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This paper introduces a direct PWM split-phase boost ac-ac converter with a high voltage gain, natural output voltage balancing, no duty-ratio limitation, and no commutation problem. Although under unbalanced load conditions, the two output voltages still are equal without auxiliary circuits and/or any dedicated controller.
A new three-level three-phase PWM inverter has been developed and investigated analytically as well as experimentally with a comparative study against the conventional 3L topologies. This inverter exhibits an inherent boost capability, offering a single-stage power conversion as an alternative for the conventional two-stage conversion technique.
Moreover, the input current ripple is significantly decreased due to the interleaving effect. With a proper asymmetrical PWM scheme, the converter can work in the entire range of the duty cycle. In addition, the commutation (dead-time) problem is eliminated. The operation of the proposed structure is validated with a 500 W prototype converter.
2.8k,3,6。PDM(pulse density modulation),PWM(pulse width modulation),PWM,PDM, RC . ,PWM,, ...
This paper investigates a Boost Inverter for electric vehicles (EVs) and hybrid vehicles (HVs). Three PWM methods, including space vector PWM (SVPWM), power factor adaptation …
PWM - Pulsweitenmodulation Die PWM (Pulsweitenmodulation) ist eine digitale Modulationsart, bei der eine technische Größe (z. B. eine elektrische Spannung) zwischen zwei Werten wechselt. Dabei wird bei konstanter Frequenz ein Rechteckimpuls erzeugt …
This article proposes a novel control strategy called a 120° bus clamped PWM (120BCM). The 120BCM modulates the DC bus and uses a smaller DC bus capacitor value, …
A new three-level three-phase PWM inverter has been developed and investigated analytically as well as experimentally with a comparative study against the conventional 3L topologies. This inverter …
The Simple, Constant and Maximum Boost PWM control techniques are mathematically designed and applied to a 2 k-W ZSI and the critical performance metrics of the inverter, viz. the boost …
