A low cost inverter drive for 2-phase induction motor

Wekhande, Shashank; Chaudhari, B. N.; Dhopte, S.V.; Sharma, Rajan

doi:10.1109/peds.1999.794601

Cited by 21 publications

(9 citation statements)

References 3 publications

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“…where 0°< < 120° and the clamping interval is = 60°. After determining , other pole voltages can be determined by (8). As the proposed DPWM method has the same constraints as those of the CPWM method, the magnitude of the maximum synthesizable phase voltage is determined using (13), which is similar to that for CPWM.…”

Section: Proposed Dpwm For 3l2p Vsimentioning

confidence: 99%

“…Therefore, balancing resistors are used to divide the DC link voltage equally, which results in unnecessary power loss [7]. This power dissipation leads to wastage of the limited energy of batteries; if the capacitance of the split capacitor is not sufficiently large (because of size limitations), the magnitude of the output voltage fluctuates by the charge and discharge of the capacitor during driving of the system [8]. This fluctuation in the output voltage reduces the quality of the acoustic signal, which reduces the target imaging resolution of the sonar system.…”

Section: Introductionmentioning

confidence: 99%

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Discontinuous PWM Techniques of Three-Leg Two-Phase Voltage Source Inverter for Sonar System

2020

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Pulse width modulation (PWM) methods are important for the detection performance of a sound navigation and ranging (sonar) system because they determine the output noise of the system. However, only few studies have been conducted on PWM methods for reducing harmonics of a sonar system. In this study, we propose a discontinuous pulse width modulation (DPWM) method for three-leg two-phase (3L2P) inverters. Further, we derive a complete harmonic solution for a double-variable-controlled waveform for the proposed DPWM and conventional continuous pulse width modulation (CPWM) methods. Using these harmonic solutions, we analyze the normalized weighted total harmonic distortion (NWTHD) characteristics according to the modulation index (MI) of the inverter and phase difference of the output voltage for each method. Further, based on the results, we present a superiority map between the conventional CPWM and proposed DPWM methods in terms of the NWTHD. An NWTHD measurement experiment was performed to verify the proposed method. The experiment included additional evaluations of switch losses, phase difference variability, and voltage utilization, which are important factors for sonar systems. This is because improving only NWTHD performance while other factors degrade is not very useful. The results of the experiment confirm that the NWTHD for the proposed DPWM method was 92.5% of that for the conventional CPWM method. We confirm that the mean error of the NWTHD between the analytical and experimental values under similar conditions was less than ~2.2%. In addition, it was verified that the important factors, except NWTHD, were the same throughout additional experiments. Therefore, if the CPWM or DPWM method is selected based on the proposed selection criteria, realizing advantageous operation in terms of the NWTHD is possible.

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Section: Proposed Dpwm For 3l2p Vsimentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Discontinuous PWM Techniques of Three-Leg Two-Phase Voltage Source Inverter for Sonar System

2020

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“…In dos Santos et al (2010) different ac drive systems are conceived for multiple single-phase motor drives with a single dc-link voltage to guarantee installation cost reduction and some individual motor controls. In Wekhande et al (1999) and Jabbar et al (2004), Campos et al (2007a) and Campos et al (2007b), two topologies are considered. One is a Half-bridge inverter and the other is a three-leg inverter.…”

Section: Introductionmentioning

confidence: 99%

Space Vector PWM-DTC Strategy for Single-Phase Induction Motor Control

Nied¹,

Oliveira²,

Campos³

et al. 2011

Electric Machines and Drives

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“…There are three possibilities for the voltage inverter (4) . The first is a two phase H-bridge voltage inverter composed of two legs and a mid-point obtained by means of a capacitive divider (Fig.…”

Section: Introductionmentioning

confidence: 99%