Abstract: A filter component is adapted to an electrical system having first and second electric apparatuses. The filter component has a resistive element and first, second, third and fourth windings. The first electric apparatus has a power terminal being a first power terminal and another power terminal being a second power terminal. The second electric apparatus has a power terminal being a third power terminal and another power terminal being a fourth power terminal. The first and second windings are connected in series, and the third and fourth windings are connected in series. The first and third windings form a common-mode inductor suppressing a common-mode noise current. The first to fourth windings form a differential-mode inductor suppressing a differential-mode noise current. The resistive element is connected in parallel across at least one of the first to fourth windings.

Abstract: A high-voltage auxiliary system for a vehicle includes a high-voltage battery, a temperature raising device, a high-voltage auxiliary machine, and an electronic control device. The temperature raising device is connected to the high-voltage battery via an electric circuit and raises the temperature of the high-voltage battery by utilizing fluctuations in voltage and current. The high-voltage auxiliary machine is electrically connected to the electric circuit and is driven by power supplied from the high-voltage battery. The electronic control device suppresses the operating state of the high-voltage auxiliary machine so that a fluctuation in voltage and current due to the operation of the temperature raising device and the operation of the high-voltage auxiliary machine is less than an allowable value of the high-voltage auxiliary machine.