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A current-fed DC-DC converter with zero-current switching (ZCS) is presented in this paper. The front stage, which is a DC-DC buck converter, is used to regulate the output voltage by utilizing pulse-width modulation. The rear stage, which is a push-pull DC-DC converter by using the current-fed technique, is used to transfer energy from low voltage side to high voltage side for high voltage applications...
In recent years, digitization of all control parts in switching power supplies including PWM generators is progressing for demands such as intelligent performances and common use of hardware, etc. Then, a problem is in the resolution of digital PWM generators for improving control performances. Since the digital PWM generator is constituted using a counter, a carrier wave turns into a stairs wave,...
Direct torque control (DTC) technique is used for induction motor (IM) control. Due to the high switching frequency, nonpulse width modulation (NPWM) techniques are frequently preferred. Four different switching algorithms using hysteresis and nonhysteresis controllers are proposed and compared. Drive with torque reference, with speed reference in steady-state and dynamic modes are controlled using...
For pt.I see, ibid., vol.4, p.160-165, (2004). In this paper we will discuss the computational aspects of the frequency response power function for open loop and closed loop converter systems. The mathematical aspect of frequency response power has been discussed in detail in first paper of this two-parts paper. One important aspect of frequency response power function is that it can used to predict...
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