Motor drive apparatus and motor drive system

The invention relates to provide a motor driving device and a motor driving system capable of improving power efficiency. A motor driving device DR of the present invention includes a power supply terminal Ti for connection to a power source, connected in series to the power supply terminal Ti, the charge and discharge elements C1 to charging and discharging, the antisymmetric two-phase motor a connection terminal Tc to be connected to L1, L2 respectively 1 system and the second system excitation coil includes a plurality of switching elements Tr, by switching on and off of the plurality of switching elements Tr, a connection terminal Tc from the power supply terminal Ti through to form a first path for feeding independently into the first system and the second system exciting coils L1, L2 respectively, further, by switching on and off of the switching elements Tr, the first system and the second system forming a second path for regenerated independently of each residual energy remaining in the excitation coil L1, L2 to the discharge element C1. .FIELD 6