Automotive electric power supply apparatus
First Claim
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1. An automotive electric power supply apparatus comprising:
- a battery;
an automotive dynamoelectric machine linked to an engine, said automotive dynamoelectric machine being driven by electric power from said battery to start said engine during starting of said engine, and being driven by said engine to generate alternating-current power after said engine has been started;
an inverter having a plurality of element-diode sets, each element-diode set including a pair of switching elements connected in series between positive and negative terminals of said battery and a diode connected in parallel to said switching elements, a connection point of said switching elements connected in series being connected to said automotive dynamoelectric machine; and
a control apparatus for controlling said inverter such that said automotive dynamoelectric machine is driven by switching said switching elements on and off to supply electric power from said battery to said automotive dynamoelectric machine during said starting of said engine, and said battery is charged by switching said switching elements off to enable said diodes to rectify alternating-current power generated in said automotive dynamoelectric machine into direct-current electric power at least across an entire normal rotational speed region of said engine, wherein said automotive dynamoelectric machine is constructed so as to satisfy an expression {E/(p2w)}<
0.04, where E is a regulated voltage during electric power generation, p is the number of magnetic poles in a rotor, and w is the number of series conductors in an armature winding per magnetic pole.
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Abstract
Each of the phases of coil in an armature winding of a dynamoelectric machine is constructed so as to have six turns, an inverter has a plurality of element-diode sets, each element-diode set including a pair of switching elements connected in series and diodes connected in parallel to the switching elements, connection points of the switching elements connected in series are connected to the dynamoelectric machine, a control apparatus controls the inverter such that the dynamoelectric machine is driven by supplying electric power from a first battery to the dynamoelectric machine during starting of an engine, and alternator mode electric power generation is performed by the dynamoelectric machine at least in a normal rotational speed region of the engine.
75 Citations
14 Claims
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1. An automotive electric power supply apparatus comprising:
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a battery;
an automotive dynamoelectric machine linked to an engine, said automotive dynamoelectric machine being driven by electric power from said battery to start said engine during starting of said engine, and being driven by said engine to generate alternating-current power after said engine has been started;
an inverter having a plurality of element-diode sets, each element-diode set including a pair of switching elements connected in series between positive and negative terminals of said battery and a diode connected in parallel to said switching elements, a connection point of said switching elements connected in series being connected to said automotive dynamoelectric machine; and
a control apparatus for controlling said inverter such that said automotive dynamoelectric machine is driven by switching said switching elements on and off to supply electric power from said battery to said automotive dynamoelectric machine during said starting of said engine, and said battery is charged by switching said switching elements off to enable said diodes to rectify alternating-current power generated in said automotive dynamoelectric machine into direct-current electric power at least across an entire normal rotational speed region of said engine, wherein said automotive dynamoelectric machine is constructed so as to satisfy an expression {E/(p2w)}<
0.04, where E is a regulated voltage during electric power generation, p is the number of magnetic poles in a rotor, and w is the number of series conductors in an armature winding per magnetic pole. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification
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Current AssigneeMitsubishi Denki Kabushiki Kaisha (Mitsubishi Electric Corporation)
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Original AssigneeMitsubishi Denki Kabushiki Kaisha (Mitsubishi Electric Corporation)
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InventorsAsao, Yoshihito, Kuribayashi, Masaru
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Primary Examiner(s)IP, SHIK LUEN PAUL
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Application NumberUS10/352,875Publication NumberTime in Patent Office1,056 DaysField of Search318140-158, 318/138, 318/439, 318/139, 318/808, 318/254, 310/113, 310/114, 477/3, 290/45, 290/40.C, 290/40.R, 180/65.2, 180/65.4, 322/22, 322/17US Class Current318/140CPC Class CodesF02N 11/04 the motors being associated...H02K 11/05 Rectifiers associated with ...H02K 11/30 Structural association with...H02K 11/33 Drive circuits, e.g. power ...H02K 9/06 with fans or impellers driv...
