Abstract
Abstract
Active neutral point clamped (ANPC) topology is widely studied because it makes loss equalization possible. To reduce the switching frequency of high power traction systems, the multi-mode modulation strategy is used in many modulation methods. To reduce the fluctuation problem when switching between different carrier ratios in multi-mode synchronous space vector pulse width (SSVPWM) modulation algorithm, this paper studies the stator flux under different modes and proposes a multi-mode SSVPWM switching strategy based on the pulse insertion method. In this strategy, the stator flux deviation of two modes before and after the switching point is calculated online and the switch sequence is inserted at the switching time to compensate, and the smooth transition between different modes is realized with experimental verification of validity.
Subject
Computer Science Applications,History,Education