Abstract
A multitask Asymmetrical Cascaded H-Bridge Multilevel Inverter (ACHMI), suitable for microgrid systems with possible unbalanced and nonlinear loads, is presented. The primary advantage of ACHMI is to produce a staircase output voltage utilizing unequal DC voltages such as Solar cells, fuel cells, batteries on the individual H-bridge cells. The ACHMI provide a large number of output steps without increasing the number of DC voltage sources and components where the difference between output waveform and reference sinusoidal waveform would be reduced. For grid connected mode of operation, the control strategy is based on the Conservative Power Theory (CPT), providing simultaneous functionalities for the Distributed Generation (DG) system to inject its available energy, compensate the load current distortions and allow a smooth transition between grid-connected and islanded modes of operation. For the islanded mode of operation, regulation of load voltage in a wide range of load conditions is presented. The Conservative Power Theory decompositions provides decoupled power and current references for the inverter control in abc-frame, offering a very flexible, selective and powerful strategy for the DG control system. The principles supporting the developed control strategy are discussed and analyzed and the effectiveness of the control is demonstrated through digital simulations conducted by means of PSIM.
| Original language | British English |
|---|---|
| Title of host publication | IEEE Industry Application Society - 51st Annual Meeting, IAS 2015, Conference Record |
| Publisher | Institute of Electrical and Electronics Engineers Inc. |
| ISBN (Electronic) | 9781479983933 |
| DOIs | |
| State | Published - 14 Dec 2015 |
| Event | 51st Annual Meeting on IEEE Industry Application Society, IAS 2015 - Addison, United States Duration: 11 Oct 2015 → 22 Oct 2015 |
Publication series
| Name | IEEE Industry Application Society - 51st Annual Meeting, IAS 2015, Conference Record |
|---|
Conference
| Conference | 51st Annual Meeting on IEEE Industry Application Society, IAS 2015 |
|---|---|
| Country/Territory | United States |
| City | Addison |
| Period | 11/10/15 → 22/10/15 |
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 7 Affordable and Clean Energy
Keywords
- Conservative Power Theory
- Digital Control
- Distributed Generation
- Microgrid
- Multilevel inverter
- Power Quality Improvement
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