40results about "Dc and ac dynamo-electric motors control" patented technology

A method is provided for driving a motor apparatus having a first motor, a second motor, and a motor power supply commonly used for the first motor and the second motor. The first motor is a brushless motor. An electrical power is supplied from the motor power supply to driving circuits of the first motor and the second motor through a common motor power supply line. The first motor is driven by a direct PWM driving method, and the second motor is driven by a method different from the direct PWM driving method. A reverse regeneration current generated in the first motor is flown to the second motor through the common motor power supply line.

A method is provided for driving a motor apparatus having a first motor, a second motor, and a motor power supply commonly used for the first motor and the second motor. The first motor is a brushless motor. An electrical power is supplied from the motor power supply to driving circuits of the first motor and the second motor through a common motor power supply line. The first motor is driven by a direct PWM driving method, and the second motor is driven by a method different from the direct PWM driving method. A reverse regeneration current generated in the first motor is flown to the second motor through the common motor power supply line.

A motor driving device is disclosed that includes a first drive circuit that drives a first electric motor and increases a rotational speed of the first electric motor according to an increase in a duty ratio of a pulse signal output from an electronic control unit. The motor driving device also includes a second drive circuit that drives a second electric motor and increases the rotational speed of the second electric motor according to the increase in the duty ratio of the pulse signal. The second drive circuit smooths the pulse signal from the electronic control unit to produce a direct-current voltage. Also, the second drive circuit supplies electric power to the second electric motor by applying the direct-current voltage to the second electric motor.

A method for determining supply requirements for a motor control system includes determining a performance profile for each of a plurality of drive units. A power supply parameter for each drive unit is generated based on the performance profiles. The power supply parameters for the drive units are combined to generate a rating parameter for the motor control system. In some embodiments, instructions for implementing the method may be encoded on a program storage device or programmed into a processing device for execution.

A motor driving device is disclosed that includes a first drive circuit that drives a first electric motor and increases a rotational speed of the first electric motor according to an increase in a duty ratio of a pulse signal output from an electronic control unit. The motor driving device also includes a second drive circuit that drives a second electric motor and increases the rotational speed of the second electric motor according to the increase in the duty ratio of the pulse signal. The second drive circuit smooths the pulse signal from the electronic control unit to produce a direct-current voltage. Also, the second drive circuit supplies electric power to the second electric motor by applying the direct-current voltage to the second electric motor.

The invention provides a comprehensive control device based on wireless WIFI. A wireless WIFI module receives a motor working instruction sent by a motor control terminal through a wireless WIFI signal; the wireless WIFI module is used for identifying and processing the motor working instruction, the motor working instruction is transmitted to a direct-current brushless motor control module or a direct-current brush motor control module or a stepping motor control module in the form of bus signals; and the direct-current brushless motor control module or the direct-current brush motor controlmodule or the stepping motor control module operates the processed motor working instruction and outputs a corresponding motor control signal so as to control the direct-current brushless motor or thedirect-current brush motor or the stepping motor to work. Data transmitted can run in the device for a long time, the running condition of the motor control device can be monitored more conveniently,and the motor control device can be simplified and intelligentized.

A load in an electrical apparatus is driven by two motors M1, M2. Switching means (R1, R2) switches the motors M1, M2 between: a series configuration, in which the motors M1, M2 are connected in series across a power supply and driven with a dc supply; and a parallel configuration in which the motors M1, M2 are connected in parallel across the power supply and driven with an ac supply. In the series configuration, a bridge rectifier BR is switched across the ac supply to provide the dc supply for the motors M1, M2 and in the parallel configuration, the rectifier BR is removed from the circuit. The arrangement can be used to drive a drum of a washing machine or a load in some other kind of appliance.

The invention relates to an efficient and energy-saving transmission method, which comprises the steps that: a transmission platform is established in advance, wherein the transmission platform comprises a motor, a standby motor, a current detection module, a motor driving module, a battery, a control module, a charge-discharge switching module, a motion control module and a variable speed gear box; the control module is electrically connected with the motor driving module, the current detection module, the variable speed gear box, the charge-discharge switching module and the motion control module; the motor driving module can drive the motor and the standby motor to rotate; the motor and the standby motor are connected with the variable speed gear box; the variable speed gear box drives the load to move; and the charge-discharge switching module is connected with the motor and the battery. The efficient and energy-saving transmission method has the advantages of good reliability and low cost, and can realize efficient and energy-saving transmission reasonably.

A fan drive circuit for a variable speed fan motor in a cooling system, includes an inverter configured to supply a current signal to stator windings of the variable speed fan motor, a frequency detection circuit coupled to an output stage of an inverter of a compressor motor of the cooling system and configured to detect a first frequency of a compressor current signal at the output stage of a variable speed compressor drive circuit and generate a frequency signal, and a digital signal processor (DSP) coupled to the inverter and the frequency detection circuit. The DSP is configured to receive the frequency signal corresponding to the first frequency from the frequency detection circuit, select a second frequency corresponding to the first frequency at which to operate the variable speed fan motor, and transmit control signals to the inverter to supply current to the stator windings at the second frequency.

The invention discloses a main control board circuit of a full-automatic pancake baking machine, which relates to the field of pancake baking machines and comprises a power supply module, a sensor control module, a silicon controlled rectifier control module and a display control board, wherein the sensor control module, the silicon controlled rectifier control module and the display control board are all electrically connected with the power supply module; and the display control board is electrically connected with the sensor control module. According to the main control board circuit of the full-automatic pancake baking machine, after an operation instruction is given out through the display control board, a first main control chip in the sensor control module receives a signal and transmits the signal to a second main control chip through communication, and the second main control chip drives on-off of a silicon controlled rectifier by giving a high-low level driving signal to a Darlington tube, and thus, the motor and the heating tube are thus controlled to work; the motor works to a designated position, the operation is simple and convenient, pancakes can be automatically made, and the time of the pancake baking machine can be automatically controlled when the pancakes are baked.

An electrical serially-connected control system for driving motors in series includes a control device, at least one processing device, and a transmission medium connected between the two devices for mutual communication. The control device includes a power rectifier transforming an external power, a signal converter converting each external command signal, and an integration unit connected to the rectifier and the converter for integrating the transformed power with each converted command signal to create commands. The processing device includes a voltage regulator connected to the transmission medium for stabilizing the power come from the command, a power storage module connected to the voltage regulator and each motor, a signal filter connected to the transmission medium for processing the command signal come from the command, a controller connected with the voltage regulator, the power storage module and the signal filter, and a signal generator connected to the controller.

A motor driving circuit includes a first motor driving circuit that controls driving of a first motor is disposed, a second motor driving circuit that controls driving of a second motor is disposed, and a constant current generation circuit that generates a constant current is disposed, and the constant current generation circuit is disposed at a position deviating from between the first motor driving circuit and the second motor driving circuit.

An electronic control unit, for example, a rotating machine controller, is capable of driving one three-phase motor including a first set of three-phase winding and a second set of three-phase winding and one to three direct current motors. The direct current motor is connected to a position between one phase of the first set of three-phase winding and one phase of the second set of three-phase winding without redundancy. Inverters convert a direct current electric power to a three-phase alternating current electric power by an operation of bridge-connected plural switching elements, and apply a voltage to each phase in two sets of three-phase winding. A control unit controls a supply of electric power to the three-phase motor and to the direct current motor by controlling an operation of the switching elements.