TW201041267A - Intelligent hybrid power conversion control system - Google Patents

Abstract

The aim of this invention is to develop an intelligent hybrid power conversion control system. The input of the proposed system includes two dc power sources and an energy-storage device. The energy-storage device, such as a super-capacitor bank or battery modules, is used for the transition stage of the system start up or peak power demand. Therefore, the ability of bidirectional power flow is necessary for charging or discharging the energy-storage device. The input dc power sources with different low voltages are regulated to a high dc-bus voltage. Then, in the dc/ac inverter output, the voltage is converted to a sinusoid ac voltage with the same power quality, such as amplitude and frequency, of the utility. Thus, the output of the inverter could be grid-connected to the utility via current control techniques or used to supply electric appliances in the stand-alone type via voltage control techniques. In the proposed system, the power management and control unit contains a digital signal processor (DSP) and peripheral circuits. The procedure of the power management and control algorithm is implemented via the DSP. The algorithm deals with the power flows between different input sources and the output terminal to achieve the minimum fuel consumption or the maximum power extraction and to reduce the reactive power caused by the inappropriate power management for the objective of high-efficiency operational situations. Due to the feedback signals from each power source and the excellent calculation of the DSP, the instantaneous power can be obtained. After the well-designed power management and control algorithm, the input/output power commands are generated and used for regulating the power converts and inverter. In the end, the input sources and the output power will follow the desired power commands.

Description

201041267 VI. Description of the Invention: [Technical Fields of the Invention] The technical field involved in the present invention includes power electronics, energy technology, power supply, storage, automatic control, and parallel power supply, but the present invention mainly develops clean energy and power supplies. The hybrid device is used as an input hybrid power conversion control system to operate the overall system in the most efficient state via an electrical 'source management control method. [Prior Art] Ο Due to the oil crisis, the problem of insufficient energy has caused new energy development to be an important issue. In order to not accelerate the destruction of the earth's natural environment, the development of clean energy is of the utmost importance in the development of new energy. Clean energy such as fuel cells [1], [2], solar cells, [3], [4], wind turbines [5], [6], and other low-pollution energy sources, coupled with power electronics and auto-control Related technologies can be widely used in decentralized power generation devices, such as new generations, force vehicles, uninterruptible power systems, independent power generation systems, etc., but such booming fuel cells, solar photovoltaics, and small wind turbines, etc. Emerging energy sources have the characteristics of DC low-voltage power generation. However, almost all household appliances are high-voltage: 110¥_ or 220¥„^ AC power, so the power q-source converter developed in the field of power electronics research is clean energy. An indispensable part of the application; on the other hand, in the use of clean energy, when applying clean energy to a decentralized power generation system, in order to provide a continuous and stable power supply, a power storage device is generally required as an auxiliary power supply system [7] ], [8], which can effectively reduce the backup capacity of clean energy, thereby reducing system settings and power supply costs. Therefore, it contains a mixture of two or more clean energy sources and batteries. The power generation system is a research trend that is currently actively developing. It can complement the power supply to solve the problems caused by fuel exhaustion, insufficient sunshine, or lack of wind energy. However, it also derives control problems of power distribution between power sources and power storage. The charging and discharging technology of the device, as well as how to effectively manage the power supply and complete the optimal control, to achieve high-efficiency power conversion and save energy, has become a challenge in the clean energy power converter. In general, the control of general power electronics adopts the analogy 4 201041267 control architecture. In the power distribution and power management control, many peripheral circuits need to be added to complete the required program control. In view of this, a digital signal processor is used to provide The choice of flexible modification and multi-function, and the realization of the mathematical operations required for intelligent control, complete the power control and power distribution optimization program control, so the use of digital signal processor as the power management controller is currently the mainstream of research and development. For DC/DC converters, the legacy system architecture is more The converter is connected in parallel to the DC high-voltage busbar as the front-end power supply of the converter or directly applied to the circuit device. The system structure has the advantages of large size, complicated circuit and high cost. In order to simplify the circuit structure, improve performance and reduce cost, the converter has a single The DC/DC converters of the two-stage and two-input are indispensable devices, and are also the goals that are being pursued at home and abroad. Therefore, the intelligent hybrid power conversion control system disclosed by the present invention uses - dual input DC /DC converter to convert low-voltage clean energy to high-voltage DC sink. Rows can reduce system size and installation cost; since clean energy power generation devices usually do not have energy storage capacity, their applications are often equipped with power storage devices, the present invention' The intelligent hybrid power conversion control system disclosed has a bidirectional DC/DC converter, which enables the system to have a bidirectional energy transfer function, and the DC bus power can charge the power storage device through the converter. For DC/AC converter applications, the full-bridge DC/AC converter is simple in architecture and can be used to control the bidirectional power flow. This converter is widely used in industrial motor drive control. Whether it is the independent supply AC load [9] or the mains grid-connected operation [10], there are cases in which the full-bridge converter is successfully applied; in the intelligent hybrid power conversion control system disclosed by the present invention, DC / AC converter in independent power supply mode, the output AC voltage can be used for AC load, when the DC / AC converter is operated in the grid-connected mode, by controlling the DC / AC converter output current size and flow direction To complete the required power management purposes: When the power storage device voltage is too low, the power can be charged to the power storage device through the DC/AC converter and the bidirectional DC/DC converter; when the second power source (for example When solar cells, wind turbines, etc. are abundant, they can feed excess power into the power network. With the rise of decentralized power supplies and clean energy, the current power management control is a research field developed by the new 5 201041267, which mainly solves the problem of optimizing the distribution of power generation among power sources in a multi-input hybrid power supply system. Avoid unnecessary waste of electricity to improve the efficiency of the overall power supply system. In the intelligent hybrid power conversion control system disclosed by the invention, the power management control method will be digitally controlled to achieve power management and power distribution; in the grid-connected mode, the clean energy power can be converted to a general load for use. At the peak of electricity, it can reduce the demand for the mains power supply. If there is excess power in the system input, it can even return the power to the mains in the way of reverse current. When the ionization peak is used, the electric energy storage device can be charged, which indirectly reduces the petrochemical fuel. The amount of usage, this power management control method can automatically detect when the mains connection is 0 or OFF or when the mains power quality is unstable, the system provides the independent supply mode to supply the load. References* [1] RJ Wai and CY Lin, High-efficiency, high-st6p-up DC-DC converter for fuel-cell generation system, 5, IEE Proc. Electr. Power Appl, vol. 152, no. Pp. 1371-1378, 2005.

[2] Z. Jiang and R. A. Dougal, t{A compact digitally controlled fuel cell/battery hybrid power source, 55 IEEE Trans. Ind. Electron., vol. 53, pp. 1094-1104, 2006.

[3] R. Gonzalez, J. Lopez, P. Sanchis, and L. Marroyo, "Transformerless 0 inverter for single-phase photovoltaic systems, 5, IEEE Trans. Power

Electron., vol. 22, no. 2, pp. 693-697, 2007.

[4] N. Kasa, T. Iida, and L. Chen, "Flyback inverter controlled by sensorless current MPPT for photovoltaic power system, IEEE Trans. Ind. Electron., vol. 52, pp. 1145-1152, 2005.

[5] RJ Wai, CY Lin, and YR Chang, tsNovel maximum-power-extraction algorithm for PMSG wind generation system,, 5 IET Proc. Electr. Power Appl, vol. 1, no. 2, pp. 275-283, 2007.

[6] W. Sweet, ^Energy answer-blowing in the wind, 55 IEEE Spectrum, vol. 41, pp. 10-12, 2004.

