The scene of electric power systems has changed drastically and will continue to do so in the years come. Causes this evolution are liberalization electricity markets increased use intermittent renewable energy. Uncertainty transmitted congestion lines raise need for new technologies. High voltage direct current (HVDC) is one these emerging technologies that may have a major impact, more specifically source converter (VSC) HVDC. main part paper verify feasibility, technical as well economic,...

Bidirectional DC-DC converters are critical aspects of integrating energy storage units with hybrid electric vehicle. In this brief, a new bidirectional converter is presented based on the quasi Z-source and switched capacitor network. The proposed can achieve higher voltage gain in lower duty cycle as compared to existing reported literature. achieves high low range thus avoids inductor core saturation problem converters. addition, exhibits stress across capacitors. operation, steady-state...

The DC-DC converters are the essential modules in electric vehicles, grid interface of renewable energy sources and DC power supplies. This paper presents a novel high gain bidirectional switched Z-source converter. proposed converter utilizes switched-capacitor concept with inductors for voltage gain. wide operating range operation both boost buck mode operation. has common ground between input output, uses only 5 active switches 4 passive elements reduce switch stress. current drawn from...

Numerous Z-source three-phase inverters are developed for realizing higher voltage gain which suitable to use in hybrid electric vehicle drive the machine. However, and current stress of passive elements semiconductor devices major limitations reported inverters. In this article, a new quasi-switched boost inverter is proposed has following features: 1) very low continuous input current; 2) reduced stress; 3) 4) shoot through immunity; 5) single stage conversion from dc ac; 6) improved...

Active switched inductor (ASL) dc–dc converters have very high step-up voltage gain but practically they suffer from stress across switches because of the resonance caused by mismatch among values and switch parameters. This article presents a new hybrid dc-dc converter topology derived ASL passive capacitors (PSC). The proposed has over wide range duty cycle. due to parameters is eliminated. low stress, current on circuit elements, common ground between input output ports. configuration,...

Summary A novel, high voltage gain, non‐isolated, non‐coupled DC‐DC converter is proposed for applications such as PV systems, HEV, aerospace, and so forth. The consists of two active switches in parallel, which are turned on off simultaneously, inductors parallel switched capacitors arrangements. During charging, both the inductor comes with source effectively reduces ripple current size. These factors attribute to lower power loss low cost. stress at least 5 times than output voltage,...

Boost-derived hybrid converter (BDHC) is a single-stage that produces both dc and ac output voltages. The operation of BDHC under continuous conduction mode satisfactory. However, the nonzero discontinuous (NZ-DCM) standalone restrict stable converter. To mitigate these limitations, modified (MBDHC) proposed in this paper. main idea behind changes to redeem NZ-DCM by forced (FCM). adverse effect analyzed terms voltage total harmonic distortion, ripple. This analysis further extended for...

This paper investigates the impact of synchronous distributed generation (DG) in MV network on coordination between overcurrent protection feeder and voltage dip sensed by customer at LV side. DG is expected to support keeping remaining a high during dip. location affects level that can provide. Depending location, either increase or decrease short circuit current. Both increasing decreasing current needs readjustment protection, ensure with downstream maximize A immunity sensitive equipment...

Switched boost inverter (SBI) is a high gain converter that uses the concept of Z-source but with reduced number passive elements. The analysis and operation SBI are already reported for continuous discontinuous input current these converters operate in restricted range duty cycle load variation. In certain situation, shows inadvertent behavior inductor tends to become equal AC current. This phenomenon creates ripple dc link voltage which causes increased THD at output voltage. Moreover, DC...

Generating DC and AC voltage from a single input, through stage conversion is cardinal for nanogrid applications. A boost derived hybrid converter one of the topology used application, which works well in continuous mode operation rendering both dc ac load simultaneously. Despite this converters successful performance conduction mode, undesirable results come to picture case discontinuous standalone operation. This paper focusses on providing solution above mentioned problems stabilise...

The coupled inductor based Z-source converter produces higher voltage gain with lower number of components count. In this paper, a new two winding mutually DC-DC is proposed to boost the gain. utilizes reduced passive elements count produce specially in duty cycle range. Moreover, are arranged auto-transformer fashion maximize effective turns ratio. Therefore, minimum used for realizing draws continuous input current and has common grounding which attractive features hybrid electric vehicle...

Various design techniques are available for cogging torque reduction of permanent magnet radial flux machines. Most them applicable axial Due to the manufacturing ease machine, additional freedom shaping can be exploited. To achieve torque, pole is varied from inner radius outer radius, which results a shape triangular magnet. In this paper, semi-analytical analysis field solution developed. The achieved by combining multi slice method and sub domain magnetic approach. Four different types...

In this paper, an interleaved boost converter topology with a high step up voltage gain and low source current ripple is proposed. The in two inductors are controlled phase opposition manner such that the reduces by greater extent. operating principles steady state analysis of proposed presented detail. offers full range duty cycle comparison to existing converters. Furthermore, stress across active switches, diodes passive elements low. feasibility validated through experimental studies on...

In this paper instantaneous no-load magnetic field analysis of a double stator rotor radial flux permanent magnet [DSDR RFPM] machine has been presented. To design optimally, it is important to know completely the densities in different parts machine. Flux density at surface obtained from used calculate open-circuit voltage The DSDR RFPM two active surfaces, patterns on both these surfaces have by presented paper. distribution region most parameter while designing Using paper, variation r-θ...

Numerous techniques have been proposed till now for the reduction of cogging torque in a permanent magnet machine. Most these are mainly based on design modification various machine parts such as tooth, slot or PM shape. However, influence modifications performance parameters not studied yet. This paper compares few taking into account amount achieved by each method. Their effect magnetic flux density distribution air gap, per phase induced emf and their harmonic analysis also analyzed. The...

The paper presents the analytical analysis of a new type linear tubular permanent magnet machine which uses radially magnetized magnets. These magnets have been in stepped manner instead uniform magnetization over complete length. improve sinusoidal nature waveforms radial flux density and induced emf by reducing their harmonics contents. An solution for no load magnetic field has presented. For optimal design machines, knowledge on stator surface is necessary this obtained from analysis....

This paper presents no load magnetic field analysis of a double-sided linear tubular permanent magnet machine (DSLTPM) with radially magnetized mover and iron-cored stator winding by using analytical method. Knowledge distribution inside the is essential for optimal design machine. The obtained use vector potential in 2D rz plane cylindrical coordinate their results are verified magnetostatic calculation based on finite element methods(FEM). close agreements FEM results, supports correctness...

A dual-rotor Hybrid Permanent Magnet Induction Machine (PMIM) having high torque and power capability possessing the advantages of both PM synchronous induction machines can be a suitable option for electric vehicle application. This paper deals with performance analysis various possible topologies PMIM conventional Squirrel Cage (SCIM) along their comparison each other. The aim this is to establish superiority over machine in terms efficiency. also identifies most topology among