Inverter control apparatus, and the air conditioner and washing machine using the same

摘要

Apparatus (5) inverter control, which incorporates therein a unit (6) current reproduction, which gives access to information of a detector (4) current of a DC bus for detecting the phase currents snapshots, circulating in an electric motor (1) and which are contained in the current DC bus, flowing from a source (3) of DC power to the inverter (2), and which reproduces phase currents that circulate in the motor (1), based on the values ​​of the phase currents instant, and controls voltage for the voltages which are applied to the inverter (2) are calculated using the phase currents, wherein comparing a amount of current DC bus averaged with a predetermined value in the range of voltage saturation, the unit (6) current reproduction calculates the phase currents that flow into the motor (1), based on the current ( I0-FL-S) averaged DC bus, a phase current instant for a single phase (I0-Su, Sv I0, I0-S-ww), the voltage (Ed-s) sampled and DC angle (θdc) of rotation of the frame (ds) rotating.