CIRCUIT FOR CONTROLLING DC BUS IMBALANCE OF ENERGY STORAGE SYSTEM
The present invention refers to power storage system of imbalance monitoring circuit relates to DC bus, device (PCS) and power conversion battery varying the operation frequency of the compressor more specifically a power storage system (ESS) the charge state of a battery cell in the between batteries of that is unlikely to be affected charging imbalance in detail energy to signal a power storage system of DC relates to circuit imbalance monitoring bus. Generally energy storage system (ESS: Energy Storage System) (or energy storage device) is interesting for a battery-electrical energy as necessary after charging the device discharging, a power management system to control the energy power (Power Management System), DC batteries for converting power between AC power system (PCS: Power Conditioning System) device power converter that stores energy and is constituted of battery. Said energy storage device through a predicts a smoothing power peaks, having such output characteristics as a discontinuous a wind and sun of output characteristics for stabilizing, valve is regulated, of a power system capable of purpose: to are utilised. Various purposes applied future power system is ESS which outlook to be applied to, individual site each single purpose but may be applied is ESS, economy and applied in capacity for variable kinds of by considering good on-site ESS a site (park) is device in applied to. The heterogeneous battery and when applied to site a PCS, separately ESS judged whether or not a received channel than to install a system, different video formats from each other into a PCS battery and DC Bus ESS conjunction through the entire is. advantageous in reliability of the system. In addition DC Bus is to improve the voltage and raising the temperature of the power density ESS having a thermal expansion rate similar to an upper part of the, of battery battery management system (BMS: Battery Management System) wig is supposed to be height insulating level due difficulty recently WIPO application of 3-level (level) PCS of wet liquid to flow down. Said 3-level in the case of PCS, current value is not zero, the higher 1000Vdc 2000Vdc (1000Vdc) as 3-level DC voltage (+, GND, -) through converter a system for conversion of AC to the area.. However 3-level of PCS in a state applying a DC Bus and a cathode is provided with an unbalanced between DC Bus of time if it reaches the set temperature (or unbalanced loading), an output voltage of 3-level PCS power the degradation of the quality of the harmonic to be a mobile. Figure 1 shows a neutral point level of the existing method 3-also clampingly multiplex converter (NPC: Neutral Point Clamped) visible form is exemplary. As shown in 1 also NPC (Neutral Point Clamped) 3-level converter, 120 degrees A having a phase difference, B, in converter three C, switch on A (S1, S2) and, switch on B (S3, S4) and C switch on (S3, S4) conductive and the voltage of the same size when 120 degrees 3 having a phase difference on the second output terminal outputs a voltage of DC Bus neutral point (Neutral Point) in Z point DC Bus a does not change holds the balanced to the vector voltage. However either switch on (e.g.: S2 and a S3) the neutral output conductive (Neutral Point) in Z level surface as to output a reference voltage of the voltage amplitude output but 120 degrees phase difference zero (0) and a successful balance vector is is the broken, is value neutral point DC Bus balancing voltage DC Bus is cannot be. While, in the case of the converter conventional, and generates its output voltage to PWM (Pulse Width Modulation) switching method in where it is heated, even in the event of a converter 3-level manner when the PWM, DC Bus unbalanced controlling the voltage of the two switching strategy. Method but the DC capacitor (Cd1, Cd2) ESS in the case of speaker replaces an old battery, connected to the, 0.05-0.5N of alkali, energy method for rating a adjusted upwards due to the presence of an additional problem is the mixed with the previous. cannot be reduced to of lightning countermeasure for aerial. Another of the existing method also Figure 2 shows a 3-level PCS voltage unbalances multiplex a circuit which controls the visible form is exemplary. Also as shown in 2 of the existing method DC Bus voltage unbalances in circuitry that controls the, mass battery if it was not already +DC, -DC, NP (neutral point) the application for a system connected to but not a system, voltage of the bipolar (VC2) voltage of the negative and (VC1) electrically connected between a second terminal. of the diode is imbalance. Also 2 PCS control circuit, asymmetric shown in and switching method (down)/ Boost DC-DC Buck (boosting) by controlling the converter DC Bus voltage unbalances. controlled. Voltage of the negative e.g. (VC1) voltage of the bipolar is (VC2) if not, the mobile, switch S2 and a S4 conductive energy of an energy storage battery (VES) is bipolar capacitor (C2) voltage of the an electrolyte filled of (VC2). rises. Voltage of the bipolar in addition said (VC2) negative voltage of the (VC1) if not, the mobile, switch S1 and S3 conductive energy of an energy storage battery (VES) that of a cathode-capacitor (C1) voltage of the negative is (VC1) in the cylinder by an voltage DC Bus is especially unbalances. Figure 3 shows a device balancing battery SOC using another of the existing method also multiplex of exemplary visible form, plurality of input coupled to a device consisting of a plurality of power converter a plurality battery charging of balancing device exhibit is exemplary. E.g., battery (B0) and a battery (B1) dry washing method of between (L1) using battery and the other said battery (B0) (B1) of the charged amount of the battery by a rope. control the unbalance. Figure 4 shows a battery and power converter also of the existing method of the energy storage system provides one example of coupling device exhibit is exemplary. Also refers to surface 4, upper battery and a lower midpoint between a (Z) impedance (NP) (GND) is connected to memory cell to circuit ground via an, heterogeneous battery is +VDC NP and a, -VDC and a NP, or +VDC between VDC and a may be connected to, NP and a +VDC is PCS level 2, -VDC and a NP, or +VDC between VDC and a may be connected to, 3 level PCS is +VDC, NP, -VDC may be connected to to. Hence a different battery between the PCS and SOC (State of Charge) according to characteristics of NP and a +VDC, NP and a VDC or which has a weight corresponding to weight is provided with an unbalanced electrically connected between a second terminal. Said 2 level converter in to create the AC output in the case of, + level and-level, + level and NP level, so that utilizing level NP-level and, AC output characteristics influenced by the unbalanced of the battery is divided by the barrier rib, in the case of converter 3 level AC output utilizing level NP thereby driving the, battery AC output is introduced. a great impact on. In the case of level converter said 3 thus, according to method switching PWM NP direction and-unbalance is level, typically NP intermediate level voltage VDC voltage level PWM converter such that the switching circuit portion switches NP voltage to control. In addition DC Bus or DC link stage in the case of the converter associated with the capacitor, unbalanced according to energy is large not as possible to the method but, unbalanced load or PCS is imbalance disposed ESS system a is associated, of energy for fundamental the countermeasure against is the which are not easily, for the separate DC Bus try to remove the imbalance voltage between a the copper ion is.. In other words, 4 also said battery pack, such as the battery shown in method eliminating unbalanced according to DC voltage and if the battery is of PCS respective property (+Vdc, GND, -Vdc) is introduced can be occasionally exasperated by, in unbalanced voltage DC is recent a 3 level PCS which comprises at least three types of output voltage in the case of power the degradation of the quality of the harmonic to be a mobile. The present background of the invention opening patent 10-2013-0110379 25th which technique call (10 October 2013 disclosure, battery charge balancing device and battery charge balancing system) to is disclosure. The present invention refers to said to the discharge of the torch electrode and if a bit in the complimentary created to, heterogeneous battery and power conversion device (PCS) a power storage system (ESS) the charge state of a battery cell in the between batteries of that is unlikely to be affected charging imbalance in detail energy to signal a power storage system of imbalance monitoring circuit DC bus heat exchanger.. According to one aspect of the present invention DC of the energy storage system provides imbalance monitoring circuit bus, DC Bus end (+) is connected to the anode of the (-) battery number 1 which is connected to neutral point end: said neutral point is connected to the (+) (-) end which is connected to the cathode of DC Bus number 2 battery ; (+) of battery said number 1 is one end to the one end is