Recently, since single phase loads and dispersed generators become widespread, unbalanced voltage in distribution line become an important problem for voltage management. One of them is that the control of a conventional voltage regulation device become difficult because of the difference of the magnitude of the line voltages, the other one is increase of 3rd harmonic voltages. The authors prop...

The proposed CMOS Low Dropout (LDO) regulator has been designed and simulated using TSMC 0.25μ CMOS process in cadence analog design environment . This paper illustrates the design criteria and corresponding analysis relevant to LDO. The experimental result shows that, it regulates an output voltage at 3.3V from a 3.5V supply, with a minimum dropout voltage of 200mV at a maximum output current ...

An ultra-low quiescent current low-dropout regulator with small output voltage variations and improved load regulation is presented in this paper. It makes use of dynamically-biased shunt feedback as the buffer stage and the LDO regulator can be stable for all load conditions. The proposed structure also employs a momentarily current-boosting circuit to reduce the output voltage to the normal v...

This paper attempts to list challenges and possible solutions for designing integrated voltage controlled oscillators (VCOs) in wireless products. Such challenges include oscillation frequency, frequency coverage, linearity of tuning curves, phase noise, power consumption, oscillation amplitude variations, sensitivity to process, supply voltage, and temperature variations (PVT), coupling to and...

This paper is based on the EL mathematical model of the MMC synchronous rotating coordinate system, derived the MMC passive control law, the inner ring current passive controller is designed and the AC voltage controller is set. In order to restrain the negative sequence current caused by the network voltage unbalance or asymmetric AC system fault, the positive and negative sequence of independ...

Minimization of line losses and the improvement of power quality in distribution system are the most challenging problems, particularly when it is not economic to upgrade the entire feeder systems. This paper presents a new method to achieve the line loss minimum condition and improve power quality in radial and loop distribution system by using Unified Power Flow Controllers (UPFC), one of the...

This document describes the advantages of modern switching voltage regulators in a power distribution network (PDN) design to achieve the best FPGA transceiver performance. This white paper provides guidance on voltage regulator selection for low-noise applications, and a test case that demonstrates the transceiver performance for different types of voltage regulators and voltage rail configura...

By combining the field-weakening control principle of a new axial flux-switching permanent-magnet motor (AFFSSPM) with the space vector pulse width modulation (SVPWM) and maximum torque per voltage (MTPV) control principle, a novel field-weakening control strategy for AFFSSPM is proposed in this paper. In the first stage of the field-weakening, the difference between the reference voltage updat...

The paper presents a bandgap voltage reference (BGR) implemented in TSMC 0.25 m BCD technology for an automotive application. To withstand a car's battery large voltage variations, from 5V to 40V, the circuit features an embedded pseudo-regulator providing a stable bias current for the bandgap core. High-voltage (HV) MOS count has been kept low thus allowing the design of a compact BGR with an ...