摘要
针对电动汽车800 V高压平台的多电机驱动系统逆变器开关器件数量较多、控制策略复杂等问题,提出1种十五开关三电平双输出逆变器,通过器件复用简化了逆变器拓扑结构、降低了逆变器成本。首先,对所提逆变器拓扑结构及工作原理进行了详细的分析研究,总结了该逆变器的结构特点,给出了有效开关状态及最大电压应力分析,为开关器件选型及系统设计提供了理论基础。然后,提出了1种单桥臂独立模型预测电流控制策略,建立了单桥臂双输出端口电流的预测模型,在实现三桥臂独立预测控制与单桥臂双输出电流综合最优控制前提下,有效降低了预测运算量。最后,通过Typhoon HIL 402平台对所提逆变器及其控制策略的正确性及有效性进行实验验证。
Aimed at the problems of a large number of switching devices and complex control strategy for an inverter in the multi-motor drive system of a 800 V high-voltage platform for electric vehicles,a fifteen-switch three-level dual-output inverter is proposed,which simplifies the inverter topology and reduces its cost by device multiplexing.First,a detailed analysis of the proposed inverter topology and working principle is performed,its structural characteristics are summarized,and the effective switching state and maximum voltage stress analysis are given,providing a theoretical basis for the selection of switching devices and system design.Then,a single-leg independent model prediction current control strategy is put forward,and a prediction model of single-leg dual-output port current is established,which effectively reduces the prediction operation under the premise of realizing three-leg independent prediction control and single-leg dual-output current integrated optimal control.Finally,the correctness and effectiveness of the proposed inverter and its control strategy were experimentally verified based on a Typhoon HIL 402 platform.
作者
王贵峰
王建飞
WANG Guifeng;WANG Jianfei(School of Electrical Engineering and Automation,Jiangsu Normal University,Xuzhou 221116,China)
出处
《电源学报》
2025年第7期17-27,共11页
Journal of Power Supply
基金
国家自然科学基金资助项目(51707086)。
关键词
800
V高压平台
十五开关三电平双输出逆变器
单桥臂
模型预测电流控制
800 V high-voltage platform
fifteen-switch three-level dual-output inverter
single-leg
model predictive current control
