Simulation the Active Front End rectifier 1000V, 200A for Battery Energy Storage System

The Active Front End converter is used as a grid inverter in Battery Energy Storage Systems (BESS) as well as in solar power plants. In this paper, a converter 1000V, 200A was considered.

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Modeling goals:

• determination of the parameters of the components of the power circuit:

• AC filter

• inverter elements

• determination of the harmonic composition of the current through the AC filter

• adjusting the structure of the control system for a given application,

• adjustment of control system regulators for a specific task

• check in rectifier and inverter modes

• check in overload modes

• checking the reactive power regulation mode

• analysis of the results.

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The initial data were:

• power grid parameters,

• charge / discharge power parameters

• battery operating voltage range

• The criteria for achieving the goal were:

• provision of specified operating modes

• compliance with the parameters of the power grid for harmonics

• optimization (minimization) of parameters of circuit components

According to the simulation results have been given requirements for the parameters of circuit elements, parameter control, by the report.

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Structure of model:

• Voltage and current park transforms blocks

• D-Voltage and D-current controllers

• Q-Voltage and Q-current controllers

• Voltage inverse park transforms block

• Electric grid equivalent

• AC filter

• IGBT inverter

• Battery or equivalent

• PWM generator

• Voltage and current measurements (instant, RMS, Mean, THD values)

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