Ekkachai Mujjalinvimut

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An ultrasonic motor (USM) has been widely used in a great variety of applications since it exhibits several advantages over the conventional electromagnetic motor such as high torque at low speeds, light weight, quiet operation, no electromagnetic interference (EMI), and high holding torque without supply. In this paper, the basic principle of USM drive is(More)
This paper presents the method to estimate load value and output voltage of the inductive power transfer (IPT) system with series-parallel (SP) compensation topology. This technique uses primary side measured variables without the need of secondary side measurement and communication devices between the circuits. In addition, the magnitude of the output(More)
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