Speed control of an induction motor by V/F method using an improved Z source inverter

Amudhavalli, D.; Narendran, L.

doi:10.1109/iceteeem.2012.6494486

Cited by 11 publications

(4 citation statements)

References 4 publications

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“…where the subscripts 'ZSI' and 'ΣZSI' represent the traditional ZSI and ΣZSI, respectively. From (6), it can be determined that the dc-ac output voltage gain of the ΣZSI achieves a higher dc-ac voltage gain over the traditional ZSI when 1 , n Gi , 1, for i = 1 and 2. With a higher-boost capability, the voltage stress across the switching devices can be reduced.…”

Section: Circuit Analysis and Achievable Output Voltage Gainmentioning

confidence: 99%

“…This boosts the dc-link voltage and provides a single-stage buck-boost dc-ac power conversion. The ZSI has been used widely in applications such as photovoltaic system [2][3][4], electric drive [5,6] and uninterrupted power supply [7]. Nevertheless, the traditional ZSI suffers from limitations such as limited boost capability, discontinuous input current and high inrush current.…”

Section: Introductionmentioning

confidence: 99%

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Sigma‐Z‐source inverters

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2015

IET Power Electronics

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To increase the boost capability with minimum passive components, existing transformer-based Z-source inverter (ZSI) topologies require the turn ratio to be increased. This results in larger transformer windings to be used in high dc-ac voltage gain applications. This shortcoming is addressed in this study by introducing a sigma-ZSI (ΣZSI) that improves the dc-ac voltage gain by reducing the turn ratio leading to a lower winding transformer. The proposed topology is compared with the TZSI as they used the same number of transformers and capacitors configured in an X-shaped network. The comparison shows that the ΣZSI will have a higher dc-ac voltage gain at a turn ratio lower than 1.618 for a given shoot-through duty cycle allowing the use of smaller transformers. Simulation and experimental results have validated the effectiveness of the proposed ΣZSI.

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Section: Circuit Analysis and Achievable Output Voltage Gainmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Sigma‐Z‐source inverters

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2015

IET Power Electronics

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“…By varying the voltage and frequency, but keeping their ratio constant, the maximum torque developed can be kept constant throughout the speed range. In summary, using the V/F control method the following can be achieved: 1) the induction motor can be run typically from 5% of the synchronous speed up to the base speed (maximum vehicle speed), and the maximum torque generated by the motor can be kept constant throughout this range, 2) the starting current is lower, 3) the acceleration and deceleration can be controlled by controlling the change of the supply frequency [11].…”

Section: V/f Control Methodsmentioning

confidence: 99%

DSP based space vector PWM control for solar electric vehicle

Saidi,

Taleb,

Mansour

et al. 2024

J. Ren. Energies

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Solar Electric Vehicles (SEV) are considered the future vehicles to solve the issues of air pollution, global warming, and the rapid decreases of the petroleum resources facing the current transportation technology. However, SEV are still facing important technical obstacles to overcome. They include batteries energy storage capacity, charging times, efficiency of the solar panels and electrical propulsion systems. Solving any of those problems and electric vehicles will compete-complement the internal combustion engines vehicles. In the present work, we propose an electrical propulsion system based on three phase induction motor in order to obtain the desired speed and torque with less power loss. Because of the need to lightweight nature, small volume, low cost, less maintenance and high efficiency system, a three phase squirrel cage induction motor (IM) is selected in the electrical propulsion system. The IM is fed from three phase inverter operated by a constant V/F control method and Space Vector Pulse Width Modulation (SVPWM) algorithm. The proposed control strategy has been implemented on the texas instruments TM320F2812 Digital Signal Processor (DSP) to generate SVPWM signal needed to trigger the gates of IGBT based inverter. The inverter used in this work is a three phase inverter IRAMY20UP60B type. The experimental results show the ability of the proposed control strategy to generate a three-phase sine wave signal with desired frequency. The proposed control strategy is experimented on a locally manufactured EV prototype. The results show that the EV prototype can be propelled to speed up to 60km/h under different road conditions.

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“…The main distinguishing feature is the thoughtful rearrangement and positioning of these components within the topology. This nuanced yet strategic alteration bestows a substantial technical advantage upon the IZSI over the ZSI enhancing efficiency (Amudhavalli and Narendran in 2012), reducing voltage stress and improving surge control without imposing an economic burden. Structural enhancements often incur a notable financial cost due to increased components.…”

mentioning

confidence: 99%

Enhancing PV Systems with Intelligent MPPT and Improved control strategy of Z-Source Inverter

Bettahar,

Sabrina,

Achour

2023

Power Electronics and Drives

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The Improved Z-Source Inverter (IZSI) has gained attention in the photovoltaic industry for its ability to boost PV voltage with a single-stage topology, simplifying system design and reducing costs. However, research on integrating IZSI into PV systems, particularly regarding the Maximum Power Point Tracker (MPPT) and IZSI control strategy, is limited. This study proposes an Intelligent Improved Particle Swarm Optimization (IPSO) algorithm as an MPPT method for PV systems under constant and varying irradiance conditions. The IPSO algorithm is compared to the FPA, CSA, and traditional MPPT algorithm (PSO), and the results demonstrate that IPSO outperforms all algorithms in terms of speed, efficiency, and convergence in finding the Maximum Power Point (MPP). Two methods, Simple Boost Control (SBC) and Maximum Constant Boost Control with Third Harmonic Injection (THIMCBC), are employed to control IZSI. Simulation results using MATLAB-Simulink show that both strategies successfully find and track the MPP, but THIMCBC exhibits superior voltage-boosting performance compared to SBC. Overall, the proposed IZSI topology with the IPSO MPPT method and THIMCBC IZSI control strategy offers several advantages, including improved voltage boost ability, reduced z-source capacitor voltage stress, inherent inrush current limitation, and cost-effectiveness. These advantages make the proposed system a promising solution for photovoltaic systems.

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Speed control of an induction motor by V/F method using an improved Z source inverter

Cited by 11 publications

References 4 publications

Sigma‐Z‐source inverters

Sigma‐Z‐source inverters

DSP based space vector PWM control for solar electric vehicle

Enhancing PV Systems with Intelligent MPPT and Improved control strategy of Z-Source Inverter

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