DC-DC converter is coupled to an input stage of a switching box number 1 number 1 reactor; said number 1 switching box to an input terminal of the (+) stage is connected to the (-) end secondary side 1 transformer Isolation one terminal number 1 capacitor; said 1 difference is one end on the lower side and the gearbox output switching said number 1 is connected to neutral point said, secondary side 2 is one end said neutral and said DC-DC converter is coupled to an input stage of a switching box number 2 Isolation transformer; said Isolation transformer at one end other secondary side 2 (+) stage is connected with a switching box 8880 000738888 end a is coupled to an output stage of said number 2 number 2 capacitor; and said number 2 (-) of capacitor is one end to the one end is said number 2 (-) terminal of battery number 2 reactor; characterized in that including a. In the present invention, number 1, number 2 each of the switching box, switching element; said switching element and a diode which is coupled parallel in a reverse direction; characterized in that including a. In the present invention, said switching element, thyristor, GTO, IGCT, IGBT, including at least one of transistor characterized in that. In the present invention, paddy field insulating voltage to maintain ground impedance central point of said memory cell to circuit ground via an is characterised in that it has a the. In the present invention, said number 1 number 1 switching box said Isolation energy of battery and battery said number 2 through transformer, said number 2 switching box said Isolation energy of battery said number 2 through transformer battery said number 1 characterized in that the delivery of the. In the present invention, said number 1 number 2 when more than battery battery and the energy thereof, is On switches are box switching said number 1, number 1 reactor battery of energy is stored in the number 1, said number 1 capacitor stored on the secondary side 2 transformer said Isolation energy is passed said number 2, which is configured to slow or search mode of video tape characterized in that. In the present invention, when said number 1 switch is Off, current battery said number 1 flows through transformer said Isolation capacitor and said number 1, voltage is induced in a secondary side 2 transformer said Isolation the number 2 switching box number 2 diode and the number 2 is deposited in the same reactor energy in said number 2 accumulated energy is said number 2 through diode switching box is configured to slow or search mode of video tape is characterized in that the. In the present invention, neutral point and said DC Bus said Isolation transformer secondary side 2 and an HFO 1 to a common connection coupled between the reactor number 3 ; further includes, in said number 1 switching box, electrical continuity between the switch number 1, number 1 battery, number 1 reactor, switching box number 1, number 3 and a loop formed reactor through the flow of current 1 said number 1 said number 1 switch, electrical continuity between the battery and the energy thereof is stored in reactor number 3 time, SOHO switch is said number 1 when said number 3 and the energy stored in reactor switching box number 2, number 3 reactor, number 2 battery, and a loop formed reactor number 2 through the flow of current 2 battery said number 2 characterized in that filled with. Heterogeneous battery and power conversion device (PCS) the present invention refers to a power storage system (ESS) the charge state of a battery cell in the battery of that is unlikely to be affected between solves the problems of internal pressure of charging imbalance in detail energy outputs a relay driving signal.. Figure 1 shows a neutral point level of the existing method 3-also clampingly multiplex converter (NPC: Neutral Point Clamped) exemplary visible form. Another of the existing method also Figure 2 shows a 3-level PCS voltage unbalances multiplex a circuit which controls the exemplary visible form. Figure 3 shows a device balancing battery SOC using another of the existing method also multiplex exemplary visible form. Figure 4 shows a battery and power converter also of the existing method of the energy storage system provides one example of coupling device exemplary exhibit. Also Figure 5 shows a DC bus of the present invention number 1 embodiment: an of the energy storage system provides exhibit imbalance monitoring circuit is exemplary. Also 6 and also said also shown in Figure 7 shows a 5 imbalance monitoring bus DC of the energy storage system provides to