JP2006296189A5 - - Google Patents

Claims (10)

A wind turbine, a generator, a converter having a protective torque command pattern according to the rotation of the generator and controlling the generator, and an inverter that converts the output of the converter into a predetermined voltage and frequency and outputs the voltage to the system A generator control method for a wind turbine generator comprising:
A configuration including a gain K as an element for determining the protection torque command pattern determined according to the rotation of the generator and given by a torque command T_ref = K · f (ω) as a product with the function f (ω) of the speed ω. In the case of normal operation at a wind speed less than a predetermined level, it is operated with a normal gain Knorm, and when the wind speed exceeds a predetermined level, it is determined that the predetermined level has been exceeded, When it is determined that the predetermined level has been exceeded, the gain that determines the protection torque command pattern is increased by a predetermined amount of change, and by increasing the gain, the rotational speed decreases, and the generator torque becomes predetermined. A generator control method for a wind turbine generator, characterized in that, when it is determined that the level is lower than the level, the gain is fixed at that time and the operation is continued. In the control with the protection torque command pattern, when the wind power decreases to a normal level, the state is detected when the generator torque becomes smaller than a predetermined level, and the torque gain K is determined as the normal gain Knorm. The generator control method for a wind turbine generator according to claim 1, wherein the generator is returned to the normal operation state. A wind turbine, a generator, a converter having a torque command pattern corresponding to the rotation of the generator and controlling the generator, an inverter that converts the output of the converter into a predetermined voltage and frequency, and outputs the voltage to the system In a generator control method of a wind turbine generator comprising:
A protective torque command pattern is provided in the region of the rotational speed lower than the point where the maximum torque of the windmill at a certain wind speed is obtained, and the torque command pattern is shifted to the protective torque command pattern when the rotational speed of the generator is increased. A generator control device for a wind turbine generator, wherein a protection detection level is provided. 4. The wind power according to claim 3, wherein a return detection level for returning from the protective torque command pattern to the torque command pattern when the rotational speed of the generator is lowered is provided in the control with the protective torque command pattern. Generator control device of power generator. A wind turbine, a generator, a converter having a torque command pattern corresponding to the rotation of the generator and controlling the generator, an inverter that converts the output of the converter into a predetermined voltage and frequency, and outputs the voltage to the system A generator control device for a wind turbine generator comprising:
In a configuration including a gain K as an element for determining the torque command pattern determined according to the rotation of the generator, and given by a torque command T_ref = K · f (ω) as a product with a function f (ω) of the speed ω. The normal low-gain operating unit that operates with the normal gain Knorm, the gain increasing unit that increases the gain that determines the torque command pattern by a predetermined change amount, and the magnitude of the gain is fixed to the gain at that time A gain fixing unit, a wind speed determining unit that determines whether the wind speed exceeds a predetermined level, and a generator torque determining unit that determines whether the generator torque is at a predetermined level, wherein the wind speed determining unit is at a predetermined level When it is determined that the wind speed is less than the normal speed, the normal low-gain operation unit is operated, and when the wind speed determination unit determines that the wind speed exceeds a predetermined level, the gay When the gain increase unit is operated and the gain is increased, the rotational speed is decreased, and the gain fixing unit is operated when the generator torque determination unit determines that the generator torque is lower than a predetermined level. The generator control device for a wind turbine generator is characterized in that the operation is continued with the gain at that time. In the control with the protection torque command pattern, a wind power normal level determination unit that determines whether or not the wind power is at a normal level, the wind power normal level determination unit determines that the wind power has decreased to a normal level, and the power generation When the machine torque determination unit determines that the generator torque has become smaller than the predetermined level, the normal low gain operation unit is operated to return the torque gain K to the normal gain Knorm and return to the normal operation state. The generator control device for a wind turbine generator according to claim 5, wherein When it is determined that the rotational speed has decreased and the generator torque has become smaller than a predetermined level due to the increase in the gain, the operation is continued with the rotational speed of the generator kept constant at the rotational speed at that time. The generator control method of the wind power generator according to claim 1 . When the wind power drops to a normal level, the state is detected when the generator torque becomes lower than a predetermined level, and the torque gain K is returned to the normal gain Knorm to return to the normal operation state. The generator control method for a wind turbine generator according to claim 7 . The generator control method for a wind turbine generator according to claim 7 , wherein when the state where the wind speed exceeds the predetermined level continues for a predetermined time, it is determined that the predetermined level has been exceeded. 9. The generator control method for a wind turbine generator according to claim 8 , wherein when the state in which the generator torque is smaller than a predetermined level continues for a predetermined time, it is determined that the wind power has decreased to a normal level. .