TWM241881U - Improved structure for DC-to-AC converter - Google Patents

Description

M241881

V. Creation Description (1) [Creation Overview This creation is about a DC-to-AC converter including an improved structure of a transformer, an energy storage inductor, and an ice =), a waveform generator, a control drive circuit, and f, the modulator (PWM), the switch circuit is a bridge switch circuit, and the switch circuit group is terminated to the positive terminal of the DC input terminal, the positive and negative terminal of the switch circuit, and one of the bridge AC terminals Connect one end of the input side of two DC input voltage transformers, and then connect the transformer input inductance to the other-AC terminal of the transformer, and then connect the bridge circuit to the bridge shape, and then connect to the bridge shape. The feedback terminal of the PWM, and the terminal again, respectively detect the wave to generate a half-cycle sine wave to provide the pulse width ^, the shape generator potential terminal, and the waveform generator generates a reference control circuit called the PWM output and the The square wave transports 2 Z) square waves for control signals. In this way, can only the transformer required for a straight Λ bridge circuit be converted into an AC output? ：：：： Switch circuit and-only through a group of switch circuits and a transformer ^ 2 DC power of the power supply can simplify the circuit junction, and can be upgraded to AC output, [prior technology] Soichi & $ 知 ，: ^ DC To AC converter circuit, please refer to Figure 1, ancient: main, voltage circuit (1Q,), bridge rectifier circuit (2G,), chirp capacitor (C2), two pulses, Umiya Wei U m wave visibility modulator (PWM-1, PWM-2), bridge switch circuit (1 0) and control though; know + _ / private? It consists of industrial driving circuit (40). The booster circuit (10) is a push-pull composed of a switch body (Q1, Q2) and a transformer (π).

Page 5 M241881 V. Creative Instructions (2) The boost circuit (10,) of the formula (PUSH-PULL), the positive input of the DC input is transformed from (T1) to the tap input through the switching transistor (q 1. q 2) Return to the negative terminal of the DC input. The DC input is boosted by the transformer (T1) and the switching transistor (q1, Q2) under the control of the pulse width modulator (p · "). The transformer (T1) once knows the high-voltage output. The high-voltage output is rectified by a bridge rectifier circuit (20,) composed of four rectifier diodes (D, D4), and then filtered by a filter capacitor (C2). A stable high-voltage direct current is obtained, and the high-voltage direct current is connected to a bridge switching circuit (10) composed of four switching transistors (Q3 ~ Q6), and a low frequency is generated by a pulse width modulator (PWM-2). The pulse width modulation waveform (50Hz, 46Hz) is controlled to drive an AC circuit to generate an AC output. However, because the pulse width modulator (PWM- 丨, PWM-2) operates at low frequency, it can only The voltage of the AC output cannot be controlled because the waveform of the AC output cannot be controlled. Therefore, ^ Input ^ is an approximate sine wave (M〇difi) as shown in the second figure. ed sine wavf) instead of a pure sine wave, please refer to Figure 2. Secondly, please refer to another DC-to-AC conversion cryogenic system shown in Figure 3: the above application adds an energy storage inductor U, and adds a waveform generator (30) to the control drive circuit (40) to generate low Straightened sine wave = Π pulse width modulation, PWM (PWM_2) for comparison. The pulse width modulator is switched from the control drive circuit (40) to the signal required by the electric body (Q3 ~ Q6). After the control drive circuit (4 movements, the bridge is composed of four switching transistors (Q3 ~ Q6)). Type switching circuit (10), so that =! = Frequency ^ change of the switch operation 'its turn out and then can reach a low distortion sine wave input m, armband is approximately sine wave (MQdlfled sine wave) M241881 V. Creation instructions (3) • Pure sine wave output, all of which need to pass DC through a transformer-secondary switching circuit (composed of switching transistors (Q1, Q2)) ^ boost circuit (10,) ) And (bridge switch circuit (1 0) composed of four switching transistors (Q3 ~ Q6)), and a set of rectifier filter circuits (bridge rectifier circuit composed of rectified diode sweat (D1 ~ D4) ( 20,) and filter capacitor (C2,)), and this part requires the use of high-power parts, the stress is large, it is easy to be early, and the circuit requires many parts, making the cost high. The output terminal of the known technology consists of a four-switch transistor (Q3 ~ Q6) group of switching circuits (10). In the case of output, excessive load or short circuit, it is easy to cause the four-switch transistor (Q3 Q6) to produce power between i and burn it, which makes the protection circuit difficult to overcome, the disadvantage of high reliability and poor reliability. Improving technology and application methods] Circuit = box Irrespective of the know-how DC-to-AC converters lack their personal expertise 4 ', they need to be improved. They are thinking and improving creative ideas. After the improvement, they are finally designed Explore and test the good structure after countless tests, and == generate the original DC-to-AC converter circuit after the integration and then connect the two AC terminals of the switch circuit to detect the waveforms respectively. At the end of the control, the control part is provided by (pWM) ... Kao Lei / \ period sine wave to provide the pulse width modulator 60Hz square wave to make the waveform generator generate another low frequency (50Hz or output With the square turbidity ... control the circuit, and the pulse width modulator (PWM) 'will provide the control required by the switching circuit. M241881 V. Creation instructions (4) This method can convert the DC power of the DC power supply. It can be converted into AC power output only through a set of switching transformers, which can simplify the circuit structure, & increase reliability and save costs. [Creation purpose] Conversion = Yes, the main purpose of this creation @, which aims to provide-a kind of DC The improved structure of the second AC output and the second AC output is through the two AC terminals of the switch circuit, which are separately checked and approved and then connected to the feedback terminal of the pulse width modulator (PWM). A half-cycle sine wave is provided to the pulse wave, and the reference potential terminal of the degree modulator (PWM) enables the waveform generator to generate another low-frequency (50Hz or 60Hz) square wave to supply the control circuit, and the pulse width modulator The output of (PWM) and the result of the square wave operation provide the control signals required by the switching circuit. In this way, the direct current of the direct current power supply can only be used as a switching circuit, and a transformer can be converted into an alternating current output, which can simplify the circuit structure, improve reliability and save costs. [Embodiment] The dagger purpose and detailed etiquette of this creation make it clearer, and at the same time, see == will be further revealed by the following detailed technical content: Make the first of this creation 'see the first As shown in the four figures, the improved structure of the converter includes: Kai 2 creates a DC to AC pulse width modulator (PWM), an integrating circuit (^ T1) (30), and a control drive circuit (40). / > produces as

