JPS6152199A - Flywheel type power source - Google Patents

Abstract

PURPOSE:To eliminate the booster of flywheel device rear stage by providing a middle tap in a winding for forming a generator motor. CONSTITUTION:A low voltage is supplied from an inverter 11 between the middle taps us-wa of windings 12u-12w of a stator winding 12 for forming a generator motor 12a, and a flywheel unit P is operated at a constant speed. On the other hand, the output of a commercial power souce 2 is output through a rectifier 3, a smoothing condenser 4, an inverter 5 and a filter 6. If the power source 2 is interrupted, the inverter 11 is stopped, and a thyristor 13a of a rectifier 13 is conducted. Thus, a high voltage from between high voltage terminals of the windings 12u-12w is supplied through the rectifier 13 to the inverter 5. In this manner, a booster can be eliminated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a flywheel type power supply device, and more particularly to a winding of a flywheel device.

[Prior art]

A flywheel type power supply device normally converts direct current obtained by rectifying an alternating current power supply into alternating current using an inverter to supply power to a load, and at this time, the flywheel of the flywheel device, which acts as a generator motor, rotates at high speed. During a power outage, the flywheel device converts the inertial energy of the flywheel into electrical energy and supplies power to the load.

FIG. 1 is a circuit diagram showing an example of a conventional flywheel type power supply device of this kind, and in the same figure, 1 is a primary winding 1a.
is the transformer connected to the commercial power supply 2, and the secondary winding 1
3.b is connected to the direct feed circuit, and the secondary winding IC is a rectifier circuit that constitutes a constant voltage constant frequency output main circuit (CVCF) S.
Smoothing capacitor 4, inverter 5. A rectifier circuit 7. which is connected to the filter 6 and whose secondary winding 1d constitutes a flywheel device drive circuit F. Smoothing capacitor8. Boost chopper circuit9. Diode 10. It is connected to the stator winding 12 of the flywheel device (P) via the inverter 11.The output from the winding 12 of the flywheel device P is connected to a rectifier circuit 13 having a switch function, a smoothing capacitor 14, and a boost chopper circuit 15. 16 is a change-over switch section consisting of switches 17 and 18 using Cyrisk, and a direct feed circuit and a main circuit S are input to the load (not shown) connected to the output terminal 19. Switch between the two.

Here, the rectifier circuit 3 consists of a bridge-connected diode 3a, and the inverter 5 consists of a bridge-connected transistor 5.
The filter 6 consists of a choke coil 6a and a capacitor 6b. The rectifier circuit 7 consists of a bridge-connected diode 7a, and the boost chopper circuit 9.15 consists of choke coils 9a, 1.5a and transistors 9b, 15.
b, and diodes 9c and 15c. The inverter 11 also includes a three-phase bridge-connected transistor 11a,
It is connected in parallel to each transistor lla and consists of an iris 13a and a diode 13b.

In addition, the flywheel device P has a winding WA12 and a rotor 12.
Brushless generator motor section 1 of permanent magnet quib consisting of f
2a and a flywheel 12b integrated with a rotor 12f. The generator motor section 12a is operated at a constant speed after being accelerated by a three-phase transistor inverter 11, and a certain amount of energy is stored in the flywheel 12b. When the commercial power supply 2 loses power, the three-phase inverter 11 that was driving the rotor 12f and flywheel 12b stops operating, and at the same time, the voltage is applied to the generator motor boost chopper circuit 15, and the boost chopper circuit 15 converts into CVCF. Main circuit Outputs the DC voltage required by the main circuit. This voltage is applied to the CVCF main circuit main circuit converter 5 and converted into alternating current.

The output voltageless type CVCF main circuit main circuit board shown in Fig. 1 has a CVC
Approximately 200 cm is required as the DC voltage of the S line of the F main circuit. By the way, the motor voltage of the generator motor section 12a is limited to about 150 Vrms due to the withstand voltage of the accelerating transistor inverter 11. In addition, 150
After the motor is operated at Vrms, if there is a power outage and the generator starts operating, the internal voltage drop due to the output current will substantially become about 140 Vrms. flywheel 1
Since the acceleration of 2b may be relatively slow, the inverter 11
The electric power sent from the motor to the generator motor section 12a may be small, and may be even smaller during constant speed operation. When operating as a generator, it is necessary to emit a large electromotive force.

[Summary of the invention]

An object of the present invention is to provide an intermediate tap in the windings constituting a generator motor section, supply an output from an inverter for driving a flywheel device between this intermediate tap and a ground terminal, and drive the motor at low voltage. The above drawbacks are eliminated by outputting a high voltage between the high potential terminal and the ground terminal of the winding when operating as a generator, and the present invention will be explained in detail below using examples. .

[Embodiments of the invention]

FIG. 2 is a circuit diagram showing an embodiment of the flywheel type power supply device according to the present invention, and the same components as in FIG. 1 are designated by the same reference numerals. In the figure, the stator winding 12 constituting the generator motor section 12a includes a Y-connected winding 12u,
It consists of 12V and 12W, and the common connection point is set to ground potential. Each winding 12u, 12v, 12w has an intermediate tap ua.

va and wa are provided, and the ground terminal side and intermediate tap ua
, va, and wa from an inverter 11. When operating as a generator, the ground terminal side and each winding 1
A high voltage is output from between the high potential terminals 2u, 12v, and 12w, and this voltage is supplied to the rectifier circuit 13. here,
When used as a generator, the initial value is approximately 300 V.
Make it possible to generate rms.

