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Multipulse Converter
Published in Vinod Kumar, Ranjan Kumar Behera, Dheeraj Joshi, Ramesh Bansal, Power Electronics, Drives, and Advanced Applications, 2020
Vinod Kumar, Ranjan Kumar Behera, Dheeraj Joshi, Ramesh Bansal
A direct AC-to-AC converter is used in powered varying speed drives for varying voltage and varying source frequencies. For MCs, the significant task of the SVPWM is to produce the necessary voltages while regulating the input currents or the power factor. The MC has one limit, because the highest accessible yield voltage in its linear modulation range is restricted to 86.6% of the original voltage. In essence, there are three MC power PWM systems. These include the PWM centered on the carrier, PWM space vector, and PWM techniques for specific harmonic extraction. The carrier-based PWM techniques can be used with advantages for inverter systems: (1) the control of the common-mode voltage and (2) the control of complex topologies for inverters such as multilevel inverters. A useful tool for a healthy three-phase output is the space vector modulation technique. However, its execution algorithm is quite hard, especially when the PWM performance is improved by common-mode controls. The MC operating frequency comes from two switching functions from the PWM converter and the modulation of the inverter. This technique has the benefit of having a well-established PWM space vector technique for the VSI modulation of the MC. While several calculations are necessary. The carriers of PWM were able to regulate the output power factor, peak-usage voltage, and modulate under uneven load voltage. As a prevalent manufacturing exercise, the SVPWM possesses flexible and many excellent features. However, more calculations and charts are needed to switch models according to the input current and output voltage sectors. Implementation is unintuitive because gating pulses are produced from the wait times calculated by the efficient time vectors.
Performance Analysis of Dual Space Vector Modulation Technique-Based Quasi Z-Source Direct Matrix Converter
Published in Electric Power Components and Systems, 2020
Maheswari K. Thangavel, Bharani Kumar Ramasamy, Prem Ponnusamy
Power converters play a predominant role in most of the applications since it serves as the conditioning interference between the source and the load. Among different types of power converter, the two kinds of power converters utilized for AC–DC–AC conversion are conventional AC–DC–AC converter and matrix converter (MC). The conventional AC–DC–AC converter is made up of rectifier followed by boost chopper and pulse width modulation (PWM) inverter with an intermediate DC link. Amei et al. [1] have proposed a simple and cheap configuration which consists of an uncontrolled rectifier, a boost chopper, and a voltage source inverter. Two-level back-to-back power converters are also presented in Wang et al. [2]. Li et al. [3] have introduced a two-stage conversion with a diode rectifier trailed by Z-Source Inverter.