| 摘要 |
The invention discloses a green power converter which omits the pulse width modulation (PWM) technique in the traditional power converter, does not have high-frequency power device, does not generate EMI interference, simultaneously adopts the symmetry basic primitive (SBP) technique, the amplitude high modulate (AHM) technique and the dynamic rectification (DR) technique, and only needs to perform traditional power conversion on a small part of the input power so as to acquire the whole output power, namely that a large part of the output power neither need traditional power conversion nor need to pass through a magnetic core transformer. The input AC voltage neither needs to be rectified and filtered nor has large inductance and large capacitance, thus the power factor is 1, and the total harmonic distortion (THD) is 0. A transformer secondary side adopts dynamic rectification, can acquire a DC circuit, and can also acquire an AC voltage. The circuit complexity, the power consumption and the failure rate of the whole green power converter are greatly lowered, and the power converter can be applied in all the fields to replace the traditional power converter. |
| 主权项 |
1. A power converter, comprising:
a first basic circuit comprising a first unit circuit with a first end point A and a second end point B, wherein the first end point A of the first unit circuit is connected with the fire wire of an input voltage (Vin), and a first resistor or capacitor element is connected between the zero wire of the input voltage and the second end point B of the first unit circuit, wherein the first resistor or capacitor element comprises a first resistor or a first step-up capacitor network and step-down capacitor network; a second basic circuit comprising a second unit circuit with a first end point A and a second end point B, and a first transformer with a primary side and a secondary side, wherein the first end point A of the second unit circuit is connected with the primary side of the first transformer, and the second end point B of the second unit circuit is connected to the negative electrode or zero wire of the input voltage; a third basic circuit comprising a third unit circuit with a first end point A and a second end point B, and a second transformer with a primary side and a secondary side, wherein the first end point A of the third unit circuit is connected with the primary side of the second transformer, and a second resistor or capacitor element is connected between the zero wire of the input voltage and the second end point B of the third unit circuit, wherein the second resistor or capacitor element comprises a second resistor or a second step-up capacitor network and step-down capacitor network; wherein the secondary sides of the first and second transformers are connected to corresponding dynamic rectification circuits; further wherein the first unit circuit, second unit circuit, and third unit circuit each comprise one of the following two forms: a first form comprising a first and a second field effect tube, and a first and second diode, wherein the unit circuit end point A is formed by connection of the positive electrode of the first diode with the negative electrode of the second diode, and the unit circuit endpoint B is formed by the source electrode of the second field-effect tube, further wherein the drain electrode of the first field effect tube is connected with the negative electrode of the first diode, the source electrode of the first field effect tube is connected to the unit circuit end point B, the drain electrode of the second field effect tube is connected with the positive electrode of the second diode, the source electrode of the second field effect tube is connected to the unit circuit end point B, the grid electrode of the first field effect tube is connected to the positive electrode of a first driving voltage, the grid electrode of the second field effect tube is connected to the negative electrode of a second driving voltage, and the negative electrode of the first driving voltage and the positive electrode of the second driving voltage are connected to the unit circuit end point B; or a second form comprising a first and a second field tube, wherein the unit circuit end point A is the drain electrode of the first field effect tube, and the unit circuit end point B is the source electrode of the second field effect tube, further wherein the source electrode of the first field effect tube is connected to the drain electrode of the second field effect tube, the grid electrode of the first field effect tube is connected to the grid electrode of the second field effect tube, the grid electrode of the first field effect tube is connected to the positive electrode of a first driving voltage, and the negative electrode of the first driving voltage is connected to the unit circuit end point B; further wherein the first and second driving voltages are generated by a high-frequency driving signal generator (VDrvh) and a synchronous driving signal generator (VDrvs); wherein the high-frequency driving signal generator (VDrvh) comprises an integrated circuit NE555 and a signal conversion circuit (SPrs), wherein a third and fourth DC power sources (V3, V4) are connected in series, the middle is grounded, the negative electrode of the third DC voltage (V3) is connected with a pin (GND) of NE555 and one end of a first and second capacitors (C1, C2), the positive electrode of the fourth DC voltage (V4) is connected with pins (Vcc, Reset) of NE555 and one end of a seventh resistor (R7), the other end of the first capacitor (C1) is connected with a pin (Thresh) of NE555, the other end of the second capacitor (C2) is connected with a pin (Cntrl) of NE555, the other end of the seventh resistor is connected with a pin (Dis) of NE555, the positive electrode of a first diode (D1) is connected with a pin (Dis) of NE555, the negative electrode is connected with a pin (Trig) of NE555, the second diode (D2) and a sixth resistor (R6) are connected in series, the positive electrode of the second diode (D2) is connected with a pin (Thresh) of NE555, the other end of a sixth diode (D6) is connected with a pin (Dis) of NE555, a pin (Out) of NE555 is connected with an end point (IN) of a signal conversion circuit (SPrs) via a third resistor (R3), and the end point (GND) of the signal conversion circuit (SPrs) is grounded; and wherein the synchronous driving signal generator (VDrvs) comprises an integrated circuit LM339 and a signal conversion circuit (SPrs), a fourth and fifth DC power sources (V4, V5) are connected in series, the middle is grounded, the negative electrode of the fourth DC voltage (V4) is connected with the power pin (−) of LM339, the positive electrode of the fifth DC voltage (V5) is connected with the power pin (+) of LM339 and one end of an eighth resistor (R8), the other end of the eighth resistor (R8) is connected with an output end point (Gc) of LM339, the negative electrode of the third power source (V3) and one end of the sixth resistor (R6) are grounded, the other end of the sixth resistor (R6) is connected with the same-phase input pin (+) of LM339, the positive electrode of the third power source (V3) is connected with the same-phase input pin (+) of LM339 via a seventh resistor (R7), the opposite-phase input pin (−) of MP339 is grounded, the output end point (Gc) of LM339 is connected with the end point (IN) of the signal conversion circuit (SPrs) via the third resistor (R3), and the end point (GND) of the signal conversion circuit (SPrs) is grounded; further wherein the signal conversion circuit (SPrs) comprises first and second optical couplers (U1, U2), wherein the cathode of the diode part of the first optical coupler (U1) is connected with an input end point (IN), the anode is connected with an end point (GND), the emitting electrode of the triode part of the first optical coupler (U1) is connected with the negative electrode of the second power source (V2) via a first resistor and is also connected with the collecting electrode of a second triode (Q2), the collecting electrode of the triode part of the first optical coupler (U1) is connected with the positive electrode of the first power source (V1) and is also connected with the collecting electrode of a first triode (Q1), and the emitting electrodes of the first and second triodes (Q1, Q2) are connected together to form an output end point (Gb) and are also connected with the end point (GND) via a second resistor (R2); and the anode of the diode part of the second optical coupler (U2) is connected with the input end point (IN), the cathode is connected with the end point (GND), the emitting electrode of the triode part of the second optical coupler (U2) is connected with the negative electrode of the second power source (V2) via a fourth resistor and is also connected with the collecting electrode of a fourth triode (Q4), the collecting electrode of the triode part of the second optical coupler (U2) is connected with the positive electrode of the first power source and is also connected with the collecting electrode of the third triode (Q3), and the emitting electrodes of the third and fourth triodes (Q3, Q4) are connected together to form an output end point (Ga) and are also connected with the end point (GND) via a fifth resistor (R5). |
