Patent ID: 9391533
Filing Date: 2016-07-12
CPC Classification: H02M

Claim Text:
1. A power transmitting apparatus for digitally controlling voltage and current of alternating current (AC), comprising: an input part, wherein the input part has a filtering protection module and a semiconductor switch module connected to the filtering protection module, the filtering protection module having an input interface for inputting an AC signal from a power source; an output part, wherein the output part has a filtering module and a voltage and current feedback module connected to the filtering module, the voltage and current feedback module having an output interface for outputting the AC signal from the input part, and wherein the filtering module is connected to the semiconductor switch module of input part; and a digital control part, wherein the digital control part has a microcontroller unit (MCU) electrically connected to the filtering protection module, the semiconductor switch module, and the voltage and current feedback module, respectively; wherein the AC signal is sequentially transmitted through an input interface to the filtering protection module for voltage limitation and filtering and to the semiconductor switch module, and a trigger signal is sent from the filtering protection module to the MCU so as to switch the MCU into an operating mode while the filtering protection module outputs the AC signal to the semiconductor switch module; wherein the semiconductor switch module separates an input sinusoidal wave of the AC signal into amplitude-adjustable positive and negative half-wave signals, and the amplitude-adjustable positive and negative half-wave signals are filtered and merged to an output sinusoidal wave of the AC signal, the output sinusoidal wave substantially identical to the input sinusoidal wave; and wherein the voltage and current feedback module receives the output sinusoidal wave as feedback to the MCU so that the MCU is able to control the switching state of the semiconductor switch module, thereby forming a close loop.