CN201674401U - Circuit realizing passive voltage equalizing when multiple high frequency electronic power devices are connected in series - Google Patents
Circuit realizing passive voltage equalizing when multiple high frequency electronic power devices are connected in series Download PDFInfo
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- CN201674401U CN201674401U CN2010201802312U CN201020180231U CN201674401U CN 201674401 U CN201674401 U CN 201674401U CN 2010201802312 U CN2010201802312 U CN 2010201802312U CN 201020180231 U CN201020180231 U CN 201020180231U CN 201674401 U CN201674401 U CN 201674401U
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Abstract
The utility model discloses a circuit realizing passive voltage equalizing when multiple high frequency electronic power devices are connected in series. Clamp circuits consisting of diodes and capacitors which are connected in series are connected with the two ends of each high frequency electronic power switch in parallel, and an energy feedback circuit consisting of a diode, a capacitor, a high frequency transformer and a voltage multiplying rectifying circuit is also arranged. The circuit utilizes the clamp circuits to realize dynamic voltage clamp and static voltage equalizing, utilizes the energy feedback circuit to feed energy back to a power supply and realizes static voltage equalizing by connecting resistors on all high frequency electronic power switches in parallel. The utility model can realize static voltage equalizing, dynamic voltage clamp and energy feedback when a plurality of high frequency electronic power devices are connected in series. The utility model is instrumental in reducing cost and promoting the development and application of high voltage, high frequency and high power electronic power techniques in industry.
Description
Technical field
The utility model relates to the circuit of realizing passive equalizing when a plurality of high-frequency power electronic devices are connected, belongs to electric and electronic technical field.
Background technology
Under high voltage operation, a device is not enough, often needs several devices to be together in series and bears high voltage.All pressures problem when connecting in order to solve multitube, current practice can reduce four classes.
First kind way: two reverse conducting triode thyristor series connection.For two pipes are all pressed, RC resistance capaciting absorpting circuit in parallel on every pipe.But they can cause sizable loss, and are especially higher at voltage, frequency is higher, di/dt and dv/dt are big and require all to press occasions such as better.This is the simplest way of all pressing, and effect is the poorest.Be operated in device under the high frequency for high-frequency power electronic devices such as IGBT (insulation gate pole bipolar transistor) etc.This way is inappropriate often, because the RC capacitance-resistance can not be definitely noninductive, can only accomplish low sense.This small inductance does not have much influences when low frequency, but appreciable impact is arranged when high frequency.And the loss of resistance capaciting absorpting circuit is bigger during high frequency.Moreover the multitube series connection time often needs to select the close pipe of turn-off characteristic and matches series connection, and this is not difficult to accomplish in manufactory, and just relatively more difficult need change a pipe to user factory the time.
The second class way: clamper power consumption way.Two high-frequency power electronic switch series connection.At every pipe two ends and connect the stable-pressure device of voltage-stabiliser tube etc.Voltage-stabiliser tube carries out clamper, the further rising of deboost when the terminal voltage of high-frequency power electronic switch surpasses the threshold voltage of voltage-stabiliser tube.It is very simple that this way seems, but in fact will form a plurality of independently regulated power electronic circuit more complicated under high voltage, and efficient is also lower.Perhaps also can consume this energy, go in the other clamp circuit, but the energy demand that charges into clamp circuit feeds back to power supply, more complicated and this energy filled into without voltage stabilizing circuit.The energy that some device will charge into clamp circuit consumes with bypass resistance, but this loss is very big under high-frequency work.
The 3rd class way, the drive system of controlling each main switch is to reach dynamic voltage balancing, and it is had relatively high expectations to control, is in mostly at present in the research and development, can't be applicable to more the series connection of random pipe under various conditions of work.
The 4th class way also is present way with the most use: be exactly to adopt complexity such as many level, tandem type and the main circuit of costliness solves.
Summary of the invention
The low-cost circuit of realizing passive equalizing when the purpose of this utility model provides a kind of a plurality of high-frequency power electronic devices series connection.
The technical scheme that its technical problem that solves the utility model adopts is to utilize clamp circuit to solve dynamic voltage balancing and steady-state pressure, utilize the energy back circuit with energy back in power supply.Parallel resistance on each high-frequency power electronic switch realizes static state voltage equipoise simultaneously.Following several technical solution is specifically arranged.
Scheme 1:
When connecting, realize a plurality of high-frequency power electronic devices the circuit of passive equalizing, be attempted by both ends of power after it is characterized in that n high-frequency power electronic switch of connecting and load R connecting, the two ends shunt capacitance C of power supply, load R goes up anti-and diode D, n 〉=2, the clamp circuit that is composed in series by the positive pole of capacitor C 1-1 and diode D1-1 in each high-frequency power electronic switch ends parallel connection, between the capacitor C 1-1 of adjacent clamp circuit and diode D1-1 tie point, insert diode D2-1, and n high-frequency power electronic switch insert diode D5-1 between the negative terminal of the tie point of capacitor C 1-1 in parallel and diode D1-1 and power supply, simultaneously at the series circuit of the two ends of n high-frequency power electronic switch parallel connection by capacitor C 2-1 and high frequency transformer primary coil Lm-1, capacitor C 2-1, high frequency transformer primary coil Lm-1, load R and diode D5-1 have constituted jointly the former limit circuit of energy back circuit, the voltage doubling rectifing circuit in parallel at high frequency transformer secondary coil Lm '-1 two ends, this voltage doubling rectifing circuit is made of the capacitor C 3-1 and the capacitor C 4-1 of diode in series D3-1 and diode D4-1 and series connection, diode in series D3-1 and diode D4-1 and capacitor C 3-1 that connects and capacitor C 4-1 parallel connection, the end of high frequency transformer secondary coil Lm '-1 links to each other with the tie point of capacitor C 4-1 with capacitor C 3-1, the other end of high frequency transformer secondary coil Lm '-1 links to each other with the tie point of diode D4-1 with diode D3-1, constitute the secondary circuit of energy back circuit, the electric charge that charges into capacitor C 1-1 when utilizing the energy back circuit with clamper feeds back in the power supply by high frequency transformer secondary coil Lm '-1 and voltage doubling rectifing circuit and goes, realize dynamic electric voltage clamper and steady-state pressure, ratio=1 of high frequency transformer primary coil and the number of turn of secondary coil: n, at each high-frequency power electronic two ends parallel resistance Rm-1, realize static state voltage equipoise.
