An Investigation on DC-Link Voltage Influence on E-Drive Efficiency for E-mobility Application

被引：1

作者：

Carlsson, Andreas ^{[1
]}

Josefsson, Viktor ^{[1
]}

Furufors, Fredrik ^{[2
]}

Nategh, Shafigh ^{[3
]}

Ekholm, David ^{[3
]}

Kleen, Noel ^{[1
]}

机构：

[1] Polestar Performance AB, Elect Dr Unit CAE & Testing, Gothenburg, Sweden

[2] Polestar Performance AB, Inverter Component Design, Gothenburg, Sweden

[3] Polestar Performance AB, Elect Dr Unit, Gothenburg, Sweden

来源：

2023 IEEE WORKSHOP ON ELECTRICAL MACHINES DESIGN, CONTROL AND DIAGNOSIS, WEMDCD | 2023年

关键词：

Battery Voltage; Electric drives; E-mobility; Field weakening; Iron loss; Switching loss; ELECTRICAL MACHINES; IRON LOSSES; TEMPERATURE;

D O I：

10.1109/WEMDCD55819.2023.10110942

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper presents the experimental investigation of how the E-Drive efficiency is impacted by system voltage. To evaluate the impact on a system level for automotive application, an 800 V E-Drive is evaluated in a test rig. A 385 kW electric motor is used together with an 800 V Silicone-Carbide inverter. Two different tests are conducted, the first bring high accuracy efficiency measurements of the motor and inverter at a number of fixed operation points. The second test is the WLTC cycle in which the total E-Drive efficiency and on a component-level is measured over the total drive cycle. The results are presented and discussed where significant voltage dependency can be noted for the efficiency, both for the motor and inverter. Hence this paper highlights one of the challenges as automotive OEMs move towards higher voltages. Future studies to be conducted are mentioned in the discussion to further investigate how the inverter conditions will influence the total system efficiency and to show possible solutions to reduce the impact of the system voltage level.

引用

页数：6

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