Inaccurate capacitance significantly increases the DC-Link ripple voltage of active power decoupling circuit (APDC). To solve this problem, a high-precision online estimation method is proposed. This converts AC components capacitor into sum DC component and with 8 times grid frequency, which beneficial to extraction component. replaces effectively eliminate periodic mutation, accurately estima...

Micromachined gyroscope always contains two groups of capacitors, one is the driving capacitor, which is used to drive the micromachined gyroscope, to make sure the gyroscope could oscillate along the driving direction. The other is so called the sensing capacitor, which used to detect the displacement along the sensing direction, in order to detect the input angle velocity. Since there are som...

The equivalent series inductance (ESL) of the DC link capacitor and associated bus structure connecting to the switch module has important implications for optimization of electric vehicle inverters. In many cases, additional snubber (bypass) capacitors can be eliminated for sufficiently low ESL, thus reducing cost, weight and volume. This paper presents ESL measurements for realistic capacitor...

This letter proposes a safe operating area (SOA) concept for film capacitors in dc-link applications. The SOA is presented by capacitor voltage and ripple current, considering the impact of ambient temperature, degradation, parameter variance. theoretical derivations proof-of-concept experimental verifications are given.

The paper presents a low-cost current sensor for power capacitors in power electronic converters, especially for DC link electrolytic capacitors of PWM converters. The sensor is based on a Rogowskicoil which is implemented very cost-effectively using a small standard printed circuit board (PCB) located directly at the capacitor terminals. Due to the measuring principle the output signal inheren...

In this work, a transformer-less voltage source converter (VSC) based STATCOM is proposed with combination of cascaded conventional three-phase inverters. This modular structure provides multilevel operation reduced switch count and independent DC-link capacitors. The actual contribution paper the configuration which cost volume as compared to other configurations. system reactive power compens...

This paper deals with a comparative analysis of various converter topologies for Power Factor Correction (PFC) in switched reluctance motor drives. Hence a power factor corrected converter required for obtaining the improved PQ at the AC mains for an inverter fed SRM drive has been analyzed. The SRM when fed by a DBR with a high value of DC-link capacitor results in highly distorted supply curr...

This paper proposes simulation and comparison of BTB (back-to-back) system combining bidirectional isolated dc/dc converters and modular multilevel cascade PWM converters [1]. The system consists of multiple converter cells connected in cascade per phase at both front ends. Each converter cell consists of a bidirectional isolated medium-frequency dc/dc converter and two voltagesource H-bridge (...

Cascaded H-bridge drives require using a significant-size capacitor on each cell to deal with the oscillatory power generated by inverter in DC-link. This results bulky reduced reliability due circulating second harmonic current through DC-link capacitors. In this article, control strategy based finite set model predictive and proportional-resonant controller is proposed compensate for required...

Received Jan 8, 2018 Revised Mar 23, 2018 Accepted Apr 11, 2018 Distributed energy source based electricity generation is an essential factor for the economic growth and development of a country. The photovoltaic, fuel cell and battery based power generation offer a high voltage gain. The DC-DC CUK converter based on both buck and boost mode of operation is proposed for high gain dc link voltag...