JPS63500630A - Distribution main power auxiliary equipment - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Distribution main power auxiliary equipment The present invention mainly focuses on a method for providing AC power supply when power from the mains power supply is stopped. The present invention relates to a distribution main power supply auxiliary device used as a power supply stage. used for this purpose The purpose of the present invention is to provide alternative AC power during mains power failure. The objective is to provide a cheaper and more efficient device to provide

According to the invention, Monitoring means to determine when a fault condition occurs on the mains power supply: conversion means for converting the supply voltage into an alternating current supply voltage approximately equivalent to the supply voltage; and In response to the monitoring means, when a fault condition occurs during use, the input to the equipment is switched to the main line. Switching from the mains supply voltage to the AC supply voltage provided by the conversion means, when a fault condition exists When the input to the equipment is no longer present, the input to the equipment is Switching means for switching from voltage to mains supply voltage; An auxiliary device for a distribution mains power source for equipment powered by a power source is provided.

The mains power auxiliary device disables and alarms the device upon detection of certain conditions. Preferably, the device further includes protective means for operating the device.

Preferred embodiments of the invention will now be described in detail, by way of example only, with reference to the accompanying drawings. FIG. 1 is a block diagram of an auxiliary device according to the present invention; FIG. 2 is a block diagram of an auxiliary device according to the present invention; , equipment mains power failure and switching unit circuit diagram; Figure 3 is a circuit diagram of the insertion circuit of the device; Figure 4 is a circuit diagram of the device's stop and alarm circuit; Figure 5 is a circuit diagram of the device's indicator circuit. Figure 6 is a circuit diagram of the battery charger of the device; Figure 7 is a first waveform diagram; as well as FIG. 8 is a second waveform diagram.

As shown in Figure 1, the distribution mains power auxiliary equipment 1, a reversing unit 4, an emergency stop and alarm unit 6, a battery 7, and a battery charger 8. The switching unit 1 connects the main power supply of the main power input line 2. Constantly monitor pressure. The mains voltage is then applied from unit 1 to 3 bin socket 2. 4 is outputted to a device (not shown) via an output line 3. when set If the mains power supply voltage is determined to be too low or too high for the interval period, the mains power supply voltage is The source failure sensor and switching unit 1 connects the source of the output of the output line 3 to the mains power supply. 2 to an alternating current voltage generated by the inverting unit 4.

The reversing unit 4 converts the 12V DC voltage supplied by the battery 7 into a mains power supply. Convert to 240V AC voltage, which is equivalent to the supply voltage. generated by reversing unit 4. The alternating voltage applied is a square wave containing only lower frequency harmonics, or It is a sine wave composed of several superimposed low frequency harmonics. reversing unit The voltage waveform 500 generated by 4 is also shown in FIG.

The output terminal of the reversing unit 4 is connected to the mains power failure sensor and the switching unit via the power supply line 5. Combined with knit 1. Power for units 1゜4 and 6 is operated by the mains power supply. powered by a battery 7 which is recharged by a battery charger 8 each time Ru.

The emergency stop and alarm unit 6 is configured to shut down the unit 6 whenever a battery overload occurs. Configured to short the input terminals.

By shorting the input power to unit 6, the mains fault sensor and The replacement unit 1 is shut off. Current overload protection is provided by fuses as described below. executed.

The circuit arrangement of the mains failure sensor and switching unit 1 is shown in FIG. Uni IVA 240V: Use a 12V transformer 10 to convert the mains power voltage. Monitor. The secondary 12V winding is connected to a bridge rectifier 11 with four diodes. Continued.

The output terminal of rectifier 11 is connected in series with the contacts of relay 152. Relay 152 contacts are activated each time power is applied to the mains failure sensor and switching unit 1. The circuit is closed. Relay 152 provides overvoltage protection when power is not supplied to unit 1. to prevent damage to the unit's Nantes gates 16, 17 and 18. , the detection circuit of unit l, which will be described later, is cut off from the transformer. Goo H6,1? and 1 To provide further overvoltage protection with respect to 8, the output terminal of the bridge rectifier 11 A Zener diode 154 is provided in parallel with. Voltage is supplied to unit 1 8, the output of the rectifier 11 is connected to the shunt capacitor 12 as shown in FIG. , and a combination of resistors 156 that generate a ripple voltage waveform 502. be done. The attenuation constant associated with each period of ripple voltage is determined by resistor 156. It is determined. A ripple voltage is applied to two potentiometers 14 and 15. potentiometer Wipers 14 and 15 are activated when the ripple voltage is too low or too high, respectively. and is arranged to generate a signal indicating that it is. Mains voltage is correct When at level, the wiper of potentiometer 14 connects to the input terminal of Nandogoo I.16. high” signal, while the wiper of potentiometer 15 is connected to the Nant gate 170 input. Provides a “low” signal to the child. This is the number connected to the other two gates. This ensures that the output of gate 18 remains "high".