M241881

V. Creation description (5) The switching circuit (10) is a bridge switching circuit connected by four switching transistors (Q1 ~ Q4), and the bridge switching transistor (QhQ4) is a Ling dagger The semiconductor field effect transistor (CMOS-FET) is connected to DC power at one end, and an AC end is connected in series to the energy storage inductor, and then to one end of the input side of the transformer (T1); < The transformer (T1) The other end of the input side is connected to the other AC end of the switching circuit 丄 〇, and the two AC ends of the switching circuit (10) are respectively connected to the diodes (Dl, D2), and one of the integrating circuits (2 0), which is composed of resistors and capacitors, or a low-pass wave filter (L0w Pass Filter) composed of a trans-amplifier, whose input terminals are connected to diodes (D1, D2), and output terminals Then connected to the feedback terminal of the pulse width modulator (PWM); 'a pulse width modulator (PWM), the reference potential terminal of which is connected to the waveform generator (30), to input the waveform generator (30 ) (See Figure 5); the feedback terminal is connected to the output terminal of the integration circuit (20), The pulse width of the output is adjusted according to the comparison result of the two waveforms; a waveform generator (30) is made by an oscillating circuit or a single-chip single-chip micro-processor (Single Function Micro-Processor) with simple functions to generate A half-cycle sine wave (see Figure 5), and two low-frequency (50Hz or 60 Hz) square waves with the same frequency and opposite phases (as shown in Figures 6 and 7) to supply the control drive circuit (40) The two low-frequency square waves can only generate one of them by the waveform generator (30), and the other by the NOT GATE; a control drive circuit (40)

Used to convert the pulse width modulator (PWM)

M241881 V. The output of the creative instructions (6) and the low-frequency square wave operation generated by the waveform generator (30), to provide the -switch circuit (1 0) as the required control signal. a Generate low-distortion sine wave (F1) (see Figure 5) and two low-frequency (50Hz or 60Hz) square waves (F3) and (F4) by the waveform generator (30). Figure 6 7 shows that the two square waves have opposite phases. The sine wave is connected to the pulse modulator PWM as a reference voltage, and it is also connected to the voltage detected by the AC terminal diode (Dl, D2) of the bridge switch circuit. An integration circuit (2) is used to filter the high frequency and retain the low frequency to obtain the full wave waveform (F7) (please refer to Table 8 = for comparison of the PWM of the pulse width modulator, the PWM of the pulse width modulator will be determined according to the reference I \ Detect the height of the voltage and adjust the pulse width (F2) of the output (refer to Figure 9). The pulse wave is then combined with the low circuit (40) generated by the waveform generator (30) to make it Generate two waveform waveforms of simultaneous = degree and low-frequency square wave. These two signals-are used to control the switching transistor waveform (F5) during the positive half cycle of a sine wave (please refer to No. 10 圄, black. Χ ^ ^ Turn-on switching transistor (ί) ::: = used to control ^ τ ^ Q3 during the negative half cycle of the sine wave (F6) (please refer to figure 丨). Tian sine wave borrows the switch during the positive half cycle Transistor Body (Q1, Q4) ΟΝ / OFF switching, the same frequency of the electrician Jiang 6 ancient and six τ mountain natives will be straight forward 'Xie Zhengzhi input through the switch transistor office 01, the energy-saving inductor L1 reaches the transformer cry At T1, A1 uses the radio and television sun-body Q1, and stores the A terminal of the π θ day, and the B terminal of transformer D1 passes through the Wenguan crystal to return to the negative terminal of the DC input, and here 0Ν / 0 =; ί: month & Inductor dl will be switched transistor main = to switch transistor Ql, Q4 〇FF 拄 i At At γ / sincere 4 hurt this 伤 'sine wave will be released at tB Shi Temple and then release Moon Dagger 1 to Transformer T}. When the sine wave is in the negative + period, 'switched by the switching transistor Q2 0N / 0FF, the current will be input from the same frequency of ^ through the switching transistor (Q2) M241881 5. Creation instructions (7) —___ = TkB terminal of transformer, A terminal of transformer returns to the negative terminal of DC input through storage tank, where 〇N / 〇Ff = 3: to the switching transistor (Q2, Q3), and then release the energy releaser: change = at During the operation of the switching circuit (10), the amount of energy storage Thunderbolt I depends on the PWM to modify the positive pulse / energy storage pulse width in accordance with the output voltage change, because the energy storage inductor L1 has the energy storage generation :: Off U0) operation causes the output voltage to change from the peak value to the maximum value and then back to zero, and the high-frequency current of the switching circuit (1G) is processed by the energy storage inductor due to the machine type from zero L1. Make transformer T1 only low 丨 :: The effect can be obtained after the T1 turns ratio is boosted. The transformer does not require other components to filter high-frequency current. Sine wave AC output, as described on the wire, this creation Indeed, it can only be a preferred embodiment of this creation, '^, but the above-mentioned effects of the patent application scope of this creation are largely within the scope of this creation patent. = Wait for officialization and modification, both should still be clear according to the legal statute of the patent. "Interpretation" is to solve the new question by the old method. The first statement is to create, and the administrative court solution should also be an unprecedented innovation. The old problemers, in principle, are not the means used by unprecedented new patents. They are new and can produce a new role. New, but their spatial form is created to meet the requirements of new patents. At that time, it should be acknowledged that a new patent application was filed in accordance with the law. Page 11 M241881

