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| Content Provider | IET Digital Library |
|---|---|
| Author | Singha, Amit Kumar Kapat, Santanu |
| Abstract | Digital implementation of current-mode control (CMC) considers the outer voltage-loop in the digital domain, whereas the inner current-loop is kept either in the analogue domain in mixed-signal CMC (MCMC) or in the digital domain in fully digital CMC (DCMC). Under finite voltage-loop sampling, this study reports that the selection of sampling point can completely change the stability status of a boost converter with non-minimum phase behaviour, particularly in the presence of the effective-series-resistance of the output capacitor. A discrete-time framework is proposed for fast-scale stability analysis in a boost converter, operating under continuous conduction mode. Further, discrete-time small-signal models are derived and design guidelines are proposed for both MCMC and DCMC architectures with enhanced stability for fast transient performance. Keeping in mind software-controlled DCMC, a considerably large sampling delay is considered, and its effect on the performance and stability is discussed. A boost converter prototype is tested and various DCMC schemes along the proposed design techniques are implemented using a field-programmable-gate-array device. |
| Starting Page | 1055 |
| Ending Page | 1065 |
| Page Count | 11 |
| ISSN | 17554535 |
| Volume Number | 11 |
| e-ISSN | 17554543 |
| Issue Number | Issue 6, May (2018) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-pel/11/6 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-pel.2017.0745 |
| Journal | IET Power Electronics |
| Publisher Date | 2018-01-24 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Analogue Domain Boost Converter Prototype Capacitor Continuous Conduction Mode Control System Analysis Control System Synthesis Current Control DCMC Architectures Design GuideLine Digital Control Digitally Current-mode Controlled Boost Converter Discontinuous Output-voltage Ripple Discrete Control System Discrete Time System Discrete-time Small-signal Model Effective-series-resistance Electric Current Control Fast Transient Performance Fast-scale Stability Analysis Field Programmable Gate Array Field-programmable-gate-array Device Finite Voltage-loop Sampling FPGA Logic Circuit MCMC Architectures Mixed-signal CMC Nonminimum Phase Behaviour Outer Voltage-loop Output Capacitor Power Converter Power Electronics Power Supply Sampling Delay Sampling Method Sampling Point Selection Software-controlled DCMC Stability Status Statistics Supervisory Circuit Synthesis Method |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electrical and Electronic Engineering |
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