초록 ▼

When torque control is performed for suppressing speed change within one rotation using a synchronous motor (6) controlled by an inverter (5) for a load having cyclic torque changing, an arrangement is employed which includes inverter control means (8) (10) for controlling the inverter (5) so as to

When torque control is performed for suppressing speed change within one rotation using a synchronous motor (6) controlled by an inverter (5) for a load having cyclic torque changing, an arrangement is employed which includes inverter control means (8) (10) for controlling the inverter (5) so as to superpose a changing amount upon an amplitude and phase of a current waveform or voltage waveform, so that torque control is realized for reducing low speed vibration of a cyclic intermittent load with maximum efficiency condition and with practical arrangement.

대표청구항 ▼

[What is claimed is:] [1.]superposing a varying amount upon an amplitude and a phase of a current waveform or voltage waveform when torque control is performed for suppressing speed change within one rotation by a synchronous motor controlled with an inverter which motor drives a load having a cycli

[What is claimed is:] [1.]superposing a varying amount upon an amplitude and a phase of a current waveform or voltage waveform when torque control is performed for suppressing speed change within one rotation by a synchronous motor controlled with an inverter which motor drives a load having a cyclic torque change.