TW588501B - Switching power supply system with power loss detection - Google Patents

Abstract

The object of the present invention is to provide a high-quality and high-efficiency AC power device. The present invention provides a high-quality and high-efficiency AC power device. The AC power device includes a switching inverter for generating the standard signal control of AC voltage, and a power amplifier. The AC voltage outputted from the switching inverter of the AC voltage generating mechanism is overlapped with a DC compensating voltage. This overlapped DC compensating voltage is used as a power amplifier to execute power driving for the output to the load. At the same time, the power loss amount output signal of the power amplifying section of this power amplifier is used as a negative feedback control signal for output to the switching inverter, and the sum of this signal and the standard signal for generating AC voltage is used to control the switching inverter.

Description

V. Description of the invention (1) [Technical field to which the invention belongs] Deformation can provide voltage waves under various load conditions. [Previous technology] Noodles f, high-efficiency AC power supply. On the other hand, the design and development of ΐϊ ΐϊ ΐ equipment and AC / DC conversion devices, such as current loads, and other negative H ^ AC power supplies 4 ′ are used in resistive loads and electrical high-quality AC power to provide less force on the waveform of the power supply. Less alternating current and inverses represented by ^ switch inverters; ^ y bio-amplifier method, with system control :: source device, using power control methods such as transistors, etc .: =; Get the target AC output of electric dust because of AC; power = quality AC! The characteristics of power output, but the disadvantages of low efficiency 1, the power loss is large, and there is a power conversion voltage, which causes the device to achieve maximum output power. In addition, the instantaneous output voltage and; Current: more: DC voltage power supply. The potential difference between the source voltage and the loss of the output voltage and electrical power caused by the history of the L, resulting in: ΓΓ crystals and other control elements ca n’t be reported. “; The phase difference of the state current at the output will become larger, because the wheel output current and the output are large and the power loss of the electric control element will be greater than 588501. V. Description of the invention (2) ___ When connected to a resistive load, the power refers to the current. . Power phase loss, so the power output of the wheel must be greatly reduced. For the methods known to the AC power amplifiers, there are corresponding methods to adjust the AC power supply device for variable control in the traditional technology:; Change the value of the internal DC power supply voltage with the minimum DC power value = DC power house converted into the necessary voltage waveform: Π ΐ: According to the method of AC output power conversion efficiency, etc. 'However, = = = to improve power use The universal method required by the AC power supply device is that when measuring the deformation of the electric hair, it is difficult to maintain a high-quality AC power supply such as M0S-FET or IGBT. After using the device to re-use the flattening wave action, the target AC output voltage is obtained by: = =: = impulse width to obtain efficiency. However, because the power loss of the high-voltage conversion line is small, the rectangular wave power ^ = Occupation, the flattening circuit composed of theft will repeatedly deform the output power or have 3 output powers on the ripple interference. Therefore, the load connected to the output end of the wheel is suppressed and the output power with non-linear load response characteristics is generated. 1 container of flat mines Gula ^ u is an apprentice by the inductor and the electrical output impedance, so it is delivered to the + parent current output, which is difficult to achieve low enough, because the voltage will produce a large electrical waveform distortion. & π @ a Inductive state and valley characteristic characteristic reverse ②Transient response characteristics of the circuit and control system on page 6 5 'Invention description (3) The son-in-law condition produces a large shadow, load impedance and load end Early stomach will ^ various capacitors connected to the AC voltage output terminal when the load bar is switched in parallel, it will have an impact on the characteristics of the switching inverter, resulting in the vibration characteristics of the circuit characteristics 5 f ,,, # The negative feedback frequency band is reduced to extremely low, and the degradation of the feedback characteristics is low, which makes the transient response pressure. In order to make up for this shortcoming, the frequency of the large deformation is increased to the maximum level. Negative feedback lacks the frequency band of A and circuit, and must ensure that the resonant frequency of the circuit is equal to two-half of the flattening of the aforementioned electrical devices and capacitors—the second largest: must be far below the switching frequency band of the circuit. ;. Nyquist frequency (Ny-is " —cy) In Japanese Patent Application Laid-Open No. 8-168267, the use of female |: output: a two-stage instantaneous low-pass filter in the plastic library to improve load deformation and deformation. The power MOS-FET or IGBT can also be obtained when the load is changed. The switch is made into a switching action element to make it follow the action. The power capacity can be reduced by several times. To achieve large power, you must: High equipment; :::;: parallel operation of multiple circuits of the device, and the results, ^ [contents of the invention] the technical problems that the present invention wants to solve

