JPS5950734A - Voltage regulator for magnet type ac generator - 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 The present invention relates to a voltage regulator for a magnetic alternator mounted on a small boat, two-wheeled vehicle, etc.

1- In general, this type of generator exhibits a characteristic in which the output voltage increases depending on the number of rotations thereof, so a voltage regulator is added to ensure that an appropriate voltage is supplied to the load.

Fig. 5 shows the circuit of a conventional device, in which an AC load 2 such as a headlamp is connected to an output terminal 1a of a magnetic AC generator 1 (hereinafter simply referred to as a generator), and an AC load 2 such as a headlamp is connected to an output terminal 1b. Battery 3 is connected.

4 is a protection circuit for preventing overcharging of the battery 3, which includes a thyristor 4a interposed in series between the output terminal 1b and the positive electrode side of the battery 3, and a zener diode 4b for setting the trigger voltage of the thyristor 4a. etc., and the appropriate battery voltage VB and trigger voltage vT are VB<71.
The thyristor 4a is sometimes turned on so that a charging effect can be obtained.

Reference numeral 5 denotes a voltage regulator, which is composed of a thyristor 5a connected to short-circuit the voltage of a half wave different from the charging side half wave of the battery 3, and a trigger circuit for turning on this thyristor 5a at an appropriate time. It is. One circuit of this circuit is connected to a full-wave rectifier circuit 5b composed of diodes D1 to D4 and an average output voltage of the full-wave rectifier circuit 5b, and is connected to the thyristor 5a to obtain an average output voltage of the full-wave rectifier circuit 5b. Zener diode to set the trigger voltage of
1='''5c and resistor R2, resistor R1, capacitor C
1, the Zener diode 5c, and the thyristor 5a after a certain delay by the delay circuit 5d when the voltage exceeds the voltage set by the resistor R2.
The third element is composed of an amplifying transistor 5e and the like that supplies current.

According to this configuration, the output voltage of the generator 1 is
The half waves that are not used for charging are adjusted by the voltage regulator 5. In other words, when the average output voltage from the full-wave rectifier circuit 5b exceeds the set value, the zener diode 5C becomes conductive, and after an instant delay by the delay circuit 5d, the amplifying transformer 5e turns on, which triggers the thyristor 5a. This is because the output voltage of the generator 1 is short-circuited.

However, in the case of the conventional device described here, it is easily affected by the state of charge of the battery 3, and it is difficult to adjust the voltage to a constant voltage for all conditions of the battery 3. The reason for this is that the thyristor 4a connected in series to the charging circuit turns on or off depending on the state of charge of the battery 3, and if the battery 3 is at approximately the appropriate voltage, the voltage shown in Figure 4 (a)
On the other hand, if the voltage is below the appropriate voltage, the output voltage waveform becomes as shown in FIG. 4 (b), and the output voltage fluctuates significantly. However, since the trigger point of the thyristor 5a of the voltage regulator 5 is the point at which the capacitor C4 of the delay circuit 5d is charged after the zener diode 5C becomes conductive, the trigger point of the thyristor 5a depends on the state of charge of the battery 3. As a result, the voltage supplied to the AC load 2 no longer has an appropriate value. In other words, the charging time constant of capacitor C1 is determined by the value of resistor R2, but if the value of resistor R2 is set so that an appropriate output voltage is obtained when battery 3 is fully charged, then when battery 3 is discharged, ), the terminal voltage decreases,
Further, since the charging time constant of the capacitor C4 is large, the timing of the thyristor 5a is delayed and the AC load voltage increases (see FIG. 3(A)). On the other hand, battery 3
If the voltage is set so that an appropriate voltage is obtained when discharging, the value of resistor R2 will be smaller than the former, so the charging time constant will be smaller and the charging point will be earlier.
After the AC load voltage is properly charged, the AC load voltage is controlled to be lower than the appropriate value.

