Switched-capacitor-based multilevel inverters for boost-type dc–ac power conversions usually exhibit a trade-off between the switch count and switch-voltage rating, i.e., reduction of one necessitating an increase other. Such dilemma is well addressed in this article by proposing novel single-phase nine-level inverter based on switched-capacitor network with single switch. The proposed then red...

This paper deals with the use of shunt active filter to compensate current perturbations produced by non linear loads. To perform the identification of disturbing currents, the so called Instantaneous Active and Reactive Power Method (pq) is used. A Phase Locked Loop (PLL) circuit, locked to the fundamental frequency of the system voltage, is also introduced for eventual mains voltages perturba...

An inherent problem of single-phase rectifiers is the existence of a pulsating portion in the input power, which pulsates at twice the grid frequency. If this pulsating power is transferred to the DC-link, it causes a significant amount of second-order harmonic at the output voltage. Since in many applications, such a high level of DC oscillation is not acceptable, so the pulsating power must b...

The conventional active neutral-point-clamped (ANPC) inverter inherits excellent high-frequency common mode voltage (CMV) mitigation ability but with a restricted gain. This letter proposes novel five-level ANPC that is able to accomplish voltage-boosting within single-stage dc–ac power conversion. A ground in the proposed topology not only mitigates CMV also enhances dc-link utilization. exhib...

This paper shows the method of improving the power quality using shunt active power filter. The proposedtopic comprises of PI controller, filter hysteresis current control loop, dc link capacitor. The switching signal generation for filter is fromhysteresis current controller techniques. With the all these element shunt active power filter reduce the total harmonic distortion. Thispaper represe...

The extensive usage of power electronic components creates harmonics in the voltage and current, because which, quality delivered gets affected. Therefore, it is essential to improve power, as we reveal this paper. problems load voltage, source factors are mitigated by utilizing unified flow controller (UPFC), which a combination series shunt converters combined through DC-link capacitor. To re...

An intrinsically stable microgrid, operated by inverter-interfaced distributed energy resources (I-DERs) is introduced in this paper. The microgrid built upon a systematic design method, which adapted from the operation of synchronous machine (SM). proposed method analogizes dynamics dc-link I-DERs to rotor generators (SGs) and utilizes capacitor as storage. Thus, mechanism relaxes battery usag...

The AC voltage control of a DC/DC converter based on the modular multilevel converter (MMC) is considered under normal operation and during a local DC fault. By actively setting the AC voltage according to the two DC voltages of the DC/DC converter, the modulation index can be near unity, and the DC voltage is effectively utilized to output higher AC voltage. This significantly decreases submod...

This paper proposes a high voltage gain dc/dc converter with coupled inductor cells and switched capacitor for renewable energy applications. It includes coupled inductor, switched capacitor and voltage multiplier cell. Switched capacitor charged during off period by using the energy stored in the coupled inductor. This will increase the performance of the converter. The voltage gain of traditi...