If an irregular condition occurs in the mains voltage and the selection time is less than 10 ms, e.g. If the voltage is too high or too low for the time given, the output of the Nant gate 18 will be It becomes "low" and triggers the LM555 timer 19. Timer 19 is in monostable mode. cents up to work on the card. Resistor 20 connected to timer 19 and key The capacitance 21 is configured such that the timer 19 is activated when the timer 19 is triggered at its input terminal T2. The mains are two typically open circuit pulses of 6 volts each of 0.7 second duration. It is like outputting to relays 22 and 23 which are operated, and those relays are , when deactivated by zero potential, closes for the duration of the pulse.

When the duration of the pulse ends after at least 0.7 seconds, the input of timer 19 Child T2 returns to a "high" voltage. This condition occurs when the mains power voltage returns to normal level and Its voltage is too high as measured by the mains fault sensor and switching unit 1. Occurs only when it is not present or too low.

Unit 1 is connected to the input terminal of gate 18 and in parallel and to the ground point. Resistor 158 connected in series with connected capacitor 160 and resistor 162 It includes a delay circuit consisting of. The delay circuit is connected to the mains power supply even though there is no power outage. If the mains voltage oscillates between a low level and an acceptable level, the mains voltage The timer keeps the voltage at a low level until it remains below an acceptable low level. The pulse that triggers timer 19 is Guarantees that a "low" voltage is reached after a period of time. This is shown in Figure 8, Here, assuming that the low level is a certain voltage 504, unit 1 is a delay circuit. is not included, the voltage 506 generated from the ripple voltage 502 is applied to the timer 19. will be entered. However, if a delay circuit is involved, the voltage 508 is input, and timer 19 keeps the ripple voltage lower than level 504 for a certain period of time. No output is generated until When the output of gate 16 is low, diode 163 ensures that the input of gate 18 remains high for a certain amount of time when , between the output terminal of gate 16 and the input terminal of gate 18 .

Power to the mains failure sensor and switching unit 1 is supplied by battery 7. The user 30, the thermal overload switch 166, and the DC power supply line 101 can be manually operated. on/off switch 28. Track 101 is another unit also supplies electricity. The thermal overload switch 101 is a switch of the reversing unit 4 which will be described later. detects the heat generated by the sensor and detects it if the heat reaches an unacceptable level. Open circuit. LED 168 is activated when fuse 30 blows or when switch 166 is activated. With the positive power supply, switch 166 and the switch to indicate when it is opened. Between two resistors 169 and 171 connected between connection point 170 with 28 connected in series. coupled to ground and to connection point 170 of switch 28. LE D 29 connected to the connection point on the opposite side is the fault sensor and switching unit. When power is supplied to the knit 1, instructions regarding it are given.

When activated, the relay 22 connects the DC power line 101 to the reversing unit 4 and emergency stop. and is connected to an output line 100 that supplies power to the alarm unit 6. capacitor 17 2 reduces noise in the DC feeder line 102 and prevents induced spikes. It is arranged in parallel with the m electric appliance 22 so that The diode 174 is connected to the timer 19. Guarantees that the voltage at the output terminal does not exceed the voltage at the feeder line 102 by more than 0.7 volts It is arranged in parallel with the relay 22 so that it does.

When the electric appliance 23 is operated, it cuts off the main power supply section 2 and supplies power to the reversing unit 4. The alternating current supply voltage generated by the Connect to line of force 3.

The bandpass filter prevents voltage spikes and noise from appearing on the output line 3.

The bandpass filter 174 includes two filters connected in series with the output lines 3a and 3b, respectively. Consisting of inductances 178 and 180, inductances 178 and 18 Each connection point of 0 is connected to a capacitor connected to ground. resistance 18 2 and 184 are ground points from the output lines 3a and 3b to discharge the capacitors. are connected to each. Bandpass filter 176 cuts 3dB at 2.5KHz It has an off point and a cutoff point of 40 dB at 20 KHz. fuse 27 and obi A resistor 186 connected in series to the input terminal of the bandpass filter 176 is a resistor 186 connected in series to the input terminal of the bandpass filter 176. socket with a metal oxide thyristor 188 connected in parallel with the input terminal of the high current and high voltage to electrical devices such as computers (not shown) connected to are used to prevent each from being applied.

