| 摘要 |
<p>An apparatus for converting power by means of fault-tolerant PWM switching and a method for controlling same, according to the present invention, comprises: an inverter switching portion for outputting a pulse signals corresponding to the size of a DC-link voltage; an LC filter portion for smoothing a voltage pulse signal outputted by the inverter switching portion and then outputting same as a sine wave signal; a current sensor portion for detecting current outputted by the inverter switching portion; a PWM switching control portion for comparing an absolute value of a current value detected from the current sensor portion and a predetermined current value, and then controlling the inverter switching portion according to an output value corresponding to same; a control portion for detecting an output-end load voltage of the LC filter portion and controlling and outputting same as a reference sine wave voltage; and a PWM generator for receiving the sine wave voltage outputted from the control portion, receiving an inputted comparative triangle wave having a predetermined switching frequency, and outputting a pulse width driving signal to the inverter switching portion.</p> |
