Common-Mode Noise Suppression in Switched-Mode Power Supply Boards Using Segmentation Method

EMC’04/Sendai COMMON-MODE NOISE REDUCTION TECHNIQUES FOR SWITCHED-MODE POWER CONVERTERS

In various kinds of switched-mode power converters, conducted noise due to switching operation frequently causes interference with other electronic equipment. This paper focuses on the common-mode conducted noise generated in switched-mode power converters and presents three examples of noise reduction techniques. First, the common-mode conducted noise is reduced in a common-source type active-...

Switched-Mode Power Converters

A new modeling approach for the spectral analysis of pulsewidth modulated (PWM) converters with independent inputs is developed. The key of this approach is to extend the Volterra functional series to nonlinear systems with multiple independent inputs. After formulating the state-space equations describing the dynamical behavior of PWM converters, the Volterra transfer function characterizing t...

Scheduling Switch-Mode Power Supply Noise for Real-Time Systems

A Switch-Mode Power Supply (SMPS) is invaluable in its ability to efficiently convert energy, which allows digital logic circuits to operate at the most efficient voltage based upon power and timing parameters, saving power and energy. However, an SMPS introduces noise into the system. Some real-time computing systems contain hardware resources that are rivalrous in nature. These are groups of ...

A NEW METHOD TO REDUCE TORQUE RIPPLE IN SWITCHED RELUCTANCE MOTOR USING FUZZY SLIDING MODE

This paper presents a new control structure to reduce torque ripple in switched reluctance motor. Although SRM possesses many advantages in motor structure, it suers from large torque ripple that causes some problems such as vibration and acoustic noise. In this paper another control loop is added and torque ripple is de ned as an objective function. By using fuzzy sliding mode strategy, the DC...

Transformer Shielding Technique for Common Mode Noise Reduction in Switch Mode Power Supplies