Scheme 2:
When connecting, realize a plurality of high-frequency power electronic devices the circuit of passive equalizing, be attempted by both ends of power after it is characterized in that n high-frequency power electronic switch of connecting and load R connecting, the two ends shunt capacitance C of power supply, load R goes up anti-and diode D, n 〉=2, the clamp circuit that is composed in series by the positive pole of capacitor C 1-2 and diode D1-2 in each high-frequency power electronic switch ends parallel connection, between the capacitor C 1-2 of adjacent clamp circuit and diode D1-2 tie point, insert diode D2-2, and n high-frequency power electronic switch insert diode D5-2 between the negative terminal of the tie point of capacitor C 1-2 in parallel and diode D1-2 and power supply, the former limit circuit of the energy back circuit that is composed in series by capacitor C 2-2 and high frequency transformer primary coil Lm-2 in the parallel connection of the two ends of n high-frequency power electronic switch simultaneously, at the series circuit that the two ends parallel connection of n high-frequency power electronic switch of connecting is made up of high frequency transformer secondary coil Lm '-2 and capacitor C 5-2, constitute the secondary circuit of energy back circuit; The electric charge that charges into capacitor C 1-2 when utilizing the energy back circuit with clamper feeds back in the power supply by high frequency transformer secondary coil Lm '-2 and capacitor C 5-2 and goes, realize dynamic electric voltage clamper and steady-state pressure, at each high-frequency power electronic two ends parallel resistance Rm-2, realize static state voltage equipoise.
Scheme 3:
When connecting, realize a plurality of high-frequency power electronic devices the circuit of passive equalizing, be attempted by both ends of power after it is characterized in that n high-frequency power electronic switch of connecting and load R connecting, the two ends shunt capacitance C of power supply, load R goes up anti-and diode D, n 〉=2, the clamp circuit that is composed in series by the positive pole of capacitor C 1-3 and diode D1-3 in each high-frequency power electronic switch ends parallel connection, between the capacitor C 1-3 of adjacent clamp circuit and diode D1-3 tie point, insert diode D2-3, and n high-frequency power electronic switch insert diode D5-3 between the negative terminal of the tie point of capacitor C 1-3 in parallel and diode D1-3 and power supply, the former limit circuit of the energy back circuit that is composed in series by capacitor C 2-3 and high frequency transformer primary coil Lm-3 in the parallel connection of the two ends of n high-frequency power electronic switch simultaneously, in the two ends parallel connection of the high-frequency power electronic switch of remaining n-1 series connection by the series circuit of high frequency transformer secondary coil Lm '-3 and capacitor C 5-3, constitute the secondary circuit of energy back circuit, high frequency transformer secondary coil Lm '-3 and high frequency transformer primary coil Lm-3 are autotransformers, the electric charge that charges into capacitor C 1-3 when utilizing the former limit circuit of energy back circuit and secondary circuit with clamper feeds back in the power supply and goes, and realizes dynamic electric voltage clamper and steady-state pressure; At each high-frequency power electronic two ends parallel resistance Rm-3, realize static state voltage equipoise.
When connecting, realize a plurality of high-frequency power electronic devices the circuit of passive equalizing, be attempted by both ends of power after it is characterized in that n high-frequency power electronic switch of connecting and load R connecting, the two ends shunt capacitance C of power supply, load R goes up anti-and diode D, n 〉=2, the clamp circuit that is composed in series by negative pole and the capacitor C 1-4 of diode D1-4 in each high-frequency power electronic switch ends parallel connection, between the capacitor C 1-4 of adjacent clamp circuit and diode D1-4 tie point, insert diode D2-4, and first high-frequency power electronic switch insert diode D5-4 between the anode of the tie point of capacitor C 1-4 in parallel and diode D1-4 and power supply, the former limit circuit of the energy back circuit that is composed in series by capacitor C 2-4 and high frequency transformer primary coil Lm-4 in the parallel connection of the two ends of first high-frequency power electronic switch simultaneously, insert voltage doubling rectifing circuit at high frequency transformer secondary coil Lm '-4 two ends, this voltage doubling rectifing circuit is made of the capacitor C 3-4 and the capacitor C 4-4 of diode in series D3-4 and diode D4-4 and series connection, diode in series D3-4 and diode D4-4 and capacitor C 3-4 that connects and capacitor C 4-4 parallel connection, the end of high frequency transformer secondary coil Lm '-4 links to each other with the tie point of capacitor C 4-4 with capacitor C 3-4, the other end of high frequency transformer secondary coil Lm '-4 links to each other with the tie point of diode D4-4 with diode D3-4, constitute the secondary circuit of energy back circuit, the electric charge that charges into capacitor C 1-4 when utilizing the former limit circuit of energy back circuit and secondary circuit with clamper feeds back in the power supply and goes, realize dynamic electric voltage clamper and steady-state pressure, at each high-frequency power electronic two ends parallel resistance Rm-4, realize static state voltage equipoise.