588501 V. Description of the invention (4) As mentioned above, the quality of the South is lost. In contrast, the problem of power conversion efficiency and disturbance is used. This onset is to provide cheap and the present invention to solve the problem. The present invention is to generate a signal voltage of 1 2 at the same time. At the same time, it will also use the application of patent patents 8 and 9 to overlap the exchange formed by the exchange mode. The problem is that the 1st channel constitutes the pursuit of a ripple loss frequency that can be lower than 1 force loss detector force loss, and implements feedback control. It is cheap and high-quality 'uses the output voltage of the power amplifier, but there is electricity Conversion: Rate: Although the disadvantages of the exchange of the exchangeable inverter are reduced, the voltage of the output voltage; the good shape of the skin is to take advantage of the two methods and the ripple has high quality and high efficiency φ, | Use coordinating hands-on father power supply unit. Technical means ^ To achieve the aforementioned purpose, the base is applied to the individual input of the reverse type 4 13 Α ecological 11 and the reverse type of the individual input 4 = it is added to the input of the power amplifier 10 between the first and second items The mechanism uses the voltage 5 of the AC wheel of the voltage type reverse pirate 4 as the direct voltage 1 and L as the power source of the power amplifier 10. = The load driven by this device 4 will be used as the success rate amplifier 10, and the voltage waveform will not change when switching the inverter 4. The wave interference of the power amplifier composed of multiple amplifiers will be greatly reduced, so the switching type The inverter 4 is the AC power source of the parent inverter. In addition, by using 14 to detect the electricity δ of the power amplifier 1 q via the feedback h 5 tiger 1 5 as another control input signal of the parent inverter 4 by adding such a mechanism, it can achieve more and higher efficiency than traditional devices. AC power supply unit.