In the above configuration, the output sensing pressure during operation as a generator is sent to the rectifier circuit 13 as a Xyristor switch circuit, but if the output voltage is about 300 Vrms, a normal Zyristor can be used. Note that a voltage of about 150 Vrms is generated in the motor winding between the ground terminal side and the intermediate tap, but at this voltage it can be operated even with a normal transistor inverter. When a power outage occurs, the output voltage of the generator is sent to the rectifier circuit 13 and phase controlled to maintain the voltage of approximately 200V required by the CVCF main circuit S line, reducing costs by eliminating the step-up chopper. Furthermore, by increasing efficiency, it is possible to extend the power outage compensation time.

〔Effect of the invention〕

As explained above, according to the present invention, an intermediate tap is provided in the windings constituting the generator-motor section, and the output from the inverter for driving the flywheel device is supplied between the intermediate tap and the ground terminal to generate a low voltage. When driven as a motor and operated as a generator, there is no need to add a booster circuit between the high potential terminal and the ground terminal of the winding at a later stage of the high-voltage device, resulting in cost reduction.

[Brief explanation of the drawing]

Fig. 1 is a circuit diagram showing an example of a conventional flywheel type power supply device, and Fig. 2 is a circuit diagram showing an example of a flywheel type power supply device according to the present invention.3, 7.13... Rectifier circuit , 5... Inverter, 11... Auxiliary inverter, 12... Winding wire, 12a... Generator motor section, 12
b...Flywheel, 12f...Rotor, S...
・CVCF main circuit, P... flywheel device, ua
, va, wa ・ ・ ・Middle tap. In addition, in the figures, the same reference numerals are used for the same or corresponding parts. Agent Masuo Oiwa (and 2 others) Procedural Amendment (Volunteer 1. Indication of the case Patent Application No. 173721/1989 2)
Title of the invention: Flywheel-type power supply device 3, Representative Hitoshi Katayama, Part 5, Claims to be amended, Detailed description of the invention, Drawings and surface area. 6. Contents of amendment (1) The scope of claims will be amended and amended as shown in the attached sheet. (2) In the 19th line of page 2 of the specification, the phrase ``boost chopper'' is corrected to ``buck chopper.'' (3) The same book, page 3, line 16, “Boost chopper circuit/circuit 9
゜15'' is corrected to ``Chopper circuit 9.15J.'' (4) In the same book, page 5, lines 17 to 18, the phrase ``Between this intermediate tap and the ground terminal'' is corrected to ``This chopper circuit 9.15J.'' between the intermediate tap terminals.'' (5) In the same book, from page 5, line 20 to page 6, line 1, the phrase ``from between the high potential terminal and the ground terminal, and the child'' is corrected to ``from between the high potential terminals''. (6) On page 6, line 10 of the same book, the phrase ``The common connection point is set to the ground potential.'' is corrected to ``The common connection point becomes the neutral point.'' (7) In the same book, page 6, line 12, line 14 to line 15, the phrase "earth terminal side" is corrected to "neutral point side." (8) In the fourth and fifth lines of page 7 of the same book, the statement ``The motor winding section between the ground terminal side and the intermediate tap is corrected to ``j between the intermediate tap and the knob terminal.'' ( 9) In the same book, page 7, lines 16 and 17, the phrase "between this intermediate tap and the ground terminal" is corrected to "between this intermediate ground terminal." α0) In the same book, page 7, line 20, ``J from between the high potential terminal and the ground terminal is corrected to ``J from between the high potential terminals.'' (1) Correct Figure 2 of the drawing as shown in the attached sheet. Above 2, claims consist of a main circuit that rectifies AC power, converts it to AC using an inverter, and outputs it to a load, a flywheel, a rotor, and a winding, and operates as an electric motor with AC input. a flywheel device that operates as a generator when cut off and supplies output to the input side of the inverter via a rectifier circuit;
In a flywheel type power supply device including an auxiliary inverter that supplies the AC input to the flywheel device, an intermediate tap is provided in the winding, and the intermediate tap i
A flywheel type power supply characterized in that voltage from the auxiliary inverter is supplied between the terminals, and voltage from between the high potential terminals of the winding is supplied to the input side of the inverter of the main circuit via the rectifier circuit. Device.

Claims (1)

[Claims] It consists of a main circuit that rectifies AC power, converts it to AC using an inverter, and outputs it to the load, a flywheel, a rotor, and a winding.It operates as a motor when AC input is input, and operates as a generator when the input is cut off. , a flywheel device that supplies the output to the input side of the inverter via a rectifier circuit;
In a flywheel type power supply device including an auxiliary inverter for supplying the AC input to the flywheel device, an intermediate tap is provided on the winding, and a voltage from the auxiliary inverter is supplied between the intermediate tap and the ground terminal. ,
A flywheel type power supply device characterized in that a voltage from between a high potential terminal and a ground terminal of the winding is supplied to the input side of an inverter of the main circuit via the rectifier circuit.