explain the exemplary operation of the pull-up. Also Figure 8 shows a DC bus of the present invention number 2 embodiment: an of the energy storage system provides exemplary exhibit imbalance monitoring circuit. Also 9 and also shown in Figure 10 shows a 8 also said DC of the energy storage system provides imbalance monitoring bus to explain the exemplary operation of the pull-up. Hereinafter, the present invention according to drawing with an reference to imbalance monitoring bus DC of the energy storage system provides the described embodiment of circuit thereby, the cold air flows. During this process drawing or components thickness of the line shown in of sizes, etc. for the sake of convenience and intelligibility of the description is illustrated exaggerated may be proposed. Furthermore, function in a the present invention refers to a terms are terms is defined in consideration of the user that is, operating's intended can be changed as usual or. Therefore such the present definitions for terms throughout the specification based on recorded contents of. to be lowered. Also Figure 5 shows a DC bus of the present invention number 1 embodiment: an of the energy storage system provides exhibit imbalance monitoring circuit is exemplary. Also as shown in 5, the present embodiment: an of the energy storage system provides DC bus imbalance monitoring circuit, battery (Battery 1, Battery 2), reactor (301,303), DC-DC converter (100), DC Bus +Vdc (201) in, neutral point a NP (202), -Vdc (203), and ground impedance (400) includes. Also refers to surface 5, number 1 of the (+) of battery (Battery 1) DC Bus +Vdc (201) is connected to (-) is connected to the neutral point (NP), number 2 the (+) of battery (Battery 2) is connected to said neutral point (NP) (-) of the DC Bus Vdc (203) is connected to. (Battery 1) to (+) of battery said number 1 and number 1 reactor (301) one end of is connected with a, number 1 is one end other switching box (110) is coupled to an input stage of. Said number 1 switching box (110) to an input terminal of the number 1 capacitor (Cap.1) of (-) (+) stage is connected with a transformer Isolation end (130) is connected to one end of secondary side 1. Said Isolation transformer (130) of said number 1 stage another secondary side 1 switching box (110) output of and is connected to said neutral point (NP). Said Isolation transformer (130) is one end secondary side 2 of said neutral point (NP) and number 2 switching box (120) and is coupled to an input stage of said Isolation transformer (130) of number 2 is one end other secondary side 2 of (Cap.2) capacitor is connected to stage (+). Said number 2 capacitor (Cap.2) of said number 2 switching box (-) stage (120) and output of number 2 reactor (303) is connected to one end of. Said number 2 reactor (303) (Battery 2) of the one end other battery said number 2 is connected to stage (-). Said DC-DC converter (100) controls the switching box (110,120), Isolation transformer (130), capacitor includes (Cap.1, Cap.2), said switching box (110,120) each switching element (111,121) and the diode (112,122) includes. Said switching element, a diode, and are connected parallel in a reverse direction. the switching element (111,121) the thyristor, GTO, IGCT, IGBT, includes at least one of layer-transistor. Said switching box (110,120) number 1 during switching box (110) (Battery 1) battery energy of the number 1 Isolation transformer (130) transmits it through (Battery 2) battery number 2. Vice versa said switching box (110,120) during switching box number 2 (120) said Isolation transformer (Battery 2) battery energy of the number 2 (130) transmits it through the battery (Battery 1) number 1. Battery number 1 and number 2 (Battery 1) and said DC Bus of the paddy field insulating voltage battery (Battery 2) to maintain neutral point (202) for ground impedance (400) through the paddy field are connected to. Also hereinafter said shown in 5 imbalance monitoring bus DC of the energy storage system provides also a signal 6 and 7 also described a reference to. Also 6 and also said also shown in Figure 7 shows a 5 imbalance monitoring bus DC of the energy storage system provides to explain the operation of the pull-up is exemplary. Also 5 refers to surface, said number 1 number 2 battery battery (Battery 1) and the energy thereof when more than (Battery 2), also as shown in 6 number 1 switch (111) is On is, number 1 reactor (301) to battery (Battery 1) of energy is stored in the number 1, number 1 capacitor (Cap.1) said Isolation energy stored on the transformer (130) through the