[7] E. Sanchis-Kilders, A. Ferreres, E. Maset, JB Ejea, V. Esteve, J. Jordan, 201041267 A Garrigos, and J. Calvente, uSoft switching bidirectional converter for battery discharging-charging" in /Voc Dp/?/· Corpse ower (APEC), 2006, pp. 19-23.

[8] M. Marchesoni and C. Vacca, "New DC-DC converter for energy storage system interfacing in fuel cell hybrid electric vehicles, v IEEE Trans. Power Electron., vol. 22, no. 1, pp. 301-308 , 2007.

[9] R. J. Wai, W. H. Wang, and C. Y. Lin, ''High-performance stand-alone photovoltaic generation system, 55 IEEE Trans. Ind. Electron., vol. 55, no. 1, pp. 240-250, 2008.

[10] R_J. Wai and W. H. Wang, “Grid-connected photovoltaic generation system, 55 IEEE Trans. Circuits and Systems Part /, vol. 55, no. 4, pp. 953-964, 2008. The smart hybrid power conversion control system disclosed in the present invention has a structure as shown in FIG. 1. The system is composed of a power management control unit 102, a first power source 103, a second power source 104, and a power storage device. 5. DC load 106, AC load 107, power network 108, power network 1〇9, signal network 1〇1〇, dual input DC/DC converter 1011, bidirectional DC/DC converter 1012, DC/AC converter 1〇13 and DC busbar 1014 are combined, and the power supply network 1〇9, the control network 1〇1〇 direction and its system architecture are shown in Fig. 1. The intelligent hybrid power conversion control disclosed by the invention In the system 1〇1, the power management control unit 1〇2 is connected to each power converter by the signal network 1010, and is calculated by intelligent control method by feedback system input/round power and DC bus 1014 voltage and current signals. Out of electricity The power command, management and control of each power converter and input/output power supply can reduce the virtual power generated by improper power management in the system, 7 201041267 to improve the overall efficiency of the system; the main working system of the dual input DC/DC converter 1011 The first power source .103 power and the second power source 104 are simultaneously converted into the DC bus 1014 power, and one of the two power sources can be separately converted into the DC bus 1014, and the DC bus 1014 can be used to supply the power. The DC load 106 and the subsequent DC-/AC converter 1013; the main function of the bidirectional DC/DC converter 1012 is to convert the power storage device 05 power into the DC bus 1014, or the DC bus 1014 through the power. The bidirectional DC/DC converter 1012 charges the power storage device 105, and the bidirectional DC/DC converter 1012 has the function of bidirectional power flow; the main function of the DC/' AC converter 10:1.3 is DC convergence. The row 1 014 energy is converted into AC 'electric energy, the AC load 107 is supplied or powered in parallel with the power network 108, and the power network 108 can also be powered The DC/AC converter 1013 functions as a bidirectional power flow in a rectified manner. The intelligent hybrid power conversion control system 101 disclosed in the present invention, wherein the control flow of the power management control unit 102 is The power management control method 201, the control flow of the method 如图 is as shown in FIG. 2, and the digital signal processor is used for digital control, and the power supply optimization process is achieved by the intelligent power management process, and each input power is generated. The power control command can effectively manage the input/output power of the intelligent hybrid power conversion control system 101, so that the system can be operated in an independent power supply mode or a grid-connected power supply mode. The main steps of the power management control method 201 include: step 202, When the power management control method 201 is started, the grid-connected indicator (/ melon^) is set to 0 first, which means that the system is preset to an independent power supply mode, and the shutdown indicator (office 7) is set to 0, indicating that the system is in a normal operating state. Then proceeding to step 203; step 203 estimating the initial state of charge state of the power storage device 8 201041267 105 (SOC; The initial state of charge state (SOC) is obtained by feedback of the voltage of the power storage device 105. Then, proceed to step 204; step 204, determine whether the grid-connected indicator (such as <) is 1, if yes, proceed to step 206, and if not, proceed to - step 205; step 205, the system operates in an independent power supply mode, Next, step _ 207 is performed; in step 206, the system operates in the mains grid-connected mode, and then step 207 is performed; step 207, the power storage device state decision is made by integrating the instantaneous current versus time of the power storage device 105, and dividing the power storage device After the total capacity of 105, plus the original state of charge (SOC), the current state of charge (SOC) of the power storage device 105 can be estimated. The present decision is expected to maintain the state of charge (SOC) of the power storage device 105. The maximum value is set, and the output is used in the overload mode of the independent power supply mode and the system startup condition. Therefore, after the charge state (SOC) of the power storage device 105 is known, the charge state of the power storage device 105 can be controlled or linearly corresponding. Relationship, calculate the power storage device virtual charging power command (Ρ3>ι;), and then proceed to step 208; step 208, power network State decision, by returning the mains voltage and setting the peak value range under its normal state, judging whether the peak value of the AC voltage is normal, and using the phase-locked loop control to estimate the phase angle of the mains voltage, when the mains voltage When the size is normal, and the phase angle of the mains voltage is successfully estimated, the grid-connected indicator (/«&) is set to 1. Otherwise, the grid-connected indicator (/Mg) is set to 〇, and the step is performed in step 209; 209. Determine whether the shutdown indicator (/m^) is 1. If yes, it indicates that the sum of the current input power power cannot supply the sum of the load demand power, forcing the power management control method 201 to end the main program and the intelligent hybrid power conversion control system 101 Shutdown, if not, represents the smart hybrid power conversion control system 101 in a normal operating state, and then proceeds to step 9 201041267 204. In the power supply control method 201, the step 205 is independent power supply mode control flow, and the sub-program is... ι栝·Step 301 'Connecting the network switch, 叮 Output the system AC power and the mains The splicer proceeds to step 302; in step 302, the system inputs/rounds the motor and the overall power of the leaf yoke system is rotated (in the case of DC negative _ power consumption (6) and Ο ο

