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This paper analyzes consumers' benefit, which is the monetary gain delivered to consumers, in a matching problem on transactions of electricity between suppliers and consumers. A previous study has dealt with a social welfare maximization problem to find a matching on an electricity market model. That problem, however, does not involve a solution of the matching in which all consumers can gain benefit...
A kind of LLC resonant converter with voltage-doubling rectifier technology is studied in this paper. The converter has not only a general LLC half-bridge resonant converter being easy to obtain ZVS for primary side switches and ZCS for secondary side diodes, a high efficiency of this topology, but also advantages that the transformer structure is simple in which one winding is involved on its secondary...
The output voltage range of renewable energy generations such as wind and photovoltaic can be influenced by the parameters of environment at a wide range, which can not satisfy the requirements of system for grid-connected operation. Therefore high-gain voltage inverter is important to integrate the renewable energy into the utility. For high-gain voltage and standard load voltage at low input DC...
The power/signal synchronous transmission between converters has attracted much attention since no extra independent signal transmitting equipment is required. In this paper, bifurcation behaviors of a cascaded two-stage Buck-Boost converter are discussed by simplifying the second stage boost converter as constant power load. The amplitude variation of the bus voltage caused by bifurcation is used...
This paper presents a mixed three-level neutral point clamped (NPC) inverter with hybrid modulation method. It enables traditional Si devices and wide bandgap devices integration to reduce power loss and achieve high power density. Simulation results are firstly provided to verify the validity of the proposed approach.
This paper presents a hybrid multilevel inverter with DC bypass. Mixed modulation method is proposed to balance dc voltage, and enables Si devices & wide bandgap devices integration to reduce power loss and achieve high power density. Simulation results are firstly provided to verify the validity of the proposed approach.
This paper presents discontinuous pulse width modulation (DPWM) scheme for a modular multilevel converter (MMC) to achieve an advanced switching losses reduction. The MMC is considered to be one of the most attractive multilevel topology for high-power applications because of the features of its high power quality, modularity, and availability. However, the MMC has large switching losses because of...
This paper proposes optimal switching period phase-shifted method for slave inverter to reduce grid current ripples in synchronized two parallel three-phase grid-connected voltage-source inverters (VSI). In parallel operation, a 180 degree phase shifted method generally takes of advantage of reducing grid current ripples in same DC-link voltage for each grid-connected VSI. However, in case of unequal...
This paper proposes an improved phase-shifted pulse-width modulation (PS-PWM) method for a three-phase cascaded H-bridge (CBH) multi-level inverter. In the proposed PS-PWM method, the switches at one leg of H-bridge cell (HBC) only operate and the switches at other leg are clamped. Therefore, the number of the multi-carrier signals depending on the voltage level can be reduced in half compared to...
Communication traffic continue to improve due to the rapid growth in broadband access in recent years, frequently based on PIN or tunnel devices. The present paper discuses two kind of tunnel devices, in a vertical configuration through the cross-section, allowing the tunnel current flow from upper anode to bottom cathode: PIN and NOI device in a planar technology (p-NOI). Recently, the NOI — Nothing...
In order to reduce the Common-Mode Voltage (CMV) in three-to-five phase indirect matrix converters, three improved Space Vector Pulse Width Modulation (SVPWM) methods are proposed and discussed. The improved modulation schemes are achieved by reorganizing zero vectors from the inversion stage to the rectification stage. The proposed methods can not only theoretically reduce the CMV peak value by up...
This paper presents a flyback converter based partial power processing structure for battery energy storage system (BESS). It combines both of the battery balancing functionality and power stage regulation functionality into one system. The proposed BESS only have one control variable which is the common duty cycle for all the flyback converters. It is used for the voltage or current regulation. There...
The Network on-Chip (NoC) is considered as an emerging technology for distributed embedded systems which is proposed as an alternative interconnection solution in Mutli-Processors System on-Chip (MPSoC). This paper proposes a graphical toll that allows researchers to generate and configure quickly their Network on-Chip in the hope to evaluate easily their contributions in no time. Unlike major existing...
In this paper, a predictive direct power control (P-DPC) strategy for a three level NPC rectifier under ideal grid voltage is proposed, discussed and applied. With the proposed P-DPC strategy, the control targets are the active power, the reactive power and the neutral potential voltage; neither hysteresis comparators nor switching table are needed; sinusoidal input current with low total harmonic...
This paper proposes an application of adaptive dual current mode control (ADCMC) on bidirectional bridgeless power factor correction (BBPFC) boost rectifier with unipolar switching. The given simulation results confirm the benefits of the proposed control strategy of the BBPFC converter, primarily regarding the maintaining of the sine waveform of the average inductor current.
In this paper, a high gain boost converter based on the voltage-lift technique is proposed. The converter is composed of basic quasi-Z-source cell and a voltage-lift cell which contains one capacitor, two inductors and diodes. Contrasted with the traditional quasi-Z-source DC/DC converter, a relatively high voltage conversion and the reduction of the input current ripple can be achieved with the presented...
Hybrid Electric Vehicles (HEVs) require the power to drive the vehicle via a combination of internal combustion engine (ICE) and electric motors. To improve the drivability, the smooth torque change during the driving mode switching is essential. This task can be achieved by using the coordinated control strategy. This paper presents a coordinated control strategy which can effectively suppress the...
Traditional Z-source inverter can boost or buck voltage for its unique impedance network, but also has its own drawbacks, such as input current is not continuous, boost capacity is limited, the capacitor voltage stress is large and etc. In order to overcome the shortcomings of the traditional Z-source inverter, a series of Z-source inverters are proposed. In this paper, the topology of three kinds...
A simulation system of distribution network design and development based on similarity principle is introduced. This simulation system includes primary simulation system and secondary control system, the primary system simulates a 10kV neutral indirectly earth distribution system, which includes a bus, four feeders with different types and different length. System structure and parameter calculation...
In this paper, a concept is presented for simplifying and accelerating the development and testing process of a Permanent Magnet Synchronous Machine (PMSM), or its control unit, without utilizing any actual electric machine. The proposed Permanent Magnet Synchronous Machine Emulator (PMSME) utilizes the Power-Hardware-In-the-Loop (PHIL) concept to reproduce the mechanical and electrical characteristics...
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