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2020 4th International Conference on HVDC (HVDC), 2020
This paper presents a general analytical method of the dc-link voltage ripple to facilitate the dc-link capacitor design for the three phase voltage source converters (VSCs) under harmonic ac currents. The expressions of the dc-link low order harmonic (LOH) voltages and switching harmonic voltages (SRVs) are derived, respectively.
Lei Yang +3 more
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This paper presents a general analytical method of the dc-link voltage ripple to facilitate the dc-link capacitor design for the three phase voltage source converters (VSCs) under harmonic ac currents. The expressions of the dc-link low order harmonic (LOH) voltages and switching harmonic voltages (SRVs) are derived, respectively.
Lei Yang +3 more
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Capacitor voltage ripple minimization in modular multilevel converters
2015 IEEE International Conference on Industrial Technology (ICIT), 2015Modular multilevel converters provide high power quality, high reliability and flexible voltage and power scalability. However, large capacitor voltage ripple is one of the main drawbacks of this topology. This ripple reduces the capacitor lifetime and, due to the large capacitance required to limit it, increases the size and cost of the converter.
Marcelo A. Pérez, Steffen Bernet
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A CMOS ripple detector for integrated voltage regulator testing
2015 IEEE 58th International Midwest Symposium on Circuits and Systems (MWSCAS), 2015This paper will present an RMS based ripple sensor for testing of fully integrated voltage regulators. A DC signal which is proportional to the input ripple amplitude is generated. Final digital pass/fail signal is obtained with a clocked comparator. The sensor can detect a peak-to-peak ripple voltage of up to 50 millivolts on the 1.2 volts supply rail
Cagatay Ozmen +4 more
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Ripple Voltage Mitigation for Multilevel SSBC STATCOM
2020 IEEE 9th International Power Electronics and Motion Control Conference (IPEMC2020-ECCE Asia), 2020Performance of multilevel single-star bridge-cell (SSBC) STATCOM is affected by the low-frequency oscillation in the dc capacitors’ voltages which is originated due to the double line frequency component on the absorbed active power. To avoid using big capacitors to limit this oscillation.
Saif A. M., Cecati C., Buccella C.
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Photovoltaic inverter with power decoupling ripple-port for DC voltage ripple minimization
2017 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC), 2017A single-phase photovoltaic inverter presents a double line frequency voltage ripple which means it needs a bulky capacitor for reducing this issue, however, it causes power density decreases. The approach of this paper is to obtain high conversion efficiency, using film capacitors instead of the electrolytic capacitors in order to minimize double-line-
L. O. A. Valle +4 more
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Voltage and Current Ripple in Rectifier Systems
IEEE Transactions on Applications and Industry, 1963In a rectifier system with inductive load circuit the current fluctuations correspond to the time integral of the voltage absorbed by the inductance, while in a circuit with an L-C filter the current ripple is defined by the harmonic composition of the output voltage.
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Effective value of direct-voltage ripple
Transactions of the American Institute of Electrical Engineers, Part I: Communication and Electronics, 1961Rectifiers produce a ripple of the direct-voltage output. Because it has many different shapes, it is hard to describe in simple terms except by the effective (root-mean-square) value of the ripple voltage, giving only one number to designate its magnitude.
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Winding scheme to reduce voltage and torque ripples
2016 XXII International Conference on Electrical Machines (ICEM), 2016Voltage and torque ripples can reduce control precision and increase vibration and noise in electric vehicles, servo systems, or wind generators. To address this problem, we proposed a novel winding method in which three phase coils are wound around each tooth, with each coil having a different number of turns around a given tooth. The proposed winding
K. Sakai, M. Suzuki, M. Kitano
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Centralized ripple control on high-voltage networks
Journal of the Institution of Electrical Engineers - Part II: Power Engineering, 1948Appreciable developments in the design and application of ripple-control equipments have taken place during the past ten years. The paper reviews the progress made and indicates the modern requirements of such systems in view of their proved value to the supply authority and their anticipated widespread use.
T.W. Ross, R.M.A. Smith
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A 80V output voltage boost converter with low voltage ripple for Avalanche Photodiode(APD)
2011 IEEE International Symposium of Circuits and Systems (ISCAS), 2011The Avalanche Photodiodes (APDs) are widely used in a variety of optical application requiring high sensitivity, such as long-distance optical communication and optical distance measurement, because the APDs can detect the low level light. APDs accompanied with the Transimpedance Amplifier (TIA) are utilized on the receiver side in the communication ...
Yao-Yi Yang +8 more
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