A Robust Power Regulation Controller to Enhance Dynamic Performance of Voltage Source Converters

Shao, Tiancong; Jia, Pengyu; Zheng, Peiqi; Zheng, Trillion Q.; Wang, Jiuhe; Li, Hong; Liang, Mei; Zhang, Xiaochao

doi:10.1109/tpel.2019.2906057

Cited by 7 publications

(8 citation statements)

References 40 publications

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“…Stage 4 (t 3~t4 ): The V gs increases from the miller voltage to drive high-level voltage, and the current charges to C gs and C gd . The relationship between variables satisfies the Equations (1) and (2). When V gs equals to V D , the turn-on process is finished.…”

Section: Analysis Of Switching Process Of 3-pin Sic Mosfetsmentioning

confidence: 99%

“…Owing to the advantages of high power factor, low harmonic distortion, and bi-directional power flow, Pulse Width Modulation (PWM) rectifiers attract much attention from academia since their emergence and are widely used in industrial areas, such as renewable power generation [1,2], railway power supply [3,4], and electric vehicle (EV) charging [5,6]. The physical characteristics of semiconductor devices affect the performance of PWM rectifiers, while the conventional silicon (Si)-based semiconductor power devices have gradually reached their limits [7].…”

Section: Introductionmentioning

confidence: 99%

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Efficiency Optimization for All-Silicon Carbide (SiC) PWM Rectifier Considering the Impact of Gate-Source Voltage Interference

Wang

Zheng

et al. 2020

Energies

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Compared with conventional silicon (Si)-based Pulse Width Modulation (PWM) rectifiers, PWM rectifiers based on silicon carbide (SiC) Metal-Oxide-Semiconductor Field-Effect Transistors (MOSFETs) have significant technical advantages and broad application prospects in terms of efficiency and power density, inherited from the high-speed switching feature. However, high-speed switching also induces gate-source voltage interference, which impacts the overall character of the conversion system. This paper considered the impact of gate-source voltage interference on loss, revealing an efficiency optimization for all-SiC PWM rectifiers. Firstly, this paper theoretically investigated the mechanism of improving the conversion system efficiency by using the 4-pin Kelvin packaged SiC MOSFETs. Then, based on the industrial product case study, loss distribution, using different package styles, was quantitatively analyzed. Finally, experiment test results verified the efficiency improvement of the PWM rectifier with the 4-pin Kelvin package SiC MOSFETs.Energies 2020, 13, 1421 2 of 17 interference exceeds the switching loss reduction obtained by the high-speed switching, it makes no sense to increase the switching speed further.Many works of literature have discussed the gate-source voltage interference issue, mostly in phase-leg configuration. Zhang et al. [16] discussed the design of the digital isolator and the layout of Printed Circuit Board (PCB). A higher switching speed causes PWM signal distortion through the parasitic capacitance of the isolator. The distorted PWM signals may induce device gate-source voltage interference, and the optimized PCB layout would suppress this gate-source voltage interference. The limit of switching speed is given based on the mechanism of common-mode noise induced by parasitic capacitances in the isolator. The method of adding a shielding layer to the input channel of the isolator and adopting the Kelvin grounding structure is proposed to suppress the interference [17,18]. The crosstalk issue is another kind of gate-source voltage interference [19]. The drain-source voltage change of SiC MOSFET is coupled by Miller capacitance, which changes the displacement current, affects the gate current, and causes the gate-source voltage interference.For the suppression of the gate-source voltage interference issue, two methods are presented by Zhang et al [20]. Firstly, gate impedance regulation (GIR), which is an auxiliary circuit composed of one active device and a capacitor to reduce the gate impedance during the switching transients. Secondly, gate voltage control (GVC), which is an auxiliary circuit consisting of two active devices and one diode, pre-charging the gate-source capacitance before the switching transient. In the follow-up research, Zhang et al. [21] proposed an intelligent gate drive (IGD), where the auxiliary circuit is composed of two active devices and two diodes, to actively control the gate-source voltage and gate impedance under different switching transients. Active miller cl...

