| 摘要 |
<p>The PWM modulating method comprises the following steps: detecting actual voltage values (Vcl, Vcl, Vc2, Vc3...) across bulk capacitors (CI, C2, C3) provided across input terminals of said inverter; calculating a duty cycle vector (D) based on electric parameters defining a rotating vector (V0) representing an output electric quantity required from the inverter; and modifying said duty cycle vector (D) as a function of said actual voltage values to re-balance said bulk capacitors.</p> |
