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In this paper, a 5KW power factor corrected (PFC) converter for wide voltage input range is designed. The converter, which is applied to frequency-variable conversion air conditioner, adopts two phase interleaved boost converter. The circuit operates in current continuous conduction mode (CCM), and use voltage outer loop and current inner loop control strategy, i.e., current inner loop using average...
A space vector PWM (SVPWM) algorithm is proposed for the single-phase three-level NPC inverter, and the cause of the imbalance of the capacitor voltage in DC-side is analyzed. In order to lower the switching loss and avoid the abrupt change of output voltage vectors, an optimal SVPWM algorithm is proposed, it makes use of five-vectors modulation in which the positive (or negative) small vectors are...
In this paper, a novel single-phase buck PFC converter based on one-cycle control is presented. In contrast to the conventional boost PFC converter, some disadvantages of the boost PFC converter are overcome, and the switching loss and the stress of the main switch are reduced. In addition, with the one-cycle control, the multipliers and the voltage sensors used in the traditional direct current control...
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