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Section: Analysis Of Switching Process Of 3-pin Sic Mosfetsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Efficiency Optimization for All-Silicon Carbide (SiC) PWM Rectifier Considering the Impact of Gate-Source Voltage Interference

Wang

Zheng

et al. 2020

Energies

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“…Let P be the active power at an equilibrium point z e as above. Assume that P andQ are not the exceptional pair M described in (24) and (25). Then the equilibrium angle δ e satisfies tan δ e = ω g LP −…”

Section: Equilibrium Points Of the Fifth Order Grid-connected Synchronvertermentioning

confidence: 99%

“…Most researchers seem to agree that the future inverters must inherit some features of synchronous generator and their prime movers, such as frequency and voltage droops and inertia, see for instance [1]- [3], [5], [8], [9], [11], [19], [23], [28], [30], [34]. One way to meet this demand are synchronverters, introduced in [35], and further developed in [2], [6], [7], [9], [10], [20], [22], [24], [25], [27]- [29], [31]- [33] and several other references.…”

Section: Introductionmentioning

confidence: 99%

The Sensitivity of Grid-Connected Synchronverters With Respect to Measurement Errors

Kustanovich¹,

Reißner

Shivratri

2021

IEEE Access

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The synchronverter algorithm is a way to control a switched mode power converter that connects a DC energy source to the AC power grid. The main features of this algorithm are frequency and voltage droops as well as synthetic inertia, so that the inverter resembles a synchronous generator (SG). Many versions of this algorithm have been proposed and tested, but all share the same "basic control algorithm", which is based on the equations of a SG. We analyze the sensitivity of the output currents of a synchronverter, with respect to the measurement errors. We show that some of the sensitivity functions exhibit high gains at the relevant frequencies, leading to distorted grid currents, which makes the use of this inverter control algorithm problematic. We then do a similar analysis assuming that we have controlled current sources available at the grid output of the converter, that we control using virtual currents generated in the algorithm. The virtual currents are flowing through virtual output inductors, that we can choose to be significantly larger than the actual output inductors. We show that using the current sources reduces the sensitivity considerably, thus indicating a better approach to synchronverter design.

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“…where K is the gain of field excitation loop. The gains, and , can be tuned to eliminate the resonant peaks and improve the dynamic response [36]. Figure 6.…”

Section: A Augmented Control Loopsmentioning

confidence: 99%

Synchronverter: A Comprehensive Review of Modifications, Stability Assessment, Applications and Future Perspectives

et al. 2020

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The increase in the penetration of renewable energy sources (RES) has reduced the effective inertia of the power system dominated by synchronous machines. The reduction in inertia has paved the way to the development of inertia emulation techniques, which complements the increased penetration of RES. The synchronverter technology is one among the virtual inertia emulation techniques which resembles close to the synchronous machine. The advancements in control and adaptations of synchronverter for various applications demand a comprehensive yet critical review. Thus, the main objective of this paper is to present a critical review of synchronverter technology which could increase the inertial response of RES. A critical analysis of modifications made to original synchronverter and the stability assessment techniques is presented. The effect of parameter variation on stability and dynamic performance is brought out as a decision matrix by analysing the movement of eigenvalues presented in various works. Towards the end, a synoptic overview is presented to depict the research trend and emphasize the domain which requires further attention. Furthermore, a brief discussion of the research gaps perceived during the phase of review is presented to leverage future research in the field.

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A Robust Power Regulation Controller to Enhance Dynamic Performance of Voltage Source Converters

Cited by 7 publications

References 40 publications

Efficiency Optimization for All-Silicon Carbide (SiC) PWM Rectifier Considering the Impact of Gate-Source Voltage Interference

Efficiency Optimization for All-Silicon Carbide (SiC) PWM Rectifier Considering the Impact of Gate-Source Voltage Interference

The Sensitivity of Grid-Connected Synchronverters With Respect to Measurement Errors

Synchronverter: A Comprehensive Review of Modifications, Stability Assessment, Applications and Future Perspectives

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