> sum of melon load power consumption, C corpse flC order 303; step 303, according to the return and the first - power supply 1 〇 4 voltage and P ” original 1G4 power can be obtained, the latter step 3 〇4, if not, proceed to step 305; step 304, =::: control mode determines the first power front potential and sets the second power supply "order (4) to the second power supply maximum step 306; step 306, judge 2, Bribe) 'taker to take the step outside the φ take power (U is greater than the system and if the θ P book device virtual charging power command (〇 right 疋 ' pick up step 3 〇 7, if independent _ lower ten _ Large!^Smoke; Steps, ^ (2, MPPT) is greater than the sum of the system's overall output = virtual memory power command (v), set the system's overall relay power (power ^ power command (8) is The H original storage device virtual charging power command, and then the independent power supply right. 3, ν ^ pull back power management control method 2 〇 1 main ^ ^ 8, when the second power maximum draw power (corpse,. Output power (8) and power storage f set virtual charging ΗΑ (2, _) is less than the system's overall second power supply maximum uncovering power, = ((), and then judge 2'ΜΡΡΤ) /, "again the first - power maximum power (6) 201041267 (four) unified overall output power (gamma_ storage device virtual charging work, 3, V sum, right is Then, proceed to step 309, if not, follow the steps recommended; step 309, independently supply the thunder and the first, the bottom, the second power source maximum draw power (smart, _) source storage «set virtual charging work: Pure overall output power (when the sum of gamma 7 is the sum of the system's overall output power (ie) and the power storage device virtual charge *, ❹ rate '^(6, ν), minus the second power supply maximum Take power (Ρ package source take ° and then the first - power power command (/ 〇, after the social bundle independent power supply mode process, Λ 1 Λ, port power supply control method 201 main program; step 3 〇 1 〇 'independent power supply mode P + M 0帛—the maximum power drawn by the power supply (the sum of U and the first ', the first rate (矸max) is less than the overall output power of the system. (Micro power storage device virtual charging power command 3 , ν σ Temple, set the first power power command (household, the maximum power of the first power source 1 1) For, 'Qing'' and the second power source can draw the sum of the maximum power of the power source (...to the overall output power of the system (:: Curry is the power storage device virtual charging power command (v), then step by step 305 'f two power supply is not, _ 令 ΡΊΑ ΡΊΑ ΡΊΑ ΡΊΑ 于 于 于 于 于 于 于 于 于 于 于 于 于 于 疋 疋 疋 疋 疋 疋 疋 疋 疋 疋 疋 疋 疋 疋 疋 疋 疋 疋 疋 疋 疋 疋 疋 疋 疋 疋 疋 疋, max) is greater than the system's overall output power (corpse) 盥 power storage dream, electric power command (P original storage device virtual charge 3, V right 疋, pick up step 3012, if not, then proceed to v 3 〇 13; steps 3 〇I 9, think · * μ two 12 independent power supply mode 'the first power supply maximum power (household) is greater than the system's overall output power (8) * 1, max zh, the original storage device virtual charging power command sum when 'the first - Power supply command (we set the sum of the system (8) and the power supply faulty device virtual charging power output power level, then end the independent 11 201041267 electrical mode flow, return to the power management control "Khan on the J method 01 main program; steps 3013, alone In the power supply mode, the maximum power (l,max) of the first power supply is less than the total output power of the system (household) and the power storage device virtual charging power input 1 • the sum of the painter and the 叩7 (chemical), set the first The power supply 〒々(々) is the maximum power of the first power supply, η & (丨, job)' and the power storage device virtual charging power command (house 3:) is set to the first - the maximum power of the power (6 hui) After subtracting the difference between the overall output power of the system, then perform the earth step 3014, step 3014, to determine whether the power storage device (仏) is greater than zero, and if so, the power storage device is intended to charge power 叩7 (heart) is positive. 'The representative system has enough input power to charge the electric source storage device 1G5, then end the independent power supply mode flow, return to the power supply control method 201 main program' If no, then proceed to step 3 (1) 5; step 3 (10), the power storage device virtual The charging power command (〇 is negative, that is, when the power storage device (10) is in the domain power state, it is determined whether the power storage device 1〇5 charge state (8) C) is smaller than the set power storage device 105 charge state. Value (milk, if yes, proceed to step 3016) If no, proceed to step 3017 to determine if the power storage device virtual charging power command (<) is less than the minimum power of the set power storage device (house 3, mJ ' In other words, it is determined whether the power storage device 1〇5 exceeds its set discharge maximum power. If yes, proceed to step 3〇16, and if not, terminate the independent power supply mode flow 'return power management control method 2〇1 main program; step 3〇16 At this time, the sum of the input power and the sum of the power cannot be supplied to the sum of the load demand power. 'Set the stop indicator (/〇1' to end the independent power supply mode flow, and return to the main program of the power management control method. In the power management control method 201, the step 206 mains grid-connected mode control flow is as shown in FIG. 4 of FIG. 4, and the sub-program execution step includes: step 401, the grid-connected switch is turned on, and the system outputs AC power and the mains connection, and Set the first power power command (<) to zero, and then proceed to step 402; step 402, feedback the system input/output voltage and current, and calculate the overall system output power (ie), then the system overall output power Definition: For DC load power consumption (Prfe), proceed to step 403; step 403, according to feedback of the second power source 104 voltage and current, determine whether the second power 104 power can be obtained, and if so, proceed to step 404, if not And then proceeding to step 405; step 404, determining the second power command (P/) by the maximum power rate control mode, and setting the second power source _ command (P/) to the second power source maximum draw power ( Ρ2>ΜΡΡΤ), the receiver proceeds to step 406; step 406, determining whether the maximum power drawn by the second power source (Ρ2Μρρτ) is greater than the overall output power of the system (f) and the power storage device Set the sum of the virtual charging power commands (&/), and if yes, proceed to step 407. If not, proceed to step 408; in step 407, the maximum power drawn by the second power source (Ρ2Μρρτ) is greater than the overall system. When the output power (/p is equal to the power storage device virtual charging power command (P3>v*), the second power source is maximized to draw power (p2>MPPT), minus the overall system output power (ip, minus The power storage device virtual charging power command (p3>v*), the calculated positive value is set as the mains grid-connected power command (intelligent*), in other words, the second power source 104 power is deducted from the remaining power of the system demand. All are fed into the mains, and then the mains grid-connected mode flow is returned to the power management control method 201 main program; in step 408, in the mains grid-connected mode, the second power maximum draw power (ρ2 > ΜΡΡΤ) is less than the overall system output power ( When the ip is combined with the virtual storage power command (P3/) of the power storage device, the maximum power drawn by the second power source (P2MPPT) is subtracted from the overall output power of the system, and then subtracted. Power storage device virtual charge 13 201041267 Electric power command (〇, calculated negative value, set to the mains grid-connected power command (<)' In other words, the second power 104 energy is deducted from the system demand after the power is insufficient The utility power feedback back to the system #b, and then ends the mains grid-connected mode process, and returns to the power management control method 201 main program; in step 405, when the second power source is not available, the second power command is set to zero, and the step 4 is performed. 9: The step is to 'set the mains grid-connected power command (() to the sum of the system's overall output power (8) and the power storage device's virtual charging power command (ν). At this time, the mains feedback power is returned to the system, and then ends. The mains grid-connected mode process returns to the power management control method 201 main program. The intelligent hybrid power conversion control system 丨〇1 disclosed in the present invention is characterized in that: the first point, the system comprises a first power source 1-3, a second power source 〇4, and a set of power storage devices 105' It can be powered by either group of power supplies or by two power sources to three power sources, i. The second point, the system's first power source j 〇3 and the first power source 丄 (10) use a single dual input DC/DC converter. 1〇11, simplifying the system architecture of traditional multi-group DC/DC converters; thirdly, the system includes a bidirectional DC/DC converter 1012, which can achieve the bidirectional power flow required for charging and discharging the power storage device 1〇5. The fourth point, the first output, may be the DC load 106 on the DC bus 1014, and the AC load 1〇7 of the DC/AC converter 1013, or may be connected in parallel with the power network 1〇8; When the system is powered in parallel with the power network 1〇8, the power network storage device 105 can be charged after the power network 1〇8 is converted. [Embodiment] FIG. 5 shows a system architecture of one embodiment of a smart hybrid power conversion control system disclosed in the present invention, and indicates a pulse width modulation signal 507 and feedback required for each power converter. The signal 508 is in the direction of FIG. 5; in this embodiment, the first power source 103 uses a fuel cell 501 whose voltage and current are respectively represented as a heart and a heart, and the second power source 104 uses a solar cell 502 whose voltage and current are respectively represented as Γρν. And /PV, the power storage device 105 uses a battery 503 whose voltage and current respectively represent ΓΒΑΤ&/ΒΑΤ, the voltage on the DC bus 1014 is 匕, and the current flowing through the DC load 106 is /Λ, and the output AC load The voltage and current on 107 are expressed as κ and ' (, the voltage of the power network 108 is \, the grid-connected current of the mains is expressed as, and the dual-input DC/DC converter 1011, the bidirectional DC/DC converter 1012, DC / AC converter 1013 and power management control unit 102 are respectively one of two-input DC/DC converter embodiments 600, bidirectional DC/DC converter embodiment 700, One example of a DC / AC converter 800 with one of the embodiments Embodiment power management control unit 504

