A detailed investigation of the DC-link voltage ripple in battery-fed PWM inverter systems - Mantzanas, Panagiotis; Bucher, Alexander; Kübrich, Daniel; Pawellek, Alexander; Hasenohr, Christian; Hofmann, H.; Dürbaum, Thomas (International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management, PCIM Europe 2019, 2019)