588501 V. Description of the invention (5) The effect of the present invention is to compare the effect number of the previous technology with the 月 Γi effect, which can use the switching inverter method and power amplification to create the new effects described below, but also ensure the advantages of the a And make up for the shortcomings of the two. The composition of the AC output power of the rate amplifier is based on the load resistance of the switching inverter and the switching inverter: = = = Connected: The various load resistance of the AC power supply device In terms of other effects, the ripple voltage removed by the switching inverter can also be used (Power SuDDlv hand-amplified power supply voltage rejection ratio ^ A ^ i; P ^; lej: Ctl〇n_Rati〇: 、 The dictation effect is greatly removed. The same signal, signal ratio, deformation rate, and low output: electricity to ^ pressure center. There is a large output ripple electricity. Without the use of large power :: "type inverter, It can be dealt with in large-scale communication situations. The following is a description of the implementation mode of the present invention with reference to the drawings. The first picture is the fifth, the description of the invention (6) The 4th type of commutator inverter of the scope of patent application for the invention The traditional block diagram is only = 1, and the block diagram is omitted. Replace it with an AC inverter inverter circuit to form a DC voltage rotor 2 and 3 to supply a DC voltage. ^ $ Source 1 will output the power input terminal generator 11 Reference signals such as signal 12 and electric f: 3 voltage are generated When you deposit money, its output power = the large power current of output signal 13 is output to output d: the input signal is proportional-heart = = is caused by one of positive voltage + Vdc and negative power, and directly from the L power source And it is connected in series with the AC output voltage of 6. ". VacK ° ^ output terminal 5, output terminal of DC auxiliary power supply 7 and f will be output to + ^ ^ / output terminal of DC auxiliary power supply 8 9, ^ ϋ -VW, π will be output to the output terminal of the DC auxiliary power supply, and the output terminal 6 of the working state 4 is used as the common line to provide the work voltage. The power amplifier 10 series uses the aforementioned DC auxiliary student :: η 输 Ϊ 螭 子 9 The supplied voltage is used as a power source, and the output signal 12 which is a quasi-signal to 11 is connected to the control input terminal, and the linear power amplifier with a voltage amplification factor is executed to output the power to the output terminal 16, The load of 17. The power loss detector 14 is a circuit that can detect power loss. The aforementioned electrical loss is generated by a power transistor and a voltage control element such as power Mos-FET, and the aforementioned power transistor and power Mos —FET, etc. The voltage control element is used in the power amplifier stage of the internal circuit of the power amplifier. ^ The second diagram is an example of an implementation circuit of the switching inverter 4 in the first patent application scope. The drawings are for the purpose of explaining the operation of the switching inverter 4 ⑽501 V. Invention description (7). The analog DC wave power i is shown in the first figure. The positive polarity compensation additional electric battery Π and direct current 仞 additional negative voltage of the power supply 7 are represented by _Vdc, Λ, Vdc, and negative voltage supplementary 12: 2, so as to say; ί: ΐ: the output of the device 11 is directly > The melon power supply VI will be supplied to a full-bridge circuit composed of electric power IGBTs. The 70, X2, X3, and X4 gate control signals G1, G2, G3, and "4 * & control circuit 4A generate the IfRT ^ located diagonally in the bridge circuit to control the IGBT full-bridge circuit. The V-angle BT power switching element ⑴ and X4, X? Generate voltage amplitude of ± V1 (V1 is the voltage of DC power supply 1 ::; due to the shape wave formed by the inductors LI, L2 and the capacitor ^^, Integral of the thousands of circuits formed by L1: "The current of this rectangular wave is smoothed, and the output voltage will change the proportion of the positive and negative components of the wave." Corresponding to the third & chart to the third d chart? The axis is the time axis, taking 0 ~ 2mS to represent a long sinusoidal waveform of 10V and 500Hz as an example. The second segment is a reference triangle wave voltage of 20KHz with a frequency of ± 10V repeated as a pffM carrier signal. The third segment is a mutual compensation IGBT. For the square wave of the gate signal of the bridge circuit, the fourth segment is: the axis is ± 500V, and the central waveform among the 3 waveforms is the output terminal 5 (wheel) of the switching and inverter output terminal 6 (common terminal). Out terminal) Example when the voltage is ± 400V, the upper and lower waveforms are the positive voltage of the DC auxiliary power supply. + And the negative voltage -Vdc respectively when the 50V DC output terminal of the auxiliary power source 7 and 8 of the voltage waveform.

588501 V. Description of the invention (8) The signal on the output voltage of the output terminals 5, 6 (this example is .. 25) will be compared with the reference signal to generate the Qin Temple Temple hanging number, and a voltage comparator will be used. Carry out a comparison of its mis-electricity _ =, and use this output voltage as the f-th reference two-wave electric mill τπτ Mingji Ay Tian 1 Lele—a picture ~ the second paragraph d picture 3 GBT gate "bluff, A negative feedback control loop is formed, and the output voltage of the switching inverter 4 of the voltage V2 of the signal generator can be obtained (illustration: In the example, the switching action input voltage is ± 10 volts relative to the reference signal voltage. 4 _). ^ In order to make this negative feedback loop characteristic have stable response characteristics, this loop contains amplitude phase compensation circuit, and knows the circuit, so its description is omitted. It is well known in the previous description Take a fixed-frequency base full-bridge switching inverter as an example, and use a bridge-type 1 switching inverter or other methods to implement gate control to obtain the same inverter output voltage. The method is also described by using IGBT as a voltage control element as an example. However, the use of power MOS-FET has an impact on the essence of the present invention. &Amp; The fourth figure is a schematic block diagram of one of the embodiments of the scope of patent application of the present invention. The switching inverter 4 is conventionally well known. The circuit constitutes an inverter circuit that converts DC voltage to AC voltage. DC power supply 1 supplies DC voltage to power input terminals 2 and 3, which will generate output signal 1 2 of reference signal generator 11 such as sine wave voltage and power loss. The sum of the output signal of the detector 4 and the input signal 3 are used as input signals. The AC voltage proportional to the output voltage waveform and the input signal overlap the DC compensation voltage, and the output terminal 6 is used as a common line.