secondary side 2 is passed said number 2. charging a battery (Battery 2). Also and as shown in 7 said number 1 switch (111) when Off is, the current (Battery 1) battery said number 1 number 1 capacitor (Cap.1) and said Isolation transformer (130) and allowed to flow through the, said Isolation transformer (130) of the number 2 2 secondary side voltage is induced in a switching box (120) diode (122) through (Cap.2) and is accumulated in a energy in capacitor number 2. In addition in the previous step number 2 reactor (303) a process of a storage element, which said diode (122) through the battery said number 2 is filled (Battery 2). Said number 2 battery (Battery 2) and the energy thereof while said number 1 if the key more than said battery (Battery 1) and operates and vice versa. Also Figure 8 shows a DC bus of the present invention number 2 embodiment: an of the energy storage system provides of exemplary exhibit imbalance monitoring circuit, in said 5, DC Bus neutral point and Isolation transformer to a common connection between the reactor number 3 (302) further includes. Also 8 as shown to the unbalance, and control circuit, also 7 in a drive circuit in which a imbalance monitoring shown in, said number 3 reactor (302) energy through the surface of the silicon delivery performs balancing battery voltage. Shown in 8 also hereinafter said DC of the energy storage system provides also a signal imbalance monitoring bus 9 and 10 also described a reference to. Also 9 and also shown in Figure 10 shows a 8 also said DC of the energy storage system provides imbalance monitoring bus to explain the operation of the pull-up is exemplary. Also 8 with a, number 1 switch (111) in conduction, also 6 as shown in is operation, as shown in drawing 9 1 (loop 1) loop through the flow of current and the energy thereof (Battery 1) battery said number 1 said number 1 switch (111) number 3 time, electrical continuity between the reactor (302) are stored to. And said number 1 switch (111) when SOHO is, also 7 as shown in is operation, also as shown in 10 number 3 reactor (302) and the energy stored in the loop number 2 through the flow of current 2 (loop 2) (Battery 2) fills the energy to the battery. Vice versa said number 2 switch (121) or conduction of the SOHO in, said number 3 reactor (302) and DC/DC converter (100) through said number 1 is charge energy and of said number 2 battery (Battery 2) is filled (Battery 1) battery. Said data are within the lead-in with a circuit configuration simpler relate embodiment through can be only a particular, DC Bus imbalance when applied enlarged ESS future battery unit to perform a voltage control outputs a relay driving signal.. Shown in the present invention refers to drawing at least with reference to thereby, the cold air flows but described embodiment, is an exemplary which purpose: to avoid a, typically encountered in is the state of the art having knowledge of various modifications therefrom grow for other and equalization embodiment styles are discussed that will understand. Technical scope of protection of the present invention thus by claim below will to be determined. Battery 1: number 1 battery Battery 2: battery number 2 Cap.1, Cap.2: capacitor 100 : DC-DC converter 110,120: switching box 111,121: switching element 112,122: diode 130: Isolation transformer 201 : +Vdc 202: neutral point (NP) 203 :-Vdc 301, 302, 303: reactor The present invention relates to a circuit for controlling DC bus imbalance of an energy storage system, comprising: a first battery having a positive (+) end connected to an anode of a DC bus and a negative (-) end connected to a neutral point; a second battery having a (+) end connected to the neutral point and a (-) end connected to a cathode of the DC bus; a first reactor having one end connected to the (+) end of the first battery and the other end connected to an input end of a first switching box of a DC-DC converter; a first capacitor having a (+) end connected to the input end of the first switching box and a (-) end connected to one end of a first side of an isolation transformer; the isolation transformer having the other end of the first side connected to an output end of the first switching box and the neutral point, and one end of a second side connected to the neutral point and an input end of a second switching box of the DC-DC converter; a second capacitor having a (+) end connected to the other end of the second side of the isolation transformer and a (-) end connected to an output end of the second switching box; and a second reactor having one end connected