A dual-motor controller capacitor thermal management method, device, equipment and medium
By controlling the PWM carrier signal of the dual-motor system in new energy vehicles to generate a phase difference and dynamically adjust it, the problem of temperature rise of the shared DC bus capacitor is solved. This effectively suppresses capacitor temperature rise, adapts to changes in operating conditions, and ensures safety without increasing hardware costs or sacrificing power.
CN122419331APending Publication Date: 2026-07-17VOYAH AUTOMOBILE TECH CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- VOYAH AUTOMOBILE TECH CO LTD
- Filing Date
- 2026-04-30
- Publication Date
- 2026-07-17
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Figure CN122419331A_ABST
Abstract
一种双电机控制器电容热管理方法、装置、设备及介质，包括：获取双电机系统的运行参数及直流母线薄膜电容的电容温度；在运行参数和电容温度满足预设热管理触发条件时，控制双电机系统的第一电机驱动单元和第二电机驱动单元的PWM载波信号之间产生初始相位差；在保持初始相位差的过程中，监测电容温度的温升速率；若温升速率满足预设相位差调整条件，则基于温升速率的反馈动态调整PWM载波信号之间的相位差，直至温升速率达到最小值，将对应的相位差锁定为最优相位差。本申请通过设置相位差，在不增加硬件成本且不损失输出功率的前提下，有效抑制共享直流母线电容的温升问题；同时通过相位差寻优，可以确保相位差能有效适应当前工况，提高控制效果。
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