In above-mentioned 4 schemes,, n high-frequency power electronic switch that is connected in series and the clamp circuit that is attempted by each high-frequency power electronic switch ends can be encapsulated in the module for reducing the influence of wiring inductance.
Scheme 5
When connecting, realize a plurality of high-frequency power electronic devices the circuit of passive equalizing, it is characterized in that the high-frequency power electronic switch that n is connected in series is divided into two groups of series connection, be attempted by both ends of power behind the serial connection load R between the high-frequency power electronic switch of two groups of series connection, both ends of power shunt capacitance C, load R goes up anti-and diode D, n 〉=2, the clamp circuit that is composed in series by the positive pole of capacitor C 11 and diode D11 each high-frequency power electronic switch ends parallel connection of first group, between the capacitor C 11 of adjacent clamp circuit and diode D11 tie point, insert diode D21, between the tie point of first high-frequency power electronic switch of the tie point of the capacitor C 11 of the clamp circuit of last high-frequency power electronic switch of first group and diode D11 and second group and load R, insert diode D51, the former limit circuit of the first energy back circuit that is composed in series by capacitor C 21 and high frequency transformer primary coil Lm1 last high-frequency power electronic switch ends parallel connection of first group, the clamp circuit that is composed in series by the negative pole of capacitor C 12 and diode D12 each high-frequency power electronic switch ends parallel connection of second group, between the capacitor C 12 of adjacent clamp circuit and diode D12 tie point, insert diode D22, between the tie point of last the high-frequency power electronic switch of the tie point of the capacitor C 12 of the clamp circuit of first high-frequency power electronic switch of second group and diode D12 and first group and load R, insert diode D52, the former limit circuit of the second energy back circuit that is composed in series by capacitor C 22 and high frequency transformer primary coil Lm2 first high-frequency power electronic switch ends parallel connection of second group, inserting voltage doubling rectifing circuit with the two ends of the high frequency transformer secondary coil Lm ' of high frequency transformer primary coil Lm1 and high frequency transformer primary coil Lm2 coupling, this voltage doubling rectifing circuit is made of the capacitor C 3 and the capacitor C 4 of diode in series D3 and diode D4 and series connection, diode in series D3 and diode D4 and capacitor C 3 of connecting and capacitor C 4 parallel connections, the end of high frequency transformer secondary coil Lm ' links to each other with the tie point of capacitor C 3 with capacitor C 4, the other end of high frequency transformer secondary coil Lm ' links to each other with the tie point of diode D4 with diode D3, constitute first, the secondary circuit of the second energy back circuit, utilize first, the electric charge that the former limit circuit of the second energy back circuit and secondary circuit charge into capacitor C 11 and capacitor C 12 during with clamper feeds back in the power supply and goes, realize dynamic electric voltage clamper and steady-state pressure, at each high-frequency power electronic switch ends parallel resistance Rm, realize static state voltage equipoise;
For reducing the influence of wiring inductance, each the high-frequency power electronic switch that first group in the scheme 5 can be connected in series and the capacitor C 11 at its two ends and diode D11 are encapsulated in the module; The capacitor C 12 and the diode D12 at second group of each high-frequency power electronic switch that is connected in series and its two ends are encapsulated in the module.
The beneficial effects of the utility model are:
The utility model utilizes electric capacity to receive the overvoltage electric charge when the high-frequency power electronic switch is dynamic, the overvoltage electric charge that utilizes high frequency transformer to discharge when high-frequency power electronic switch stable state to receive is to power supply, the passive equalizing when realizing a plurality of high-frequency power electronic devices series connection.Steady-state pressure when the utility model can be realized the series connection of a plurality of high-frequency power electronic devices, dynamic voltage balancing, energy back.Help reducing cost and promote development and the application in industry of high voltage, high-frequency power electronic technology.
Description of drawings
A kind of instantiation circuit diagram of Fig. 1 scheme 1.
A kind of instantiation circuit diagram of Fig. 2 scheme 2.
A kind of instantiation circuit diagram of Fig. 3 scheme 3.
A kind of instantiation circuit diagram of Fig. 4 scheme 4.
A kind of instantiation circuit diagram of Fig. 5 scheme 5.
Embodiment
Further specify the utility model below in conjunction with accompanying drawing.Following specific embodiment is used for the utility model of explaining; rather than the utility model limited; in the protection range of spirit of the present utility model and claim, any modification and change to the utility model is made all fall into protection range of the present utility model.
Scheme 1:
With reference to Fig. 1, when connecting, realize a plurality of high-frequency power electronic devices the circuit of passive equalizing, the high-frequency power electronic K switch 1 of n series connection, K2, Kn be attempted by power supply Ud two ends after load R connects, the two ends shunt capacitance C of power supply, load R goes up anti-and diode D, n 〉=2, the clamp circuit that is composed in series by the positive pole of capacitor C 1-1 and diode D1-1 in each high-frequency power electronic switch ends parallel connection, between the capacitor C 1-1 of adjacent clamp circuit and diode D1-1 tie point, insert diode D2-1, and n high-frequency power electronic K switch n insert diode D5-1 between the negative terminal N of the tie point of capacitor C 1-1 in parallel and diode D1-1 and power supply, simultaneously at the two ends parallel connection of n high-frequency power electronic K switch n series circuit by capacitor C 2-1 and high frequency transformer primary coil Lm-1, capacitor C 2-1, high frequency transformer primary coil Lm-1, load R and diode D5-1 have constituted jointly the former limit circuit of energy back circuit, the voltage doubling rectifing circuit in parallel at high frequency transformer secondary coil Lm '-1 two ends, this voltage doubling rectifing circuit is made of the capacitor C 3-1 and the capacitor C 4-1 of diode in series D3-1 and diode D4-1 and series connection, diode in series D3-1 and diode D4-1 and capacitor C 3-1 that connects and capacitor C 4-1 parallel connection, the end of high frequency transformer secondary coil Lm '-1 links to each other with the tie point of capacitor C 4-1 with capacitor C 3-1, the other end of high frequency transformer secondary coil Lm '-1 links to each other with the tie point of diode D4-1 with diode D3-1, constitute the secondary circuit of energy back circuit, the electric charge that charges into capacitor C 1-1 when utilizing the energy back circuit with clamper feeds back among the power supply Ud by high frequency transformer secondary coil Lm '-1 and voltage doubling rectifing circuit and goes, realize dynamic electric voltage clamper and steady-state pressure, ratio=1 of high frequency transformer primary coil and the number of turn of secondary coil: n, at each high-frequency power electronic two ends parallel resistance Rm-1, realize static state voltage equipoise.