As shown in FIG. 1, resistor circuit 190 is connected to each of the relay contacts of relay 23. connected to this. 'm electrical circuit 190 minimizes arcing between relay contacts. suppress.

The DC power supply line 101 is connected to the timer 19 and the emergency stop and alarm unit 6. It is connected to an input terminal of a voltage regulator 31 that supplies a supply voltage to the power supply line 102 . 6 The power supply of v is the positive power supply (Vdd) for each of gates 16, 17 and 18. It is also used to generate a 240v, 5QHz signal. Unit 4 is 4MHz water The output terminal of the oscillator 41 including the oscillator circuit 40 composed of the crystal oscillator 41 is 5. Connected to two dual 4-bit binary counters 42, 43, 44, 45 and 46 be done. The first four counters divide the frequency by a factor of 10, and the last counter 4 6 divides the frequency by a factor of 8 to generate a 5QHz signal. The circuit 200 is The binary code executes the instructions regarding it when the inverter 4 is in operation. It is connected to counter 46. The circuit 200 connected as shown in FIG. a resistor 204 connected to the emitter of the transistor 202; , and an LID 206 connected between the ground point and the resistor 204. mosquito The selected outputs from the counter are 180° out of phase and approximately 49.5% Generates two square waves with duty cycle at output terminals A and B The digital circuit 103 is manually operated. The square wave also has a frequency of 50Hz.

The digital circuit 103 includes three NOR gates 4 connected to each other as shown. 7, 48, 49, three Nantes gates 50, 51, 52, and two It is composed of converters 53 and 54.

Output terminals A and B are connected to a device that amplifies the square wave and usually consists of a household mains power supply. 10 Standard driver circuits 60 and 6 for shaping AC signals suitable for supplying to 1, respectively. The output terminals 104 and 105 of the two driver circuits are It is connected to the opposite terminal of the primary winding of voltage generator 62. Each driver circuit two connected to an npn transistor amplifier stage 66 via a transmitter follower stage 65. pnp transistor amplifier stages 63 and 64. In row 66 Three transistors operating in a column can supply an effective current (i25A). Ru. A 6A diode 67 isolates the transistors of stage 66 from the voltage induced in transformer 62. at the output terminals of each driver circuit to protect against excessive transients and currents. It will be done.

The input terminals of each driver circuit have a driver output when the 50Hz input signal stops. The capacitor 68 is connected in series so that the driver circuit does not operate any further. Ru.

22. The circuit in G4 consists of a decoupling capacitor connected to the output line 100 before the binary counter. Contains a capacitor 105. The positive terminal 106 of the battery 7 is connected in parallel and has a current of 45A. The transformer 62 is connected via three 15A fuses which effectively operate as fuses 69. connected to the center tap of the primary winding. Capacitor 20B performs filtering. is connected in parallel with the secondary winding of the transformer 62 to improve the power factor and improve the power factor. Therefore, the inversion operation can be performed efficiently with low load.

The emergency stop and alarm unit 6 shown in FIG. It consists of Battery overload circuit 70 includes a resistor 72 and a potentiometer 73. The voltage of the power supply line 10 is monitored via a voltage divider network.

The wiper of the potentiometer 73 is connected when the supply voltage of the voltage line 10 is 11. When lower than IV, the n p n, is sent such that a "high" signal is provided to the host. Transistor 75 then , 6V feeder line 102 is connected to relay 76 . The high signal is the output of transistor 75. The alarm 77 is activated from the transmitter through the diode 300, and the two L E D is supplied to the power feeder 302 that turns on 304 and 306, but their configuration All elements are connected as shown in FIG. LED306 is diode 30 8 to the power supply line 302, and is turned on after the LED 304 is turned on.

LEDs 304 and 306 and alarm 75 all indicate that relay 80 is receiving sufficient current. open, close the contact, and turn on the "buffer low" indicator and "alarm on". Turned on before providing each indicator. The contacts of relay 76 are closed. As a result, the power supply line 101 is short-circuited, the fuse 30 is blown, and the auxiliary equipment is disconnected from the device. is disabled.

The alarm is activated each time the contacts of relays 22 and 23 are opened, and alarm 77 The switch 83 connected in series with the feeder line 101 in front of the The alarm is set to be turned off when the However, switch 8 Regardless of the state in step 3, an alarm is generated each time the voltage of the power supply line 101 becomes lower than 11.1V. The alarm device 77 is activated.

