Synchronous-Reference-Frame-Based Control of Switched Boost Inverter for Standalone DC Nanogrid Applications
- 10 August 2012
- journal article
- research article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Power Electronics
- Vol. 28 (3), 1219-1233
- https://doi.org/10.1109/tpel.2012.2211039
Abstract
Switched boost inverter (SBI) is a single-stage power converter derived from Inverse Watkins Johnson topology. Unlike the traditional buck-type voltage source inverter (VSI), the SBI can produce an ac output voltage that is either greater or less than the available dc input voltage. Also, the SBI exhibits better electromagnetic interference noise immunity when compared to the VSI, which enables compact design of the power converter. Another advantage of SBI is that it can supply both dc and ac loads simultaneously from a single dc input. These features make the SBI suitable for dc nanogrid applications. In this paper, the SBI is proposed as a power electronic interface in dc nanogrid. The structure and advantages of the proposed SBI-based nanogrid are discussed in detail. This paper also presents a dq synchronous-reference-frame-based controller for SBI, which regulates both dc and ac bus voltages of the nanogrid to their respective reference values under steady state as well as under dynamic load variation in the nanogrid. The control system of SBI has been experimentally validated using a 0.5-kW laboratory prototype of the SBI supplying both dc and ac loads simultaneously, and the relevant experimental results are given in this paper. The low cross regulation and the dynamic performance of the control system have also been verified experimentally for a 20% step change in either dc or ac load of SBI. These experimental results confirm the suitability of the SBI and its closed-loop control strategy for dc nanogrid applications.Keywords
This publication has 28 references indexed in Scilit:
- Ultra Step-Up DC–DC Converter With Reduced Switch StressIEEE Transactions on Industry Applications, 2010
- Dead Time Compensation Method for Voltage-Fed PWM InverterIEEE Transactions on Energy Conversion, 2009
- Diode-Assisted Buck–Boost Voltage-Source InvertersIEEE Transactions on Power Electronics, 2009
- High Conversion Ratio DC–DC Converters With Reduced Switch StressIEEE Transactions on Circuits and Systems I: Regular Papers, 2008
- High-Efficiency DC-DC Converter With High Voltage Gain and Reduced Switch StressIEEE Transactions on Industrial Electronics, 2007
- $Z$-Source Inverter for Residential Photovoltaic SystemsIEEE Transactions on Power Electronics, 2006
- Constant boost control of the Z-source inverter to minimize current ripple and voltage stressIEEE Transactions on Industry Applications, 2006
- Pulse-Width Modulation of$Z$-Source InvertersIEEE Transactions on Power Electronics, 2005
- Maximum Boost Control of the Z-Source InverterIEEE Transactions on Power Electronics, 2005
- High-efficiency, high step-up DC-DC convertersIEEE Transactions on Power Electronics, 2003