The diagram is a brief description of the diagram. The first diagram is a circuit diagram of a conventional DC-to-AC converter. The second diagram is an approximate sine wave waveform generated by a conventional DC-to-AC converter. The third diagram is another conventional one. The circuit diagram of the DC-to-AC converter The fourth diagram is the circuit diagram of the DC-to-AC converter created by this creation = f diagram is the sine wave waveform diagram generated by this creative waveform generator ^ /, and seven diagrams are produced by the creative waveform generator The low-frequency square wave pattern is the full wave waveform output of the integrator circuit of this creation. The ninth image is the waveform image output of the pulse width modulator of this creation. = Eleven 圏 is the sine cycle waveform diagram of the control drive circuit synthesized by this creation 々 ~ melon% / skin negative + simple description of the part number 1010, 2020, 30 40 C1 component table switch circuit boost circuit integration circuit rectifier circuit waveform generation Capacitor drive circuit C3 capacitor

M241881 on page 12 Schematic description of C2 'filter capacitors Dl-D6 Diode L1 inductor PWM pulse width modulator PWM-1 pulse width modulator-1 PWM-2 pulse width modulator-2 Ql-Q6 Transistor T1 _

Page 13

Claims (1)

M241881 1 · A modified structure of a DC-to-AC converter-a switching circuit, the switching circuit is bridged to a DC power source, and an AC terminal is connected in series to one end of the transformer input side; 'series includes: The energy-saving inductor is connected to the other side of the input side, and the terminal is connected to 1 _ ^ _. The parent w terminal is connected to the two-wire terminal of the m-circuit. The other end of the m-circuit is connected to the diode. The diode is output to the feedback terminal of the pulse width modulator. A pulse width modulator is connected. The reference potential terminal is connected to the waveform generator to input the sine wave of the waveform generator. The generator is used to generate a half-cycle sine wave and produce a low-frequency square wave to supply a control drive circuit; a control drive circuit is used to calculate the output of the pulse width modulator and the low-frequency square wave generated by the waveform generator, To provide the switching circuit as the required control signal. ^ 2 · The DC-to-AC converter circuit described in item 1 of the patent application < improved structure, wherein the bridge switch circuit is connected by four metal oxide I conductor field effect transistors (MOS-FETs) to make. 3. The improved structure of the DC-to-AC converter circuit according to item 1 of the application scope, wherein the integration circuit is a filter circuit. 4. The improved structure of the DC-to-AC converter circuit according to item 3 of the application scope, wherein the filter circuit is a resistor filter circuit. 5. The improved structure of the DC-to-AC converter circuit according to item 1 of the application scope, wherein the waveform generator includes a vibration surplus circuit. M241881 VI. Scope of patent application 6 _Improved structure of DC-to-AC converter circuit as described in item 1 of the application scope, wherein the waveform generator includes a single-chip processor. 7. The improved structure of the DC-to-AC converter circuit according to item 1 of the application scope, wherein the low-frequency square wave is a low-frequency square wave with two opposite phases. 8. The improved structure of the DC-to-AC converter circuit according to item 7 of the application scope, wherein the two low-frequency square waves with opposite phases are generated by a waveform generator. 9. The improved structure of the DC-to-AC converter circuit as described in item 7 of the application scope, wherein the two low-frequency square waves with opposite phases are generated by a waveform generator and a reverse brake. Page 15