Power control of three-phase energy storage inverter

What is a three-phase inverter?

As alternative energy sources become more common, the need for an interface between the energy sources and the existing power generation grid increases. Three-phase inverters are commonly used to convert the dc electric energy generated by alternative energy sources to ac electric energy that is compatible with the utility system .

How to control a three-phase inverter using current control?

From tracking the phase, the control of a three-phase inverter can be practically implemented using current control. Given a PLL system and current control algorithm, a Simulink model will be used to simulate the control of a three-phase inverter.

What control functions are included in a three-phase grid-connected inverter?

This chapter discusses the most fundamental control functions of a three-phase grid-connected inverter are included in the dynamic model such as the AC current control, phase-locked-loop, and DC voltage control. It introduces the concepts of decoupling gains and proportional grid voltage feedforward.

What are grid-connected inverters?

With the rapid development of distributed generation technologies, a large number of renewable energy sources, such as wind power, photovoltaic power and energy storage, are connected to the grids through power electronic devices, among which grid-connected inverters are the core components [1, 2].

How to improve the stability of grid-connected inverters?

Reference derived the parameter stability regions of grid-connected inverters in current source mode and voltage source mode based on the D-partition method, effectively improving the stability of grid-connected inverters during the short circuit ratio large fluctuations.

Are there any conflicts of interest in LCL-type inverters?

The authors declare no conflicts of interest. Abstract The LCL-type inverter is a core component in grid-connected renewable energy systems, with its performance heavily influenced by the controller. Conventional design methods of controller p...