Circuitry and related control method for an electric or hybrid vehicle with two direct current sources
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Abstract
Proposed is a circuitry and a related control mechanism for a vehicle with electric drive only or for a vehicle with hybrid drive comprised of an electric and a combustion motor. This circuitry has a multi-phase machine and two direct current units. Furthermore, an arrangement of power semiconductor components, in two converters in bridge arrangement of two semiconductor switches whose respective alternating current connections are connected in phase direction and to the connections of the multi-phase machine. The negative polarity connections of the two direct current units and the two converters are also connected to each other, the positive polarity connection of the first direct current unit is connected to the positive connection of the first convert by means of a flow control valve and the positive polarity connection of the second direct current unit is connected to the positive connection of the second converter by means of a flow control valve. Furthermore, a method is described for quasi-simultaneously supplying a multi-phase machine in motor operation from both direct current units and for supplying a first direct current unit from a second direct current unit with lower output voltage than the first one.
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Citations
20 Claims
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1-8. -8. (canceled)
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9. A circuit for at least one of an electric vehicle and a hybrid vehicle with at least one multi-phase machine with a first direct current unit that is a current source and a current sink, and a second direct current unit that at least one of a current source and a sink and an arrangement of power semiconductor components in a first and second converter, wherein:
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a second polarity connection of each of said first and said second direct current units connects with each respective said converter and each said converter is connected;
at least one flow control valve means for connecting a first polarity connection of said first direct current unit to a first connection of said first converter; and
at least a second flow control valve means for connecting a first polarity connection of said second direct current unit to a first connection of said second converter.
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10. A circuit for at least one of an electric vehicle and a hybrid vehicle, comprising:
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at least one multi-phase machine with a first direct current unit that is at least one of a current source and a current sink;
a second direct current unit that is at least one of a current source and a sink;
an arrangement of power semiconductor components in a first and a second converter;
each said first and said second converter further comprising;
a corresponding number of half-bridge arrangements of two semiconductor switches;
respective alternating current connections of each said semiconductor, switches being connected to each other in phase direction and to connections of said at least one multi-phase machines whose direct current connections with a same polarity of respective converters are connected;
wherein;
a second polarity connection of each of said first and said second direct current units connects with each respective said converter and each said converter is connected;
at least one flow control valve means for connecting a first polarity connection of said first direct current unit to a first connection of said first converter; and
at least a second flow control valve means for connecting a first polarity connection of said second direct current unit to a first connection of said second converter. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A method for controlling a circuitry system, comprising the steps of:
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providing a circuit for at least one of an electric vehicle and a hybrid vehicle, further comprising;
at least one multi-phase machine with a first direct current unit that is at least one of a current source and a current sink;
a second direct current unit that is at least one of a current source and a sink;
an arrangement of power semiconductor components in a first and a second converter;
each said first and said second converter further comprising;
a corresponding number of half-bridge arrangements of two semiconductor switches;
respective alternating current connections of each said semiconductor switches being connected to each other in phase direction and to connections of said at least one multi-phase machines whose direct current connections with a same polarity of respective converters are connected;
wherein;
a second polarity connection of each of said first and said second direct current units connects with each respective said converter and each said converter is connected;
at least one flow control valve means for connecting a first polarity connection of said first direct current unit to a first connection of said first converter;
at least a second flow control valve means for connecting a first polarity connection of said second direct current unit to a first connection of said second converter;
supplying a multi-phase machine in motor operation quasi-simultaneously from both said direct current units;
whereinsaid first direct current unit actuates said motor for a certain time interval by means of an opened TOP switch of a first half-bridge arrangement and an opened BOT switch of at least a second half-bridge arrangement of said first converter, during the subsequent time interval during which the free-flowing current would flow due to the inductance of the motor windings;
a TOP switch of a first half-bridge arrangement and a BOT switch of any second half-bridge arrangement of the second converter would supply the motor from the second direct current unit, whereby said supplying step enables said method permutated cyclically for all said half-bridge arrangements; and
said first direct current unit is supplied from said second direct current unit with lower output voltage in that said TOP switch that corresponds to the first converter of said first direct current unit and simultaneously a BOT switch is opened that connects to said TOP switch by means of a winding of said multi-phase machine; and
corresponds to the second converter of the second direct current unit, which causes current to flow, with the BOT switch in a closed operation and the current flow being maintained due to the inductance of the winding and forced to flow through a diode of said TOP switch that corresponds to said BOT switch and charging said second direct unit with an open flow control valve.
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Specification