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Digital Active EMI Filtering (DAEF) technique is a new direction of conductive EMI suppression technologies for switched-mode power converters. However, the conventional DAEF topology only suppresses EMI to ground on the AC (or DC) ports. It doesn't definitely aim to Common Mode (CM) or Differential Mode (DM) EMI. In this paper, a novel DAEF topology is proposed. It can flexibly suppress CM and DM...
In Rapid Cycling Synchrotron, very high tracking precision and stability is required for the magnet power supply, while the load is high order resonant network and the parameters of resonant network vary to some extent. In this paper, a three loop digital controller is studied for this application. The inner loop is the filter inductor current feedback, which aims to realize the current sharing between...
In Rapid Cycling Synchrotron, very high tracking precision is required for the magnets power supply, while the load is high order resonant network. In this paper, a digital PID controller combined with repetitive control algorithm is studied for such an application. Feedforward scheme is also adopted to reduce the tracking error under the periodical reference. A digital controller based on DSP is...
In this paper, a novel digital control solution for isolated DC/DC converters is presented, which induces little additional delay time to the control loop and is easy to implement synchronous rectification (SR) on the secondary side as well. In this digital solution, the compensator (PI regulator) set on the secondary side facilitates the SR implementation, and the digital duty cycle command is transmitted...
This paper describes a novel digital control solution for isolated DC-DC converter. Compared with non-isolated DC-DC converters, isolated ones need to realize isolation of control between primary and secondary side. In this paper, the whole digital control system is implemented using two FPGAs. The one on the secondary side includes a compensator (PI regulator), a high resolution digital PWM (DPWM),...
The hybrid IPEMs (integrated power electronic modules) for front-end converter in distributed power system are described in this paper. Three individual modules, including PFC module, DC/DC module and DSP control board module, were developed to constitute the IPEMs. The conventional wirebond, and spring stress contact technology for control and sensing signals, are employed in module fabrication process...
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