对于BUCK推演的拓扑架构,电感位于输出端,因此控制对象与应用关注的对象一致。 对于Boost或者BUCK-BOOST架构的变化器电感并不位于输出端,因此控制的对象与实际应用关注的对象并不相同。 对于PFC的应用,需要控制的电流恰好是输入电流,因此BOOST拓扑的变换器更为适合。 平均电流控制(ACMC)简介 与PCMC的控制不同的是,ACMC...
平均电流模式控制(ACMC)是开关电源设计中一种常用的控制方式,它通过调整电感平均电流的方式实现电路的恒定输出。相对于峰值电流模式控制,它保留了动态响应快的特点,同时也解决了容易受干扰的问题。 本系列分为两个部分。 第一部分从平均电流模式的基本原理出发,通过控
This paper proposes a technique to track and regulate the "true average" current in any branch of a pulse-width modulated dc-dc power converter. An example buck converter in continuous-conduction mode is considered. A comprehensive characterization is presented for the proposed scheme. An overall ...
FerŃandez, “Average-current-mode control of two-input buck post-regulators used in power-factor correctors,” IEEE Trans. on Industrial Electronics, Vol. 6, pp. 569-576, 1999. :J. Sebastian,P. J. Villegas,M. Hernando,F. Nuno,F. F-Linera(1999).Average-current-mode control of two-...
such as buck, boost, buck-boost, and flyback converters in operating continuous-conduction mode (...
Average-input current-mode control (AICMC) is a new control scheme for shaping the input current of a buck converter in a high-power-factor rectifier. AICMC is presented along with a continuous-time model that includes sampled-data effects. AICMC is found to be analogous to current mode co...
DC-DC power convertorselectric current controltransfer functionsaverage-current-mode-controlled DC-DC convertersaveraged-current- mode-controlled buck converter... S Katchamat - IEEE International Conference on Power Electronics & Ecce Asia 被引量: 0发表: 1978年 Fundamental limits on energy transfer and...
This paper presents a duty cycle generator for an average model of buck converter with current-mode control, which can simultaneously deal with both the continuous conduction mode (CCM) and the discontinuous conduction mode (DCM). First, a duty cycle generator is mathematically derived, considering...
Conventional peak current mode control actually controls inductor current. As normally used for output current control, it is most effective when applied to a buck regulator where the inductor is in the output. But for flyback or boost topologies the inductor is not in the output, the wrong ...
Robust ACC of DC-DC buck-derived converters. Study of the loop tuning with H-infinity control techniques and analysis by means of robust parametric control... This Ph.D. Thesis presents a novel Average Current Mode Control (ACC) strategy for the control of PWM DC-DC converters, which repres...