A control strategy for parallel operation of single phase voltage source inverters

Lazzarin, Telles Brunelli; Bauer, Guilherme A. T.; Barbi, I.

doi:10.1109/iecon.2009.5414804

Cited by 9 publications

(13 citation statements)

References 15 publications

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“…Module 1 shows in detail the diagram voltage control. Controller C v is a proportional-integral-derivative (PID), as defined in (6). In this equation z 1 and z 2 are the zeros, p 1 is the pole and K cv is the gain of the controller.…”

Section: Control Strategy Of a Modular Single-phase Invertermentioning

confidence: 99%

High-output-voltage single-phase UPS based on series connection of low-output-voltage modular UPS

Lazzarin

Barbi

2011

XI Brazilian Power Electronics Conference

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Critical loads are usually provided by sources of uninterruptible power supply (UPS). Such devices have output voltages equivalent to levels found in commercial power grids. However, when high output voltages are required there is still no standard solution to achieve the desired level of voltage. This paper presents a proposal for developing a high-output-voltage single-phase UPS. This proposal is based on the series connection of several single-phase modules, which are compact, commercially available and of low cost, making this an attractive solution for use in industry. In this context, this paper introduces some principles regarding the series connection of UPS, which translates into the serial connection of voltage source inverters (VSIs). Furthermore, the study provides the experimental verification of the proposed system through the development of a prototype of 660V and 15kVA, obtained from the connection of three single-phase modules of 220V and 5kVA.

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Section: Control Strategy Of a Modular Single-phase Invertermentioning

confidence: 99%

High-output-voltage single-phase UPS based on series connection of low-output-voltage modular UPS

Lazzarin

Barbi

2011

XI Brazilian Power Electronics Conference

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“…However, recent researches are trying to improve the reliability and redundancy of the systems with communication, as in [1,2,3,4], where the authors proposed a control strategy for parallelism of single and three-phase VSIs that only voltage reference is the information exchanged among the inverters. Hence, strategies related to communication, such as central control [5,6,7], master-slave control [8,9,10] and distributed control [1,2,3,4,11,12,13] are been improved in terms of reliability and redundancy, which increases the potential them to be applied in the parallelism of UPS. On the other hand, there are traditional strategies without communication based on the frequency and voltage droop [14,15,16,17].…”

Section: Introductionmentioning

confidence: 99%

“…In the literature there are interesting studies reported [14,15,16,17] which minimize the disadvantages, in most cases addressing single-phase systems. This paper proposes a digital communication system based on Controller Area Network (CAN) to be applied in the presented control strategy in [1] for parallelism of three-phase VSIs. This work adds a Phase Lock Loop (PLL) and a CAN bus to the control system of [1] with goal for replacing its analog communication bus and improving the reliability and the redundancy of the system when there is a fault of electrical grid.…”

Section: Introductionmentioning

confidence: 99%

“…This paper proposes a digital communication system based on Controller Area Network (CAN) to be applied in the presented control strategy in [1] for parallelism of three-phase VSIs. This work adds a Phase Lock Loop (PLL) and a CAN bus to the control system of [1] with goal for replacing its analog communication bus and improving the reliability and the redundancy of the system when there is a fault of electrical grid. These new attributes added to the control increases its potential to be applied in the parallel operation of on-line UPS.…”

Section: Introductionmentioning

confidence: 99%

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A digital communication system for a control strategy employed in the parallelism of three-phase voltage source inverter

Arbugeri

Lazzarin

Mussa

2013

2013 15th European Conference on Power Electronics and Applications (EPE)

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This paper describes a theoretical and experimental study on a digital communication system, which is employed in a control strategy for parallelism of three-phase voltage inverter (VSI). This control strategy only needs that all VSIs use a same voltage reference and thus it ensures the sharing of the load current and avoids current circulation among the inverters during transient and steady-state operation. Therefore, the communication among the inverter is implemented to transmit only the voltage reference. The paper proposes this communication system based on two bus, one that uses the own electrical grid and is called of Voltage Reference bus and another makes by CAN bus. The first puts the reference voltage of all inverters in synchronism and the second keeps the reference voltage in synchronism even during a fault of electrical grid. The proposed system was digitally implemented in a TMS320F2812 DSP and was verified through experimental results with a 10 kVA prototype, which has the parallel operation of two three-phase VSIs.

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“…And the microgrids are requiring new control strategies and power architectures to deal with high power demand. I inverters in parallel is a well-known solution [1][2][3][4][5]. But a circulating current problem must be considered in parallel inverters system because of the different parameters of the parallel inverters [6][7].…”

Section: Introductionmentioning

confidence: 99%

Cross-circulating current suppression method for parallel three-phase two-level inverters

Wei

Guerrero

Guo

2015

2015 IEEE 5th International Conference on Consumer Electronics - Berlin (ICCE-Berlin)

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The parallel architecture is very popular for power inverters to increase the power level. This paper presents a m e t h o d f o r t h e p a r a l l e l o p e r a t i o n o f i n v e r t e r s i n a n a cdistributed system, to suppress the cross-circulating current based on virtual impedance without current-sharing bus and communication bus. Simulation and experimental results verify the effectiveness of the control method.

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A control strategy for parallel operation of single phase voltage source inverters

Cited by 9 publications

References 15 publications

High-output-voltage single-phase UPS based on series connection of low-output-voltage modular UPS

High-output-voltage single-phase UPS based on series connection of low-output-voltage modular UPS

A digital communication system for a control strategy employed in the parallelism of three-phase voltage source inverter

Cross-circulating current suppression method for parallel three-phase two-level inverters

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