to a (-) end of the second capacitor and the other end connected to a (-) end of the second battery. COPYRIGHT KIPO 2016 DC Bus end (+) is connected to the anode of the (-) battery number 1 which is connected to neutral point end: said neutral point is connected to the (+) (-) end which is connected to the cathode of DC Bus number 2 battery ; (+) of battery said number 1 is one end to the one end is DC-DC converter is coupled to an input stage of a switching box number 1 number 1 reactor; said number 1 switching box to an input terminal of the (+) stage is connected to the (-) stage 1 (Isolation transformer) of the insulating transformer secondary side one terminal number 1 capacitor; said 1 difference is one end on the lower side and the gearbox output switching said number 1 is connected to neutral point said, secondary side 2 is one end said neutral and said DC-DC converter switching box number 2 is coupled to an input stage of an insulating transformer (Isolation transformer); other secondary side 2 of said insulating transformer (Isolation transformer) at one end (+) stage is connected with a switching box (-) end a is coupled to an output stage of said number 2 number 2 capacitor; and said number 2 (-) of capacitor is one end to the one end is said number 2 (-) terminal of battery number 2 reactor; characterized by of the energy storage system provides to a DC bus including imbalance monitoring circuit. According to Claim 1, number 1, number 2 each of the switching box, switching element; said switching element and a diode which is coupled parallel in a reverse direction; characterized by of the energy storage system provides to a DC bus including imbalance monitoring circuit. According to Claim 2, said switching element, thyristor, GTO, IGCT, IGBT, characterized by including at least one of transistor to circuit imbalance monitoring bus DC of the energy storage system provides. According to Claim 1, paddy field insulating voltage to maintain ground impedance central point of said memory cell to circuit ground via an characterized by the bus DC of the energy storage system provides imbalance monitoring circuit. According to Claim 1, number 1 battery energy of said number 1 switching box (Isolation transformer) through said insulating transformer and battery said number 2, said number 2 battery energy of said number 2 switching box through said insulating transformer (Isolation transformer) is transmitted to the battery said number 1 characterized by of the energy storage system provides DC bus imbalance monitoring circuit. According to Claim 1, said number 1 number 2 when more than battery battery and the energy thereof, is On switches are box switching said number 1, number 1 reactor battery of energy is stored in the number 1, said number 1 capacitor energy stored on the secondary side 2 of said insulating transformer (Isolation transformer) is passed said number 2, which is configured to slow or search mode of video tape characterized by of the energy storage system provides to DC bus imbalance monitoring circuit. According to Claim 6, when Off switches are box switching said number 1, said number 1 capacitor and the current battery said number 1 (Isolation transformer) flows through said insulating transformer, said insulating transformer voltage is induced in a secondary side 2 (Isolation transformer) of the number 2 switching box number 2 diode and the number 2 is deposited in the same reactor energy in said number 2 accumulated energy is said number 2 through diode switching box, which is configured to slow or search mode of video tape characterized by of the energy storage system provides to DC bus imbalance monitoring circuit. According to Claim 1, said DC Bus neutral point and said insulating transformer secondary side 2 and an HFO 1 of (Isolation transformer) to a common connection coupled between the reactor number 3 ; further includes, in said number 1 switching box, electrical continuity between the switch number 1, number 1 battery, number 1 reactor, switching box number 1, number 3 and a loop formed reactor through the flow of current 1 said number 1 said number 1 switch, electrical continuity between the battery and the energy thereof is stored in reactor number 3 time, SOHO switch is said number 1 when said number 3 and the energy stored in reactor switching box number 2, number 3 reactor, number 2 battery, and a loop formed reactor number 2 through the flow of current 2 filled with a battery said number 2 characterized by of the energy storage system provides DC bus imbalance monitoring circuit.