D μ is implemented, wherein one of the power management control unit embodiments 504 is composed of a digital signal processor 505 and a driving circuit 506. This embodiment uses a TMS32〇F2812 digital signal processor 505 produced by Texas Instruments. To feedback the system input/output voltage and current signals, the power management control method 201 generates power commands for each input/output power source and a pulse width modulation signal 507 to control each power converter in the system. In one of the embodiments of the intelligent hybrid power conversion control system 500 of the present invention, the circuit architecture of one of the two-input DC/DC converter embodiments 600 is shown in FIG. 6 15 201041267, and the embodiment of the converter is first The power circuit 601, the second power circuit 〇2, the active clamp circuit 603, and the full bridge circuit 6G4 are composed of one of the fuel cell or the solar cell 502 of the input power source, or the power management control Method 2 (M) For the purpose of adjusting the output load and saving energy, if the input power supply is not to output power, the first power off (6) or the second power switch (3⁄4) can be cut off to complete the power cutoff. DC/DC converter embodiment - 6GG circuit operation mode is as follows: source circuit _ and second power supply circuit 602 mainly through the switching of the first switch (4) and the second switch (6), the fuel cell 501 and the solar cell 5 〇 2 The electric energy in the form of a voltage source is converted into a first inductor current (4)) and a second inductor current (4)) respectively, and then switched by a switch of the full bridge circuit to convert into an alternating current. Through the boosting of the isolation transformer (7;), the timing is applied to charge the capacitor (c^) of the direct-collecting machine row 1014 and provide energy to the output DC load (also) Tiandi turtle current and second inductor current (U through The isolation transformer (7;) rises the process t, because the isolation transformer (7;) exists _ inductance, the inductor current can not be immediately transmitted to the isolation transformer (7;), so the first switch (4) or the second switch (6) parasitic capacitance is charged The parasitic capacitance value of the '-like switch is reported to be small, causing the electric (four) wave '(four) switch to cause damage when the switch is turned off'. Therefore, the double-input DC/DC converter embodiment of the -6GG plus active clamping circuit 6G3 solves this problem. The problem is that when the switch first-on_) or the second switch w is turned off, the first inductor current (6) or the second inductor current (6) can be charged by the clamp switch (known) parasitic diode to clamp the clamp capacitor (6), which can effectively clamp (4) Turn off the voltage and avoid the occurrence of a surge phenomenon, and then turn on the (4) switch (6) to conduct the power stored in the clamp capacitor (Cc) through the isolation transformer (7) to the 16 201041267 DC bus 1014; the dual input DC / disclosed in the present invention One of the stream converter embodiments 600 successfully achieves the purpose of dual input power DC power conversion, and has the characteristics of electrical isolation and continuous input current, and the circuit structure can also reduce system cost. Very suitable for high performance clean energy distributed power generation system. In one of the embodiments of the intelligent hybrid power conversion control system of the present invention 500, the circuit architecture of one of the embodiments of the bidirectional DC/DC converter 700 is shown in FIG. 7, and the embodiment of the converter uses a conventional boost/ The step-down bidirectional DC/DC converter, the battery 503 can connect the power of the battery 503 with the DC bus '1014 through the converter, according to the requirements of the power management control method 201, the step-up/step-down type The DC/DC converter can charge the battery 503 in a step-down operation mode, or in the independent power supply operation, when the fuel cell 501 and the solar cell 502 are insufficient to supply the load, the battery 503 is converted into the high voltage DC current in the boost operation mode. Row 1014 is then converted to an AC power supply output AC load 107 for use. The traditional step-up/step-down bidirectional DC/DC converter has the problem of diode reverse recovery current and the effect of non-flexible switching. It is generally the most problematic for its poor conversion efficiency and high current surge. Therefore, one of the embodiments of the bidirectional DC/DC converter 700 of the present invention is designed as a Synchronous Conducting Mode (SCM), so that the third inductor current waveform is a sawtooth wave crossing the zero point, and the battery 503 is charged and discharged. In the operating state, both switches in the converter have the effect of switching on and off zero voltage switching, and avoiding the reverse recovery short circuit current phenomenon of the diode, improving the conversion efficiency of one of the two-way DC/DC converter embodiments 700 And stability. In one of the embodiments of the intelligent hybrid power conversion control system of the present invention, the circuit architecture of one of the embodiments of the DC/AC converter embodiment of the present invention is shown in Fig. 8, due to the full bridge DC/AC converter. The circuit dynamic model is clear, and a more complex intelligent control method can be realized to achieve a good output AC sinusoidal power supply, which is controlled by a commonly used Sinusoidal Pulse-Width-Modulation (SPWM) technique. The present invention employs this converter as one of the DC/AC converter embodiments 800. The converter uses DC bus 1014 voltage (F&) as the input power, and the output can be cut off or turned on by the grid switch (\) according to different loads and power conditions, so that it operates independently. Mode or mains grid-connected mode; in independent power supply mode, the converter output sinusoidal voltage specification, generally refer to IEEE Std. 1547, must comply with the total harmonic distortion within 5% of the harmonic control specification, and this implementation For example, the output sinusoidal voltage specification satisfies the AC output voltage stability UOVrms (±1%), the frequency and stability of 60Hz (±0.5Hz), the voltage waveform is sine wave and the output voltage total harmonic distortion is controlled by voltage control method. %, and supply AC load 107 (heart) with this output voltage (V.); in the grid-connected mode, if it can be in phase with the power network voltage (vg)

The current of D is fed into the mains to achieve the effect of grid connection of the unit power, which can effectively reduce the generation of virtual power and improve the energy use efficiency. In this embodiment, the current control mode is used to make the grid-connected current (^) phase and The power factor of the mains voltage (') phase is above 0.98, and it also has good power quality in the grid-connected mode of the mains. Power management control is widely used in power electronics applications, such as output voltage stability and power quality improvement, maximum power capture control of solar cells and wind turbines, application of battery quick chargers, and deployment of multiple input energy sources. Need power management control system, especially for multi-input power supply regulation 18 201041267, due to several goals at the same time, such as DC bus voltage stability, control of input power according to different load conditions, converter unit power Grid-connected, etc. Therefore, the power supply side of the power supply needs to be controlled by current, and the function of stabilizing the voltage is controlled by voltage. In addition, it is necessary to understand the state of the voltage range of the input power supply, and the traditional analog circuit is combined. The control architecture has been unable to meet the requirements of the multi-function, and it is less flexible. Therefore, the power management control method 201 disclosed in the present invention uses the digital signal processor 505 as a power management control unit. One of the 504 main cores, this approach is stunned It has become the mainstream of current research and development trends and applications. When the system is in the mains grid-connected mode 206, the grid-connected switch (\) will be turned on. When the system power supply is insufficient, the power will be supplied by the mains. If the system generates more power than the load, the excess power unit will be fed. Incoming to the city, indirectly reduce the electricity bill; when the mains fails, the power supply is dangerous, and the system is damaged. Independent power supply mode 205, powering the load. this

