Current Control for Utility Interactive Inverter Using Multisampling Method Based on FPGA

Yokoyama, Tetsuji; Komiyama, Tsuyoshi; Shimada, E.

doi:10.1541/ieejias.130.51

Cited by 9 publications

(4 citation statements)

References 5 publications

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“…Furthermore, it is not possible to perform coordinate translation for conversion into DC, which is possible with the three‐phase AC. For this reason, the internal model principle, deadbeat control, hysteresis control, and the like, have been proposed for controlling single‐phase inverters . Especially, the deadbeat control is faster than any other control such as PI control.…”

Section: Introductionmentioning

confidence: 99%

Loss analysis and efficiency enhancing method for a unipolar hysteresis‐Controlled single‐phase grid‐connected inverter

Haruna

Masubuchi

Iwase

et al. 2018

IEEJ Transactions Elec Engng

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This paper compares control schemes using hysteresis control and a conventional triangle-carrier comparison control to discuss the theoretical efficiency of a grid-connected inverter. Control schemes for the gird-connected inverter are actively studied to improve the efficiency and performance of the system. Hysteresis controls are one of the solutions to satisfy these issues. However, the theoretical efficiency under the same performance using conventional carrier comparison method has not been discussed. This paper considers the performance of unipolar and bipolar hysteresis control compared with unipolar and bipolar carrier comparison methods by theoretical calculations, simulations, and experimental results. As a result, we find that unipolar hysteresis control can improve the efficiency of the inverter.Junnosuke Haruna (Member) received the B.S., M.S., and Ph.D. degrees in electrical engineering

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Section: Introductionmentioning

confidence: 99%

Loss analysis and efficiency enhancing method for a unipolar hysteresis‐Controlled single‐phase grid‐connected inverter

Haruna

Masubuchi

Iwase

et al. 2018

IEEJ Transactions Elec Engng

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“…In case of a threephase power system, instantaneous voltage phase and amplitude can be detected via coordinate transformation; however, in case single-phase system, voltage cannot be easily transformed to orthogonal coordinates. In this context, the authors proposed PLL control using quasi dq transformation [4,5], and combined it with deadbeat control in interactive utility inverters [7] to obtain good results [8][9][10][11]. On the other hand, higher sampling frequencies become possible with progress in A/D converters, thus promising improvement of control characteristics for instantaneous system response, which was difficult before.…”

Section: Introductionmentioning

confidence: 99%

“…As regards control response in FRT, researchers aimed not only at meeting FRT requirements, but also at clarification of fast digital control performance through examination of possibility for operation continuity in transient states caused by system disturbances. In previous research, FPGA technology was used to suppress the influence of sampling delays, and improve responsiveness, through acceleration of control calculations [9,13]; however, there are no studies dealing with disturbance compensation and constant 1-MHz PLL control to improve responsiveness under FRT requirements. We compared single-rate deadbeat control (SRDB) and multirate 2-DOF deadbeat control [14].…”

Section: Introductionmentioning

confidence: 99%

Deadbeat Control with Disturbance Compensation Method and 1 MHz‐PLL for Single Phase Utility Interactive Inverter

Hanashima

Yokoyama

2017

Electrical Engineering Japan

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SUMMARYIn the near future, many distributed power systems will be connected to utility lines in the local area. The demand for control accuracy of utility interactive inverters will likely increase beyond present capabilities. The utility interactive inverter requires FRT capability to compensate for utility voltage fluctuations. A deadbeat control with disturbance compensation and 1 MHz-PLL control with quasi-dq transformation were applied to a utility interactive inverter using an FPGA based hardware controller. The FRT characteristics were verified through simulations and experiments, and the superior characteristics of the proposed method were verified.

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“…The recent research studies pursuing stability of control function and improvement of target value tracking characteristic include a multisampling method, in which multiple rounds of sampling are performed in one switching cycle . This method, however, bears risks of malfunctioning or deterioration of controllability since it is more frequently exposed to the switching noises as compared with the synchronous sampling method.…”

Section: Introductionmentioning

confidence: 99%

Current Control of a Single‐Phase Inverter by Applying a Multisampling Method

Takeuchi

Wada

2016

Elect Comm in Japan

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SUMMARY In digitally controlled circuits for power electronic circuits, sampling data are important because the digital control circuit is operated on the basis of these data. If the sampled values have been affected by switching noise from the power circuit, the control stability of the circuit would be disturbed. This paper proposes a noiseless sampling method that can sample a value without being affected by the switching noise. The synchronous sampling method may be affected by the switching noise depending on the duty ratio of the circuit. The noiseless sampling method does not obtain data immediately after turn‐on and turn‐off switching. The control circuit can avoid the switching noise by using noiseless sampling, which leads to a disturbance in the control circuit and enhances the robustness of the circuit when applying the multisampling method. Experimental results are presented to verify that the current control of the proposed sampling method is not disturbed by the switching noise even in the absence of a noise filter.

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Current Control for Utility Interactive Inverter Using Multisampling Method Based on FPGA

Cited by 9 publications

References 5 publications

Loss analysis and efficiency enhancing method for a unipolar hysteresis‐Controlled single‐phase grid‐connected inverter

Loss analysis and efficiency enhancing method for a unipolar hysteresis‐Controlled single‐phase grid‐connected inverter

Deadbeat Control with Disturbance Compensation Method and 1 MHz‐PLL for Single Phase Utility Interactive Inverter

Current Control of a Single‐Phase Inverter by Applying a Multisampling Method

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