Design and control of a reconfigurable high‐gain battery integrated dc‐dc boost converter for time‐varying loads

• Published in: International journal of circuit theory and applications 2021-02, Vol.49 (2), p.327-347
• Main Authors: Saxena, Anmol Ratna, Kumar, Deepak
• Format: Article
• Language: English
• Subjects: Batteries; battery integrated converters; battery power management; battery pulse charging (BPC); battery pulse discharging (BPD); Controllers; Converters; Design; Design parameters; high‐gain boost converter; multiport converter; Power management; Proportional integral derivative; Reconfiguration; SISO (control systems); Switches; Voltage converters (DC to DC); Voltage gain
• ISSN: 0098-9886; 1097-007X
• DOI: 10.1002/cta.2888

Summary In this paper, a reconfigurable, low component count high‐gain battery integrated dc‐dc boost converter (HGBIBC) is proposed for power management of time‐varying loads (TVLs). The battery is integrated between the two switches and the two diodes, which provides an inherent feature of pulse‐charging and pulse‐discharging of the battery, thereby increasing its lifetime. The converter operation, in various modes, is explained, and the steady‐state and time‐domain analyses are performed to establish the high‐voltage gain feature of the converter, which makes it suitable for interfacing sources with low output voltages. The guidelines for the design of converter parameters and selection of switching devices are presented. Small‐signal models are derived, and the relative gain array (RGA) analysis is performed, which revealed that the control loops are of decoupled nature and hence the controllers, for each loop, can be designed independently, as in the case of a single‐input single‐output (SISO) converter. The PID controllers are designed to simultaneously regulate the load voltage and source current. The theoretical concepts developed in the paper are validated experimentally using the laboratory prototype of the converter. The experimental results, demonstrating power management, at load voltages of 60 and 48 V are presented, which are found to be in close correlation with the theoretical and simulation studies. A reconfigurable, low component count high‐gain battery integrated dc‐dc boost converter (HGBIBC) is proposed and analyzed for power management of time‐varying loads (TVLs). The battery is integrated between the two switches and the two diodes, which provide pulse‐charging and pulse‐discharging of the battery and increase its lifetime. The converter operation, in various modes, is explained, and the steady‐state and time‐domain analyses are performed. The PID controllers are designed to simultaneously regulate the load voltage and source current.