The FD5000 series medium voltage drive is high-high voltage device, which is controlled by DSP, with the SVPWM and cell in series multi-level technology to guarantee the inverter suits different industrial fields. The product was awarded as national key new products in 2003, high voltage hoister inverter was awarded as National Torch Project in 2005 and funded by Ministry of Science and Technology Innovation Fund for SMEs project. The FD5000 series medium voltage drive includes the phase shifting transformer, power cell and controller.