Operation principle:
During stable state, when first high-frequency power electronic K switch 1 both end voltage is higher than second high-frequency power electronic K switch 2 both end voltage, when high-frequency power electronic K switch 1 is opened, corresponding diode D2-1 conducting, the capacitor C 1-1 of high-frequency power electronic K switch 1 correspondence is by high-frequency power electronic K switch 1, the capacitor C 1-1 of high-frequency power electronic K switch 2 correspondences, corresponding diode D2-1 is to the capacitor C 1-1 of high-frequency power electronic K switch 2 correspondences charging, by that analogy, make the voltage of the capacitor C 1-1 of each high-frequency power electronic switch correspondence all be no more than the voltage of the capacitor C 1-1 of n high-frequency power electronic switch correspondence, and voltage=U/n of the capacitor C 1-1 of n high-frequency power electronic switch correspondence, U is a supply voltage, the steady state voltage sum of n high-frequency power electronic switch must equal U simultaneously, thereby realizes steady-state pressure.
(1) turn off process
Have overvoltage to produce on high-frequency power electronic K switch 1, the series circuit of utilization and high-frequency power electronic K switch 1 corresponding diode D1-1, capacitor C 1-1 carries out clamper to high-frequency power electronic K switch 1.The diode D1-1 corresponding with high-frequency power electronic K switch 1 is open-minded, the capacitor C 1-1 corresponding with it is recharged, the capacitor C 1-1 that is recharged has limited the rising of high-frequency power electronic K switch 1 both end voltage, make high-frequency power electronic K switch 1 both end voltage all the time clamper at rated operational voltage, realize the dynamic electric voltage clamper, other n-1 high-frequency power electronic switch dynamic overvoltage clamper principles are also similar.
The energy that fills among the capacitor C 1-1 of high-frequency power electronic switch correspondence must discharge, high-frequency power electronic K switch 1, K2 ... Kn-1 is pooled to the energy of rushing on each self-corresponding capacitor C 1-1 on the capacitor C 1-1 of n high-frequency power electronic K switch n correspondence, the capacitor C 1-1 of high-frequency power electronic K switch n correspondence feeds back to energy among the power supply Ud by high frequency transformer secondary coil Lm '-1 and voltage doubling rectifing circuit and goes, and realizes energy back.
(2) opening process
Can occur each high-frequency power electronic switch when opening equally and bear the uneven problem of voltage.The high-frequency power electronic switching voltage that clamp circuit can limit in the opening process equally is no more than rated value.
Scheme 2:
With reference to Fig. 2, when connecting, realize a plurality of high-frequency power electronic devices the circuit of passive equalizing, the high-frequency power electronic K switch 1 of n series connection, K2, Kn be attempted by power supply Ud two ends after load R connects, the two ends shunt capacitance C of power supply, load R goes up anti-and diode D, n 〉=2, the clamp circuit that is composed in series by the positive pole of capacitor C 1-2 and diode D1-2 in each high-frequency power electronic switch ends parallel connection, between the capacitor C 1-2 of adjacent clamp circuit and diode D1-2 tie point, insert diode D2-2, and n high-frequency power electronic K switch n insert diode D5-2 between the negative terminal N of the tie point of capacitor C 1-2 in parallel and diode D1-2 and power supply, the former limit circuit of the energy back circuit that is composed in series by capacitor C 2-2 and high frequency transformer primary coil Lm-2 in the two ends parallel connection of n high-frequency power electronic K switch n simultaneously, high-frequency power electronic K switch 1 n series connection, K2, the series circuit that the two ends parallel connection of Kn is made up of high frequency transformer secondary coil Lm '-2 and capacitor C 5-2, the secondary circuit of formation energy back circuit; The electric charge that charges into capacitor C 1-2 when utilizing the energy back circuit with clamper feeds back among the power supply Ud by high frequency transformer secondary coil Lm '-2 and capacitor C 5-2 and goes, realize dynamic electric voltage clamper and steady-state pressure, at each high-frequency power electronic two ends parallel resistance Rm-2, realize static state voltage equipoise.
Operation principle:
Steady-state pressure when the high-frequency power electronic switch turns on and off, dynamic electric voltage clamper are identical with scheme 1 principle, no longer too much describe, but energy are to utilize the former and deputy limit circuit of energy back circuit to feed back among the power supply Ud to go, and realizes the passive feedback of energy herein.
