Back to results
US 2012/0068655 A1Published application
Output filter and motor drive system including the same
AssigneeKabushiki Kaisha Yaskawa Denki
InventorsAiko Inuduka, Tsuyoshi Higuchi
Life of this patent
Estimating the term…
Abstract
A motor drive system includes: a three-phase motor; a power conversion device that supplies power for driving the three-phase motor; and an output filter that is arranged between an output of the power conversion device and the three-phase motor and has a configuration in which a setting value of a filter resonance frequency is selectable and changeable.
Claims12
A motor drive system comprising:
- a three-phase motor;
- a power conversion device that supplies power for driving the three-phase motor;
- and
- an output filter that is arranged between an output of the power conversion device and the three-phase motor and has a configuration in which a setting value of a filter resonance frequency is selectable and changeable.
1 more element
An output filter comprising:
- a configuration in which setting values of a plurality of filter resonance frequencies are selectable and changeable, the setting values being lower than a setting value of a switching frequency in PWM control of a power conversion device connected to the output filter and higher than an operation frequency of the power conversion device.
A motor drive system comprising:
- a three-phase motor;
- a power conversion device that supplies power for driving the three-phase motor;
- and
- an output filter including a plurality of secondary low-pass filters arranged between an output of the power conversion device and the three-phase motor, each secondary low-pass filter being formed of an inductance and a capacitor in a common mode.
1 more element
Dependencies are inferred from the claim text.