In recent years, the power electronic load infiltrates into microgrid in form of constant power, and its negative impedance characteristics threaten stability system. To alleviate instability caused by loads (CPLs) (CILs) boost converter DC microgrid, an adaptive backstepping control (BSC) method is designed. Firstly, based on dynamic model converter, input voltage estimator designed, which int...

This paper presents a new high-power step-up DC/DC converter topology with high-frequency isolation intended for residential fuel cell power systems. In contrast to traditional voltage source converters, the proposed topology utilizes the Z-source (impedance source) network represented by a combination of two inductors and two capacitors on the input side of the DC/DC converter. Due to the spec...

It is known that constant power load (CPL) may cause a negative impedance, which seriously affects the stability of system. In this paper, new control algorithm for DC–DC buck converter feeding unknown CPL proposed. First, under assumption extracted load, standard passivity–based (PBC) presented to reshape system energy and compensate impedance proportion-integration (PI) action around passive ...

This paper presents a compact programmable biphasic stimulator for cochlear implants. By employing double-loop negative feedback, the output impedance of the current generator is increased, while maximizing the voltage compliance of the output transistor. To make the stimulator circuit compact, the stimulation current is set by scaling a reference current using a two stage binary-weighted trans...

A fully integrated successive-approximation (SAR) switched-capacitor (SC) DC–DC converter is presented that overcomes the coarse output voltage resolution limitation of traditional SC converters. An SAR SC converter cascades multiple stages of 2:1 SC converters, and achieves a fine-grained conversion ratio resolution of VIN/2 , where VIN is the input voltage and N is the number of stages. As th...

In this work, we present new topologies for realizing one lossless grounded inductor and two floating, one lossless and one lossy, inductors employing a single differential difference current conveyor (DDCC) and a minimum number of passive components, two resistors, and one grounded capacitor. The floating inductors are based on ordinary dual-output differential difference current conveyor (DO-...

The design of a power buffer to mitigate the negative impact of constant power loads on voltage stability as well as enhancing ride-through capability for the loads during upstream voltage disturbances is examined. The power buffer adjusts its front-end converter control so that the buffer-load combination would appear as a constant impedance load to the upstream supply system when depressed vo...

This paper presents a new consistent analysis of self-oscillating active inductors together with a complete design example of a 90 nm CMOS current controlled oscillator (CCO) for ISM applications. Using the proposed passive compensation method in place of a standard negative impedance converter, typical performance of active inductor oscillator is achieved with reduced static power consumption....

This work analyses the conducted EMI generated by an inverter-fed induction motor drive system with the pulse with modulation (PWM) as one of the most difficult current technical problem which limits power electronics drive's evolution. The analysis of the impedance characteristics of the converters load (motor and cable) is fundamental to interpret the common and differential mode of emission ...