With reference to Fig. 3, when connecting, realize a plurality of high-frequency power electronic devices the circuit of passive equalizing, the high-frequency power electronic K switch 1 of n series connection, K2, Kn be attempted by power supply Ud two ends after load R connects, the two ends shunt capacitance C of power supply, load R goes up anti-and diode D, n 〉=2, the clamp circuit that is composed in series by the positive pole of capacitor C 1-3 and diode D1-3 in each high-frequency power electronic switch ends parallel connection, between the capacitor C 1-3 of adjacent clamp circuit and diode D1-3 tie point, insert diode D2-3, and n high-frequency power electronic K switch n insert diode D5-3 between the negative terminal N of the tie point of capacitor C 1-3 in parallel and diode D1-3 and power supply, the former limit circuit of the energy back circuit that is composed in series by capacitor C 2-3 and high frequency transformer primary coil Lm-3 in the two ends parallel connection of n high-frequency power electronic K switch n simultaneously, in the two ends parallel connection of the high-frequency power electronic switch of remaining n-1 series connection by the series circuit of high frequency transformer secondary coil Lm '-3 and capacitor C 5-3, constitute the secondary circuit of energy back circuit, high frequency transformer secondary coil Lm '-3 and high frequency transformer primary coil Lm-3 are autotransformers, the electric charge that charges into capacitor C 1-3 when utilizing the former limit circuit of energy back circuit and secondary circuit with clamper feeds back among the power supply Ud and goes, and realizes dynamic electric voltage clamper and steady-state pressure; At each high-frequency power electronic two ends parallel resistance Rm-3, realize static state voltage equipoise.
Operation principle:
Steady-state pressure when the high-frequency power electronic switch turns on and off, dynamic electric voltage clamper are identical with scheme 1 principle, no longer too much describe, but energy are to utilize the former and deputy limit circuit of energy back circuit to feed back among the power supply Ud to go, and realizes the passive feedback of energy herein.
With reference to Fig. 4, when connecting, realize a plurality of high-frequency power electronic devices the circuit of passive equalizing, the high-frequency power electronic K switch 1 of n series connection, K2, Kn be attempted by power supply Ud two ends after load R connects, the two ends shunt capacitance C of power supply, load R goes up anti-and diode D, n 〉=2, the clamp circuit that is composed in series by negative pole and the capacitor C 1-4 of diode D1-4 in each high-frequency power electronic switch ends parallel connection, between the capacitor C 1-4 of adjacent clamp circuit and diode D1-4 tie point, insert diode D2-4, and first high-frequency power electronic K switch 1 insert diode D5-4 between the anode P of the tie point of capacitor C 1-4 in parallel and diode D1-4 and power supply, the former limit circuit of the energy back circuit that is composed in series by capacitor C 2-4 and high frequency transformer primary coil Lm-4 in the parallel connection of the two ends of first high-frequency power electronic K switch 1 simultaneously, insert voltage doubling rectifing circuit at high frequency transformer secondary coil Lm '-4 two ends, this voltage doubling rectifing circuit is made of the capacitor C 3-4 and the capacitor C 4-4 of diode in series D3-4 and diode D4-4 and series connection, diode in series D3-4 and diode D4-4 and capacitor C 3-4 that connects and capacitor C 4-4 parallel connection, the end of high frequency transformer secondary coil Lm '-4 links to each other with the tie point of capacitor C 4-4 with capacitor C 3-4, the other end of high frequency transformer secondary coil Lm '-4 links to each other with the tie point of diode D4-4 with diode D3-4, constitute the secondary circuit of energy back circuit, the electric charge that charges into capacitor C 1-4 when utilizing the former limit circuit of energy back circuit and secondary circuit with clamper feeds back among the power supply Ud and goes, realize dynamic electric voltage clamper and steady-state pressure, at each high-frequency power electronic two ends parallel resistance Rm-4, realize static state voltage equipoise.
Operation principle:
During stable state, when second high-frequency power electronic K switch 2 both end voltage is higher than first high-frequency power electronic K switch 1 both end voltage, when high-frequency power electronic K switch 2 is opened, corresponding diode D2-4 conducting, the capacitor C 1-4 of high-frequency power electronic K switch 2 correspondences charges to the capacitor C 1-4 of high-frequency power electronic K switch 1 correspondence by the capacitor C 1-4 of high-frequency power electronic K switch 2, high-frequency power electronic K switch 1 correspondence, corresponding diode D2-4, by that analogy, realize steady-state pressure.
(1) turn off process
Have overvoltage to produce on high-frequency power electronic K switch 1, the series circuit of utilization and high-frequency power electronic K switch 1 corresponding diode D1-4, capacitor C 1-4 carries out clamper to high-frequency power electronic K switch 1.The diode D1-4 corresponding with high-frequency power electronic K switch 1 is open-minded, the capacitor C 1-4 corresponding with it is recharged, the capacitor C 1-4 that is recharged has limited the rising of high-frequency power electronic K switch 1 both end voltage, make high-frequency power electronic K switch 1 both end voltage all the time clamper at rated operational voltage, realize the dynamic electric voltage clamper, other n-1 high-frequency power electronic switch dynamic overvoltage clamper principles are also similar.
The energy that fills among the capacitor C 1-4 of high-frequency power electronic switch correspondence must discharge, high-frequency power electronic K switch 2, K3 ... Kn is pooled to the energy of rushing on each self-corresponding capacitor C 1-4 on the capacitor C 1-4 of first high-frequency power electronic K switch 1 correspondence, the capacitor C 1-4 of high-frequency power electronic K switch 1 correspondence feeds back to energy among the power supply Ud by high frequency transformer secondary coil Lm '-4 and voltage doubling rectifing circuit and goes, and realizes energy back.
(2) opening process
Can occur each high-frequency power electronic switch when opening equally and bear the uneven problem of voltage.The high-frequency power electronic switching voltage that clamp circuit can limit in the opening process equally is no more than rated value.
In above-mentioned 4 schemes, for the influence that reduces wiring inductance can with n high-frequency power electronic K switch 1 being connected in series, K2 ... Kn is encapsulated in the module with the clamp circuit that is attempted by each high-frequency power electronic switch ends, and steady-state pressure, dynamic electric voltage clamper and energy back principle are constant.
