SINGLE-PHASE PHASE LOCKED LOOP SUITABLE FOR USE IN A HYBRID VEHICLE CHARGING SYSTEM AND METHOD FOR CHARGING A HYBRID VEHICLE FROM A SINGLE-PHASE POWER SOURCE
First Claim
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1. A hybrid vehicle, comprising:
- a gas engine;
a battery array powering a electric motor to propel the hybrid vehicle in a first mode;
a generator, driven by the gas engine, for recharging the battery array; and
a charging control circuit coupled to a single phase power grid voltage for recharging the battery array from a charging signal phase locked to the single phase power grid voltage, the charging control circuit including a phase locked loop for receiving the single phase power grid voltage and generating a delayed signal therefrom, each of the power control voltage and the delayed signal being processed by the phase locked loop circuit to provide the charging signal for recharging the battery array.
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Abstract
Apparatus for charging an electric vehicle or a hybrid vehicle are provided. Particularly, apparatus for charging a hybrid vehicle from a single-phase standard (110 volt, single-phase, 60 Hz in the U.S.) are provided. In one implementation, a single-phase phase locked loop (PLL) receives a single-phase power gird voltage and delays it by one-quarter cycle to create an orthogonal imaginary second power signal. These signals are then applied to a transform matrix within a PLL to phase lock an output signal to the incoming power grid voltage.
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Citations
15 Claims
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1. A hybrid vehicle, comprising:
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a gas engine; a battery array powering a electric motor to propel the hybrid vehicle in a first mode; a generator, driven by the gas engine, for recharging the battery array; and a charging control circuit coupled to a single phase power grid voltage for recharging the battery array from a charging signal phase locked to the single phase power grid voltage, the charging control circuit including a phase locked loop for receiving the single phase power grid voltage and generating a delayed signal therefrom, each of the power control voltage and the delayed signal being processed by the phase locked loop circuit to provide the charging signal for recharging the battery array. - View Dependent Claims (2, 3, 4, 5)
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6. A method of charging a battery array in an electrically propelled vehicle, comprising the steps of:
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receiving a single phase power grid voltage; delaying the single phase power grid voltage to provide a delayed signal; processing the single phase power grid voltage and the delayed signal in a phase locked loop to provide a charging signal phase locked to the single phase power grid voltage; and utilizing the charging signal to recharge a battery array of the electrically powered vehicle. - View Dependent Claims (7, 8)
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9. A phase locked loop suitable for use in a vehicle at least partially propelled by a battery array, comprising:
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a delay circuit providing a delayed signal representing a delayed version of a single phase power grid voltage to a transformation matrix of a phase locked loop circuit; and the transformation matrix receiving the delayed signal and the single phase power control voltage and processing each signal to provide a charging signal phase locked to the single phase power grid voltage; wherein, the charging signal can be used to recharge the battery array while the vehicle is not in motion. - View Dependent Claims (10)
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11. A vehicle powered by at least an electric motor, comprising:
a charging control circuit coupled to a single phase power grid voltage for recharging a battery array from a phase locked signal, the charging control circuit including a phase locked loop for receiving the single phase power grid voltage and generating a delayed signal therefrom, each of the single phase power grid voltage and the delayed signal being processed by the phase locked loop to provide the phase locked signal for recharging the battery array. - View Dependent Claims (12, 13, 14, 15)
Specification