<p>This paper presents a dc–dc converter with high-voltage gain, multi-input dual-output (MIDO) ports and bidirectional power flow. This converter is a hybrid configuration of a modified Dickson charge pump arrangement of diode-capacitor voltage multipliers. The steady-state analysis of the proposed dc–dc converter is performed under three different operating scenarios with relevant equations and waveforms. The steady-state analysis depicts the duty ratio control of the converter. The converter dynamics are modeled using small signal analysis and state space representation for different scenarios. Presence of coupled control loops within the MIDO system creates difficulty in the closed loop operation. Thus, a decoupled network method is applied to the transfer function gain matrix to derive an exact input–output-related transfer function; which provides better control. The transfer function analysis using bode plots was applied for stability analysis thus, aided by the design of compensators for closed loop control of the converter in different scenarios. A power management scheme was implemented for closed loop control of the proposed dc–dc converter for all scenarios with designed compensators. Finally, the proposed converter model is simulated using MATLAB/Simulink software. The simulation results validate the high-gain multi-input dual-output (MIDO) converter’s operation and control scheme for microgrid application. The proposed converter operation is also corroborated with real-time simulation results obtained with real-time digital simulator.</p>

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Development and Investigation Analysis of a New High-Gain Multi-input Dual-Output DC–DC Converter for Microgrid Application

  • Stutee Patra,
  • Aditi Chatterjee,
  • K. C. Patra,
  • Kanungo Barada Mohanty

摘要

This paper presents a dc–dc converter with high-voltage gain, multi-input dual-output (MIDO) ports and bidirectional power flow. This converter is a hybrid configuration of a modified Dickson charge pump arrangement of diode-capacitor voltage multipliers. The steady-state analysis of the proposed dc–dc converter is performed under three different operating scenarios with relevant equations and waveforms. The steady-state analysis depicts the duty ratio control of the converter. The converter dynamics are modeled using small signal analysis and state space representation for different scenarios. Presence of coupled control loops within the MIDO system creates difficulty in the closed loop operation. Thus, a decoupled network method is applied to the transfer function gain matrix to derive an exact input–output-related transfer function; which provides better control. The transfer function analysis using bode plots was applied for stability analysis thus, aided by the design of compensators for closed loop control of the converter in different scenarios. A power management scheme was implemented for closed loop control of the proposed dc–dc converter for all scenarios with designed compensators. Finally, the proposed converter model is simulated using MATLAB/Simulink software. The simulation results validate the high-gain multi-input dual-output (MIDO) converter’s operation and control scheme for microgrid application. The proposed converter operation is also corroborated with real-time simulation results obtained with real-time digital simulator.