Analysis of Carrier-Based PWM Patterns for a Three-Phase Five-Level Bidirectional Buck $+$Boost-Type Rectifier

This paper analyzes three different carrier-based modulation patterns applied to a three-phase high-power-factor-corrected (PFC) five-level buck+boost-type converter acting as an interface between dc distribution systems and an ac grid. The modulation is analyzed employing the space vectors theory so that the achievable performance is demonstrated. The main advantage of the analyzed modulation strategy is its simplicity, which makes it suitable for digital signal controller (DSC) implementations. This seems straightforward for voltage source converters, but is a challenge for current-multilevel converters that typically employ field-programmable gate array devices to achieve better harmonic distortion performance. This is due to modern power electronics DSCs being typically designed for other converter topologies. The power converter is constructed with two phase-shift-modulated six-switch buck-type PFC converters, paralleled by interphase transformers, and an inverting circuit. The system features: bidirectional current carrying capability; relatively low parts count; high utilization of the semiconductors; and low current and voltage ripple at its terminals. The principle of operation, detailed description, analysis of the modulation strategy, and dimensioning equations for three different power circuit realizations are described in this paper assuming the analyzed modulation patterns. The feasibility of the presented converter is demonstrated by means of a constructed hardware prototype.

[1]  T. Friedli,et al.  Swiss rectifier — A novel three-phase buck-type PFC topology for Electric Vehicle battery charging , 2012, 2012 Twenty-Seventh Annual IEEE Applied Power Electronics Conference and Exposition (APEC).

[2]  J. W. Kolar,et al.  Comparative evaluation of bidirectional buck-type PFC converter systems for interfacing residential DC distribution systems to the smart grid , 2012, IECON 2012 - 38th Annual Conference on IEEE Industrial Electronics Society.

[3]  Marcelo A. Pérez,et al.  Predictive control of modular current source converters , 2014, IECON 2014 - 40th Annual Conference of the IEEE Industrial Electronics Society.

[4]  Johann W. Kolar,et al.  Experimental evaluation of space vector oriented active DC-side current balancing of two parallel connected three-phase three-switch buck-type unity power factor rectifier systems , 2002, 24th Annual International Telecommunications Energy Conference.

[5]  J.W. Kolar,et al.  Comprehensive Design of a Three-Phase Three-Switch Buck-Type PWM Rectifier , 2007, IEEE Transactions on Power Electronics.

[6]  F. Wang,et al.  Improved charge control with adjustable input power factor and optimized switching pattern for a 150 kHz three-phase buck rectifier , 2008, 2008 Twenty-Third Annual IEEE Applied Power Electronics Conference and Exposition.

[7]  U. Drofenik,et al.  New wide input voltage range three-phase unity power factor rectifier formed by integration of a three-switch buck-derived front-end and a DC/DC boost converter output stage , 2000, INTELEC. Twenty-Second International Telecommunications Energy Conference (Cat. No.00CH37131).

[8]  Seung-Ki Sul,et al.  A new circuit design and control to reduce input harmonic current for a three-phase ac machine drive system having a very small dc-link capacitor , 2010, 2010 Twenty-Fifth Annual IEEE Applied Power Electronics Conference and Exposition (APEC).

[9]  J. W. Kolar,et al.  Hybrid Active Third-Harmonic Current Injection Mains Interface Concept for DC Distribution Systems , 2013, IEEE Transactions on Power Electronics.

[10]  M. L. Heldwein,et al.  Space Vector Modulation Strategy Applied to Interphase Transformers-Based Five-Level Current Source Inverters , 2012, IEEE Transactions on Power Electronics.

[11]  Tung Hai Chin.  A New Controlled Current Type Inverter with Improved Performance , 1979, IEEE Transactions on Industry Applications.

[12]  Keiichi Hirose,et al.  Development of 400 Vdc power distribution system and 400 Vdc output rectifier , 2009, INTELEC 2009 - 31st International Telecommunications Energy Conference.

[13]  T. Friedli,et al.  Towards a 99% efficient three-phase buck-type PFC rectifier for 400 V DC distribution systems , 2011, 2011 Twenty-Sixth Annual IEEE Applied Power Electronics Conference and Exposition (APEC).

[14]  M. L. Heldwein,et al.  Three-phase five-level bidirectional buck- + boosttype PFC converter for DC distribution systems , 2013, 2013 IEEE International Conference on Industrial Technology (ICIT).

[15]  Marcelo L. Heldwein,et al.  Three-phase modular multilevel current source rectifiers for electric vehicle battery charging systems , 2013, 2013 Brazilian Power Electronics Conference.

[16]  M. Jantsch,et al.  Inverters with three phase output and without electrolyte capacitor for improved lifetime, efficiency and costs of grid connected systems , .

[17]  Gui-Jia Su,et al.  Current source inverter based traction drive for EV battery charging applications , 2011, 2011 IEEE Vehicle Power and Propulsion Conference.

[18]  Tomonobu Senjyu,et al.  Optimal operation method for DC smart-house with smart grid considering forecasted error , 2011, 8th International Conference on Power Electronics - ECCE Asia.

[19]  Marcelo L. Heldwein,et al.  Dc current balancing control of a three-phase five-level bidirectional buck+boost-type converter , 2015 .

[20]  Johann W. Kolar,et al.  The essence of three-phase PFC rectifier systems , 2011, 2011 IEEE 33rd International Telecommunications Energy Conference (INTELEC).