High-Speed Controller to Enhance Responsiveness and Stability of Dynamic Characteristics for DC-DC Converter

In general, the DC load is electrically sensitive to the input voltage and current compared to the AC load. As the demand for digital systems that require DC power increases rapidly, the importance of stable DC power supply methods is increasing. Various elements such as renewable energy and load ar...

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Bibliographic Details
Published in:IEEE transactions on industrial electronics (1982) 2024-04, Vol.71 (4), p.1-9
Main Authors: Lee, Jung-Hwan, Park, Sung-Jun, Lim, Sang-Kil
Format: Article
Language:English
Subjects:
Active control
Bi-direction DC/DC Converter
Bidirectional control
Control methods
Control systems
Controllers
Couplings
Data buses
DC power supply system
Digital systems
Dynamic characteristics
Dynamic stability
Electric potential
Electric power supplies
Electric power systems
Electrical loads
Energy storage
energy storage system
flux linkage
High speed
Inductors
Power control
Power converters
Power supply
Pulse duration
Switches
Systems stability
Transient analysis
transient high-speed controller (THSC)
Voltage
Voltage control
Voltage converters (DC to DC)
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Summary:In general, the DC load is electrically sensitive to the input voltage and current compared to the AC load. As the demand for digital systems that require DC power increases rapidly, the importance of stable DC power supply methods is increasing. Various elements such as renewable energy and load are configured in the power grid that supplies DC, and they are connected in various forms and power patterns. These elements have different starting and operating characteristics, which can be disadvantageous to the design of controllers for power converters to maintain a stable bus voltage in the DC power grid. Therefore, in a DC power system, an energy storage system with active bi-directional power control technology that can minimize transient conditions, such as overshoot, which can occur when a load is connected or power accelerates rapidly, is significantly important. This paper proposes a novel power control method capable of compensating for the instability of the DC bus voltage owing to the transient state in the DC power supply system. This method minimizes overshoot and ensures fast responsiveness and system stability by calculating the flux linkage of an inductor in a bi-directional DC/DC converter and applying an excitation voltage without pulse-width modulation (PWM) switching. The performance and validity of the proposed transient high-speed controller (THSC) were verified through simulations and experiments.
ISSN:0278-0046
1557-9948
DOI:10.1109/TIE.2023.3277086