D power management control method 201 design criteria is to avoid the additional charge and discharge times of the battery 503, resulting in energy consumption during the excess energy conversion process, thereby improving the overall efficiency of the power conversion control system, so the battery 503 power supply is only used for the fuel cell 501 In the startup transient period and the independent operation mode, when the capacity of the DC load 106 or the AC load 107 is greater than the power generation capacity of the fuel cell 501 and the solar cell 502, the fuel cell 501 and the solar cell 502 are simultaneously powered by the battery 503, but when the battery 503 is over voltage When low, depending on the load situation and the grid connection of the mains, it is automatically determined that the charging energy comes from the fuel cell 501, the solar cell 502 or the power network 108; 19 201041267 On the other hand, since the fuel cell 501 needs to be supplied with electricity during operation Fuel, so its input power is also the main control target, and the fuel cell 501 input power command can be automatically adjusted according to the output load situation, that is, the goal of high-efficiency intelligent power management control can be achieved. In one of the embodiments of the intelligent hybrid power conversion control system disclosed in the present invention, the fuel cell 501 has an input voltage of 23 to 28 V and a rated input power of 500 W. This embodiment uses a programmable DC power supply to simulate fuel. The battery 501 outputs a power curve, and according to the characteristics of the fuel cell 501, it operates in the ohmic linear region, where the output voltage (Frc) and current (/Fe) relationship can be expressed as

Ffc = 28.5-0.22/fc (1) The input voltage 502 of the solar cell 502 is 22~26V, its rated power is 200W, and the DC bus 1014 voltage is designed to be 200V to meet the higher than full bridge DC/AC. The streamer outputs iioV^v peak voltage; in one of the embodiments of the intelligent hybrid power conversion control system disclosed in the present invention 500, the input-output voltage relationship of one of the two-input DC/DC converter D embodiments 600 can be expressed as

Vbus=nkVvc{\~dx) = nkV?YI {\-d2) (2a) ί/j + β?2 — 1 (2b) where 岣 and name represent the first switch (β) and the second switch (* S2) The duty cycle, "for the isolation transformer (2;) turns ratio, A: for the transformer coupling coefficient. To ensure that the circuit operates under safe operating conditions and conforms to equation (2b), consider the worst case scenario where the dual input supply operates at the lowest voltage, Frc = 23V and Fpv = 22V, and the maximum switch duty cycle is preset to 0.7. And assume that the coupling coefficient is 0.96, and the substitution factor (2a) can be obtained as the transformer turns ratio 20 201041267 «>2.84, properly select the transformer turns ratio n = 3.5 to avoid overloading, the duty cycle is too large, causing current ripple Excessive and poor power conversion efficiency. In order to further ensure that the dual input power supply is supplied with power, the dual input power supply operates at the highest voltage and still conforms to equation (2b), considering Ffc = 28V and FPV = 26V, and the equation (2a) finds < = 0.53 and 4=0.56, knowing that the operating condition still satisfies the formula (2b), one of the two-input DC/DC converter embodiments 600 can be effectively operated by the dual input power supply; the active clamp circuit 603 of the power converter , the voltage of all switches is clamped to the clamp capacitor voltage (Frc), and the clamp capacitor voltage is deduced to indicate

Vcc = VbJnk (3) It can be known that the clamp capacitor voltage Fcc = 59.5V, that is, the switches &ampl, &, &, \, *S5, && cutoff voltage clamped at 59.5V, so select the withstand voltage 100V MOSFET IRFPS3810 as a low-voltage side switch; high-voltage side diode A, Z) 2, Wu and 1) 4 cut-off voltage is equal to DC bus 1014 voltage 200V, so the choice of high voltage 300V fast diode SF10 〇 5G; The first power switch (*SP1) and the second power switch (\2) are implemented using a 48V relay to achieve power cutoff and electrical isolation. Passive component specifications are appropriately selected according to the allowable range of voltage and current chopping: first capacitor ς = 2200 / / Ρ, second capacitor (: 2 = 1100, clamp capacitor Cc = 110 / / F, output DC capacitor = 47 /iFx2, the first inductor A = 330 / / H and the second inductor L2 = 160 / / H. Figure 9 shows DC bus 1014 output power 500W, fuel cell 501 output voltage is 23.4V, dual input DC / DC converter One of the embodiments 600 operates on the experimental waveform of the fuel cell 501 in a separate power supply mode: (a) represents each switch drive signal voltage waveform; (b) represents the first switch drive signal 7;, the first inductor current core, 21 201041267 a switching voltage and a first switching current, before the first switch 4 is turned on

Switching power (four) to zero volts, so the switch conducts the characteristic of zero voltage switching' and the voltage is clamped to the clamp capacitor voltage L when U is cut off, which effectively improves the switching voltage surge caused by the leakage inductance of the transformer; (4) indicates the first switch drive signal I clamp capacitor capacitance clamp voltage %^ and _switch current ', the capacitor voltage L is fixed value and is consistent with the designed clamp voltage 59.5v, all low-voltage side switches are clamped to this voltage value when cut off, clamp switch current . Before the switch is turned on, it is a negative 'clamp switch'; when it is turned on, it has the characteristic of zero voltage switching; (4) means the first switch drive signal 7; the isolation transformer primary side current i the third switch voltage ^ and the third switch current', the isolation transformer When the primary current 'is positive', when the switch & and the V current is negative, the voltage is boosted by the open (four) and & and converted to the high voltage DC bus 1 () 14 power supply; (e) indicates the first switch Drive signal ^, DC bus voltage 匕, the first - diode voltage ~ and the - diode current ^ DC bus bar electric Shu (10) stable output fine v and the diode has no reverse recovery current problem. Figure 1A shows the DC bus output power 7 guess, the fuel cell 5〇1 output voltage 23.3V and the solar cell 5〇2 output voltage 22 ιν, one of the two-input DC/DC converter embodiments_operating on the fuel cell 5 〇1 and solar cell 5〇2 The experimental waveforms under the power supply mode: (8) indicates the waveform of each switch drive signal; (8) Table t the first switch drive signal K, the first inductor current U, the switch «W乂 and the switch The current, _, is shown in the figure as the first-inductor current L is continuous, the first switch in this mode of operation is turned on with zero power (four) for the characteristics, and the first switch (four) stop voltage is sweetened to the clamp capacitor voltage L, effective Improve the transformer leakage inductance caused by the switch 22 201041267 voltage surge phenomenon; (C) indicates the first switch drive signal stone, the second inductor current L, the first switch voltage and the second switch current 'shows the second inductor current L continuous, the second switch is also turned on in this mode of operation with zero voltage switching characteristics. When the voltage is cut off, the voltage is clamped to the clamp capacitor voltage factory cc, effectively improving the leakage inductance of the transformer. Phenomenon; (d) indicates the first switch drive signal 7; clamp capacitor voltage Fcc, clamp switch voltage % & redundancy and clamp switch current sink, clamp capacitor voltage Fcc is fixed, and the clamp voltage is designed to be 59 5V Correspondingly, all low-voltage side switches are clamped to this voltage value when they are turned off, the clamp switch current is negative before the switch is turned on, and the clamp switch & switch has zero voltage switching characteristics; (e) indicates the first switch drive signal 7i, Isolation transformer - secondary current ', third switching voltage ^ and third switching current 'shows the third switching current in S1 ^ through the transformer to the DC bus 1014, and the inductor current can be in the switch ^^^ & At the same time, the conduction loss is reduced by shunting; (1) indicates the first switch drive signal) S straight muscle sink / claw row voltage, the second diode voltage ~ and the third diode current L, the straight ship flow chart in the figure The voltage L is stable and the 2 is required, and the diode has no reverse recovery current problem. In the smart hybrid power conversion control (4) embodiment of the invention, the input voltage of the battery 5〇3 is 96V±1〇%, and the rated discharge power of the bidirectional DC/DC converter embodiment is -700. And the charging power is designed to be 5〇〇w, and the relationship between input and output voltage can be expressed as

