A single-phase PWM inverter is presented to alleviate harmonic components of the output voltage and the load current. To keep the output voltage being sinusoidal and to have the high dynamic performances even in the cases of load variations and the partial magnetization in filter inductor, the modified digital predictive controller is designed and implemented on a prototype. The validity of the...

The paper analyzes different concepts for active charge balancing for a multi-cell battery energy storage system used as a backbone for a DC micro grid. The storage system is based on a cascaded multi-level converter topology where each (lead-acid) battery is equipped with dedicated low-voltage buck type DC/DC converter stage placed directly at the battery terminals. To minimize the output ripp...

The Static Synchronous Compensators (STATCOMs) have been recoginzed as the most effective solution for dynamic reactive power compensation, voltage stability enhancement and subsynchronous resonance damping purposes in the electric power systems. The STATCOMs in the distribution utilites (DSTATCOMs) are increasingly investigated for dynamic reactive power compensation and power quality improvem...

This modulation method is based on selective virtual loop mapping, to achieve dynamic capacitor voltage balance without the help of an extra compensation signal. The concept of virtual sub module (VSM) is first established, and by changing the loop mapping relationships between the VSMs and the real sub modules, the voltages of the upper/lower arm’s capacitors can be well balanced. This method ...

In this paper, a novel control scheme of three-phase PWM rectifiers eliminating both the ac input voltage and current sensors is proposed. The phase angle and the magnitude of the source voltage are estimated by controlling the deviation between the rectifier current and its model current to be zero. The input currents can be reconstructed from switching states of the PWM rectifier and the meas...

This paper develops discontinuous space vector PWM (DPWM) techniques for a five-phase two-level voltage source inverter (VSI). Space vector model of a five-phase VSI shows that there exist 32 space vectors with three different lengths forming three concentric decagons. Application of outer most and middle set of space vectors to implement Space vector PWM yield nearly sinusoidal output. Thus th...

The integration of solar photovoltaic (PV) arrays with induction motor drives (IMDs) has attained significant research interest, owing to the wide range applications IMD, such as water pumping, cement industries, electric vehicles, and rolling mills. Multilevel inverters (MLIs) are a prominent solution for driving medium voltage motors (IMs) due their superior performances over two-level source...

∗ Corresponding author Abstract -This exploratory study examined the possibility of driving a fluorescent lamp at high frequency with no serially connected passive elements. The proposed driver is a full bridge stage controlled by the phase shifted PWM scheme. Current feedback was used to stabilize the average of the rectified lamp current to a set value. The experimental results of this resear...

Soft-switching DC-DC converter using Phase-Shifted Pulse Width Modulation (PS-PWM) on secondary side of highfrequency transformer is described in the paper. The converter consists of a full-bridge inverter fitted with fast IGBT transistors. The output power of the converter is controlled by rectifier made up of two snap-off diodes in series with MOSFET transistors which is connected on secondar...