As described above, there is a problem that the battery 3 is significantly affected by the condition and the voltage cannot be adjusted to an appropriate voltage.

The present invention has been made to deal with such a situation, and is designed to supply an appropriate voltage to an AC load regardless of whether the battery is in a discharged state or a properly charged state.

A detailed explanation will be given below according to the illustrated embodiment.

Note that the same members or equivalent parts as in the previous description are indicated by the same reference numerals.

FIG. 1 shows a circuit diagram of the device of the present invention, in which one of the diodes constituting the full-wave rectifier circuit 5b, which rectifies the half-wave on the side that charges the battery 3, is connected to a resistor R.
This is the configuration changed to 4.

Of course, the diode D2 may be replaced with this resistor.

In this way, the charging time constant of the capacitor C4 of the delay circuit 5d is different between the half-wave on the charging side of the battery 3 and the half-wave on the side where the voltage is short-circuited. The time constant becomes larger. As a result, even if the charging side half-wave voltage to the battery 3 fluctuates greatly when the battery 3 is fully charged or discharged, the amount of charge to the capacitor C1 is small, and the thyristor 5a's trigger point mainly changes the voltage to the side. It depends on the half-wave voltage on the dividing side. Therefore, the voltage can be controlled without being affected by the half-wave voltage on the charging side to the battery 3, which has significant voltage fluctuations, so that the voltage can be adjusted to an appropriate voltage.

FIG. 2 shows another embodiment of the inventive device, in which the diode PD3 of the full-wave rectifier circuit 5b in the embodiment of FIG. 1 is replaced with a resistor R5. Replacing it with a resistor in this way has the effect of absorbing surge voltage.

Figure 3 shows the output voltage characteristics of the device of this invention and the output voltage characteristics of the conventional device. It remains almost constant even with changes in the rotational speed of the machine 1.

As is clear from the above description, the invention is based on the fact that the thyristor trigger that short-circuits the output voltage of the generator compares the charging time constant of the capacitor that delays the charging point of the battery to the side that short-circuits the voltage. Since it is made large, even if there is a large fluctuation in the half-wave voltage used to charge the battery, the influence on the control voltage can be reduced, which has the effect of suppressing alternating current load voltage fluctuation as much as possible.

[Brief explanation of the drawing]

