Systems and methods of controlling an uninterruptible power supply are provided. The uninterruptible power supply includes an input configured to receive input power, an output, a power conversion circuit coupled with the input and the output, and a controller coupled with the power conversion circuit. The power conversion circuit includes an inverter, which includes a low pass filter. The low pass filter includes an inductor, and the controller is configured to provide control signals to the inverter such that a first current, measured at the inductor, generates a second current, measured at the output, where the first current has a first polarity and the second current having a second polarity, and the first polarity is either zero or the same polarity as the second polarity.