The invention is directed to the provision of a converter apparatus, an
inverter apparatus, and a DC link voltage control method, wherein the
upper limit value of the DC link voltage that rises due to regenerative
energy occurring from a motor is set high, thereby increasing the
regenerative energy to be stored in a DC link. The converter apparatus
(10) comprises: a voltage detection part (11) for monitoring the DC link
voltage occurring across the DC link (30); and a charge stopping part
(12) for stopping charging a power storage part (C) when the detected
value of the DC link voltage exceeds a predetermined upper limit voltage
as the motor (3) is decelerated.