As shown in FIG. 5, the indicator circuit 71 indicates that the battery compartment 7 is completely The feeder 1 is configured to carry out an indication via the LED 400 as to whether the power is on or not. Connected to 01. The circuit consists of a potentiometer 402 and two inverting numbers connected in series. connected to gates 404 and 406, transistor 410, and LED 400. In other words, it consists of a resistor 412 connected as shown in FIG. Ru. LεD400 is determined whenever the supply voltage of the feeder line 101 becomes lower than 13.5 volts. is turned on.

The battery charger 8 shown in FIG. This is a standard circuit that receives power from the The secondary winding of transformer 90 is connected to the voltage regulator net. Connected to a bridge rectifier 91 that supplies ripple voltage to the workpiece 920 input terminal .

The output terminal of network 92 is connected to relay 96 . The coil of relay 96 is Connected to the secondary winding of transformer 90 through diode 97 and resistor 98, Capacitor 93 is connected in parallel with the operating coil. The configuration is such that the mains supply voltage is present. The contacts of the relay connect the output terminal of network 92 to battery 7 when It looks like this. The LED 94 connected to the resistor 95 connected to the ground point It is provided to indicate when the battery charger 8 is operating.

Numerous variations will be apparent to those skilled in the art without departing from the spirit of the invention.

■　■ Pure moss (change in content L) Scope of request for amendment 2. The apparatus of claim 1, comprising:

3. (corrected) monitoring means in response to the output from said gating means; Connecting the DC supply voltage to the converting means (4) and connecting the switching means (23) to the device generates an enable signal to switch the input of the conversion means to the output of the conversion means. 3. Apparatus as claimed in claim 2, including timing means (19) for generating the signal.

4. (corrected) said timing means (19) receives error from said gating means; Claim 3 is a metastable circuit that generates the enable signal in response to a fault signal. Apparatus described in section.

5. The (corrected) switching means means that the contact (22) converts the DC supply voltage. The first relay (22) and the contacts operate to connect or disconnect the equipment. a second operative to vary the input of the converter from the mains supply voltage to the output of the converting means; 5. Device according to claim 4, comprising a relay (23).

6. Capacitor (172) and diode (174,) filter transient voltage Claim 5 connected in parallel with the working coil of the first relay for processing. The device described.

7. The resistor (190) is connected to the second relay contact to minimize arcing. 7. A device according to claim 5 or 6, which is combined between

8゜ Includes an out-left connector 24 to which the device is connected during use, and a low-frequency filter The connector (176) is connected between the contacts of the second relay and the connector. The device according to item 7.

9. The low-pass filter has a 3 dB reduction level present at approximately 2 kHz. The device according to claim 8, which has a wave number response or is composed of a C filter. .

10, (Delete) 11. Claim 2, wherein the (corrected) predetermined time is at least 0.5 seconds. Apparatus described in section.

12, (corrected) conversion means are counters (42, 43, 44, 45 and 46) an oscillator (41) coupled to the oscillator (41) and first and second square waves out of phase with each other; countergating means configured to generate a square wave with a central coupled to opposite ends of a tap transformer (62), the center tap of which is connected to the DC supply. 12. A device according to any one of claims 1 to 11, which is coupled to a voltage.

13. A shaping circuit (6) coupled between the counter gate means and the opposite end of the transformer. 1, 62), each shaping circuit corresponds to approximately half a cycle of one sine waveform. 13. The apparatus of claim 12, operative to generate an output waveform.

14. The (corrected) DC supply voltage is A storage battery that operates to shut off the storage battery when the voltage drops below a predetermined level. 14. A device according to any one of claims 1 to 13, including a protection circuit.

15. Detects the output voltage of the storage battery and detects when the voltage of the storage battery drops below the predetermined level. The switching circuit is operated to short-circuit the battery when the battery is Claim 14 includes voltage detection means for blowing a fuse connected to the circuit. equipment.

16. Audible alarm signal and/or visual alarm when said monitoring means detects a fault condition. Any of claims 1 to 15 including an alarm circuit for generating a signal. The device according to item 1.

Procedural amendment (formality) 1985//Monday Noah Day Mr. Kunio Kogawa, Commissioner of the Patent Office 2. Name of the invention Distribution main power auxiliary equipment 3. Person who makes corrections Relationship to the incident: Patent applicant Name McGregor, James °.

