40results about How to "Change phase" patented technology

The invention discloses a dynamic tide flow control device based on a wide-range controllable transformer comprising bidirectional power tubes, and the device consists of a controllable transformer, a power unit, a measurement and control module, a cross phase conversion module, a filter capacitor, an input / output voltage transformer, and an output current transformer. The control method of a dynamic tide flow comprises the steps: controlling the on / off of a tapping point at an input side (a primary side) of the wide-range controllable transformer through employing a power electronic switch which can achieve quick switching-on and switching-off; connecting another two windings at a tapping point of each phase of the wide-range controllable transformer in a series manner; adding four groups of bidirectional power tubes too change the switching-on direction of the cross phase conversion module, thereby changing the phase and amplitude of the output voltage of the controllable transformer in the largest range, and achieving the adjustment of active power and reactive power. The method carries out the control of the switching-on of the tapping point of the wide-range controllable transformer, thereby achieving the regulation and control of the dynamic tide flow of a power grid. The device is low in cost, and is high in control reliability of the dynamic tide flow.

The invention discloses a timing control signal generation method of a cold ion quantum information processor. On the upper computer, radio frequency signals and digital signal parameters are set through the upper computer instructions; the upper computer instructions are converted into machine instructions and transmitted to the timing control FPGA; the timing control FPGA Execute machine instructions and output digital signals and radio frequency signals through the conversion module and radio frequency synthesis module. The invention also discloses a timing control signal generating device for a cold ion quantum information processor, including a host computer, a timing control module, a radio frequency synthesis module, and a conversion module. The invention realizes an intuitive description of the timing control signals required for experiments; The compiled host computer instructions can be used repeatedly, avoiding duplication of work, and are convenient for continuous improvement according to experimental results; parameters such as frequency, phase, and amplitude of radio frequency signals can be easily changed; multiple control signals can be precisely controlled to work together; strong scalability .

The invention provides a dynamic power flow control device of a controllable transformer. The dynamic power flow control device is composed of the controllable transformer, a power unit, a measurement and control module, a bypass switch, an input voltage transformer, an output voltage transformer and an output current transformer. The dynamic power flow control method comprises the following steps of: controlling the ON and OFF of a subconnector at an input side (original edge) of the controllable transformer by using a quickly powered-on / off electronic power switch; injecting a duple-frequency signal in a pulse-width modulation signal of the electronic power switch of the controllable transformer by using a DC (Direct Current) signal; and changing the phase position and the amplitude of output voltage of the controllable transformer through changing the amplitude of the DC signal in the pulse-width modulation signal as well as the amplitude and the initial phase position of the duple-frequency signal so as to realize the adjustment of active power and reactive power. In the invention, as the conduction of the subconnector of the controllable transformer is controlled, the dynamic power flow of a power network is adjusted and controlled; and the dynamic power flow control device has the characteristics of low cost and high reliability for the control of dynamic power flow.

The invention provides a base station, an antenna, and a phase shifting device, wherein the phase shifting device includes a fixed dielectric plate, a movable dielectric plate, and a limiting member; the pivoting end of the movable dielectric plate can be pivotally mounted on the fixed dielectric plate, A fixed transmission line is arranged on the fixed medium plate, and the fixed transmission line is extended along the rotation path of the free end of the movable medium plate, and the two ends of the fixed transmission line respectively form signal output ports; at least one surface of the movable medium plate is provided with a movable transmission line, the movable The transmission line is electrically connected to the signal input port on the fixed medium plate; the limiter is arranged parallel to the fixed medium plate along the extension path of the fixed transmission line, so as to jointly define with the fixed transmission line for the free end of the movable medium plate to perform rotational movement Arc-shaped slits for phase shifting. The phase shifting device of the present invention has a compact overall structure, is easy to install, occupies a small space, and has good phase shifting performance, and is especially suitable for 5G Mass i ve MI MO electric tuning antennas.

The invention discloses a power amplifying circuit; the circuit comprises a signal processing circuit, a signal isolating circuit, a signal phase position adjusting circuit, the power amplifying circuit and an inductance-capacitance LC rectifying circuit, wherein the signal processing circuit, the signal isolating circuit, the signal phase position adjusting circuit, the power amplifying circuit and the inductance-capacitance LC rectifying circuit are successively connected. By adopting the circuit disclosed by the invention, through adjusting resistance of resistors of the signal processing circuit, the output of an isolation transformer of the signal isolating circuit can be changed; by adjusting the resistance of the resistors of the signal phase position adjusting circuit, the phase position of an output signal is changed; and thus, the load capacity is improved, and the requirement of long-distance transmission of voltage information is met.