VbuS = VB^l{\-dd) (4) where "representing the lower arm switch (6) duty cycle respectively, since the upper arm switch (6) and the lower arm 23 201041267 switch (6) are both subjected to the DC busbar 1〇14 voltage d), therefore The #switch (brother) and lower arm switch (&) select the pressure-resistant m〇sfet 264. The passive component specification is appropriately selected according to the allowable range of voltage and current chopping, so that the second inductor current can still operate in the discontinuous region at the most heavy load, and the synchronous conduction mode can be performed, so the third capacitor ς=2 宁 and The third inductance = 96 / / Η. Figure 11 shows the output voltage of the battery 5〇3 when the output power of the DC bus 1014 is 5〇〇w, one of the embodiments of the bidirectional DC/DC converter, the operation waveform of the battery 503, and the (4) indicates the lower arm. Switch drive signal l, upper arm switch drive signal 7; and third inductor current L, the figure shows the third inductor current h side, the bottom # switch drive signal [positive value when conducting, _ guarantee bidirectional DC / DC converter implementation For example, the operation is in the synchronous conduction mode; (9) indicates the characteristics of the lower arm switch drive signal, the upper arm open signal _ motion signal c, the lower arm _ voltage, and the lower arm switch current lDSM under the switch mode. And under the 'switch & cut-off voltage clamped at 2〇QV, the same as the DC bus voltage L; (4) Table # switch drive signal, upper arm switch drive signal [, upper arm switch voltage coffee, and on the 'open eye electricity' ;Άα 'The upper arm switch is also switched to zero voltage switching in this mode of operation. 'The voltage is also clamped to the V at the cut-off voltage, which is the same as the DC bus voltage L, and has not been conventionally turned off for synchronous rectification. Therefore, the reverse polarity of the diode is excessively generated; (4) the lower arm switch drive signal d-stream bus voltage L, the DC bus voltage AC component U, and the third inductor current diagram show the DC bus voltage ^ stable The output is 2, and its voltage chopping peak 24 201041267 1.2V accounts for 0.6% of the DC bus voltage (= 200V), and the DC bus voltage is stable. Figure 12 shows the experimental waveform of the battery 5〇3 voltage 96.5V when the input power of the DC bus 1〇14 is 52〇w, and the operation of one of the two-way DC/DC converters in the battery 503 charging mode: (a ) indicates the lower arm switch drive signal, the upper arm switch drive signal 7; and the third inductor current L. The figure shows the third inductor current y on the upper arm switch drive signal 7; when turned on, it is a negative value to ensure bidirectional DC/DC conversion. One of the device embodiments 700 operates in a synchronous conduction mode; (b) represents a lower arm switch drive signal, an upper arm switch drive signal 7; a lower arm switch voltage and a lower arm switch current h'srf, and a lower arm switch conducts a zero voltage Switching characteristics, and the lower arm switch & cut-off voltage clamped at 2GGV' is the same as DC bus voltage l; (4) indicates lower arm switch drive signal, upper arm switch drive signal [, upper f switch voltage and upper arm switch current La, upper arm The switch conduction also has the characteristics of zero voltage switching. The voltage is also clamped at 2000V when turned off. 'The same as the DC bus voltage l, and there is no traditionally used switch for synchronous rectification. The phenomenon that the reverse recovery current of the diode is excessively generated occurs; (4) indicates that the lower arm switch drive signal Trf, the DC bus voltage n flow converges the voltage AC knives Piffle, and the first inductor current L, and the DC bus voltage is shown in the figure.匕^ The output is stable at 200V, and its voltage chopping peak is 13v, which is about 0.65°/ of the DC bus voltage d = 2_). 'The DC bus voltage is steady. The intelligent hybrid electric_switch control (four) system disclosed in the present invention is provided in the 'straight/parent flow converter embodiment-8-8', & 2_DC bus voltage ^ is supplied, independent In the power supply operation mode, the AC output voltage (4) is designed as 25 201041267 110Vrms/60Hz 'When the voltage is turned on (wj is controlled, when it is in phase with the mains network voltage (^) and the same size, then the grid switch (&) The power supply is connected to the mains network and connected to the grid. In this embodiment, the unipolar (Unipolar) pulse width modulation switching method is used to control the output voltage. The dynamic model of the full bridge DC/AC converter can be simplified and expressed in h. 〇=-^IL0)vo+{llL〇)Vbusdi t = (UC〇H/(RacCJ (where 4 represents the duty cycle of the converter switching, & represents the AC load 1〇7. Since the seventh switch (*s7 ), the eighth switch (6) 'The ninth switch (&) and the tenth switch (~) are required to withstand the DC busbar (4) at the cut-off. Therefore, the switch selects the MOSFET IRFP240 with a withstand voltage of 250V, and the grid-connected switch (6) adopts u〇Va. The relay is fully realized, and the whole bridge is powered by the grid. The flow/AC converter dynamic model can be further simplified as follows: ❹ From this equation, it can be known that by controlling the duty cycle (4) of the converter switching, the current flow can be determined to achieve the power required to charge the battery 503, or Input excess power is fed into the mains network 1〇8. Passive component specifications are appropriately selected according to the criteria for filtering high-frequency components such as τ: output DC capacitor k-nine inductor I. = 4.2mH and output filter capacitor c.=3〇 ^f. Figure 13 shows a tf U-power hybrid power conversion control system embodiment _, DC / AC implements _ - _ operating in independent power supply mode, DC sinking voltage ^, parent flow Output voltage & and output filter inductor current ^ 26 201041267 Experimental waveform: (a) shows the experimental waveform of AC output power 240W, where the DC bus voltage is stable at 200V continuous supply converter, and the AC output voltage V. 110.4Vms/60.1Hz, the total harmonic distortion of the voltage is measured as 1.5%; (b) The experimental waveform when the AC output power is 670W, at this time, the AC output voltage V is 110.2Vrms/60.1Hz, and its voltage total harmonic Lost The measurement is 1.7%; (c) shows the experimental waveform when the AC output power is 1020 W, at which time the AC output voltage % is 110.4 Vrms/60.0 Hz, and the voltage total harmonic distortion measurement is 1.9%. Figure 14 shows the wisdom of the present invention. In one of the embodiments of the hybrid power conversion control system, one of the embodiments of the DC/AC converter 800 is operated in the grid-connected mode of the mains, and the mains voltage and the output filter inductor current L are fed into the commercial power network 220W. Waveform, the figure shows that the filter inductor current L is close to the same phase as the mains voltage vg, and the grid-connected current RMS and grid-connected power factor measurements are 2.lArms and 0.981, and the unit common cause is successfully connected to the grid. Figure 15 is a diagram showing an embodiment of the intelligent hybrid power conversion control system of the present invention. In one of the embodiments of the DC/AC converter, the AC output voltage V is operated when the independent power supply mode is switched to the commercial power grid-connected mode. And the transient response experiment waveform of the mains voltage vg: (a) indicates that the grid-connected switch is turned off and converted into an independent power supply operation mode in the grid-connected operation mode, and the operation point of the grid-connected switch is set to the mains voltage. The zero crossing point can effectively avoid the short circuit current and the surge voltage caused by the switching, and can shorten the transient time. The transient switching time is about 5ms; (b) indicates the AC output voltage V in the independent power supply operation mode. . When the phase is the same as the mains voltage vg, the grid-connected switch & is turned on and converted to the mains grid-connected operation mode, and the transient switching time 27 201041267 is about 2 ms. Although the present invention has been described above as a better _ (four), it is not (d) The scope of protection of the present invention is subject to the definition of the patent application, which is defined by the appended patent application, and the scope of the invention is not limited to the scope of the invention. [Simple description of the map]

