JPH01171502U

JPH01171502U -

Info

Publication number: JPH01171502U
Application number: JP1988064592U
Authority: JP
Priority date: 1988-05-17
Filing date: 1988-05-17
Publication date: 1989-12-05

Description

[Brief explanation of the drawing]

第１図は、本考案の第１実施例を示す電気回路
図。第２図は、第１実施例、及び第２図実施例の
充電回路を示す構成図。第３図は、第２実施例を
示す電気回路図。第４図は、従来の交流モータ駆
動用３相交流インバータの電気回路図。１０……インバータ回路、１２……バツテリ、
１４……交流モータ、２０……充電電源、２２，
２４……充電電源接続スイツチ、２６，２８……
充電回路切換スイツチ、３２……充電回路切換ス
イツチ（コイル結線切換スイツチ）、３４……コ
イル結線切換スイツチ。 FIG. 1 is an electrical circuit diagram showing a first embodiment of the present invention. FIG. 2 is a configuration diagram showing the charging circuit of the first embodiment and the embodiment of FIG. FIG. 3 is an electrical circuit diagram showing a second embodiment. FIG. 4 is an electrical circuit diagram of a conventional three-phase AC inverter for driving an AC motor. 10...Inverter circuit, 12...Battery,
14... AC motor, 20... Charging power source, 22,
24... Charging power supply connection switch, 26, 28...
Charging circuit changeover switch, 32...Charging circuit changeover switch (coil connection changeover switch), 34...Coil connection changeover switch.

Claims

[Scope of utility model registration request]

An inverter circuit 10 each composed of six switching elements and diodes for exchanging DC power from a battery to three-phase AC power;
a three-phase AC motor 14 driven by the inverter circuit; a three-phase output of the inverter circuit;
Charging power supply connecting means 22, 24 provided on two phases of the three-phase power line connecting the three-phase input of the AC motor, separating the inverter circuit and the AC motor, and connecting the inverter circuit and the single-phase AC power source for charging.
And a part of the coil that constitutes the AC motor is L.
Coil connection switching means 32, 34 for switching the connection of the motor coil so that the coil can be used as a C filter coil and the rest can be used as a charging reactor.
and LC obtained by the coil connection switching means.
Together with the filter coil, a capacitor _C1 for forming the LC filter is included in the two phases of the three phases of the inverter circuit that are connected to the charging single-phase AC power supply by the charging power supply connection means. 4
a rectifier diode bridge circuit constituted by two diodes, one switching element and one diode each included in the remaining one phase, a charging reactor obtained by the coil connection switching means, and a coil Charging circuit switching means 26, 28, and 32, which constitute a charging circuit for charging a battery from a single-phase AC power supply for charging, by the LC filter coil obtained by the connection switching means and the LC filter constituted by the capacitor; A battery charge/discharge control device for AC motors.