the desired output voltage. cell phone jammer has the intelligence controlling technology

Transformation with the matrix power theory has become more sophisticated, matrix inverter is generally considered to be a flexible power converter. mature, matrix inverter is generally considered to be a flexible power converter (1) the advantages of advantages; the advantages of the output voltage amplitude and frequency of a wide range of continuously adjustable, four-quadrant operation of high power output voltage wide range of amplitude and frequency is continuously adjustable, four-quadrant operation; The built-in battery of mobile phone jammer is 1500mAh. High Power Factor, Factor run, the use of certain control algorithm enables the matrix inverter sinusoidal input current is continuously adjustable without affecting the displacement between the positive load angle Maximum output voltage changes in flow displacement in the positive load angle continuously adjustable without the maximum output voltage changes ahead of the power factor can be used for reactive power compensation, electromagnetic compatibility, simple structure, advanced power factor can be used for reactive power compensation electromagnetic compatibility, simple structure, without intermediate filtering. easy integration intermediate filtering. easy to integrate the design of the input filter; safe commutation strategy, control algorithms, overvoltage protection, input filter design; safe commutation strategy control algorithm, overvoltage protection, modularity, etc. The problem is a hot topic of current research. modular realization of such issues as the current research focus.The energy consumption of cell phone jammer is 0.5W/h. (2) typical topology and working principle of the typical topology of the works: three-phase matrix inverter typical topology and internally without any passive components is equivalent to Figure 3 M converter, the converter internally without any passive components, the practical significance of the generally refers to three three-phase converter. phase - three-phase converter. typical topology and the equivalent Figure the typical topology of three-phase converter, broken down by number of output phase and the equivalent diagram shown in Figure 8-4, can constitute a three-phase - single principle can constitute a three-phase phase converter phase converter basic works by waveform high frequency synthesis principle and the basic operating principle is the waveform high frequency synthesis principle that the use of different control algorithms can strike a bidirectional controllable switch duty cycle of each switching cycle, thereby seeking to strike each bidirectional controllable switch duty cycle of the switching cycle, The package size of cell phone jammer is 19cm*13cm*5cm.the length of the cycle of the switch conduction time in the cycle of the switch conduction length of time, will switch the order of the sinusoidal input / line voltage of the fragment is passed to the output side, the fragments of the sinusoidal input line voltage is passed to the output side of the fragments to pass the input line voltage at the output side of the fragment sequences to a fragment of the output side voltage sequence voltage in each switching cycle the average of the output voltage fragment in line with the desired output voltage transient transformation law. value of the instantaneous transformation law of the desired output voltage. cell phone jammer has the intelligence controlling technology.  can change the output voltage by regulating the size of the modulation amplitude, and complete two-way controlled by commutation strategy can open can change the amplitude of the output voltage, off the security between the input voltage commutation or commutation between the input voltage of the off the safety commutation or commutation (3) bidirectional controllable switch controlled two-way switch in Figure 8-5 two-way control switch (4) control algorithm of the control algorithm: the control algorithm indirect transform method: indirect transform method: find the matrix converter control algorithm is sometimes necessary to artificially matrix converter is equivalent to a virtual cross - cross structure orthogonal structure matrix converter efficiency into a virtual structure, called the indirect transformation method of matrix converter, it follows that the dual space vector algorithm, rectifier chopper inverter algorithm.