1 is a system architecture of a "smart hybrid power conversion control system" of the present invention. FIG. 2 is a control flow of a power management control method in the "smart hybrid power conversion control system" of the present invention. FIG. 3 shows the present invention. In the "Smart Hybrid Power Conversion Control System", the independent power supply mode control flow chart of the power management control method is not in the "smart hybrid power conversion control system" of the present invention, and the power supply management control method is used for the power supply grid connection mode control flow. 5 is a system architecture of one embodiment of the "smart hybrid power conversion control system" of the present invention. FIG. 6 is not a dual input DC/DC converter in one embodiment of the "smart hybrid power conversion control system" of the present invention. Circuit structure 7 of the embodiment 1 1 1 shows the electric 28-way architecture of one of the bidirectional DC/DC converter embodiments in one of the embodiments of the "smart hybrid power conversion control system" of the present invention. FIG. _ Shi X7F invented the "smart hybrid power conversion control system" in the real & example, DC / AC converter implementation One of the circuit architectures, Figure 9 - Sounds && Ding ^ Ming "Smart Hybrid Power Conversion Control System" one of the practical examples of the 'dual input DC / DC converter' In the fuel cell single-supply mode, the experimental waveform is shown in Figure 1.0 矣 + 士 & „ - 八务明智能-type hybrid power conversion control system. In the J, one of the two-input DC/DC converter embodiments operates on Fuel cell and solar cell - experimental waveform in the power supply mode Fig. 11 shows one of the embodiments of the "intelligent hybrid power conversion control system" of the present invention, one of the bidirectional DC/DC converter embodiments operating in the battery discharge mode The experimental waveform 1 is shown in Fig. 12. In the embodiment of the "smart hybrid power conversion control system" of the present invention, the experimental waveform of the embodiment of the bidirectional DC/DC converter operating in the battery charging mode is shown in Fig. 13. In one of the silver embodiments of the "smart hybrid power conversion control system" of the present invention, one of the DC/AC converter embodiments operates in an independent power supply mode. FIG. 14 is a diagram showing an experimental waveform of an embodiment of a DC/AC converter according to an embodiment of a DC/AC converter according to an embodiment of the present invention. FIG. 14 is an embodiment of a DC/AC converter. = The invention shows the "intelligent hybrid power conversion control H" in the "DC / AC converter" embodiment - operating in the independent power supply mode and the mains grid mode switching, the experimental waveform of the transient response [main components DESCRIPTION OF SYMBOLS 101: Intelligent hybrid power conversion control system 102: Power management control unit 103: First power supply 104: Second power supply 105: Power storage device 106: DC load 107: AC load 108: Power network 109: Power network 1010: Signal Network 1011 · Dual Input DC/DC Converter 1012: Bidirectional DC/DC Converter 1013: DC/AC Converter 1014: DC Bus 201: Power Management Control Method 30 201041267 205: Independent Power Mode 206: Mains Grid-connected mode: Grid-connected indicator • : Stop indicator: Initial state of charge state • SOC: Charge state • Charge state minimum 〇 P3/ : Power reserve Device virtual charging power command exhaust min: power storage device minimum power ' β: system overall output power 4: DC load power consumption 圪: AC load power consumption Ρ / : second power power command corpse 2 ΜΡΡΤ : second power supply maximum draw power 〇if : First power supply command 矸 max •• First power maximum power: Mains grid-connected power command 31

Claims (1)

