There are many ways to measure THD in practice, but [Michael Jackson] has an interesting video showing how he easily visualizes THD using LTSpice. Assuming you already have the system in question ...

Sadly, LTSpice development seems to have stalled ... Particularly of interest is native support for behavioral modeling using Verilog and C++, making QSpice a true mixed-mode simulator.

Students who have not used LTSPICE before, should expect to spend more than the ... This module explains 1) the need for power conversion using a grid-connected solar system with storage and an ...