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US 8,053,921 B2Granted
Driving force generation system, vehicle using the system, and method for controlling the system
AssigneeToyota Jidosha Kabushiki Kaisha
InventorShinji Ichikawa
Life of this patent
Estimating the term…
Abstract
A target power value determining unit determines target power values Pc1* and Pc2* such that a sum SPc* of target load powers as a sum of target load power Pc1* and target load power Pc2* does not exceed a sum SWin of allowable charging powers and a sum SWout of allowable discharging powers. In accordance with the generated target load power values Pc1* and Pc2*, switching commands PWM1 and PWM2 are generated. Consequently, an inverter executes a power conversion operation such that the powers exchanged between a main line ML and motor generators attain to the target load power values Pc1* and Pc2*, respectively.
Claims13
A driving force generation system, comprising:
- a power line;
- a plurality of power storage units connected in parallel with said power line;
- a rotating electric machine capable of bi-directionally converting electric power and rotational driving force;
- a power converting unit connected between said power line and said rotating electric machine, for performing power conversion between said rotating electric machine and said power line;
- allowable power determining means for determining allowable power of charging or discharging in each of said plurality of power storage units, based on state of charge of each of said plurality of power storage units;
- and
- target power value determining means for determining, within a range of a sum of allowable powers obtained by summing up said allowable power of each of said power storage units, a target power value to be exchanged between said power line and said rotating electric machine, in accordance with a state of running;
- wherein
- said power converting unit is configured to execute a power converting operation such that the power exchanged between said power line and said rotating electric machine attains to said target power value.
6 more elements
A driving force generation system, comprising:
- a power line;
- a plurality of power storage units connected in parallel with said power line;
- a rotating electric machine capable of bi-directionally converting electric power and rotational driving force;
- a power converting unit connected between said power line and said rotating electric machine, for performing power conversion between said rotating electric machine and said power line;
- and
- a controller;
- wherein
- said controller is configured to
- determine allowable power of charging or discharging in each of said plurality of power storage units, based on state of charge of each of said plurality of power storage units, and
- determine within a range of a sum of allowable powers obtained by summing up said allowable power of each of said power storage units, a target power value to be exchanged between said power line and said rotating electric machine, in accordance with a state of running;
- and
- said power converting unit is configured to execute a power converting operation such that the power exchanged between said power line and said rotating electric machine attains to said target power value.
9 more elements
A driving force generation system, comprising:
- a power line;
- a plurality of power storage units;
- a plurality of voltage converting units connected in parallel with said power line and in correspondence with said plurality of power storage units, respectively;
- a plurality of rotating electric machines capable of bi-directionally converting electric power and rotational driving force;
- a plurality of power converting units connected in parallel with said power line and in correspondence with said plurality of rotating electric machines, respectively;
- and
- a controller;
- wherein
- said controller is configured to individually generate a command for each of said plurality of voltage converting units to be within a range of allowable power of charging or discharging that is determined based on state of charge of each of said plurality of power storage units, and to individually generate a command for each of said plurality of power converting units to be within a range of a sum of allowable powers that is obtained by summing up said allowable power of each of said plurality of power storage units.
6 more elements
A vehicle provided with a driving force generation system,
- said driving force generation system including
- a power line,
- a plurality of power storage units connected in parallel with said power line,
- a rotating electric machine capable of bi-directionally converting electric power and rotational driving force,
- a power converting unit connected between said power line and said rotating electric machine, for performing power conversion between said rotating electric machine and said power line,
- allowable power determining means for determining allowable power of charging or discharging in each of said plurality of power storage units, based on state of charge of each of said plurality of power storage units, and
- target power value determining means for determining, within a range of a sum of allowable powers obtained by summing up said allowable power of each of said power storage units, a target power value to be exchanged between said power line and said rotating electric machine, in accordance with a state of running;
- wherein
- said power converting unit is configured to execute a power converting operation such that the power exchanged between said power line and said rotating electric machine attains to said target power value.
6 more elements
A method of controlling a driving force generation system,
- said driving force generation system including
- a power line,
- a plurality of power storage units electrically connected in parallel with said power line,
- a rotating electric machine capable of bi-directionally converting electric power and rotational driving force, and
- a power converting unit connected between said power line and said rotating electric machine, for performing power conversion between said rotating electric machine and said power line;
- said control method comprising the steps of:
- determining allowable power of charging or discharging in each of said plurality of power storage units, based on state of charge of each of said plurality of power storage units;
- determining within a range of a sum of allowable powers obtained by summing up said allowable power of each of said power storage units, a target power value to be exchanged between said power line and said rotating electric machine, in accordance with a state of running;
- and
- controlling a power converting operation at said power converting unit such that the power exchanged between said power line and said rotating electric machine attains to said target power value.
7 more elements
A method of controlling a driving force generation system,
- said driving force generation system including
- a power line,
- a plurality of power storage units,
- a plurality of voltage converting units connected in parallel with said power line and in correspondence with said plurality of power storage units, respectively,
- a plurality of rotating electric machines capable of bi-directionally converting electric power and rotational driving force, and
- a plurality of power converting units connected in parallel with said power line and in correspondence with said plurality of rotating electric machines, respectively;
- said control method comprising the steps of:
- determining allowable power of charging or discharging in each of said power storage units, based on state of charge of each of said plurality of power storage units;
- determining a sum of allowable powers by summing up said allowable power of each of said plurality of power storage units;
- individually generating a command for each of said plurality of voltage converting units to be within a range of allowable power of each of the power storage units;
- and
- individually generating a command for each of said plurality of power converting units to be within a range of the sum of said allowable powers.
9 more elements
Dependencies are inferred from the claim text.