201041267 VII. Patent application scope: 1. A smart hybrid power conversion control system, which includes a power management control unit: connected to each power converter by a signal network to manage and control each power converter and input/output power ; a first power source: after the power conversion, to provide system output power, can also charge the power storage device; a second power source: after the power conversion, to provide system output power, can also be stored in the power supply Device charging; a power storage device: used to provide system output power after power conversion, or 接受 accept power to charge the device; a dual input DC/DC converter: converts first power and second power simultaneously For DC bus power, one of the two power sources can be separately converted into 'DC bus energy; One bidirectional DC/DC converter: converts power storage device power into DC bus energy, or DC bus energy Charging the power storage device through this bidirectional DC/DC converter, this bidirectional DC/ The flow converter has the function of two-way power flow; a DC bus: DC bus energy can supply DC load, or can be converted into AC power by DC / ^ AC converter, supply AC load or parallel power supply with power network, DC The bus power can simultaneously charge the power storage device through the bidirectional DC/DC converter; a DC load: a load using a DC bus high voltage DC power supply; a DC/AC converter: converts the DC bus power into AC power, Supply AC load or supply power in parallel with the power network, or return the power network power to the DC bus bar by rectification, the function of the DC/AC converter bidirectional power flow, an AC load: use DC/AC converter output AC power load; a power network: a mains power network; a power network: each power converter is connected to the input / output power and DC bus 32 201041267 power network; a signal network: each power converter a network of connection numbers; The control signal Γΐ Γΐ 'ΓΓΓ 控制 控制 控制 控制 ΓΓΓ ΓΓΓ ΓΓΓ ΓΓΓ ΓΓΓ ΓΓΓ ΓΓΓ ΓΓΓ ΓΓΓ ΓΓΓ ΓΓΓ ΓΓΓ ΓΓΓ ΓΓΓ ΓΓΓ ΓΓΓ ΓΓΓ ΓΓΓ ΓΓΓ ΓΓΓ ΓΓΓ ΓΓΓ ΓΓΓ ΓΓΓ ΓΓΓ ΓΓΓ ΓΓΓ ΓΓΓ ΓΓΓ ΓΓΓ ΓΓΓ ΓΓΓ ΓΓΓ ΓΓΓ ΓΓΓ ΓΓΓ ΓΓΓ ΓΓΓ ΓΓΓ ΓΓΓ ΓΓΓ System:, system power supply and power supply - power supply m == DC converter system architecture; third = system = Ο Γ Γ Γ 第四; fourth point, system output can be DC sink: upper S load 'and straight W AC converter n output AC load, can also be connected with the power network; fifth, the system 盥 power network ° power conversion after the power storage installed if parallel power supply, the power network 2' ΐΓ ίί profit range item 1 The smart hybrid power conversion control system, wherein the m source can be rectified into a DC power source for a DC power source that uses fuel to generate electricity or a power source that uses fuel to generate power as a power supply. 3 · ΐ ί Please select the intelligent hybrid power conversion control system of the first patent range. The If source can be regarded as a power supply for solar cells, DC wind turbines or AC wind turbines. 4. Please apply the intelligent hybrid electric_change control system of the first item of patent 1. The source storage device can be a secondary battery or an ultra-capacitor, which can be stored and supplied as a power source. 5. t Apply for the intelligent hybrid power conversion control system of the first item. The straight/parent converter can be a single-phase converter or a three-phase converter. 6·=Application for the intelligent hybrid power conversion control system of the patent item fifteenth item i, wherein the power network can be a commercial single-phase power supply or a commercial three-phase power supply, and is connected in parallel with the system output for power supply. 7. The smart hybrid power conversion control system according to the third aspect of the patent application, wherein the control flow of the power supply control unit is a power management control method, and the method is used to generate power control commands for each input power source, To effectively manage the input/output power of the smart power conversion control system of the 201041267 hybrid power conversion control system, the main program steps include: Step 202: When the power management control method is started, first set the grid connection indicator to 0, indicating that the system is preset to Independent power supply mode, and set the shutdown indicator to 〇, indicating that the system is in the normal operating state, and then proceeding to step 203; step 203 is to estimate the initial value of the charge state of the power storage device, and the charge is known by the voltage of the power storage device. The initial value of the state is followed by step 204; step 204, determining whether the grid-connected indicator is 1, if yes, proceeding to step 206; if not, proceeding to step 205; step 205, the system operating in the independent power supply mode, and then performing step 207 Step 206, the system operates in the mains grid-connected mode, and then proceeds to step 207; step 207 The state of the power storage device state, by the real-time current-to-time integration of the power storage device, divided by the total capacity of the power storage device, plus the original state of charge, can estimate the current state of charge of the power storage device, this decision - expected The charge state of the power storage device is maintained at a preset maximum value, and the output is used in the independent power supply mode under the heavy load condition and the system startup condition. Therefore, after the charge state of the power storage device is known, the charge state of the power storage device can be controlled or adopted. The linear correspondence relationship is calculated, and the power storage device virtual charging power command is calculated, and then the step 208 is performed; in step 208, the power network state is determined, and the AC voltage is determined by returning the mains voltage and setting the peak size range in the normal state. Whether the peak size is normal, and the phase angle of the electric power is estimated by the phase-locked loop control. When the magnitude of the mains voltage is normal and the phase angle of the mains voltage is successfully estimated, the grid-connected indicator is set to 1. Otherwise, set the grid-connected indicator to 〇, and the receiver proceeds to step 209; step 209 , to determine whether the shutdown indicator is 1, if it is, the current input power sum is not able to supply the sum of the load demand power, forcing the power management control method main program to end and the intelligent hybrid power conversion control system to stop, if not, on behalf of the smart The hybrid power conversion control system is in a normal operating state, and then proceeds to step 204. 8. The power management control method of claim 7, wherein the step 205 independent power supply mode subroutine execution step comprises: step 301, the grid switch is turned off, and the system outputs the AC power and the city power, and the receiver is disconnected. Go to step 302; Step 302, feedback the system input/output voltage and current, and calculate the overall system output 34 201041267 Tendency = 2 power step rate is equal to DC load power consumption and AC two power supply voltage and current, judge the first: electricity: In the second step 303, according to the feedback system, the second power source is determined, and the second power is the maximum power. The second power source is the maximum power _ ^ _ ^ two power sources determine the second power source maximum _ the receiver enters the light step Mei Step 306, the storage device virtual charging power command: and the big: = two out = and the power supply * no, then proceed to the steps: step 3 〇 wide; two = sudden wide ' = = in the body; _ and the electric heart power command sum After that: the device virtual charging control method main program; step 308, when the first electrical power back to the second power supply maximum operation; =;;; =:? = and then, if the power storage device virtual charging power command The u9 alone is not, then the sum of the maximum power of the step and step is greater than the sum of the operating power and the first power electric power command, 'the virtual device is filled with the thunder and the other person is 16", the first positive body output The power and power storage device virtual power is taken... The control method is the sum of the power of the main single source and the maximum power of the first power supply: less than the maximum power of the power supply, and the sum of the second power supply and the overall output power The difference ' is set to the electric power command, then step 3〇14; step 3〇5, when the first power supply is not available, the second power command is set to zero, and the receiver 35 201041267 proceeds to step 3011; step 3011 Determining whether the maximum power of the first power source is greater than the sum of the overall output power of the system and the virtual power charging command of the power storage device. If yes, proceed to step 3012. If not, proceed to step 3013; in step 3012, the first power source in the independent power supply mode. When the maximum power is greater than the sum of the overall output power of the system and the virtual charging power command of the power storage device, the first power command % is set. For the system's overall output power and power storage device virtual charging power command 'and, then end the independent power supply mode flow, return to the power management control method main program; Step 3013, in the independent power supply mode, the first power supply maximum power is less than the system's overall output power When the sum of the power storage device virtual charging power command is reached, the first power command is set to the first power maximum power, and the power storage device virtual charging power command is set to the difference between the first power maximum power and the overall system output power. Then, step 3014 is performed; step 3014, it is determined whether the power storage device virtual charging power command is greater than zero, and if so, the power storage device virtual charging power command is positive, indicating that the system has sufficient input power to charge the power storage device, and then terminate the independent The power supply mode process returns to the power management control method main program. If not, proceed to step 3015; in step 3015, the power storage device virtual charging power command is negative, that is, when the power storage device is in a discharging state, the power storage device is in a charge state. Whether the state is less than the minimum value of the set power storage device charge state, and if so, proceed to step 3016; if not, proceed to step 3017; Ο step 3017, determining whether the power storage device virtual charging power command is less than the set power storage device minimum power, In other words, it is determined whether the power storage device exceeds its set discharge maximum power. If yes, proceed to step 3016. If not, the independent power supply mode flow is terminated, and the power management control method main program is returned; in step 3016, the input power power sum cannot supply the load. The sum of the required power and power, set the stop indicator to 1, then end the independent power supply mode flow, and return to the power management control method main program. 9. The power management control method of claim 7, wherein the step 206 of the utility mode of the utility grid connection mode comprises: step 401, the grid connection switch is turned on, and the system outputs the alternating current power and the mains connection, and sets The first power power command is zero, and the process proceeds to step 402. In step 402, the system input/output 36 201041267 voltage and current are fed back, and the overall output power of the system is calculated. At this time, the overall output power of the system is defined as the DC load power consumption. Step 403: Step 403, determining whether the second power supply can be obtained according to the feedback of the second power voltage and current, and if yes, proceeding to step 404; if not, proceeding to step 405; step 404, . The control mode determines the second power command, and sets the second power command to the second power maximum draw power, and the process proceeds to step 406; 'Step 406, determining whether the second power maximum draw power is greater than the overall system output. The sum of the power and the power storage device virtual charging power command, if yes, proceed to step 407, if no Then proceed to step 408; step 407, when the main power is connected to the network mode 0, when the maximum power drawn by the second power source is greater than the sum of the overall output power of the system and the virtual charging power command of the power storage device, the maximum power of the second power source is extracted, minus &quot Go to the overall output power of the system, and then subtract the virtual charging power of the power storage device, and calculate the positive value, set to the mains power grid-connected power command, in other words, the second power supply is deducted from the system's demand. , all feed into the mains, then end the mains grid-connected mode process, return to the power management control method main program; step 408, the mains grid-connected mode, the second power supply maximum draw power is less than the system's overall output power and power storage device virtual charging When the power command is summed, the maximum power drawn by the second power source is subtracted, the overall output power of the system is subtracted, and the virtual charging power command of the power storage device is subtracted, and the calculated negative value is set, and the power supply is connected to the grid power command, in other words, At this time, the second power source is deducted from the power demand of the system, and the power is insufficient. The electric feedback is returned to the system, and then the mains grid-connected mode flow is terminated, and the power management control method main program is returned; in step 405, when the second power supply is not available, the second power supply command is set to zero, and the terminal proceeds to step 409; 409, the utility power grid-connected power command is set to the sum of the overall system output power and the power storage device virtual charging power command. At this time, the utility power feedback power is returned to the system, and then the utility power grid-connected mode flow is returned, and the power management control is returned. Method main program. 37