12-24 volt power system
First Claim
1. A two state power apparatur having a first voltage level and a second voltage level comprising:
- a. a mode control signal having a first state and a second state;
b. a first voltage output circuit;
c. a second voltage output circuit;
d. an alternator means for generating electrical current at a charge voltage level having an armature winding, a field winding and a stator winding, wherein the alternator has a charge voltage output;
e. a first electrical current supply means for supplying electrical current having an output connected to the fidl winding and further having a field electrical current sense signal input connected to the armature winding and further having a first pulse width modulated input;
f. a voltage control means for generating a pulse width modulated signal proportional to a predetermined voltage level having a first pulse width modulated output signal connected to the firs tpulse width modulated input of the first electrical current supply means, wherein the voltage control means also has a predetermined voltage reference, and a dual voltage level input, wherien the dual voltage level input is connected to the first voltage level and the second voltage level so as to adjust the first uplse width modulated output in response to a sensed voltage signal at the dual voltage level input and the predetermined voltage reference;
g. a solenoid means for switching wherein the solenoid means inlcudes a first input connected to the alternator means charge voltage output, a first switching output connected to the second voltage output circuit, and wherien the solenoid also has a voltage level signal input;
h. a second electrical current supply means for supplying electrical current to the solenoid means having a voltage level signal output connected to the voltage level signal input of the solenoid means and further including an input;
i. a voltage lockout means for locking out the first voltage level or the second voltage level having a first voltage level lockout output signal, and a second voltage level lockout output signal; and
j. a mode switching means having a first input connected to the mode control signal, a second input connected to the first voltage level lockout output signal, a third input connected to the second voltage level lockout output signal, and a solenoid control output connected to the input of the second electrical current supply means, wherein the mode switching means provides a solenoid control signa on the solenoid control output in response to the mode control signal, the first voltage level lockout output signal, and the second voltage level lockout output signal so as to activate the second electrical current supply means to switch the solenoid means such that the charge voltage output is connected to the first voltage output circuit in response to the first state of the mode control signal except when the first voltage level lockout output signal is active, and the charge voltage output is connected to the second voltage output circuit in response to the second state of the mode control signal except when the second voltage level lockout output signal is active.
5 Assignments
0 Petitions
Accused Products
Abstract
A dual state power system utilizing power drivers to switch an alternator from 12 volt to 24 volt charging. A 12-24 volt alternator regulator charges a 12 volt battery or a 24 volt battery depending on the position of a mode switch. The invention allows the use of one alternator/engine combination to charge either a 12 volt or 24 volt system. The invention uses a 12 volt mode priority to override a 24 volt charging mode. The 24 volt charging mode is interrupted to provide voltage to a 12 volt battery for a predetermined time period. A voltage controller drives a smart electrical current driver which controls the output of an alternator. A reset circuit determines from system parameters reported from system components whether the charging system to a reset error circuit whether or not the alternator is operating correctly. A sense lamp driver indicates to the user that the system is in a non functioning state. A 12 volt mode lock-out and 24 volt mode lock-out isolates the 12 volt or 24 volt modes where appropriate. An open circuit sensor drives a reset circuit that prevents an open circuit from damaging the system. The reset shuts off alternator fields for many conditions including a fault in the alternator or the two power drivers or an open circuit.
21 Citations
15 Claims
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1. A two state power apparatur having a first voltage level and a second voltage level comprising:
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a. a mode control signal having a first state and a second state; b. a first voltage output circuit; c. a second voltage output circuit; d. an alternator means for generating electrical current at a charge voltage level having an armature winding, a field winding and a stator winding, wherein the alternator has a charge voltage output; e. a first electrical current supply means for supplying electrical current having an output connected to the fidl winding and further having a field electrical current sense signal input connected to the armature winding and further having a first pulse width modulated input; f. a voltage control means for generating a pulse width modulated signal proportional to a predetermined voltage level having a first pulse width modulated output signal connected to the firs tpulse width modulated input of the first electrical current supply means, wherein the voltage control means also has a predetermined voltage reference, and a dual voltage level input, wherien the dual voltage level input is connected to the first voltage level and the second voltage level so as to adjust the first uplse width modulated output in response to a sensed voltage signal at the dual voltage level input and the predetermined voltage reference; g. a solenoid means for switching wherein the solenoid means inlcudes a first input connected to the alternator means charge voltage output, a first switching output connected to the second voltage output circuit, and wherien the solenoid also has a voltage level signal input; h. a second electrical current supply means for supplying electrical current to the solenoid means having a voltage level signal output connected to the voltage level signal input of the solenoid means and further including an input; i. a voltage lockout means for locking out the first voltage level or the second voltage level having a first voltage level lockout output signal, and a second voltage level lockout output signal; and j. a mode switching means having a first input connected to the mode control signal, a second input connected to the first voltage level lockout output signal, a third input connected to the second voltage level lockout output signal, and a solenoid control output connected to the input of the second electrical current supply means, wherein the mode switching means provides a solenoid control signa on the solenoid control output in response to the mode control signal, the first voltage level lockout output signal, and the second voltage level lockout output signal so as to activate the second electrical current supply means to switch the solenoid means such that the charge voltage output is connected to the first voltage output circuit in response to the first state of the mode control signal except when the first voltage level lockout output signal is active, and the charge voltage output is connected to the second voltage output circuit in response to the second state of the mode control signal except when the second voltage level lockout output signal is active. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification