A power sharing system for electric motors and drives shares power between multiple power sources. Multiple motor drives share power between multiple energy sources, without the need for a DC to DC converter. A motor drive adapts the DC voltage range of the power source to either AC voltage or a different DC voltage range to operate one or more electric motors. Either a capacitor bank or a battery is directly connected to a motor drive's DC input. Two separate DC inputs exist, each able to operate at its own voltage and both feeding the same motor through separate motor drives, to allow batteries to be operated at one voltage level while capacitors are operated at another. The motor drives inherently cause power to flow between the motor and either power source, regardless of the relative voltages of the two sources, provided that each source is at a sufficient voltage to power the motor independently.

A system comprising a high voltage (HV) bank section using capacitors arranged into two banks, a multifilar inductor coupling the HV bank to a service voltage (SV) bank section and load through a charging circuit charging the SV bank from a more fully charged bank until the charging bank is depleted, and a switch switching, from the depleted bank to the other bank of bank to charge the SV bank. The charging circuit then charging the depleted bank by a power supply as the other HV bank charges the SV bank. A supervisory controller controls the switch to repeat switching and charging between the two banks for a defined period. The capacitors may be supercapacitors having a capacitance on the order of 1 to 10 MegaJoules.

A direct drive parallel power system for powering a transport climate control system is provided. The direct drive parallel power system comprises a powertrain, a battery source and a power system controller. The powertrain includes a prime mover, a motor-generator, and a drive shaft. The prime mover is configured to generate mechanical power for powering a direct driven load of the transport climate control system via the drive shaft. A motor of the motor-generator is configured to generate mechanical power for powering the direct driven load via the drive shaft. The battery source is electrically connected to a generator of the motor-generator and is configured to supply electrical power to the motor of the motor-generator and configured to supply electrical power to an electrically driven load of the transport climate control system. The power system controller monitors and controls operation of the prime mover, the motor-generator, and the battery source.

A direct drive parallel power system for powering a transport climate control system is provided. The direct drive parallel power system comprises a powertrain, a battery source and a power system controller. The powertrain includes a prime mover, a motor-generator, and a drive shaft. The prime mover is configured to generate mechanical power for powering a direct driven load of the transport climate control system via the drive shaft. A motor of the motor-generator is configured to generate mechanical power for powering the direct driven load via the drive shaft. The battery source is electrically connected to a generator of the motor-generator and is configured to supply electrical power to the motor of the motor-generator and configured to supply electrical power to an electrically driven load of the transport climate control system. The power system controller monitors and controls operation of the prime mover, the motor-generator, and the battery source.

A high voltage protection system for saddle type vehicle detects the short circuiting of any wire. The high voltage protection system provides three different modules: a high voltage protection circuit, a fault collection circuit, and a fault detection circuit, working together to detect the short circuiting or voltage spike and disconnect the vehicle loads from the power supply to prevent an accident.

A high voltage protection system for saddle type vehicle detects the short circuiting of any wire. The high voltage protection system provides three different modules: a high voltage protection circuit, a fault collection circuit, and a fault detection circuit, working together to detect the short circuiting or voltage spike and disconnect the vehicle loads from the power supply to prevent an accident.

A vehicle power supply system configured to be charged by an electric vehicle (EV) charging station that performs charging with a voltage equal to or more than a predetermined lower limit voltage. The vehicle power supply system includes a battery having a rated voltage lower than the lower limit voltage; a capacitor electrically connected in series to the battery, wherein a sum of the rated voltage of the battery and a rated voltage of the capacitor is greater than the first voltage; and an interface configured to receive electric power from the EV charging station. The vehicle power supply system also includes circuitry configured to receive electric power from the EV charging station, and charge the battery and the capacitor using the received electric power.

A vehicle power supply system configured to be charged by an electric vehicle (EV) charging station that performs charging with a voltage equal to or more than a predetermined lower limit voltage. The vehicle power supply system includes a battery having a rated voltage lower than the lower limit voltage; a capacitor electrically connected in series to the battery, wherein a sum of the rated voltage of the battery and a rated voltage of the capacitor is greater than the first voltage; and an interface configured to receive electric power from the EV charging station. The vehicle power supply system also includes circuitry configured to receive electric power from the EV charging station, and charge the battery and the capacitor using the received electric power.

An example electrical system is disclosed. The electrical system can include a rechargeable energy storage system (RESS) and a power inverter connected to the RESS. The power inverter can be configured to provide electrical power to an electric machine. A switch can be disposed between the plurality of machine windings and an output load. The switch is configured to transition between a closed state to allow current flow from the RESS through the inverter and the plurality of machine windings to the output load and an open state to prevent current flow to the output load.

An example electrical system is disclosed. The electrical system can include a rechargeable energy storage system (RESS) and a power inverter connected to the RESS. The power inverter can be configured to provide electrical power to an electric machine. A switch can be disposed between the plurality of machine windings and an output load. The switch is configured to transition between a closed state to allow current flow from the RESS through the inverter and the plurality of machine windings to the output load and an open state to prevent current flow to the output load.