Scheme 5
With reference to Fig. 5, when connecting, realize a plurality of high-frequency power electronic devices the circuit of passive equalizing, with n high-frequency power electronic K switch 1 that is connected in series, K2, Kn is divided into two groups of K1 of series connection ... Kn-m, Kn-m+ 1 ... Kn, 1≤m＜n, be attempted by power supply Ud two ends behind the serial connection load R between the high-frequency power electronic switch of two groups of series connection, both ends of power shunt capacitance C, load R goes up anti-and diode D, n 〉=2, the clamp circuit that is composed in series by the positive pole of capacitor C 11 and diode D11 each high-frequency power electronic switch ends parallel connection of first group, between the capacitor C 11 of adjacent clamp circuit and diode D11 tie point, insert diode D21, between the tie point of first high-frequency power electronic K switch n-m+1 of the tie point of the capacitor C 11 of the clamp circuit of last high-frequency power electronic K switch n-m of first group and diode D11 and second group and load R, insert diode D51, the former limit circuit of the first energy back circuit that is composed in series by capacitor C 21 and high frequency transformer primary coil Lm1 last high-frequency power electronic K switch n-m two ends parallel connection of first group, the clamp circuit that is composed in series by the negative pole of capacitor C 12 and diode D12 each high-frequency power electronic switch ends parallel connection of second group, between the capacitor C 12 of adjacent clamp circuit and diode D12 tie point, insert diode D22, between the tie point of last the high-frequency power electronic K switch n-m of the tie point of the capacitor C 12 of the clamp circuit of first high-frequency power electronic K switch n-m+1 of second group and diode D12 and first group and load R, insert diode D52, the former limit circuit of the second energy back circuit that is composed in series by capacitor C 22 and high frequency transformer primary coil Lm2 first high-frequency power electronic K switch n-m+1 two ends parallel connection of second group, inserting voltage doubling rectifing circuit with the two ends of the high frequency transformer secondary coil Lm ' of high frequency transformer primary coil Lm1 and high frequency transformer primary coil Lm2 coupling, this voltage doubling rectifing circuit is made of the capacitor C 3 and the capacitor C 4 of diode in series D3 and diode D4 and series connection, diode in series D3 and diode D4 and capacitor C 3 of connecting and capacitor C 4 parallel connections, the end of high frequency transformer secondary coil Lm ' links to each other with the tie point of capacitor C 3 with capacitor C 4, the other end of high frequency transformer secondary coil Lm ' links to each other with the tie point of diode D4 with diode D3, constitute first, the secondary circuit of the second energy back circuit, utilize first, the electric charge that the former limit circuit of the second energy back circuit and secondary circuit charge into capacitor C 11 and capacitor C 12 during with clamper feeds back among the power supply Ud and goes, realize dynamic electric voltage clamper and steady-state pressure, at each high-frequency power electronic switch ends parallel resistance Rm, realize static state voltage equipoise;
Operation principle:
During stable state, for high-frequency power electronic K switch 1, K2 ... Kn-m, when first high-frequency power electronic K switch 1 both end voltage is higher than second high-frequency power electronic K switch 2 both end voltage, after high-frequency power electronic K switch 1 is opened, corresponding diode D21 conducting, the capacitor C 11 of high-frequency power electronic K switch 1 correspondence is by high-frequency power electronic K switch 1, the capacitor C 12 of high-frequency power electronic K switch 2 correspondences, corresponding diode D22 is to capacitor C 12 chargings of high-frequency power electronic K switch 2 correspondences, by that analogy, realize high-frequency power electronic K switch 1, K2 ... the steady-state pressure of Kn-m.For high-frequency power electronic K switch n-m+ 1, Kn-m+ 2 ... Kn, when high-frequency power electronic K switch n-m+ 1 both end voltage is higher than high-frequency power electronic K switch n-m both end voltage, after high-frequency power electronic K switch n-m+ 1 opens, corresponding diode D22 conducting, the capacitor C 1 of high-frequency power electronic K switch n-m+ 1 correspondence is by high-frequency power electronic K switch n-m+ 1, the capacitor C 11 of high-frequency power electronic K switch n-m correspondence, corresponding diode D21 is to capacitor C 11 chargings of high-frequency power electronic K switch n-m correspondence, by that analogy, realize high-frequency power electronic K switch n-m+ 1, Kn-m+ 2 ... the steady-state pressure of Kn.
Dynamic electric voltage clamper principle is both combinations of scheme 1 and scheme 4, finally can realize dynamic electric voltage clamper and energy back equally, no longer too much describes herein.
For the influence that reduces wiring inductance can be encapsulated in the capacitor C 11 and the diode D11 at first group of each high-frequency power electronic switch that is connected in series and its two ends in the module; The capacitor C 12 and the diode D12 at second group of each high-frequency power electronic switch that is connected in series and its two ends are encapsulated in the module.
