Voltage-Based Charge Balance Controller Suitable for Both Digital and Analog Implementations

Jia, Liang; Liu, Yanfei

doi:10.1109/tpel.2012.2203340

Cited by 27 publications

(21 citation statements)

References 25 publications

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“…Additionally, since the controller is based solely on the small signal response of the converter, it cannot possibly guarantee optimal large signal dynamic performance. Therefore, the charge balance control (CBC) is proposed to achieve the best possible dynamic response [38]. The waveforms of buck converter under steady-state are shown in Figure 10, during a sampling time (T s ), can obtain:…”

Section: Torque Impulse Balance Controlmentioning

confidence: 99%

A Torque Impulse Balance Control for Multi-Tooth Fault Tolerant Switched-Flux Machines under Open-Circuit Fault

Wang

Hao

2018

Energies

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The multi-tooth fault tolerant switched-flux machines (MTFTSFM) providing both excellent fault tolerant capability and relatively high torque density are good choices for high reliability applications. A rapid control of the electromagnetic torque under open-circuit fault can always be achieved by the direct torque control with voltage vector reconstruction (RDTC); however, with respect to the rotor speed, its dynamic performance is still impacted by the proportion-integration (PI) parameters. Therefore, a torque impulse balance control (TIBC) is investigated in this paper for the MTFTSFM under open-circuit fault to obtain excellent dynamic performance of the rotor speed. During the dynamic state, the electromagnetic torque and the speed can converge at the same time after only one adjustment of the speed by using the optimized voltage vector sequence based on torque impulse balance, thus, achieving the best possible dynamic process for the speed. The TIBC method is carried out on an MTFTSPM machine system, and the correctness and effectiveness are verified.

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Section: Torque Impulse Balance Controlmentioning

confidence: 99%

A Torque Impulse Balance Control for Multi-Tooth Fault Tolerant Switched-Flux Machines under Open-Circuit Fault

Wang

Hao

2018

Energies

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“…Among the dual‐mode controls, charge balance control (CBC) is one of the most prominent strategies that is widely implemented. It allows the converter to temporarily maximize slew rate of the inductor current through nonlinear control loop and then switch back to the compensator loop at steady state …”

Section: Introductionmentioning

confidence: 99%

“…In previous literatures, there are two ways to realize CBC. One is the analog‐based circuit; the other is the digital‐based circuit . The analog CBC can instantly respond to the voltage variation without restriction from clock sampling speed.…”

Section: Introductionmentioning

confidence: 99%

Auto‐tuning charge balance control for improving transient response on buck converter

Liu

Chen

Chang-Chien

2020

Circuit Theory & Apps

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Load transient and dynamic voltage scaling (DVS) are commonly seen in the operation of the system processor. These two functions usually encounter large output voltage transient, which is hard to be quickly settled. Charge balance control is one of the prior choices that enables the converter to operate at its optimal charge/discharge slew rate so as to achieve fast transient response.The effectiveness of the optimal performance generally requires precise knowledge of the circuit parameters for charge balance computation. However, parameter drifting due to the manufacturing process may affect the performance, which is hard to implement a power integrated circuit (IC) for wide range applications. Different from the original approaches, this paper proposes an auto-tuning charge balance control (AT-CBC) to optimize load transient response and DVS of the buck converter. The auto-tuning mechanism can save the preknowledge of the output filter and avoid complex calculation in digital control. The function of AT-CBC is validated by a field-programmable gate array (FPGA) controlled buck converter. Experimental result shows that the output voltage can be settled within 3 μs for the 750-mA load step transient. For the 0.3-V DVS transient, the output voltage can be settled within 4 μs. K E Y W O R D Sauto-tuning, charge balance control (CBC), dynamic voltage scaling (DVS), digital control, DC-DC converter

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“…These controls adopt variable switching-on and switching-off durations to balance the charge on output capacitor, and achieve optimal output voltage transient response. Furthermore, various methods are proposed to carry out the control with digital circuits [23][24][25][26]. However, these control strategies induce a variable switching frequency, which challenges the converter modeling and EMI suppression [27,28].…”

Section: Introductionmentioning

confidence: 99%

Linearized Discrete Charge Balance Control with Simplified Algorithm for DCM Buck Converter

et al. 2019

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In this paper, a linearized discrete charge balance (LDCB) control strategy is proposed for buck converter operating in discontinuous conduction mode (DCM). For DC-DC power converters, discrete charge balance (DCB) control is an attractive approach to improve the output voltage transient response. However, as a non-linear control strategy, the algorithm is complex, which is difficult for implementation. To reduce the complexity, this paper proposes the LDCB control strategy that is derived through linearizing conventional DCB controller. By deriving the differential functions of the DCB control algorithm, the small signal relationship between the input and output of DCB controller is explored. Furthermore, based on the relationship, the LDCB controller is formed through three parallel feed loops to the duty ratio. As a linear control approach, the achieved LDCB controller is greatly simplified for implementation. This not only saves the hardware cost, but also reduces the calculation lag, which provides potential to improve the switching frequency. Besides, since the LDCB controller shares the same small signal model as that of DCB controller, it achieves similar control loop bandwidth and transient performance. Effectiveness of the proposed LDCB control is verified by zero/pole plots, transient analyses and experimental results.

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Voltage-Based Charge Balance Controller Suitable for Both Digital and Analog Implementations

Cited by 27 publications

References 25 publications

A Torque Impulse Balance Control for Multi-Tooth Fault Tolerant Switched-Flux Machines under Open-Circuit Fault

A Torque Impulse Balance Control for Multi-Tooth Fault Tolerant Switched-Flux Machines under Open-Circuit Fault

Auto‐tuning charge balance control for improving transient response on buck converter

Linearized Discrete Charge Balance Control with Simplified Algorithm for DCM Buck Converter

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