Partial Power Conversion and High Voltage Ride-Through Scheme for a PV-Battery Based Multiport Multi-Bus Power Router

Abstract

With the development of renewable energy technology, distributed power supply mode with multi energy and multi-directional power flow including utility grid, renewable energy and energy storage unit has gradually become a research hotspot. An AC/DC hybrid multi-port power routing (MPPR) system which based on partial power conversion (PPC) of dual DC buses is proposed in this paper. The photovoltaic (PV) port, the battery port and two DC voltage buses form a power router. PV maximum power point tracking (MPPT) and high-voltage ride through (HVRT) of the grid-tied inverter are implemented by the same auxiliary port voltage modulation. The PPC based PV conversion features that only the power determined by voltage difference between PV panel and the series connected DC bus is dealt with, which significantly reduces the loss compared to the full power conversion (FPC) for PV. The detailed control schemes of all converters and energy transmit are given. The simulation and experimental results verify the effectiveness of the proposed scheme.INDEX TERMS Partial power conversion, multi-port power routing, high voltage ride-through, PV-battery, grid-connected system.

Cost optimization of electricity in energy storage system by dynamic programming

“…Dynamic programming is a useful technique for minimizing the cost of electric storage systems by addressing overlapping subproblems [17], [18]. It efficiently determines the best approach for charging and discharging the energy storage system over multiple time intervals [19], [20].…”

Electrical Grids Based on Power Routers: Definition, Architecture and Modeling

“…An example of the former category, [29], investigates the usage of PRs integrating different types of energy prosumers with a hierarchical control operation based on fuzzy logic. Reference [30] utilises PRs for enhancing the traditional PV-battery grid-connected structure. The PRG envisioned within this paper falls under the second category, which focuses on the operation of distribution grids in the presence of PRs.…”

“…1) To expand the analysis of [6], [12], [27], [28], [29], and [30] on PR by proposing a network of interconnected PRs in which each network node is based on a PR. This network is called in this paper the Power Router Grid (PRG).…”

Energy router interconnection system: A solution for new distribution network architecture toward future carbon neutrality

“…This is not only an inevitable choice for the recycling of energy, but also a major reform in the current energy development mode, and one that is more conducive to the sustainable development of the environment. Building EI in an all-around manner will be As shown in Figure 1, the energy router (ER) serves as the crucial node in the EI, and is also called a power router [21] or energy hub [22]. The ER is a type of multi-port intelligent power electronic device with control and communication functions [23][24][25].…”

“…As shown in Figure 1, the energy router (ER) serves as the crucial node in the EI, and is also called a power router [21] or energy hub [22]. The ER is a type of multi‐port intelligent power electronic device with control and communication functions [23–25].…”