Page 12 588501 V. Description of the invention (9) The AC voltage is output to the output terminal 8. Power loss detector 1 4 is a circuit for detecting power loss. The aforementioned power loss is controlled by voltage transistors such as power transistors and power MOS-FET. The voltage control elements such as the aforementioned power transistor and power MOS-FET are used in the power amplifier stage in the internal circuit of the power amplifier 10. ^ Figure ^ is an example of an implementation circuit of the switching inverter 4 in the second patent application range, and Figures 6a to 6d are examples of the simulated waveforms for the purpose of explaining the operation of the switching inverter 4. . In order to make the description more concise, the equivalent circuit of the DC power supply 1 not shown in the fourth figure compensates the positive polarity of the battery V3, V4 and the PWM control circuit 4A-1. The additional power supply uses the negative polarity of V5 and the PWM control circuit 4A-2. The compensation additional power supply is represented by V6, and the output voltage 12 of the reference signal generator 丨 丨 is represented by the symbol V2, and the description of the implementation operation is provided. The DC power equivalent circuits V3 and V4 are supplied to a half-bridge circuit composed of IGBTs of power switching elements X5, X6, X7, and X8. This igbt half loose = the circuit will output the additional positive polarity compensation voltage according to the gate control 0 signals of G5 and G6 generated by the PWM control circuit 4A-1, and then flatten by the electric capacitor C2, and then overlap on Vac to The PWM control circuit 4AJ amplifies the voltage of V5 and outputs it to the output terminal 8 of the DC auxiliary power supply. Similarly, the gates of G7 and G8 generated by the PWM control circuit "-2

And electricity. Three yokes are flattened, and then superimposed on Vac: p6 V6 electric power amplified by pWM 4A-2, light center ψ t coin J circuit magic power & and output to the output terminal of DC auxiliary power 9 ° , PWM inverter will be controlled by PWM control circuit 4A-1 and pwm