Fig. 1 is a circuit diagram when this inventive device is implemented in a magnetic AC generator, Fig. 2 is a circuit diagram of another embodiment, Fig. 3 is a comparative characteristic diagram of this inventive device and a conventional device, and Fig. 4 The figure is a voltage waveform diagram on the battery charging side. (A) is when the battery is fully charged, (
B) shows the discharge time, and FIG. 5 is a circuit diagram of the conventional device. ■...Magnetic AC generator, 2...AC load, 4...Protective circuit, 5...Voltage regulator, 5d...・Delay circuit. Patent Applicant: Stanley Electric Co., Ltd. Description of the case 1982 Patent Application No. 161504 2 Name of the invention Magnetic alternator voltage regulator 3 Relationship with the person making the amendment A'1 Applicant Name (230) Stanley Electric Co., Ltd. 4. Agent Address: 1-1-5 Minami Aoyama-chome, Minato-ku, Tokyo; Date of amendment order (voluntary); (Delivery date): Month, Day 6, Showa; Detailed description of the invention in the scope of claims to be amended. Column: Brief Description of Drawing Column: Drawing 7, Contents of Amendment (1) The Claims column of the specification of the present application will be amended as shown in the attached sheet. (2) Same, page 3, line 5, ``Correct the resistor R+ and capacitor C+J with a parallel circuit J of resistor R+ and capacitor C1.'' (3) Same, page 3, lines 9 and 16, `` "For extra width"
Correct each j for switching. (4) Same, page 4, line 8, insert the following sentence between "varies." and "however." Note that the upper half of each waveform shows the charging side output waveform, and the lower half shows the control side output waveform. j (5) Same, page 4, line 10, I"Capacitor C + charging"
``The capacitor C+ is multiplied by W to the voltage charged by the half-wave on the battery charging side, and the voltage is corrected to charge J by the half-wave voltage on the controlling side.'' (6) Ibid., page 4, line 17, `` "Set as shown in Figure 3 (A)" is corrected as "Set as shown in Figure 3 (A)." (7) Same, page 4, line 18, amend "Figure 4 (a)-1 to r Figure 4 (b)". (8) Same, page 4, line 18, "that terminal" is corrected to "output of half wave on battery charging side". (9) Same, page 4, line 19, [Also, Conden 1...
Since it is large, delete -1 and insert ``The amount of charge due to the half-wave voltage on the battery charging side of the condenser 'j°C+ will also be small.'' (10) Same, page 5, line 1, "Figure 3 (a)"
Correct as shown in Figure (b) j. (11) Same, page 5, line 4, insert the following sentence between "get smaller" and [trigger]. After the battery 3 is properly charged, the output voltage of the half-wave on the battery charging side becomes high and the amount of charge due to the half-wave voltage on the battery charging side becomes large, as shown in FIG. 12) Same, page 5, lines 5-6, “Battery 3 is...
...Delete "after that." (13) Same, page 5, line 9, ``Appearance'' and 1. Appropriate frost pressure.''
Insert r AC load voltage J between and. (14) Same, page 6, line 10, "The amount of charge is" is corrected to "What is the variation in the amount of charge?" (15) Same, page 6, line 11, 1 point is "[mainly]
Except when battery 3 is disconnected between
Insert. (16) Same, page 6, line 15, ``Insert 1 for the AC load voltage between ``Naru, so,'' and ``appropriate voltage.'' (17) Same, page 6, line 16, ``Insert 1 for the AC load voltage.'' ” and then add the following sentence. Note: In this embodiment, the delay circuit 5d has resistors RI and R.
The capacitor CI is connected in parallel to the series connection of the capacitors CI, but with this configuration, the discharge time constant of the capacitor CI becomes large, and the voltage can be maintained at an appropriate voltage even at high speed rotation. j
(18) Same, page 6, line 20 to page 7, line 1, "absorbable effect" is corrected as [absorption effect J. 2- (19) Same, page 7, line 3, [replace -1 of (a) with r(a)
, (b) 1. (20) Same, page 7, line 1, replace “(b), (c)” with “(
C) and (d) correct J. (21) Same, page 7, line 19, "voltage waveform diagram" is corrected to r output waveform diagram 1. (22) Same, page 8, line 4, "4... protection circuit" is replaced with "
4...Overcharge prevention circuit" is corrected. (23) In the drawings, Figures 2 and 3 will be corrected as shown in the attached sheet. Above 3-r2, claims detect the rectified output voltage of the magnetic AC generator, short-circuit the half-wave output voltage that is not used for charging the battery with a thyristor, and connect it in series to the battery charging circuit. In a voltage regulator for a magnetic alternator, the voltage regulating device for a magnetic alternator has an overcharge prevention circuit which has a thyristor interposed in the battery voltage and turns on the thyristor to obtain a charging effect when the battery voltage is less than a set value. The capacitor charging time constant in the delay circuit that changes the trigger point of the thyristor for short-circuit control is set to be larger during the half-wave on the battery charging side than during the half-wave on the voltage controlling side. Voltage regulator for magnetic alternator. J

Claims (1)

[Claims] The full-wave rectified output voltage of the magnetic alternator is detected, and the half-wave output voltage that is not used for charging the battery is short-circuited using a thyristor, and a thyristor is inserted in series with the battery charging circuit to maintain the battery voltage at the set value. In a voltage regulator for a magnetic alternator, the thyristor is turned on to obtain a charging effect when the thyristor is less than 100%. A voltage regulating device for a magnetic alternator, characterized in that the time constant is set to be shorter during a half-wave on the battery charging side than during a half-wave on the voltage controlling side.