Bidirectional PWM Converter Integrating Cell Voltage Equalizer Using Series-Resonant Voltage Multiplier for Series-Connected Energy Storage Cells

 

ABSTRACT

 

This proposed integrated converter can be derived by combining a traditional bidirectional PWM converter and series resonant voltage multiplier (SRVM) that functionally operates as an equalizer and is driven by asymmetric square wave voltage generated at the switching node of the converter. The converter and equalizer can be integrated into a single unit without increasing the switch count, achieving not only system-level but also circuit-level simplifications. Open-loop control is feasible for the SRVM when operated in discontinuous conduction mode, meaning the proposed integrated converter can operate similarly to conventional bidirectional converters.

 

 

 

CIRCUIT DIAGRAM

 

 

EXISTING SYSTEM

In general, all the aforementioned equalizers are externally added to the string, as illustrated, and the bidirectional converter and equalizer(s) operate individually and independently. In other words, conventional energy storage systems require two functional components of the bidirectional converter and equalizer(s) to manage the string. If these two functional components can be integrated into a single unit, energy storage systems would be simplified by reducing the number of components.

PROPOSED SYSTEM

In this project, a bidirectional PWM converter integrating voltage equalizer for series-connected energy storage cells is proposed. The proposed integrated converter can be derived by combining a traditional bidirectional PWM converter and a series-resonant voltage multiplier (SRVM) that functionally operates as a voltage equalizer and is driven by an asymmetric square wave voltage generated at a switching node of the PWM converter. The bidirectional converter and voltage equalizer can be integrated into a single unit without increasing switch count, thus realizing not only system-level but also circuit-level simplifications.

 

TOOLS AND SOFTWARE USED:

  • MP LAB
  • ORCAD/PSPICE
  • MATLAB/SIMULINK

 

OUTPUT:

  • HARDWARE
  • SIMULATION

REFERENCE:

Masatoshi Uno, Member, IEEE, and Akio Kukita, “Bidirectional PWM Converter Integrating Cell Voltage Equalizer Using Series-Resonant Voltage Multiplier for Series-Connected Energy Storage Cells”, IEEE TRANSACTIONS ON POWER ELECTRONICS, VOL. 30, NO. 6, JUNE 2015.