However, it also has some shortcomings, for example, different axes have different dynamic characteristics, and positioning errors produced by each axis will accumulate [8], leading to a decline in accuracy. For the parallel configuration, the inertia is small, and the closed-loop kinematic chains...
In References [4,5], an isolation transformer is added to the AC input side of each rectifier to block the zero-sequence path. Another hardware method is to use passive components, such as a common mode inductor and current balancer among parallel rectifier modules [6]. However, the above ...