588501 V. Description of the Invention (ίο) The control circuit 4A-2 becomes different control loops and operates simultaneously. At this time, the 'PWM phase comparison triangle wave voltage usually operates synchronously with the same voltage waveform. Furthermore, in order to optimize the ripple voltage included in the PWM output voltage ', the two systems can be inverted in the drive phase to compare the triangular wave voltage. 6th a to 6d of the waveform! From paragraph 3 to paragraph 3, it is the same as the description in the fourth figure, but it is one of the waveforms of the PWM control circuit. For the waveform of paragraph 4, the 使 control causes ± 4 00v AC output voltage on output terminal 8 to generate + A voltage waveform when a DC compensation voltage of 50V and a DC compensation voltage of -50V are generated on the output terminal 9. Its person, the detailed circuit diagram of the seventh diagram is used to illustrate the power amplifier 1 〇 = to make a seventh diagram, in order to illustrate the overall operation of the present invention, let M denote the aforementioned crossover, the output voltage of the inverter, + Vdc indicates the positive voltage power supply of the DC auxiliary power supply, _Vdc indicates the DC auxiliary power supply, and V6 indicates the reference signal generator. 2. Take one of the output terminals 17 of the power amplifier as the reference potential (ground potential) for further explanation. This power amplifier embodiment is composed of XI, X2 and transistor Q1 ~ 06 + ten person gold & L is based on "", = table power amplifier, and error amplification: X3: Jin 2 to 22, right is general In the case of a linear amplifier, this side is relative to the AC power source that provides a greater than the maximum round output and repeated amplitude. The AC power source is similar and tracks the output voltage waveform. And, for example, the auxiliary power source of the power amplifier, the power of the output terminals 16, 17 of the power amplifier is willing to be ± 400v. 5. In the description of the invention (11), use a DC auxiliary power supply below 50V + Vdc & -Vdc. Power at this time In terms of the power supply of the amplifier, the power terminals 8, 9 are at the voltage of the sum of the auxiliary power + Vdc and -Vdc-that is, below loov, and will operate, and output 40 0V to the output terminals 16, 17 with a wide voltage. Operating range. This power amplifier will form a negative feedback amplifier that uses resistors R9 and Ri〇 as feedback resistors. For example, to achieve a voltage amplification of 40 times, select 40 ^ the aforementioned resistance ratio R10 / R9. Error amplifier X3 Output letter , Will be transmitted to the differential amplifier of XI in the next stage, however, because the signal potential of X1 overlaps the output of switching inverter V5 like output terminal 16 (earth 400V, etc.), and in order to make the differential feedback The common-mode input voltage of the amplifier χι is maintained within the normal operating range, and the attenuation must be far less than the attenuation. For example, when the common-mode input voltage range of the differential amplifier XI is a maximum of 40V 'and the voltage at the output terminal 16 is the maximum When ± 4〇 (^), the selected constant must have a voltage amplification of about 0 ·;!. This method has the function of a level shift circuit, which can output the ± 10V error amplifier X3 output signal relative to the ground potential. The potential moves to the differential amplifier XI that overlaps the output position of the switching inverter V5. The β differential amplifier X2 is a voltage amplifier for the purpose of compensating the signal attenuation of the previous section π, and it is also the maximum necessary to ensure the final stage power amplifier The amplifier whose output voltage increases. Here, in order to make full use of the features of the present invention, the differential amplifier XI determines the amplification factor in order to obtain a high common mode reflection ratio parameter. The resistance ratios R2 / R1 and R4 / R3, and the compensation capacitors connected in parallel to ^ R3, etc., fully consider the differential equalization of a wide band. Using this method, the AC voltage output v 5 of the inverter is included. Ripple voltage and spike interference 588501 V. Description of the invention (12) Disturbances will be considered because of the differential amplifier ^, in order to form the input reference signal; m: ;;. Device to ensure feedback in a wide frequency band In order to maintain the original search, you must adopt a negative voltage such as a negative voltage, which can significantly increase the switching operating frequency. Think of it as the DC auxiliary power supply voltage a-under, and the diagonal pair too 2 is an equivalent filter for product removal. The eighth aspect of the present invention will be described. The focus is on the AC voltage components connected to the switching inverter load resistance, I output voltage, except for the ratio of the two-to-two ratio parameter, which makes it an extremely small AC voltage 2 'input signal of the amplifier n and it is almost Power amplifier: =: 1 6 has an effect. This means that even if the AC voltage is included, it is a "constant current load, and represents a load with very high AC resistance. Therefore, even if a large capacitor is connected to load terminal 16 of the big test, the secondary load is almost non-negative [traditional technology The connection will degrade the response characteristics caused by the load when the inverter is connected, which can also avoid = the power supply of the converter ^ and the power amplifier χι will be a DC auxiliary m. However, if the input differential power range is considered == except The operation can be performed at a lower power supply voltage. In addition to the normal operation and amplification benefits, it is not necessary to increase or decrease the number of stages by the difference amplifier, and change the input and output polarity of each stage (Datong? Or reverse phase). , You can get the same effect. 〆 面 第 16 页 588501

