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Active islanding detection schemes are useful to avoid energizing local power systems during fault and grid failure conditions. These types of islanding conditions not only lead to unsafe and unreliable power delivery to the loads and grid, but can cause damage to equipment as well as raising safety concerns for workers and users. This work presents a method of active islanding detection for single-phase...
This paper compares different control schemes for single-phase PWM inverter to achieve zero steady-state error under large varying load conditions. PR control and load current feedback control improve the steady-state and transient performance respectively. However, the load current feedback control is subject to control stability issue under some load conditions. The PR and synchronous d-q frame...
This paper explores using modular power electronics building blocks (PEBBs) in building power electronics based controllers for utility systems applications. The analysis of the existing and proposed controller functions identifies three basic PEBB converter functions for power system controllers: bidirectional AC switch, bidirectional AC/DC voltage source converter, and DC/DC converter. A hierarchical...
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