4. Agent Address: Shizuko Toranomon Building, 8-10 Toranomon-chome, Minato-ku, Tokyo 105 Phone: 504 -07215, date of correction order November 17, 1986 (shipment date) 6. Subject of correction (1) Pursuant to the provisions of Article 184-5, Paragraph 1 of the Patent Law (contents except for the third line of the first page) (No change in Correct to position J. (As shown in the attached sheet) 8. List of attached documents (1) Amended Article 184 of the Patent Act Procedural amendment (formality) 1.Display of the incident PCT/AU8610 O210 2. Name of the invention Distribution main power auxiliary equipment 3. Person who makes corrections Relationship to the incident: Patent applicant Name McGregor, James 4. Agent Address: 8-10-5 Toranomon-chome, Minato-ku, Tokyo 105, Date of amendment order 6. Subject of correction (1) “Invention column (2) Translation of the written amendment 7. Contents of correction (1) Fill out the “Title of the Invention” column of the submission form of the translation of the written amendment. Correct to device J. (As shown in the attached sheet) (2) Engraving of the translation of the written amendment (no change in content) 8, list of attached documents (1) Translation of the corrected written amendment Send form for submission: 1 copy (2) One translation of the written amendment international search report 1N+1++llll@IJ-A@l1(It@#4@PCT/Aυ861002 10ANNEXTToTHEINTERNATIONALSEARCHREPOR TON

Claims (1)

[Claims] 1. monitoring means (1) for determining when a fault condition occurs in the mains power supply; Conversion means for converting a DC input to an AC supply voltage that is approximately equivalent to the mains supply voltage (4); and In response to the monitoring means, if a fault condition occurs during use, the input to the equipment is switched to the main line. Switching from the mains supply voltage to the AC supply voltage provided by the conversion means, when a fault condition occurs When the input to the equipment is no longer present, the alternating current supply provided by the means of converting the input to the equipment switching means (23) for switching from the voltage to the mains power supply voltage; Auxiliary equipment for the distribution mains power supply for equipment that is normally powered by the mains power supply (2) Place. 2. The monitoring means includes rectifier means (11) for generating a rectified voltage level from the mains supply voltage. ) and issue a fault signal when the rectified voltage is higher or lower than a predetermined voltage level. 2. Apparatus as claimed in claim 1, including gate means (16, 17, 18) for generating an air flow. 3. The monitoring means converts the DC input into the converting means (in response to the output from the gate means). 4), and the switching means (23) connects the input of the device to the output of the conversion means. timing means (1) for generating an enable signal to operate the switch; 9). 4. The timing means (19) is responsive to a transient fault signal from the gating means. The device according to claim 3, which functions as a monostable circuit for generating an enable signal. Place. 5. The switching means has a contact (22) that connects or interrupts the DC input to the converting means. The first relay (22) and contacts operate to disconnect the equipment input from the mains power supply. a second relay (23) that operates to change the supply voltage to the output of the conversion means; 5. The apparatus according to claim 4, comprising: 6. Capacitor (172) and diode (174) filter transient voltages Claim 5 is connected in parallel with the operating coil of the first relay in order to equipment. 7. A resistor (190) connects the contacts of the second relay to minimize arcing. 7. A device according to claim 5 or 6, which is combined between 8. Includes an outlet connector 24 to which the device is connected when in use, and a low pass filter (176) is connected between the contacts of the second relay and the connector. Apparatus described in section. 9. The low pass filter has a frequency at which a 3 dB reduction level exists at approximately 2 KHz. 9. The device of claim 8, comprising an LC filter with a numerical response. 10. A holding circuit (1) for holding the enable circuit for at least a predetermined period 58, 160, 162) any one of claims 2 to 9 The device described in. 11. 11. The apparatus of claim 10, wherein the predetermined period is at least 0.5 seconds. . 12. The conversion means includes a generator coupled to the counters (42, 43, 44, 45 and 46). a vibrator (41) and a first and second square wave which are out of phase with each other; counter gate means configured to provide a square wave to the center tapped transformer 62; Claims coupled to opposite ends, wherein the center tap of the transformer is coupled to the DC input. The device according to any one of paragraphs 1 to 11. 13. A shaping circuit (6) coupled between the counter gate means and said opposite end of the transformer. 1,62), and each shaping circuit corresponds to approximately half a cycle of one sine waveform. 13. The apparatus of claim 12, operative to generate an output waveform. 14. The DC input is taken from an accumulator, and the device operates until the accumulator voltage is at a predetermined level. Claims that include a battery protection circuit that operates to shut off the battery when the battery drops below The device according to any one of the ranges 1 to 13. 15. Detects the output voltage of the storage battery and detects when the voltage of the storage battery drops below the predetermined level. Activates the switching circuit to short-circuit the battery when the battery is Claim 14 includes voltage detection means for blowing a fuse connected to the circuit. equipment. 16. an audible alarm signal and/or a visual alarm when said monitoring means detects a fault condition; Any of claims 1 to 15 including both alarm paths for generating a signal. The device according to item 1.