In addition, in order to illustrate the convenience, the power amplifier shown in Figure 7 uses the performance of early purification, using conventionally well-known N-type and PNP-type transistor power amplifiers of several Darlington (dar 丨 ^ and Connection, complementary Darlington connection, N-channel and p-channel power m0s ~ f power amplifier, can also achieve the same operation. The examples of Figure 28, Figure η and Figure IX illustrate the power loss detection in detail. ^ In the seventh figure, a pair of transistors are represented by Q1 and Q2. The final power amplifier of the power amplifiers shown in the seventh figure of the aforementioned pair of transistor systems is connected in parallel when the emitter followers of the NPN and PNP transistors are formed. A pair of transistors in the transistor. For simplicity, let V1 represent the switching inverter output, + Vdc represent the positive voltage power supply of the DC auxiliary power supply, -vdc represent the DC auxiliary power supply, and the negative voltage power supply. It will provide the output signal of the reference signal generator to the output of the switching inverter and power amplifier, and output the power of the voltage amplified with the same voltage amplification rate. Connect the load to the output terminal E of the power amplifier (Figure 9 in B), the machine will pass the load current determined by the size and nature of the load. The outgoing load, the machine = flows through the transistor Qi, and the incoming load current will flow through ⑽. The moment the current flows through the two bodies The instantaneous power applied to the current and the ^ convolution between the collector and emitter will become a power loss, and sometimes it may exceed the absolute maximum allowable power of the transistor. The operational amplifier χι is used to detect the collector emission of the transistor W Differential amplifier for the purpose of voltage between poles. Similarly, X2 is a differential amplifier for the purpose of detecting the voltage between collector and emitter of Q2. The shunt resistor for current detection and differential amplifier χ3 are used to detect the difference of Q1. For the current, the current of Q2 is also detected by R2 and X4.

Page 17 588501 V. Description of the invention (14) σ uses the output signal of XI and X3, or X2 and X4 input to the multiplier X5 or X6 ^ 'The signal is proportional to the instantaneous power of transistor Q1 or Y. At this time, the amplification factor and shunt resistance of the differential amplifier for voltage detection and the differential amplifier for current detection can be used to convert the output voltage of the multiplier to the power loss of the Q1 and Q2. Consider voltage divider resistors R1 9, R21 or

Rj0, R22, set the voltage corresponding to the allowable power loss of the transistors Q1 and Q2 = set the power loss setting voltage V4 or ... In this way, when the power is exceeded or instantaneous, the diode D1 or D2 will flow, It becomes the operational amplification input signal. The operational amplifier x7 generally outputs the average power with the time constant of the transistor Q1 or 依 according to the integration factor and the ratio, and is added by J as another input signal of the switching inverter shown in the first figure. When the power loss of transistor Q1 or Q2 increases, it will use the output voltage of the switching inverter to reduce the absolute value of the voltage across the transistor Q1 or ⑽, forming a negative one.: ❿ 风 贝 口Turn on the road to avoid power loss above the threshold. In order to make this feedback loop use according to the benchmark? Lu :: Voltage control of the output of the aforementioned switching inverter: the heavy loop performs feedback so that it has the best comprehensive characteristics and the system's transient response is particularly steep, and each loop must be considered =: amplitude compensation. Use Make it have this power loss control back to phase ^ to greatly reduce the power loss of transistor QUQ2. Especially low =, when the load, the largest electric power loss will occur in the past due to the maximum current near the maximum current, but 'use of power loss Control back = there will be an appealing "command" to suppress the collector-emitter voltage to the required page. V. Invention Description (I5) Excellent effect of the minimum required. Use the shunt at 23 :: example. It is the same as the current detection, but the difference; the operation of the amplifier is the same as that shown in the fifth figure, and the circuit of t through the diode current. Other actions are the same; to the detected electric power, various amplifiers perform detection, and other conventional methods, such as stone 忐, can also obtain the same effect as the present invention.

