A power electronics system configured to determine a condition of a winding insulation is disclosed. The system may include at least one capacitor, and a first resistance coupled to the at least one capacitor. The system may further include a plurality of electronic switching devices coupled to at least the first resistance and the at least one capacitor, wherein the plurality of electronic switching devices are configured to selectively couple the at least one capacitor to a power source to charge the at least one capacitor during a first time interval and selectively couple the at least one capacitor to a second resistance during a second time interval. The system may further include a voltage measuring device configured to detect a change in voltage at a terminal of the at least one capacitor in response to the selective coupling of the at least one capacitor to the second resistance. The system may further include a computing system configured to determine a condition of the insulation based on the detection.