MOTOR SYSTEM

PROBLEM TO BE SOLVED: To provide a motor system, with a built-in inverter apparatus, which little increases costs due to a maintenance operation and can obtain a wide application range. SOLUTION: An inverter apparatus is separated into a control unit 1 and an inverter unit 21, and a converter part 10 and a smoothing capacitor 11 are housed in the control unit 1. Then, the inverter unit 21 is attached to an induction motor 20 so as to form an inverter-integrated motor 2, the control unit 1 and the motor 2 are connected by a power-supply cable 3 used to supply DC electric power, and a capacitor 22 which is used to suppress a noise and an overvoltage is installed inside the inverter unit 21. Thereby, when the length of the power supply cable 3 is changed, the installation place of the control unit 1 and the inverter-integrated motor 2 can be selected respectively individually, and the control unit 1 can be installed in a place which is convenient for an operation and a maintenance operation without being restricted by the installation place of the induction motor. In addition, there is no fear that the size of the inverter-integrated motor 2 is increased more than that of the induction motor as a single body, and a motor system can keep an application range which is not different from that of the induction motor as the single body.