Claims (10)
1. realize the circuit of passive equalizing when many high-frequency power electronic devices are connected, high-frequency power electronic switch (the K1 that it is characterized in that n series connection, K2, Kn) with after load R connects be attempted by power supply (Ud) two ends, the two ends shunt capacitance C of power supply, load R goes up anti-and diode D, n 〉=2, the clamp circuit that is composed in series by the positive pole of capacitor C 1-1 and diode D1-1 in each high-frequency power electronic switch ends parallel connection, between the capacitor C 1-1 of adjacent clamp circuit and diode D1-1 tie point, insert diode D2-1, and n high-frequency power electronic switch (Kn) insert diode D5-1 between the negative terminal (N) of the tie point of capacitor C 1-1 in parallel and diode D1-1 and power supply, simultaneously at the two ends parallel connection of n high-frequency power electronic switch (Kn) series circuit by capacitor C 2-1 and high frequency transformer primary coil Lm-1, capacitor C 2-1, high frequency transformer primary coil Lm-1, load R and diode D5-1 have constituted jointly the former limit circuit of energy back circuit, the voltage doubling rectifing circuit in parallel at high frequency transformer secondary coil Lm '-1 two ends, this voltage doubling rectifing circuit is made of the capacitor C 3-1 and the capacitor C 4-1 of diode in series D3-1 and diode D4-1 and series connection, diode in series D3-1 and diode D4-1 and capacitor C 3-1 that connects and capacitor C 4-1 parallel connection, the end of high frequency transformer secondary coil Lm '-1 links to each other with the tie point of capacitor C 4-1 with capacitor C 3-1, the other end of high frequency transformer secondary coil Lm '-1 links to each other with the tie point of diode D4-1 with diode D3-1, constitute the secondary circuit of energy back circuit, the electric charge that charges into capacitor C 1-1 when utilizing the energy back circuit with clamper feeds back in the power supply (Ud) by high frequency transformer secondary coil Lm '-1 and voltage doubling rectifing circuit and goes, realize dynamic electric voltage clamper and steady-state pressure, ratio=1 of high frequency transformer primary coil and the number of turn of secondary coil: n, at each high-frequency power electronic two ends parallel resistance Rm-1, realize static state voltage equipoise.
2. realize the circuit of passive equalizing during a plurality of high-frequency power electronic devices series connection according to claim 1, n the high-frequency power electronic switch that it is characterized in that being connected in series (K1, K2 ... Kn) and the clamp circuit that is connected in parallel on each high-frequency power electronic switch ends be encapsulated in the module.
3. realize the circuit of passive equalizing when many high-frequency power electronic devices are connected, high-frequency power electronic switch (the K1 that it is characterized in that n series connection, K2, Kn) with after load R connects be attempted by power supply (Ud) two ends, the two ends shunt capacitance C of power supply, load R goes up anti-and diode D, n 〉=2, the clamp circuit that is composed in series by the positive pole of capacitor C 1-2 and diode D1-2 in each high-frequency power electronic switch ends parallel connection, between the capacitor C 1-2 of adjacent clamp circuit and diode D1-2 tie point, insert diode D2-2, and n high-frequency power electronic switch (Kn) insert diode D5-2 between the negative terminal (N) of the tie point of capacitor C 1-2 in parallel and diode D1-2 and power supply, the former limit circuit of the energy back circuit that is composed in series by capacitor C 2-2 and high frequency transformer primary coil Lm-2 in the two ends parallel connection of n high-frequency power electronic switch (Kn) simultaneously, high-frequency power electronic switch (K1 n series connection, K2, Kn) series circuit that two ends parallel connection is made up of high frequency transformer secondary coil Lm '-2 and capacitor C 5-2, the secondary circuit of formation energy back circuit; The electric charge that charges into capacitor C 1-2 when utilizing the energy back circuit with clamper feeds back in the power supply (Ud) by high frequency transformer secondary coil Lm '-2 and capacitor C 5-2 and goes, realize dynamic electric voltage clamper and steady-state pressure, at each high-frequency power electronic two ends parallel resistance Rm-2, realize static state voltage equipoise.
4. realize the circuit of passive equalizing during a plurality of high-frequency power electronic devices series connection according to claim 3, n the high-frequency power electronic switch that it is characterized in that being connected in series (K1, K2 ... Kn) and the clamp circuit that is connected in parallel on each high-frequency power electronic switch ends be encapsulated in the module.
5. realize the circuit of passive equalizing when many high-frequency power electronic devices are connected, high-frequency power electronic switch (the K1 that it is characterized in that n series connection, K2, Kn) with after load R connects be attempted by power supply (Ud) two ends, the two ends shunt capacitance C of power supply, load R goes up anti-and diode D, n 〉=2, the clamp circuit that is composed in series by the positive pole of capacitor C 1-3 and diode D1-3 in each high-frequency power electronic switch ends parallel connection, between the capacitor C 1-3 of adjacent clamp circuit and diode D1-3 tie point, insert diode D2-3, and n high-frequency power electronic switch (Kn) insert diode D5-3 between the negative terminal (N) of the tie point of capacitor C 1-3 in parallel and diode D1-3 and power supply, the former limit circuit of the energy back circuit that is composed in series by capacitor C 2-3 and high frequency transformer primary coil Lm-3 in the two ends parallel connection of n high-frequency power electronic switch (Kn) simultaneously, in the two ends parallel connection of the high-frequency power electronic switch of remaining n-1 series connection by the series circuit of high frequency transformer secondary coil Lm '-3 and capacitor C 5-3, constitute the secondary circuit of energy back circuit, high frequency transformer secondary coil Lm '-3 and high frequency transformer primary coil Lm-3 are autotransformers, the electric charge that charges into capacitor C 1-3 when utilizing the former limit circuit of energy back circuit and secondary circuit with clamper feeds back in the power supply (Ud) and goes, and realizes dynamic electric voltage clamper and steady-state pressure; At each high-frequency power electronic two ends parallel resistance Rm-3, realize static state voltage equipoise.
6. realize the circuit of passive equalizing during a plurality of high-frequency power electronic devices series connection according to claim 5, n the high-frequency power electronic switch that it is characterized in that being connected in series (K1, K2 ... Kn) and the clamp circuit that is connected in parallel on each high-frequency power electronic switch ends be encapsulated in the module.
