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

• US 20100026245A1
• Filed: 07/31/2008
• Published: 02/04/2010
• Est. Priority Date: 07/31/2008
• Status: Active Grant

• Current Assignee: GM Global Technology Operations LLC (General Motors Company)
• Original Assignee: GM Global Technology Operations Incorporated (Motors Liquidation Co. GUC Trust)
• Inventors: PERISIC, MILUN, ESMAILI, GHOLAMREZA
• Granted Patent: US 7,911,180 B2
• Time in Patent Office: Days
• US Class Current: 320/142
• CPC Class Codes: B60K 6/46 Series type
• CPC Class Codes: B60L 2200/26 Rail vehicles
• CPC Class Codes: B60L 50/62 charged by low-power generators primarily intended to support the batteries, e.g. range extenders
• CPC Class Codes: B60L 50/66 Arrangements of batteries
• CPC Class Codes: B60L 53/14 Conductive energy transfer
• CPC Class Codes: B60W 10/08 including control of electric propulsion units, e.g. motors or generators
• CPC Class Codes: B60W 10/26 for electrical energy, e.g. batteries or capacitors
• CPC Class Codes: B60W 20/00 Control systems specially adapted for hybrid vehicles hybrid vehicle design, B60K6/00; electric vehicles B60L
• CPC Class Codes: B60W 20/15 Control strategies specially adapted for achieving a particular effect
• CPC Class Codes: B60W 2510/244 Charge state
• CPC Class Codes: H02J 7/00 Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
• CPC Class Codes: Y02T 10/62 Hybrid vehicles
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 90/14 Plug-in electric vehicles

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.

Claims

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.

2. The hybrid vehicle of claim 1, wherein the delayed signal is delayed by one-quarter cycle from the single phase power grid voltage.

3. The hybrid vehicle of claim 1, wherein the delayed signal is orthogonal to the single phase power grid voltage.

4. The hybrid vehicle of claim 1, wherein the electric motor is an alternating current motor.

5. The hybrid vehicle of claim 1, wherein the electric motor is a direct current motor.

6. A method of charging a battery array in an electrically propelled vehicle, comprising the steps of:

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.

7. The method of claim 6, wherein the delayed signal is delayed by one-quarter cycle.

8. The method of claim 6 which includes the step of generating a second charging signal from a generator powered by a gas engine for charging the battery array while the electrically propelled vehicle is in motion.

9. A phase locked loop suitable for use in a vehicle at least partially propelled by a battery array, comprising:

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.

10. The phase locked loop of claim 9, wherein the delaying circuit delays the single phase power grid voltage by one-quarter cycle.

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.

12. The vehicle of claim 11, including:

a gas engine and a generator for charging the battery array while the vehicle is in operation.

13. The vehicle of claim 11, wherein the electric motor is an alternating current motor.

14. The vehicle of claim 11, wherein the electric motor is a direct current motor.

15. The vehicle of claim 11, wherein the delayed signal is delayed from the single phase power grid voltage by one-quarter cycle.