This paper proposes a novel bus voltage control strategy based on LADRC, taking the grid-connected DC microgrid as the backdrop and the bidirectional grid-connected inverter as its research object. ou...
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To solve these problems, this paper introduces a unified dynamic power coupling (UDC) model. This model''s active power control loop can be tailored to meet diverse requirements. By implementing a
In the off-grid microgrid cluster, the energy storage device is mainly charged and discharged to maintain the stability of the bus voltage and the system power balance. Generally, the
Aiming at the problem that the double closed-loop energy storage control strategy cannot accurately control the bus voltage when dealing with large load fluctuations, this paper proposes an improved
The transfer function of the current double closed loop is derived and the control parameters of the double closed loop are designed by using the open loop root locus and the open
Hardware-in-the-loop (HIL) testing is used by controller devel-opers and utilities to evaluate the controllers under stressful conditions. In this work, a microgrid control function devel-oped by the
In view of problems such as low accuracy, poor reliability, and difficulty in operation caused by the performance test of conventional battery discharge using variable resistors, a battery...
The simulation results show that the dual-closed-loop PI control algorithm can continuously stabilize the output waveform of the controllable voltage source.
The most common control method for grid-connected inverters is voltage and current double closed-loop control based on a proportional-integral (PI) regulator. This control method can
The double closed-loop controller which is shown in Fig. 3b can achieve the zero steady-state error of the reference voltage and current, and improve the control stability.
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