纯电动车电驱系统振动噪声优化
首发时间:2019-05-07
摘要:某电驱动系统噪声超标。为研究其噪声优化方法和效果,采用试验的方式查找噪声源,提出改善措施。试验结果表明振动噪声主要来源是电磁噪声,机械噪声也有一定的贡献。采取转子三段式V型斜极方案和定子壳体加强改善主要阶次噪声。最后试验验证改善效果,电驱系统噪声改善明显。为纯电动汽车电驱系统NVH性能优化提供参考。
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Vibration noise optimization of electric vehicle electric drive system
Abstract:In this paper, electric drive system has a high noise level. In order to study the noise optimization method and effect, the noise source is found by experiment and improvement measures are proposed. The test results show that the main source of vibration noise is electromagnetic noise, and mechanical noise also has a certain contribution. The three-stage V-type rotor-skewing scheme and stator housing reinforcement are used to improve the main order noise. Finally, the test verified the improvement effect, and the noise of the electric drive system improved significantly. It provides a reference for NVH performance optimization of pure electric vehicle electric drive system.
Keywords: Acoustics electricdrive system test optimization electromagnetic noise rotor-skewing
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