Control Method of Electrolytic Capacitor-Less Dual Inverter-Fed IPMSM under Periodic Load Torque Fluctuations

Sakurai, Taiju; Ohno, Yuuki; Haga, Hitoshi

doi:10.1541/ieejjia.22003993

Cited by 6 publications

(3 citation statements)

References 22 publications

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“…The experimental results shown in Figs. 13 and 14 confirmed that the torque and current ripple improved when the proposed method was applied. Fig.…”

Section: Resultsmentioning

confidence: 68%

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Simplified Deadbeat Predictive Torque Control Based on Discrete Space Vector Modulation for Driving an Open-End Winding Permanent Magnet Synchronous Motor

Lee,

Hwang,

Lee

2024

IEEJ Journal IA

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This study proposes a simplified deadbeat (DB) predictive torque control (PTC) strategy for driving an open-end winding permanent magnet synchronous motor (OEW-PMSM) to reduce the torque and current ripple. The torque and current ripple are large because the conventional finite set PTC (FS-PTC) uses only one voltage vector in the sampling period. To avoid these problems, a simplified PTC strategy based on discrete space vector modulation (DSVM) is proposed to split the voltage vector into a virtual voltage vector and select the optimal voltage vector. Furthermore, the DB method is used to estimate the reference voltage angle and to thereby select an area that includes the candidate voltage vectors to reduce the computational burden. Among these candidate voltage vectors in the selected area, the optimal voltage vector can be selected by calculating the cost function. Therefore, one or more voltage vectors are used in the sampling period, reducing the torque and current ripple. The effectiveness of the proposed strategy is verified through simulation and experimental results.

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“…The experimental results shown in Figs. 13 and 14 confirmed that the torque and current ripple improved when the proposed method was applied. Fig.…”

Section: Resultsmentioning

confidence: 68%

“…12 shows the experimental waveform of the stationary d-q axis reference voltage. After the reference voltage angle is estimated by (13), the sector can be obtained. The coefficient is determined from the sector, as shown in Table 1.…”

Section: Resultsmentioning

confidence: 99%

Simplified Deadbeat Predictive Torque Control Based on Discrete Space Vector Modulation for Driving an Open-End Winding Permanent Magnet Synchronous Motor

Lee,

Hwang,

Lee

2024

IEEJ Journal IA

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“…FIGURE16. Short-circuit current waveforms of the overvoltage suppression method using new devices and after several cycles of operation using (a) the single short-circuit method and (b) the multiple short-circuit method with four short-circuits in a leg.…”

mentioning

confidence: 99%

Overvoltage Suppression in Initial Charge Control for DC Capacitor Using Multiple Leg Short-Circuits With SiC-MOSFETs in Power Converters

Mannen

Wãda

2023

IEEE Open J. Power Electron.

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This paper proposes an improved overvoltage suppression method for the initial charge of the dc capacitor in voltage source power converters. The proposed method makes multiple short-circuits in each leg, utilizing power devices in the converter. These short-circuits discharge the dc capacitor and suppress overvoltage caused by resonant effects during the initial charge. The utilization of short durations of short-circuits multiple times in each leg reduces the power consumption in the power devices and results in a decrease in the peak junction temperature. Experimental verification using a 200-V, 5-kVA three-phase converter demonstrates that the proposed multiple short-circuit method reduces power consumption by 6% and suppresses device degradation by more than 40 times compared to the previously proposed single short-circuit method. The experimental results exhibit the effective overvoltage suppression capability of the proposed method with modest device degradation. As a result, the proposed method allows for the elimination of the initial charge circuit, leading to reductions in the size and cost of power converters, particularly in PWM rectifiers.INDEX TERMS Electrolytic capacitorless power converter, initial charge, short circuit, SiC-MOSFET.

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Survey and Analysis for High Power Factor IPMSM Drive System Using Electrolytic Capacitor‐Less Inverter

Ohishi,

Haga,

Abe

2024

IEEJ Transactions Elec Engng

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Home appliances such as residential air conditioners are based on the variable speed drives for AC motors such as IPMSM and IM. These variable speed drives always require the simple and low‐cost system configurations without the large electrolytic capacitors, reactors, and power devices that consist of PFC converters. This paper surveys and analyzes the proposed and advanced control techniques to achieve high input power factor and sinusoidal source current control in electrolytic capacitor‐less inverters. The investigated control methods consist of control algorithms based on the energy flow between input and output of the electrolytic capacitor‐less inverter, and all of them are useful as high‐power factor control methods for compressor drive motors such as air conditioners. Moreover, these techniques realize the variable speed drives for AC motors to meet power supply harmonics regulations (IEC61000‐3‐2). © 2024 Institute of Electrical Engineers of Japan and Wiley Periodicals LLC.

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Control Method of Electrolytic Capacitor-Less Dual Inverter-Fed IPMSM under Periodic Load Torque Fluctuations

Cited by 6 publications

References 22 publications

Simplified Deadbeat Predictive Torque Control Based on Discrete Space Vector Modulation for Driving an Open-End Winding Permanent Magnet Synchronous Motor

Simplified Deadbeat Predictive Torque Control Based on Discrete Space Vector Modulation for Driving an Open-End Winding Permanent Magnet Synchronous Motor

Overvoltage Suppression in Initial Charge Control for DC Capacitor Using Multiple Leg Short-Circuits With SiC-MOSFETs in Power Converters

Survey and Analysis for High Power Factor IPMSM Drive System Using Electrolytic Capacitor‐Less Inverter

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