Qi and = check: In terms of multiplication, the use of a multiplier to detect the transistor to break 瓌 f is to prevent the transistor from being damaged due to power loss, "the function, and the necessity of correct conversion into electricity. ！ Simple and error-prone converters may not be organic and have a certain degree of effect. In addition, the power amplifier circuit. If there is still a margin of knowledge, these tests and feedback can also be omitted. Second, it is described with respect to the implementation form of the present invention, however, this ^ π = implementation form described in the previous paragraph can also be used to superimpose the AC ^ ^ < machine compensation detection voltage only as positive and negative polarity One of the structures is to use a circuit configuration in which a certain DC compensation voltage is superimposed on the switching inverter to generate the voltage itself, and at the same time, the DC auxiliary power source generates m = j and the DC compensation voltage is vertical to the AC voltage. The circuit structure of the polar DC compensation voltage can also be used. Page 19 588501 Brief description of the diagram Brief description of the diagram The first diagram is an outline block diagram of the AC power supply of the present invention in the scope of application for item 丨. Consecutive example of the commutator inverter unit in the scope of patent application No. 1. ® ~ 3d is the analog operation of the circuit configuration of the second diagram. The fourth diagram is the second circuit configuration example of the patent scope. ^ The figure is the second embodiment of the scope of patent application. The invention is based on the circuit configuration of the switching inverter unit of the invention. The circuit structure of the diagram. The seventh diagram is the circuit structure of the power amplifier. • The drawing is the eighth diagram. The eighth diagram is the id of the power loss detector. The ninth diagram is the second diagram of the power loss detector. Description: A circuit constitutes the implementation of 12344A4A-1 4A-25 DC power supply power input terminal power input terminal switching inverter PWM control circuit PWM control circuit PWM control circuit output terminal

588501

Brief description of the drawing 6 Output terminal 7 DC auxiliary power supply 8, 9 Output terminal of DC auxiliary power supply 10 Power amplifier 11 Reference signal generator 12 Output signal 13 Output signal 14 Power loss detector 15 Feedback signal 16 Output terminal 17 Output terminal C1 ～ C3 Capacitor D1 ～ D4 Diode G1 ～ G8 Gate control signal L1 ～ L3 Inductor R1 ～ R4 Resistor R19 ～ R22 Divider resistor VI Output voltage of DC power supply V2 Output voltage of reference signal generator V3 DC power supply equivalent Circuit V4 DC power supply equivalent circuit V5 Positive polarity compensation additional power supply V6 Negative polarity compensation additional power supply XI ~ X8 Power switching element Page 21 588501

Page 22

Claims (1)

A switching power supply system with a power loss for generating a specific AC voltage for reverse connection to a load is: A control supply system for a control signal power amplifier of a reference commutator for the purpose of measuring the switching power supply voltage of a debt. A signal is connected to the AC power input terminal, and is connected to the ## wheel input terminal. It uses a DC voltage directly connected to the auxiliary power generating mechanism of the switch-inverter, and will use the DC auxiliary power supply. The AC voltage is used as a power source, and the DC power of the power amplifier is used to compensate the electrical state of the power amplifier mechanism of the power amplifier, and the detector output signal is connected to the switching power loss detection input terminal, and the switching The type of inverter is the wheel of the six method control signal input signal and the power loss detector: r :, the reference system is used for generation. Perform the summation of the number to perform the feedback control 2-a kind of supply system with the purpose of generating a specific alternating current I for the purpose of generating power loss detection. 'Connected to the power connection to the power number input terminal connected to the load, and said: Hand control signal terminal, characterized by β Hai parent inverter inverter circuit voltage mechanism, and each AC In the eighth generation, a plurality of parent stream wheel compensation voltages are superimposed on the AC wheel. The birth mechanism has a DC compensator superimposed with a DC compensation electric luxi I mechanism. The DC compensation voltage of the parent stream voltage of the exchange type reverse power is used as 588501 Make a power supply, and enter κ… ~ ton-knife double state, a power loss detector that will detect the power loss of the power amplification mechanism of the power amplifier = sub, and the switch inverter = control signal input terminal and power The rotation of the loss detector = 2; the first pressure generation uses the reference letter and the sum of the number to perform feedback control.