention provides an enhanced new energy vehicle motor turn-to-turn test device, which solves the slight problem caused by the low amplitude and short period of the motor turn-to-turn waveform existing in the test process o

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