7. realize the circuit of passive equalizing when many high-frequency power electronic devices are connected, high-frequency power electronic switch (the K1 that it is characterized in that n series connection, K2, Kn) with after load R connects be attempted by power supply (Ud) two ends, the two ends shunt capacitance C of power supply, load R goes up anti-and diode D, n 〉=2, the clamp circuit that is composed in series by negative pole and the capacitor C 1-4 of diode D1-4 in each high-frequency power electronic switch ends parallel connection, between the capacitor C 1-4 of adjacent clamp circuit and diode D1-4 tie point, insert diode D2-4, and first high-frequency power electronic switch (K1) insert diode D5-4 between the anode (P) of the tie point of capacitor C 1-4 in parallel and diode D1-4 and power supply, the former limit circuit of the energy back circuit that is composed in series by capacitor C 2-4 and high frequency transformer primary coil Lm-4 in the two ends parallel connection of first high-frequency power electronic switch (K1) simultaneously, insert voltage doubling rectifing circuit at high frequency transformer secondary coil Lm '-4 two ends, this voltage doubling rectifing circuit is made of the capacitor C 3-4 and the capacitor C 4-4 of diode in series D3-4 and diode D4-4 and series connection, diode in series D3-4 and diode D4-4 and capacitor C 3-4 that connects and capacitor C 4-4 parallel connection, the end of high frequency transformer secondary coil Lm '-4 links to each other with the tie point of capacitor C 4-4 with capacitor C 3-4, the other end of high frequency transformer secondary coil Lm '-4 links to each other with the tie point of diode D4-4 with diode D3-4, constitute the secondary circuit of energy back circuit, the electric charge that charges into capacitor C 1-4 when utilizing the former limit circuit of energy back circuit and secondary circuit with clamper feeds back in the power supply (Ud) and goes, realize dynamic electric voltage clamper and steady-state pressure, at each high-frequency power electronic two ends parallel resistance Rm-4, realize static state voltage equipoise.
8. realize the circuit of passive equalizing during a plurality of high-frequency power electronic devices series connection according to claim 7, n the high-frequency power electronic switch that it is characterized in that being connected in series (K1, K2 ... Kn) and the clamp circuit that is attempted by each high-frequency power electronic switch ends be encapsulated in the module.
9. realize the circuit of passive equalizing when many high-frequency power electronic devices are connected, it is characterized in that the individual high-frequency power electronic switch (K1 that is connected in series with n, K2, Kn) be divided into two groups of (K1 of series connection ... Kn-m, Kn-m+1 ... Kn, 1≤m＜n), be attempted by power supply (Ud) two ends behind the serial connection load R between the high-frequency power electronic switch of two groups of series connection, both ends of power shunt capacitance C, load R goes up anti-and diode D, n 〉=2, the clamp circuit that is composed in series by the positive pole of capacitor C 11 and diode D11 each high-frequency power electronic switch ends parallel connection of first group, between the capacitor C 11 of adjacent clamp circuit and diode D11 tie point, insert diode D21, between the tie point of first high-frequency power electronic switch (Kn-m+1) of the tie point of the capacitor C 11 of the clamp circuit of last high-frequency power electronic switch (Kn-m) of first group and diode D11 and second group and load R, insert diode D51, the former limit circuit of the first energy back circuit that is composed in series by capacitor C 21 and high frequency transformer primary coil Lm1 last high-frequency power electronic switch (Kn-m) two ends parallel connection of first group, the clamp circuit that is composed in series by the negative pole of capacitor C 12 and diode D12 each high-frequency power electronic switch ends parallel connection of second group, between the capacitor C 12 of adjacent clamp circuit and diode D12 tie point, insert diode D22, between the tie point of last the high-frequency power electronic switch (Kn-m) of the tie point of the capacitor C 12 of the clamp circuit of first high-frequency power electronic switch (Kn-m+1) of second group and diode D12 and first group and load R, insert diode D52, the former limit circuit of the second energy back circuit that is composed in series by capacitor C 22 and high frequency transformer primary coil Lm2 first high-frequency power electronic switch (Kn-m+1) two ends parallel connection of second group, inserting voltage doubling rectifing circuit with the two ends of the high frequency transformer secondary coil Lm ' of high frequency transformer primary coil Lm1 and high frequency transformer primary coil Lm2 coupling, this voltage doubling rectifing circuit is made of the capacitor C 3 and the capacitor C 4 of diode in series D3 and diode D4 and series connection, diode in series D3 and diode D4 and capacitor C 3 of connecting and capacitor C 4 parallel connections, the end of high frequency transformer secondary coil Lm ' links to each other with the tie point of capacitor C 3 with capacitor C 4, the other end of high frequency transformer secondary coil Lm ' links to each other with the tie point of diode D4 with diode D3, constitute first, the secondary circuit of the second energy back circuit, utilize first, the electric charge that the former limit circuit of the second energy back circuit and secondary circuit charge into capacitor C 11 and capacitor C 12 during with clamper feeds back in the power supply (Ud) and goes, realize dynamic electric voltage clamper and steady-state pressure, at each high-frequency power electronic switch ends parallel resistance Rm, realize static state voltage equipoise;
10. realize the circuit of passive equalizing when a plurality of high-frequency power electronic devices according to claim 9 is connected, it is characterized in that the capacitor C 11 and the diode D11 at first group of each high-frequency power electronic switch that is connected in series and its two ends are encapsulated in the module; The capacitor C 12 and the diode D12 at second group of each high-frequency power electronic switch that is connected in series and its two ends are encapsulated in the module.
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| Application Number | Priority Date | Filing Date | Title |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108134506A (en) * | 2017-12-15 | 2018-06-08 | 全球能源互联网研究院有限公司 | Pressure module and electronic device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108134506A (en) * | 2017-12-15 | 2018-06-08 | 全球能源互联网研究院有限公司 | Pressure module and electronic device |
| CN108134506B (en) * | 2017-12-15 | 2020-10-16 | 全球能源互联网研究院有限公司 | Voltage equalizing module and electronic device |
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