| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a motor controller for a single-phase rectification converter power supply capable of attaining no degradation of motor performance without change in a DC voltage even if a load suddenly changes. <P>SOLUTION: The motor controller includes a converter (1), a smoothing capacitor (2), an inverter (3), a step-up/down chopper (5) and a storage part (9). The step-up/down chopper includes: a step-up part (7) for stepping up a storage part voltage to charge a DC voltage; a step-down part (6) for stepping down a DC voltage to charge the storage part; an AC voltage detection part (10) for detecting an AC voltage to generate an AC peak voltage signal; a DC voltage detection part (11) for detecting a DC voltage to generate a DC voltage signal; a storage part voltage detection part (12) for detecting a voltage of the storage part to generate a storage part voltage signal; a current command generation part (15) for generating a chopper current command based on the DC voltage signal, a capacity of the smoothing capacitor and the storage part voltage signal; and a chopper current control part (17) for controlling a chopper current based on a chopper current command. <P>COPYRIGHT: (C)2009,JPO&INPIT |
